Abrégé

A test method and apparatus for the evolution of a neighborhood stress field during fault instability. The test method comprises: step S1: manufacturing a substrate (101); S2, selecting a pre-configured surface (101a) of the substrate to fix a strain sensing member (102); step S3, fixing the substrate (101) to the position of a fault in an experimental model (103), and determining a coordinate position of the substrate (101) on the basis of an inclination angle of the fault; step S4, connecting the strain sensing member (102) to a strain gauge; step S5, applying in-situ triaxial stress to the experimental model (103), and applying disturbance to the experimental model (103) when the experimental model reaches equilibrium; and step S6, calculating a stress value on the basis of a strain component measured by the strain gauge, and capturing the dynamic evolution of a neighborhood stress field during fault plane instability caused by the disturbance.

Classes IPC  ?

• G01N 19/00 - Recherche sur les matériaux par des procédés mécaniques

Abrégé

Disclosed is a full-face shaft boring machine, a boring system and a boring method. The full-face shaft boring machine includes a cutterhead structure provided with an outer tapered surface structure protruding in a boring direction. The outer tapered surface structure surrounds an outer circumferential side of the rotation center of the cutterhead structure, and a radial cross section of the outer tapered surface structure gradually decreases in the boring direction; at least one receiving port for rock slag to pass through is formed at the taper top of the outer tapered surface structure and runs through the cutterhead structure in the boring direction; and a slag discharging assembly for discharging the rock slag is arranged on a side of the cutterhead structure away from the boring direction.

Classes IPC  ?

• E21B 10/42 - Trépans rotatifs du type racleur comportant des dents, des lames ou des organes de coupe similaires, p. ex. du type à fourche, en queue de poisson
• E21B 7/00 - Procédés ou matériels particuliers pour le forage
• E21B 21/00 - Procédés ou appareils pour nettoyer les trous de forage par jet de fluide, p. ex. en utilisant l'air d'échappement du moteur
• E21B 41/00 - Matériel ou accessoires non couverts par les groupes
• E21D 5/04 - Revêtement des puitsRevêtements à cet effet avec des briques, du béton, des pierres ou matériaux de construction analogues

Abrégé

The provided is an experimental apparatus and method for shale supercritical synergistic penetration and imbibition based on damping vibration, including a reaction autoclave; a damping vibration measurement device, used for measuring the weight of a rock sample; a temperature control device, used for heating and cooling the internal environment of the reaction autoclave; a pressure control device, disposed on the reaction autoclave lid; a water level control device, disposed on the upper inner wall of the reaction autoclave body; a conductivity testing device, disposed on the inner bottom of the reaction autoclave body; and a data processing device, disposed on the reaction autoclave body, used for receiving and processing signals transmitted from the damping vibration measurement device, temperature control device, pressure control device, water level control device, and conductivity testing device.

Classes IPC  ?

• G01N 5/02 - Analyse des matériaux par pesage, p. ex. pesage des fines particules séparées d'un gaz ou d'un liquide en absorbant ou adsorbant les constituants d'un matériau et en déterminant la variation de poids de l'adsorbant, p. ex. en déterminant la teneur en eau
• G01N 5/04 - Analyse des matériaux par pesage, p. ex. pesage des fines particules séparées d'un gaz ou d'un liquide en éliminant un constituant, p. ex. par évaporation, et en pesant le reste
• G01N 13/04 - Recherche des effets osmotiques
• G01N 15/08 - Recherche de la perméabilité, du volume des pores ou de l'aire superficielle des matériaux poreux
• G01N 33/24 - Matériaux de la terre

Abrégé

A tertiary cooperative compression yielding and energy-absorbing support mechanism. The compression yielding and energy-absorbing anchor cables play a basic support role, and the circumferential compression yielding device can make the primary support compression yielding arch frame have a constant resistance deformation in the circumferential direction, while the primary support compression yielding arch frame and the secondary lining steel arch frame have a relative dislocation movement in the radial compression yielding device, and the tertiary compression yielding and energy-absorbing structures are cooperated with each other to adapt to the over-meter large deformation movement of the surrounding rock.

Classes IPC  ?

• E21D 11/18 - Éléments de cintre

Abrégé

A method and apparatus for classifying water-rich weak surrounding rock based on in-situ scribing are provided. The method includes placing a scribing device on tunnel cross-sections of varying lengths; performing in-situ scribing on the tunnel cross-sections to obtain the mechanical parameters of the surrounding rock and determining the surrounding rock strength at different locations; while performing in-situ scribing, employing near-infrared spectroscopy to simultaneously measure the in-situ spectrum of the tunnel surrounding rock, thereby determining the surface water content at different locations; based on the scribing mechanical parameters of the tunnel surrounding rock, establishing a scribing depth curve, and calculating a joint development degree of the tunnel surrounding rock at different locations from the scribing depth curve; and based on the surrounding rock strength, surface water content, and joint development degree of the tunnel surrounding rock at different locations, classifying the surrounding rock grades of the tunnel cross-section.

Classes IPC  ?

• G01N 3/42 - Recherche de la dureté ou de la dureté au rebondissement en effectuant des empreintes sous une charge permanente par des dispositifs de pénétration, p. ex. sphère, pyramide
• G01N 21/3554 - CouleurPropriétés spectrales, c.-à-d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p. ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge pour la détermination de la teneur en eau
• G01N 21/359 - CouleurPropriétés spectrales, c.-à-d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p. ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge en utilisant la lumière de l'infrarouge proche

Abrégé

A monocular video-based three-dimensional reconstruction and depth prediction method and system for a pipeline are provided, relating to the technical field of deep learning and image processing. The method includes the following steps: performing feature extraction and matching and incremental reconstruction on collected image sequences of different pipeline scenes based on the COLMAP method to obtain a camera external parameter matrix corresponding to each image, and constructing a pipeline three-dimensional reconstruction dataset; training the Fast-MVSNet network and the PatchMatchNet network using the existing public datasets, and selecting an optimal network model from multiple trained network models for three-dimensional reconstruction and depth prediction of an actual pipeline scene. A holistic framework from a monocular video to a three-dimensional scene is constructed, which can effectively achieve three-dimensional reconstruction and depth prediction of a drainage pipeline and intuitively display internal structure information of the pipeline.

Classes IPC  ?

• G06T 17/00 - Modélisation tridimensionnelle [3D] pour infographie
• G06T 7/80 - Analyse des images capturées pour déterminer les paramètres de caméra intrinsèques ou extrinsèques, c.-à-d. étalonnage de caméra
• G06V 10/44 - Extraction de caractéristiques locales par analyse des parties du motif, p. ex. par détection d’arêtes, de contours, de boucles, d’angles, de barres ou d’intersectionsAnalyse de connectivité, p. ex. de composantes connectées
• G06V 10/46 - Descripteurs pour la forme, descripteurs liés au contour ou aux points, p. ex. transformation de caractéristiques visuelles invariante à l’échelle [SIFT] ou sacs de mots [BoW]Caractéristiques régionales saillantes
• G06V 10/771 - Sélection de caractéristiques, p. ex. sélection des caractéristiques représentatives à partir d’un espace multidimensionnel de caractéristiques

Abrégé

Provided is a method for recycling a retired nickel-cobalt-manganese (NCM) cathode with an alkali-free solution designed based on Le Chatelier's principle. Citric acid is used as a leaching agent and leached at a suitable solid-to-liquid ratio and acid solution concentration. Oxalic acid is added to obtain a green precipitate, and the green precipitate is mixed with a certain amount of LiOH and then calcined to obtain a regenerated cathode.

Classes IPC  ?

• H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
• C01G 53/00 - Composés du nickel
• C22B 1/02 - Procédés de grillage
• C22B 1/24 - AgglutinationBriquetage
• C22B 3/22 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés physiques, p. ex. par filtration, par des moyens magnétiques
• C22B 7/00 - Mise en œuvre de matériaux autres que des minerais, p. ex. des rognures, pour produire des métaux non ferreux ou leurs composés

Abrégé

A bactericide and reducing bacterium coupled remediation material for inhibiting acidification of coal gangue and a use thereof. The remediation material is a composite material for inhibiting acidification of coal gangue, which is formed by adsorbing a reducing bacterium by biochar to form an immobilized microbial inoculum, and then mixing the immobilized microbial inoculum with a bactericide with a sustained-release function at a volume ratio of 1:10-20, the reducing bacterium being 5-10 ml of sulfate reducing bacterium, and the bactericide being 50-100 mg/L of sodium dodecyl sulfate solution. The remediation material can remediate a coal gangue dump having the pH of 4-6, achieves the acid production inhibition effect of 80% or more and the pH value of 6.0 or more, involves simple operate, low cost, long effective time and visual effect, and has important scientific values for promoting acidification pollution remediation of a waste dump in a coal mine area and land reclamation and ecological restoration work.

Classes IPC  ?

• C12N 11/14 - Enzymes ou cellules microbiennes immobilisées sur ou dans un support inorganique
• E02D 3/00 - Amélioration ou conservation du sol ou de la roche, p. ex. conservation du permagel
• B09B 3/60 - Traitement biochimique, p. ex. en utilisant des enzymes
• C12N 1/20 - BactériesLeurs milieux de culture
• C12R 1/01 - Bactéries ou actinomycètes

Abrégé

Disclosed are a coal mining system and a coal mining method. The coal mining system includes: a mechanical coal breaking module, an air lift reverse circulation module, a jet coal breaking module, and a coal-air-water separation module. The mechanical coal breaking module includes: a drill pipe rotating device, a drill pipe, and a reamer bit, sequentially connected to perform rotary cutting, drilling and slotting operations on a coal seam in a borehole. The air lift reverse circulation module includes: an air compressor and a dual-wall drill pipe. The air compressor is configured to transport a coal-air-water mixture through an inner pipeline of the dual-wall drill pipe to the coal-air-water separation module. The jet coal breaking module includes: the drill pipe rotating device, a fracturing truck, the drill pipe, and a jet tool string, sequentially connected to mine the coal seam.

Classes IPC  ?

• E21B 43/29 - Préparation de suspensions de matières minérales, p. ex. en utilisant des buses
• E21B 7/18 - Forage par action de jets de liquides ou de gaz, avec ou sans entraînement de grenaille
• E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
• E21B 21/14 - Procédés ou appareils pour nettoyer les trous de forage par jet de fluide, p. ex. en utilisant l'air d'échappement du moteur utilisant des liquides et des gaz, p. ex. des mousses
• E21B 43/34 - Aménagements pour séparer les matériaux produits par le puits
• E21B 21/12 - Procédés ou appareils pour nettoyer les trous de forage par jet de fluide, p. ex. en utilisant l'air d'échappement du moteur utilisant des tubes de forage comprenant plusieurs passages pour les fluides, p. ex. systèmes en circuit fermé

Abrégé

Disclosed is a method of segmented grouting for repairing aquifers in a mining area after mining. The method may include: drilling a grouting hole in a ground area corresponding to a water inflow position in a goaf; and performing a segmented grouting in a target grouting layer through the grouting hole. The segmented grouting may include: a scour and migration grouting, a splitting and diffusion grouting, and a sedimentation and compaction grouting. The scour and migration grouting may use a first slurry with a first specific gravity and a first pump volume for grouting. The splitting and diffusion grouting may use a second slurry with a second specific gravity and a second pump volume for grouting. Moreover, the sedimentation and compaction grouting may use a third slurry with a third specific gravity and a third pump volume for grouting.

Classes IPC  ?

• E21F 15/00 - Procédés ou dispositifs pour mettre en place les matériaux de remblayage dans les travaux du fond

Abrégé

An experimental device for thermal-stability and re-ignition of fire foams under different heating conditions, comprises a rectangular mounting module, a radiation module, a convection module, a supply module, a foam injection module, a measurement module and an intelligent control module: (i) the rectangular mounting module is used to load the oil and foam; (ii) the radiation module simulates the effects of thermal radiation, whereas the convection module thermal convection by a fire plume; (iii) the supply module is used to supply water and oil; (iv) the foam injection module is used to generate and inject foam to the rectangular mounting module; and (v) the measurement module is used to monitor the internal temperature and heat flow parameters of the rectangular mounting module, and to record the foam layer failure time and the flame re-ignition process and finally (vi) the intelligent control module controls all other modules for any test condition.

Classes IPC  ?

• G01N 25/00 - Recherche ou analyse des matériaux par l'utilisation de moyens thermiques
• A62D 1/02 - Compositions pour éteindre les incendiesEmploi de produits chimiques pour éteindre les incendies contenant ou produisant une phase gazeuse, p. ex. de la mousse

Abrégé

A coal rock interface directional detection device based on elastic waves includes: a probe body including an elastic wave receiving device and an elastic wave excitation device spaced set at the top; a protective tube with one end connected to the adapter. The protective tube includes a collection circuit board inside the protective tube, and the collection circuit board is electrically connected to the elastic wave receiving device and the elastic wave excitation device; a sleeve, installed outside the protective tube, with one end connected to the side of the probe body near the adapter and with the other end connected to the side of the protective tube away from the adapter; and a control host, wirelessly connected with the acquisition circuit board. A coal rock interface directional detection method based on elastic waves applied in the coal rock interface directional detection device is also disclosed.

Classes IPC  ?

• G01V 1/46 - Acquisition des données
• G01V 1/50 - Analyse des données

Abrégé

The intelligent and efficient fire extinguishing device mainly comprises an intelligent sensing system, a power-driven system, an intelligent control system, a foam system, a fixation system, a support lifting system and a protection system. The intelligent sensing system is used to measure the ambient wind direction and the internal flow field of the tank to determine the fire extinguishing location. The intelligent control system controls the power-driven system to reach the designated location based on the intelligent sensing system. The foam system is used to spray foam. The fixation system is used to fix the device. The support lifting system is used to lift or rotate the cooling nozzle and fire-fighting water cannon. The protection system is used to protect the device. The movement, positioning and extinguishing of the fire extinguishing device are unitedly controlled by the intelligent control system. The invention can achieve intelligent fire extinguishment in storage tanks.

Classes IPC  ?

• A62C 3/06 - Prévention, limitation ou extinction des incendies spécialement adaptées pour des objets ou des endroits particuliers pour des matériaux très inflammables, p. ex. les métaux légers, les produits du pétrole
• A62C 5/02 - Fabrication de substances extinctrices immédiatement avant l'emploi de mousse
• A62C 27/00 - Engins de lutte contre l'incendie montés sur roues ou véhicules terrestres de lutte contre l'incendie

Abrégé

Disclosed are an integrated mining method and an integrated mining system of coal breaking, coal extraction and water circulation in a U-well. The integrated mining system includes a first ground facility unit, a second ground facility unit, a jet unit and an extraction unit. The first ground facility unit is configured to transport jet fluid to the jet unit. The jet unit is configured to break a coal seam in a sub-segment to obtain broken cinders. The extraction unit is configured to extract a coal-water mixture. The second ground facility unit is configured to receive the coal-water mixture. In response to determining that an extraction of the sub-segment is complete, the jet unit and the extraction unit is configured to move to a next sub-segment using powers provided by the first ground facility unit and the second ground facility unit.

Classes IPC  ?

• E21C 25/60 - Exécution de saignées par jets d'eau ou d'un autre liquide
• E21C 41/18 - Procédés d'exploitation minière souterraineTracés à cet effet pour la lignite ou le charbon

Abrégé

A coal and coalbed methane mining system based on ground drilling includes: a drilling component, a coal mining drill bit and a ground facility group. The coal mining drill bit is set at a predetermined end of a directional borehole in a coal seam, connected to the drilling component through a connecting pipeline. The ground facility group is connected to the drilling component, to provide coal cutting slurry for the coal mining drill bit, receive reflux slurry carrying coal and coalbed methane, and precipitate and separate the reflux slurry carrying the coal and the coalbed methane. A coal and coalbed methane mining method based on ground drilling and related devices are also disclosed.

Classes IPC  ?

• E21B 43/00 - Procédés ou dispositifs pour l'extraction de pétrole, de gaz, d'eau ou de matériaux solubles ou fusibles ou d'une suspension de matières minérales à partir de puits
• E21B 7/04 - Forage dirigé
• E21B 7/18 - Forage par action de jets de liquides ou de gaz, avec ou sans entraînement de grenaille
• E21B 43/29 - Préparation de suspensions de matières minérales, p. ex. en utilisant des buses
• E21B 43/34 - Aménagements pour séparer les matériaux produits par le puits

Abrégé

Disclosed is a grouting and water blocking method for a hard rock stratum. The grouting and water blocking method include the following steps. At first, hydrogeological information and coal seam information of a hard rock stratum is obtained. Then, a drilling trajectory of the hard rock stratum is determined based on the hydrogeological information and the coal seam information. Later, at least one drilling device is determined corresponding to the drilling trajectory based on types of multiple rock layers contained in the hard rock stratum. After that, the multiple rock layers contained in the hard rock stratum are drilled sequentially according to the drilling trajectory using the at least one drilling device. At last, in response to determining there is a water leakage area, the water leakage area is grouted.

Classes IPC  ?

• E21B 49/00 - Test pour déterminer la nature des parois des trous de forageEssais de couchesProcédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits
• E21B 7/04 - Forage dirigé
• E21B 21/06 - Dispositions pour traiter les fluides de forage à l'extérieur du trou de forage
• E21B 33/138 - Plâtrage de la paroi du trou de forageInjections dans la formation

Abrégé

The present application provides a digital twin utility tunnel system based on a reduced-order simulation model and a real-time calibration algorithm. The system includes a big data aggregation unit and a real-time simulation deduction unit. The big data aggregation unit is configured to collect static attribute data and real-time dynamic data. The real-time dynamic data includes fixed monitoring data and mobile monitoring data. The fixed monitoring data is collected by gas sensors fixedly installed in the utility tunnel, and the mobile monitoring data is collected by mobile sensors in the utility tunnel. The real-time simulation deduction unit includes a forward prediction module and an inversion calibration module. The forward prediction module is configured to perform dimension reduction simplification and rapid prediction, and the inversion calibration module is configured to perform real-time calibration on a predicted physical field, correct the predicted physical field, and perform inversion on hazard sources.

Classes IPC  ?

• G06F 30/18 - Conception de réseaux, p. ex. conception basée sur les aspects topologiques ou d’interconnexion des systèmes d’approvisionnement en eau, électricité ou gaz, de tuyauterie, de chauffage, ventilation et climatisation [CVC], ou de systèmes de câblage
• G06F 30/28 - Optimisation, vérification ou simulation de l’objet conçu utilisant la dynamique des fluides, p. ex. les équations de Navier-Stokes ou la dynamique des fluides numérique [DFN]
• G06F 111/10 - Modélisation numérique

Abrégé

The present invention relates to a test table for monitoring an operating state of a coal caving mechanism, and the use of the test table. The test table comprises a hydraulic support, a hydraulic-support posture control device, a rear armored face conveyor, a rear-armored-face-conveyor posture control device, a bottom-plate simulation device, an upper computer and a controller, wherein the hydraulic support is placed on the hydraulic-support posture control device; the rear armored face conveyor is placed on the rear-armored-face-conveyor posture control device; the hydraulic-support posture control device and the rear-armored-face-conveyor posture control device are placed on the bottom-plate simulation device; and the hydraulic support, the hydraulic-support posture control device, the rear-armored-face-conveyor posture control device and the bottom-plate simulation device are connected to the upper computer by means of the controller. Data obtained via simulation by means of the monitoring test table provided in the present invention have reference significance for intelligent coal caving during actual top-coal caving mining, and by using the data, the maximum recovery rate of top coal can be achieved under different working conditions of the top coal caving mining, thus providing relatively high economic value and practical significance for top coal recovery.

Classes IPC  ?

• B65G 65/00 - Chargement ou déchargement
• G09B 25/02 - Modèles à usages non prévus dans , p. ex. dispositif en vraie grandeur pour la démonstration de procédés industrielsModèles à usages non prévus dans , p. ex. dispositif en vraie grandeur pour la démonstration de machines

Abrégé

A device and a method for evaluating damage of high-temperature and high-humidity gas to a surrounding rock porous structure are provided. The device includes a rock sample clamper, a temperature control device, a pressurizing device, a gas mixing injection device, a CT scanning device and a low-temperature nitrogen adsorption device. By simulating the gas rock reaction under the conditions of in-situ temp., pressure and gas, using CT scanning device to visually monitor and analyze the reaction condition of gas and tunnel surrounding rock and the change condition of porous structure, and using low-temperature nitrogen adsorption test to obtain porous structure parameters change condition before and after reaction of gas and tunnel surrounding rock, and the damage evaluation index of the porous structure is established.

Classes IPC  ?

• G01N 3/12 - Test de pression
• G01N 3/06 - Adaptations particulières des moyens d'indication ou d'enregistrement
• G01N 3/18 - Exécution de tests à des températures élevées ou basses
• G01N 33/24 - Matériaux de la terre

Abrégé

Disclosed is a system for sensing and controlling the relative position between a coal caving mechanism (2) and a rear conveyor (4). The system collects related data by using a sensor, and transmits the related data to an upper computer by means of a data collection card; and the upper computer performs data analysis and processing, and directly sends a control command to an electromagnetic valve of a pull jack (6), such that the pull jack operates. Further disclosed is a method for controlling the relative position between a coal caving mechanism and a rear conveyor. The method comprises the steps of: I) establishing a coal caving position sensing model of a top coal caving support, and solving for the relative position relationship between a coal caving mechanism and a rear conveyor; II) by means of position sensing of the rear conveyor, determining whether a coal flow caved by the coal caving mechanism can accurately fall into the rear conveyor; and III) adjusting the relative position between the coal caving mechanism and the rear conveyor, so as to ensure that the coal flow on the coal caving mechanism can fall into the rear conveyor to the greatest extent. By means of the method, the position relationship between the coal caving mechanism and the conveyor can be effectively adjusted, such that top caved coal can accurately fall into the rear conveyor, thereby improving the loading efficiency and the conveying efficiency to the greatest extent.

Classes IPC  ?

• B65G 47/52 - Dispositifs pour transférer objets ou matériaux entre transporteurs, p. ex. pour décharger ou alimenter
• G06F 17/16 - Calcul de matrice ou de vecteur
• G06F 17/10 - Opérations mathématiques complexes
• G06T 7/73 - Détermination de la position ou de l'orientation des objets ou des caméras utilisant des procédés basés sur les caractéristiques
• E21D 23/04 - Caractéristiques structurelles de la construction de soutènements, p. ex. organes de liaison entre châssis adjacents ou séries d'étançonsMoyens pour empêcher un glissement latéral sur un sol incliné

Abrégé

A directional drilling method applied to a rigid bending joint directional drilling device includes: obtaining geological data; determining a lateral drilling point and a target point of a branching borehole based on the geological data; drawing a target borehole trajectory of the branching borehole based on the lateral drilling point and the target point; obtaining parameters of the drill pipe; determining a propulsion force corresponding to the target borehole trajectory based on the parameters, the target borehole trajectory, and the geological data; and applying the propulsion force to the rigid bending joint directional drilling device for drilling the branching borehole. A directional drilling system and related devices are also disclosed.

Classes IPC  ?

• E21B 7/06 - Modification de la direction du trou de forage
• E21B 47/022 - Détermination de l'inclinaison ou de la direction du trou de forage, p. ex. à l'aide de géomagnétisme

Abrégé

Disclosed is a method for repairing an aquifer in a coal mine area by grouting, including: drilling a survey hole in a ground area corresponding to a water inflow position from ground surface to a caving zone in a goaf; determining a target layer for grouting in the survey hole based on drilling data collected from the survey hole while drilling; changing the survey hole to a grouting hole; measuring a first water level from the grouting hole; grouting through the grouting hole; changing the grouting hole to an observation hole; measuring a second water level from the observation hole; and determining a water retention level based on the first water level and the second water level.

Classes IPC  ?

• E21B 33/13 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues
• E02D 3/12 - Consolidation par mise en place dans le sol de produits solidifiants ou obturant les pores

Abrégé

A method and an apparatus for augmenting data of a three-dimensional image, an electronic device and a storage medium are provided. The method includes acquiring at least one three-dimensional sample image to be augmented; rotating, for each three-dimensional sample image, the three-dimensional sample image according to a predetermined rotation angle to obtain an initial sample image of a radial slice of the three-dimensional sample image on a transverse section, an initial sample image of the radial slice of the three-dimensional sample image on a median sagittal section and an initial sample image of the radial slice of the three-dimensional sample image on a coronal section; performing interpolation processing on a plurality of initial sample images to obtain a plurality of augmented sample images; and adding the plurality of augmented sample images into corresponding datasets to obtain an augmented three-dimensional sample image set.

Classes IPC  ?

• G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales
• G06T 19/20 - Édition d'images tridimensionnelles [3D], p. ex. modification de formes ou de couleurs, alignement d'objets ou positionnements de parties
• G06V 10/774 - Génération d'ensembles de motifs de formationTraitement des caractéristiques d’images ou de vidéos dans les espaces de caractéristiquesDispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant l’intégration et la réduction de données, p. ex. analyse en composantes principales [PCA] ou analyse en composantes indépendantes [ ICA] ou cartes auto-organisatrices [SOM]Séparation aveugle de source méthodes de Bootstrap, p. ex. "bagging” ou “boosting”

Abrégé

Disclosed are a method and a related device for determining a development status of a separation layer in a coal mine. The method includes: obtaining surface subsidence variation data of the coal mine within a preset time interval, rock stress variation data of a caving zone of the coal mine and water pressure variation data; determining a height decrease of the caving zone based on the rock stress variation data and the water pressure variation data; and determining the development status of the separation layer of the coal mine based on the height decrease and the surface subsidence variation data.

Classes IPC  ?

• E21C 41/18 - Procédés d'exploitation minière souterraineTracés à cet effet pour la lignite ou le charbon
• E21C 39/00 - Dispositifs pour tester sur place la dureté ou d'autres propriétés de matières minérales, p. ex. pour fournir des informations relatives au choix d'outils miniers appropriés
• E21F 17/18 - Adaptations particulières des dispositifs de signalisation ou d'alarme

Abrégé

A curvature controllable directional drilling device is disclosed. The drilling device includes: a drill bit, a power unit, a rigid bending unit, a bendable outer wall, and a wedge deflection tool. The power unit is to provide a rotary power to the drill bit. The rigid bending unit is set between the drill bit and the power unit, to bend on a basis of an initial curvature under an external force. The bendable outer wall is set on an outer side of the power unit and the rigid bending unit. The wedge deflection tool is set at one end of the bendable outer wall near the drill bit, to receive a reaction force and bend the rigid bending unit. By a coordination between the wedge deflection tool and the power unit, a drilling direction of the drill bit connected to the rigid bending unit can be adjusted.

Classes IPC  ?

• E21B 7/06 - Modification de la direction du trou de forage

Abrégé

A full-field quantification method for a complex discontinuous structure stress field, and an experimental system. The method comprises: preparing a transparent physical model (3) of a complex discontinuous structure; performing a shear photoelastic experiment on the physical model (3) to obtain an isochromatic fringe pattern of the physical model (3); and obtaining stress data of the physical model (3) in the continuous shearing process on the basis of the isochromatic fringe pattern. On the basis of the method and the system, quantitative characterization is carried out on the stress data of the complex discontinuous structure in the continuous shearing process, so that the full-field stress distribution and evolution laws in the continuous shearing process of the complex discontinuous structure can be effectively, accurately, visually and quantitatively characterized.

Classes IPC  ?

• G01N 3/24 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique en appliquant des efforts permanents de cisaillement

Abrégé

A rock burst active prevention and control mechanism, which includes: a NPR reinforcing mesh, rod bodies, NPR steel panels, an embedding reinforcement and a NPR steel fibre concrete, the NPR reinforcing mesh is formed by horizontal and vertical interlacing of NPR steel bars, and is provided against a surrounding rock of a tunnel, extending ends of the rod bodies are penetrated out of a hole of the NPR reinforcing mesh, the NPR steel panels are provided with multiple through-holes, the rod bodies, which are located on a same radial plane in the tunnel, are connected to one of corresponding NPR steel panels, the embedding reinforcement is connected between the extending ends of two adjacent rod bodies, the NPR steel fibre concrete is overlaid on the extending ends of the rod bodies and the embedding reinforcement.

Classes IPC  ?

• E21D 11/14 - Revêtement principalement avec du métal
• E21D 11/10 - Revêtement avec des matériaux de construction avec du béton coulé en placeCoffrage ou autre équipement adapté à cet effet
• E21D 11/15 - Plaques de revêtementGarnissages, c.-à-d. revêtements conçus pour retenir les matériaux de la formation ou pour transmettre la charge aux éléments de support principaux

Abrégé

A method for recovering lead, antimony and tin from complex lead-antimony hazardous waste material, comprising the following steps: (1) side-blown reduction smelting: adding a certain amount of gangue and reducing coal into a complex lead-antimony-containing hazardous waste material, and placing the mixture into a side-blown reduction furnace for reduction smelting, to obtain an alloy; (2) tin separation: placing the alloy discharged by the side blowing reduction furnace in a stainless steel anode pot, heating and stirring to remove tin; (3) copper separation: further reducing the temperature of the alloy after stirring and tin removal, adding xylose, stirring and collecting slag, to obtain a lead-antimony alloy having a copper content of less than 0.2%, and casting the lead-antimony alloy into a lead-antimony alloy anode plate; (4) electrolytic refining: placing the lead-antimony anode plate into a lead electrolytic bath for electrolysis, and ingot casting to produce a refined lead ingot. The present method can produce qualified refined lead, the tin slag contains more than 30% tin, and the anode slurry contains more than 60% antimony. A single device can adapt to various different hazardous waste raw materials, the production cost is greatly reduced, and the production period is short.

Classes IPC  ?

• C22B 7/04 - Mise en œuvre des scories
• C22B 7/00 - Mise en œuvre de matériaux autres que des minerais, p. ex. des rognures, pour produire des métaux non ferreux ou leurs composés
• C22B 5/10 - Procédés généraux de réduction appliqués aux métaux par voie sèche par des agents réducteurs carbonés solides
• C22B 9/02 - Affinage par liquation, filtration, centrifugation, distillation ou action d'ultrasons
• C22B 25/02 - Obtention de l'étain par voie sèche
• C22B 25/06 - Obtention de l'étain à partir de rognures, notamment de rognures d'étain
• C22B 25/08 - Affinage
• C22B 30/02 - Obtention d'antimoine
• C22B 15/00 - Obtention du cuivre

Abrégé

An efficient blasting method for similar cutting in a rock tunnel is provided, which relates to the technical field of rock tunneling. The method includes the following steps: drilling: drilling central holes, lower cutting holes, upper cutting holes, auxiliary holes and peripheral holes in a cross section area for tunnel construction; filling explosives: filling explosives into the central holes, the lower cutting holes, the upper cutting holes, the auxiliary holes and the peripheral holes; and blasting: blasting following blast holes in turn to complete full-face one-time blasting in a millisecond delay blasting mode. The method is applicable for construction scenes of drilling and blasting methods.

Classes IPC  ?

• F42D 1/22 - Dispositifs de maintien ou de positionnement des cartouches de sautage ou de bourrage dans les trous de mine
• E21D 9/00 - Tunnels ou galeries, avec ou sans revêtementsProcédés ou appareils pour leur exécutionTracé des tunnels ou des galeries
• F42D 3/04 - Applications particulières de techniques de sautage pour faire sauter des rochers

Abrégé

A tracer diffusion device includes: a first container, a second container, a drilling pipe, a unidirectional driving device, and a bidirectional driving device. The first container holds a first fluid containing a tracer. The second container holds a second fluid. A first end of the drilling pipe is connected to the first container; a second end of the drilling pipe is extended into a borehole and equipped with a first sealing capsule and a second sealing capsule. A plurality of through holes are arranged on the drilling pipe between the first sealing capsule and the second sealing capsule. The unidirectional driving device is arranged on the drilling pipe, for injecting the first fluid from the first container into the borehole between the first sealing capsule and the second sealing capsule. The bidirectional driving device is arranged between the second container and the first sealing capsule.

Classes IPC  ?

• E21B 47/11 - Localisation des fuites, intrusions ou mouvements du fluide utilisant des traceursLocalisation des fuites, intrusions ou mouvements du fluide utilisant la radioactivité
• E21B 33/124 - Unités à bouchons espacés longitudinalement pour isoler les espaces intermédiaires
• E21C 39/00 - Dispositifs pour tester sur place la dureté ou d'autres propriétés de matières minérales, p. ex. pour fournir des informations relatives au choix d'outils miniers appropriés
• E21F 16/00 - Drainage

Abrégé

A method for automatically picking up seismic velocity based on depth learning is disclosed. The method includes obtaining a seismic data and labels, and inputting the seismic data and the labels into a pre-trained depth learning model to obtain a velocity pick-up result. A structure of the depth learning model includes a residual network composed of three residual blocks. And after the residual network, a long-short term memory network and a full connection layer are further added. Each of the residual blocks is composed of three convolutional layers. An activation function between each residual block and each convolutional layer of the residual block is a Relu function. An activation function between the long-short term memory network and the full connection layer is a Relu function. The method for automatically picking up seismic velocity based on depth learning provided by the disclosure effectively improves the efficiency of seismic velocity pick-up.

Classes IPC  ?

• G01V 1/28 - Traitement des données sismiques, p. ex. pour l’interprétation ou pour la détection d’événements
• G01V 1/30 - Analyse

Abrégé

An arsenic-sulfur separation method for arsenic-tin-lead-zinc-antimony polymetallic ore, comprising the following steps: (1) recovering pyrrhotite from zinc tailings by means of magnetic separation; (2) separating arsenic and sulfur from pyrite and arsenopyrite by means of a flotation process to obtain a sulfur concentrate and an arsenic concentrate; and (3) obtaining fine-grained tin concentrate by means of gravity separation (shaker) from fine tin that may be present in the arsenic concentrate. The present method can be used to comprehensively recover sulfur, arsenic and tin from lead and zinc flotation tailings to comprehensively utilize resources, reduce tailing emissions, and mitigate environmental pollution.

Classes IPC  ?

• B03B 7/00 - Combinaisons de procédés ou d'appareils opérant par voie humide, avec d'autres procédés ou appareils, p. ex. pour la préparation des minerais ou cendres

Abrégé

A method for acquiring dynamic evolution information of a displacement field and a strain field inside a solid. In the method, a three-dimensional (3D) digital model preparation method, a digital speckle simulation algorithm, multi-material 3D color printing technology and a digital image correlation experimental system are comprehensively used, such that not only can the spatial distribution of internal cracks be displayed in a transparent manner when a 3D physical model is destroyed, but a dynamic evolution process of a displacement field and a strain field of a fixed section inside the model can also be monitored in real time. Different from existing physical experimental methods, the present method is a non-contact and non-destructive optical measurement method, has high precision and high accuracy, and overcomes the existing difficulty of real-time dynamic acquisition of quantitative information, such as a displacement field and a strain field inside a 3D heterogeneous solid. In addition, by means of the method, the study range of a digital image correlation method is effectively expanded from the measurement of a displacement field and a strain field of a two-dimensional surface of a solid, such that the digital image correlation method is suitable for studying a displacement field and a strain field inside a 3D solid model.

Classes IPC  ?

• G01B 11/16 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la déformation dans un solide, p. ex. indicateur optique de déformation
• G01N 21/84 - Systèmes spécialement adaptés à des applications particulières

Abrégé

A fluidized coal mining method for implementing CO2 underground storage, includes mining area division, tunneling mining, filling and supporting, roof and bottom plate sealing, and boundary surrounding rock sealing. A goaf formed by a mining device after tunneling and mining along a mining strip is filled and supported, and filling and supporting can form a high-strength supporting wall body, which not only provides an effective supporting effect for roof and bottom plate rocks, but also forms a filled and supported wall body; a space for underground storage of CO2 is formed between adjacent filled and supported wall bodies; at the same time, the mining device further seals the roof and a bottom plate of the goaf, and seals boundary surrounding rocks of a mine field, so that the entire mine field forms a whole closed space for the underground storage of CO2 after mining is completed.

Classes IPC  ?

• E21C 37/18 - Autres procédés ou dispositifs d'abattage avec ou sans chargement par l'électricité
• E21B 41/00 - Matériel ou accessoires non couverts par les groupes
• E21B 43/28 - Dissolution de matières minérales autres que des hydrocarbures, p. ex. par un agent de lessivage alcalin ou acide
• E21F 15/00 - Procédés ou dispositifs pour mettre en place les matériaux de remblayage dans les travaux du fond

Abrégé

A marmatite and jamesonite flotation method, comprising the following steps: (1) grinding lead-zinc ore containing jamesonite and marmatite to obtain a flotation ore pulp; (2) separately formulating four organic agents of nitrilotriacetic acid, Congo red dye, mercaptoacetic acid and thiourea into solutions having a mass concentration of 10% in a stirring barrel for later use; (3) quantitatively adding one of nitrilotriacetic acid, Congo red dye, mercaptoacetic acid or thiourea as an inhibitor into the ore pulp to be selected, then adding ethyl thio carbamate and a foaming agent, and carrying out flotation after pulp mixing is finished to obtain a lead rough concentrate; and (4) carrying out concentration operation three times on the obtained lead rough concentrate. The acting time of all the inhibitors is 6 min, and the acting time of ethyl thio carbamate and the acting time of the foaming agent are respectively 3 min and 1 min. The inhibitor used has good selectivity on marmatite, and efficient separation between jamesonite and marmatite can be achieved under a natural pH value.

Classes IPC  ?

• B03D 1/012 - Composés organiques contenant du soufre

Abrégé

A self-cage-breaking anti-seepage agent and an anti-seepage method. The self-cage-breaking anti-seepage agent comprises the following components in percentage by mass: 15-20% of main monomer, 3-8% of temperature-resistant and salt-resistant monomer, 0.5-3% of acid-sensitive monomer, 0.02-0.05% of water-soluble initiator, and the balance being water. The proportion is adjusted by using different types and dosages of anti-seepage agents to change the degradation characteristic of the anti-seepage agents, and finally, after the operation is finished, the soil can be recovered for use. The formula can be adjusted according to the ore body mining lifespan to change a cage-breaking time node. By using the present invention, the problems that the function of mined and separated soil cannot be recovered, the ecological environment is damaged, etc. due to a permanent anti-seepage layer can be effectively solved, and green mine construction is powerfully promoted.

Classes IPC  ?

• C22B 59/00 - Obtention des métaux des terres rares
• C22B 3/04 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation
• C08F 292/00 - Composés macromoléculaires obtenus par polymérisation de monomères sur des substances inorganiques
• C08F 220/58 - Amides contenant de l'oxygène en plus de l'oxygène de la fonction carbonamide

Abrégé

Disclosed are a testing system and method under fluid-solid coupling effects. A dynamic stress field during fluid flow, deformation of a porous rock framework, real-time evolution of the stress field and deformation of a fluid-solid interface under fluid-solid coupling effects can be obtained, on the basis of a collected photo-elastic stripe image and a surface deformation image. A stress field of a solid framework and fluid in porous rock, and a strain field of the solid framework and the fluid-solid interface under fluid-solid coupling effects can be visually and quantitatively displayed by means of a display device.

Classes IPC  ?

• G01L 1/24 - Mesure des forces ou des contraintes, en général en mesurant les variations des propriétés optiques du matériau quand il est soumis à une contrainte, p. ex. par l'analyse des contraintes par photo-élasticité
• G01N 3/12 - Test de pression
• G01N 15/08 - Recherche de la perméabilité, du volume des pores ou de l'aire superficielle des matériaux poreux

Abrégé

A method for blocking mine water inrush includes: grouting first slurry into an interface between the quaternary aquifer and the weathered bedrock aquifer in a fracture grouting manner until a first preset condition is met; forming a first water-resisting cushion after the first slurry is solidified; drilling a curve branch drill hole in the surface horizon downward; grouting second slurry into the curve branch drill hole in a downward grouting manner until a second preset condition is met; forming a second water-resisting cushion after the second slurry is solidified; grouting third slurry onto a top of the first water-resisting cushion in an upward grouting manner until a third preset condition is met; forming a third water-resisting cushion after the third slurry is solidified; wherein the third water-resisting cushion is located on the top of the first water-resisting cushion.

Classes IPC  ?

• E21D 11/10 - Revêtement avec des matériaux de construction avec du béton coulé en placeCoffrage ou autre équipement adapté à cet effet
• E21D 11/38 - Imperméabilisation à l'eauCalorifugeageImperméabilisation acoustiqueIsolation électrique
• E21B 33/13 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues

Abrégé

The present disclosure provides a noble metal-transition metal-based nano-catalyst thin film and a preparation method thereof, belonging to the fields of energy development and pollutant emission reduction. Based on a micro-nano processing technology, a noble metal-transition metal-based nano-catalyst thin film is loaded on a semi-cylindrical pipe with an inner thread structure, and heat generated is quickly accumulated on an upper surface of the catalyst to establish a large temperature gradient. By the insulation and high roughness of an alumina carrier layer and the inner thread structure of the pipe, a catalyst loading area is maximized and dispersion of noble metal atoms is enhanced. A transition metal-transition metal oxide thin film protects a noble metal nano-catalyst by core-shell wrapping, and a transition metal oxide prevents catalyst deactivation caused by oxygen occupying too many metal active sites.

Classes IPC  ?

• B01J 37/34 - Irradiation ou application d'énergie électrique, magnétique ou ondulatoire, p. ex. d'ondes ultrasonores
• B01J 37/02 - Imprégnation, revêtement ou précipitation
• B01J 23/89 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe du cuivre ou des métaux du groupe du fer combinés à des métaux nobles
• B01J 21/06 - Silicium, titane, zirconium ou hafniumLeurs oxydes ou hydroxydes
• B01J 35/02 - Catalyseurs caractérisés par leur forme ou leurs propriétés physiques, en général solides

Abrégé

A mining method is provided without coal pillars with roof-cutting and roadway retaining. This includes, comprising: constructing a gas drainage roadway and eliminating outbursts in a working face transport gate area and track gate area on opposite sides of a first mining working face; constructing various components with an air return roadway. Another end is communicated with the gas drainage roadway by the first process roadway, one end of the working face track gate is communicated with the air return roadway, the other end is communicated with the gas drainage roadway. A ventilation system is formed. This makes full use of the existing gas drainage roadway to meet the roadway layout requirements using the 110 construction method, increasing the use function of the roadway and increasing the reuse rate of the roadway, reducing the roadway engineering quantity before production, shortening the construction period and reduce the cost.

Classes IPC  ?

• E21C 41/00 - Procédés d'exploitation minière souterraine ou en surfaceTracés à cet effet
• E21C 41/18 - Procédés d'exploitation minière souterraineTracés à cet effet pour la lignite ou le charbon
• E21F 1/00 - Ventilation des mines ou tunnelsDistribution des courants de ventilation
• E21F 16/00 - Drainage

Abrégé

A large-deformation and constant-resistance support grouting anchor cable, that is, a grouting NPR anchor cable, comprising: an anchor cable body, wherein a tail end of the anchor cable body is provided with an anchoring section (18) used for being anchored at the hole bottom of a surrounding rock borehole (11); a constant-resistance device, which comprises a constant-resistance body (4) and a constant-resistance sleeve (6), wherein the constant-resistance body (4) is sleeved on the periphery of the anchor cable body, the constant-resistance sleeve (6) is arranged on the periphery of the constant-resistance body (4), and the constant-resistance body (4) is used for moving in the constant-resistance sleeve (6) in an axial direction of the anchor cable and with constant resistance; a constant-resistance device sealing component, which is arranged at a tail end of the constant-resistance device and used for plugging a gap between the anchor cable body and the surrounding rock borehole (11), wherein the constant-resistance device presses against the constant-resistance device sealing component; and an anchoring component, which comprises a tray (3) and an anchor device (2), wherein the anchor device (2) and the tray (3) are both arranged on the end of the anchor cable body extending out of the surrounding rock borehole (11) and are used for anchoring and locking the anchor cable body after the anchor cable body is tensioned to achieve a designed pre-tightening force.

Classes IPC  ?

• E21D 21/00 - Boulons d'ancrage pour la protection du toit, de la sole ou du revêtement des puits
• E21D 20/02 - Mise en place des boulons d'ancrage avec dispositions pour le scellement

Abrégé

The present disclosure relates to the technical field of mine ventilation, and in particular, to a three-dimensional ventilation method and system for mining by 110 construction method in coal and gas outburst mines. The three-dimensional ventilation method comprises: constructing a first process roadway and/or a second process roadway before stopping the working face; forming a first roof-cutting and roadway retaining section by a part of the working face track gate located in the goaf, and/or forming a second roof-cutting and roadway retaining section by a part of the working face transport gate located in the goaf during the stopping process of the working face, so that the air inlet of the first roof-cutting and roadway retaining section enters the gas drainage air return roadway through the first process roadway to form return air, and/or the inlet air of the second roof-cutting and roadway retaining section enters the gas drainage air inlet roadway through the second process roadway to form return air, the three-dimensional ventilation system is constructed by using the gas drainage air inlet roadway and the gas drainage air return roadway, during the conversion from the 121 construction method to the 110 construction method, a complete ventilation system can be formed in the roadway retaining section, real-time monitoring of the roadway retaining section can be carried while eliminating harmful gas accumulation in the retaining section.

Classes IPC  ?

• E21F 1/00 - Ventilation des mines ou tunnelsDistribution des courants de ventilation
• E21F 7/00 - Procédés ou dispositifs pour enlever les gaz, avec ou sans utilisation ultérieure de ceux-ci à une fin quelconque

Abrégé

Disclosed are a testing system and method under fluid-solid coupling effects. A dynamic stress field during fluid flow, deformation of a porous rock framework, real-time evolution of the stress field and deformation of a fluid-solid interface under fluid-solid coupling effects can be obtained, on the basis of a collected photo-elastic stripe image and a surface deformation image. A stress field of a solid framework and fluid in porous rock, and a strain field of the solid framework and the fluid-solid interface under fluid-solid coupling effects can be visually and quantitatively displayed by means of a display device.

Classes IPC  ?

• G01L 1/24 - Mesure des forces ou des contraintes, en général en mesurant les variations des propriétés optiques du matériau quand il est soumis à une contrainte, p. ex. par l'analyse des contraintes par photo-élasticité
• G06F 17/00 - Équipement ou méthodes de traitement de données ou de calcul numérique, spécialement adaptés à des fonctions spécifiques
• G01N 3/12 - Test de pression
• G01N 15/08 - Recherche de la perméabilité, du volume des pores ou de l'aire superficielle des matériaux poreux
• G01B 11/00 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques

Abrégé

222222 is realized, thereby ensuring that polluting gas discharged by the mining device does not come out of the ground, and reducing the harm of carbon emissions to the environment.

Classes IPC  ?

• E21C 41/16 - Procédés d'exploitation minière souterraineTracés à cet effet

Abrégé

A pseudo-triaxial pressure-maintaining loading device, comprising a cylinder body (10), an upper piston rod (20), a lower piston rod (30), and an annular oil bladder device (4). A hollow chamber, communicated up and down, of the cylinder body (10) sequentially comprises an upper chamber (11), an upper sealing chamber (12), a confining pressure chamber (13), a lower sealing chamber (14), and a lower chamber (15) from top to bottom. The annular oil bladder device (4) is provided in the confining pressure chamber (13). When an annular inner chamber (410) of the annular oil bladder is filled with a medium, the outer wall of the annular oil bladder is attached to the inner wall of the confining pressure chamber (13). A fidelity sample (7) is placed in a sample chamber defined by the lower end face of the upper piston rod (20), the upper end face of the lower piston rod (30), and the inner wall of the annular oil bladder. A plurality of testing devices are provided in the annular inner chamber (410) of the annular oil bladder. The pseudo-triaxial pressure-maintaining loading device can accommodate the fidelity sample (7) and carry out pressure-maintaining loading triaxial experiment on the fidelity sample by means of the annular oil bladder device (4) and the upper and lower piston rods (20, 30), thereby improving the accuracy and reliability of experimental data, and facilitating more true research of mechanical behaviors of rocks and measurement of rock mechanical performance indexes.

Classes IPC  ?

• F15B 15/14 - Dispositifs actionnés par fluides pour déplacer un organe d'une position à une autreTransmission associée à ces dispositifs caractérisés par la structure de l'ensemble moteur le moteur étant du type à cylindre droit

Abrégé

A pressure-preserving conventional triaxial compression loading apparatus of the present invention includes a pressure vessel, an upper piston rod, a lower piston rod, and an annular oil bag assembly. Hollow chambers of the pressure vessel in vertical communication sequentially include an upper chamber, an upper sealed chamber, a confining pressure chamber, a lower sealed chamber, and a lower chamber from top to bottom. The annular oil bag assembly is placed in the confining pressure chamber. When an annular inner chamber of an annular oil bag is filled with medium, an outer wall of the annular oil bag and an inner wall of the confining pressure chamber are attached together. A fidelity specimen is placed in a specimen chamber defined by a lower end surface of the upper piston rod, an upper end surface of the lower piston rod, and an inner wall of the annular oil bag. A variety of measuring sensors are disposed in the annular inner chamber of the annular oil bag. The pressure-preserving conventional triaxial compression loading apparatus of the present invention may accommodate a fidelity specimen, and use the annular oil bag assembly and the upper and lower piston rods to perform a pressure-preserving conventional triaxial loading test on the fidelity specimen, so that test data is more accurate and reliable, to help to study the mechanical behavior of in-situ rock and measure their properties more faithfully.

Classes IPC  ?

• G01N 3/10 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression engendrés par pression pneumatique ou hydraulique
• G01N 3/06 - Adaptations particulières des moyens d'indication ou d'enregistrement
• G01N 33/24 - Matériaux de la terre
• G01N 29/24 - Sondes
• G01N 29/14 - Recherche ou analyse des matériaux par l'emploi d'ondes ultrasonores, sonores ou infrasonoresVisualisation de l'intérieur d'objets par transmission d'ondes ultrasonores ou sonores à travers l'objet utilisant des techniques d'émission acoustique

Abrégé

A sealing method for a drilled hole in three zones of overburden comprises: blocking the fissure zone and the caving zone with at least one filling bag; and transporting prepared cement slurry to the drilled hole through a hollow drill pipe, so as to block the curved subsidence zone. The three zones of overburden comprise a fissure zone, a caving zone and a curved subsidence zone.

Classes IPC  ?

• E21B 33/13 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues
• E21B 27/00 - Récipients pour ramasser ou déposer des substances dans les trous de forage ou les puits, p. ex. cuillers pour ramasser de la boue ou du sableTrépans comportant des moyens pour ramasser des substances, p. ex. trépans à clapet
• E21F 17/00 - Procédés ou dispositifs destinés à être utilisés dans les mines ou tunnels, non couverts ailleurs

Abrégé

The present disclosure relates to a technical field of coal mining, particularly to a method of no-pillar mining with gob-entry retaining adapted for fully-mechanized top coal caving in a thick coal seam, which comprises the following steps: reinforcing support on a roof and two sides of a roadway; performing roof slitting blasting to form a pre-splitting slit; erecting a temporary support device and a gangue retaining device in the roadway along the retained entry; performing no caving within a range of a preset distance at an end of the working face near the retained entry side; and removing the temporary support device in the roadway after entry forming stabilizes, and closing the goaf to complete entry retaining. The roof slitting blasting is more beneficial to collapse of strata in the goaf, so that the strata in the slit can better fill stoping space after collapse, and the roof of the retained entry forms a short arm beam structure laterally, which avoids forming a long suspended roof in the goaf, and improves the stress of surrounding rock of gob-side entry retaining; coal caving is not performed in a certain range at the end of the working face of the retained entry side, which further ensures the filling effect of the goaf on the retained entry side, effectively limits the rotary sinking of blocks of the main roof, and greatly reduces effect on the stability of the retained entry.

Classes IPC  ?

• E21D 19/02 - Couvertures protectrices temporaires pour l'espace de travail pour l'utilisation dans les travaux en longue taille
• E21C 37/00 - Autres procédés ou dispositifs d'abattage avec ou sans chargement
• E21C 41/18 - Procédés d'exploitation minière souterraineTracés à cet effet pour la lignite ou le charbon
• E21D 20/02 - Mise en place des boulons d'ancrage avec dispositions pour le scellement

Abrégé

An ecological reconstructed sponge structure of a strip mine dump includes a three-layered sponge ecological structure arranged on a groundmass layer of the dump. From bottom to top, the three-layer sponge ecological structure comprises a water-resisting layer, a water-containing layer and a topsoil ecological layer. A thickness of the water-resisting layer is 100˜200 cm, a permeability coefficient of the water-resisting layer is 0.35˜0.7 m/d, and a degree of compaction is 1200˜1400 KPa. A thickness of the water-containing layer is 150˜250 cm, a permeability coefficient of the water-containing layer is 10˜20 m/d, and a degree of compaction is 800˜900 KPa. A thickness of the topsoil ecological layer is 40˜60 cm. Soil layer thicknesses and water content may be monitored through a ground penetrating radar.

Classes IPC  ?

• B09B 1/00 - Mise à la décharge des déchets solides
• E21C 41/32 - Réaménagement de surfaces d'exploitation minière

Abrégé

An aerial seeding bioremediation method for a coal mining subsidence area. The method includes obtaining a topographic map of the coal mining subsidence area; grading the topographic map in terms of ground slopes; determining seeding coefficients of aerial seeding operation according to a grading result of the ground slopes and ground coverage rates of the coal mining subsidence area; determining height adjustment parameters during unmanned aerial vehicle, UAV, aerial seeding; and performing, by a UVA, the aerial seeding operation according the grading result of the ground slopes, the seeding coefficients of the aerial seeding operation, and the height adjustment parameters. A slop grading technical standard of aerial seeding determined by the method of the present disclosure is applicable to complex topography of the coal mining subsidence area and helps with safety of the UVA.

Classes IPC  ?

• A01C 21/00 - Méthodes de fertilisation
• A01C 7/08 - Semoirs à la voléeSemoirs en lignes
• B64U 101/32 - Véhicules aériens sans pilote spécialement adaptés à des utilisations ou à des applications spécifiques à l’imagerie, à la photographie ou à la vidéographie à la cartographie ou à la topographie

Abrégé

A slide valve type hydraulic reversing valve having a special sealing valve core structure, comprising a reversing valve body (1), return springs (6), linear rolling bearings (5), a slide valve core (2) and sealing rings (12, 15); the reversing valve body is provided therein with a valve hole (4) fitting the slide valve core and a plurality of channels in communication with liquid inlet/outlet passages, the slide valve core is in coaxial clearance fit with the valve hole, and two ends of the slide valve core are each sleeved with a return spring coaxial with the slide valve core, left and right cylinders of the slide valve core are rotatably connected to the left and right valve bodies by means of the left and right linear rolling bearings, the slide valve core is provided with a plurality of annular flow guiding grooves (10), the positions needing to be sealed between the slide valve core and the valve bodies are not sealed by a clearance fit with a rigid shaft hole, but are provided with sealing trenches (11), and the sealing rings made of a polymer material are provided in the trenches for sealing. The hydraulic reversing valve effectively ensures the sealing performance of the slide valve type hydraulic reversing valve by means of the sealing structures between the valve core and the valve hole under the emulsion, water and other water-based transmission media, improves the working reliability of the slide valve type hydraulic reversing valve, and expands the usage range of the slide valve type hydraulic reversing valve.

Classes IPC  ?

• F15B 13/02 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs

Abrégé

A magnetic suspension local ventilator for mining, comprising a housing unit and a ventilation unit which is mounted in the housing. The ventilation unit comprises an inner housing, a protective sleeve (12), a magnetic bearing (2), an electromagnetic coil (22), a stator (13), a rotor (14), a rotating shaft (15), an impeller (17) and a limited-position rolling ball (21). The protective sleeve (12) is fixed in the housing. A coolant (16) passage is reserved between the protective sleeve (12) and the housing. The magnetic bearing (2) comprises an inner sleeve magnetic ring (11), an outer sleeve magnetic ring (10) and a bearing sleeve. The rotating shaft (15) has a non-contact rotatable connection to the protective sleeve (12) by means of the magnetic bearing (2) and the limited-position rolling ball (21). The inner sleeve magnetic ring (11) is suspended using the electromagnetic coil (22). The magnetic suspension local ventilator for mining can reduce abrasion and noise, improve the air volume and the ventilation stability of an excavation work surface, and meet the need of coal mines with special requirements such as explosion prevention.

Classes IPC  ?

• F04D 25/16 - Combinaisons de plusieurs pompes
• F04D 25/08 - Ensembles comprenant des pompes et leurs moyens d'entraînement le fluide énergétique étant l'air, p. ex. pour la ventilation
• F04D 29/058 - Paliers magnétiquesPaliers électromagnétiques
• F04D 29/58 - RefroidissementChauffageRéduction du transfert de chaleur
• H02K 9/19 - Dispositions de refroidissement ou de ventilation pour machines avec enveloppe fermée et circuit fermé de refroidissement utilisant un agent de refroidissement liquide, p. ex. de l'huile
• H02K 5/16 - Moyens de support des paliers, p. ex. supports isolants ou moyens pour ajuster les paliers dans leurs flasques

Abrégé

A visualization system and method for a multiphase fluids displacement seepage experiment with large viscosity difference in a complex pore structure. The visualization system includes: an injection pump assembly, a visualized complex pore model, a vacuum pressure pump and an image acquisition device; the system and method are printed by a 3D printing device to form the visualized complex pore model with at least two permeability, and displacement fluid mediums of different viscosities are injected into the visualized complex pore model through different injection pumps during an experiment, so that not only is the penetration of the same viscosity in the complex pore structure with different permeability observed, but also the displacement and plugging effect of different viscosities successively entering the complex pore structure with different permeability is realized.

Classes IPC  ?

• G01N 23/00 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou
• G01N 15/08 - Recherche de la perméabilité, du volume des pores ou de l'aire superficielle des matériaux poreux
• G01N 23/046 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux en utilisant la tomographie, p. ex. la tomographie informatisée

Abrégé

A device for active measurement of cross-fault interface Newton force in a shale gas mining process, comprising an NPR anchor cable (1) and at least one pair of measurement assemblies (2) symmetrically sleeved on the NPR anchor cable. The measurement assemblies comprise a platform mechanism (21), an squeezing mechanism (22), a constant resistance mechanism (23) and a sensing mechanism (24). Further disclosed is a method for active measurement of cross-fault interface Newton force in a shale gas mining process, the specific steps being: acquiring at least one pair of symmetrically arranged measurement assemblies and inserting same into a rock hole so that each pair of symmetrically arranged measurement assemblies are respectively located on two sides of a rock fault, and measuring in real time key parameters influencing fault stability. The device and the method for measurement is able to, for identified hazard faults, accurately and constantly collect in real time the key parameters influencing fault stability on the cross-fault interface in a fracturing process of the hazard fault, and thus providing data support for the prediction of disasters.

Classes IPC  ?

• E21B 49/00 - Test pour déterminer la nature des parois des trous de forageEssais de couchesProcédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits
• E21D 21/00 - Boulons d'ancrage pour la protection du toit, de la sole ou du revêtement des puits

Abrégé

An experimental platform for measuring coal spontaneous combustion characteristic parameters, which belongs to the field of coal spontaneous combustion experimental technology, and comprises: an intelligent temperature-controlled reaction cabinet (5); a gas supply assembly, which comprises a plurality of gas supply apparatuses (1); a gas distribution instrument (2), the gas supply apparatuses (1) all being in communication with the gas distribution instrument (2), and the gas distribution instrument (2) being in communication with the inside of the intelligent temperature-controlled reaction cabinet (5); a suspended-type weighing apparatus (12), which is arranged at the top end of the intelligent temperature-controlled reaction cabinet (5); a suspended basket (8), the suspended basket (8) being connected to the suspended-type weighing apparatus (12); a gas chromatograph (14), which is in communication with the inside of the intelligent temperature-controlled reaction cabinet (5); an infrared thermal imaging system; a temperature sensing assembly, which is arranged within the intelligent temperature-controlled reaction cabinet (5), and which comprises an ambient temperature sensing apparatus (10) and a coal sample temperature sensing apparatus (9); and computers (16). The present experimental platform is able to simulate the environment in a mine, and can dynamically capture characteristic parameters during coal spontaneous combustion such as coal mass, gas products, and heating rates for various marker points in a coal sample.

Classes IPC  ?

• G01N 25/22 - Recherche ou analyse des matériaux par l'utilisation de moyens thermiques en recherchant la production de quantités de chaleur, c.-à-d. la calorimétrie, p. ex. en mesurant la chaleur spécifique, en mesurant la conductivité thermique sur l'oxydation par combustion ou par catalyse, p. ex. des constituants des mélanges gazeux
• G01N 33/22 - CombustiblesExplosifs
• G01D 21/02 - Mesure de plusieurs variables par des moyens non couverts par une seule autre sous-classe

Abrégé

Provided are an NPR anchor rod monitoring and control system and method for a rock slope collapse disaster. The system comprises a flexible anchor net, an NPR anchor rod, a monitoring unit, a base station and a monitoring center. The flexible anchor net is laid on the surface of a jointed rock mass. The NPR anchor rod is used for reinforcing the jointed rock mass and a stable rock mass. The monitoring unit is installed on the NPR anchor rod. The base station is in communication connection with the monitoring unit. The monitoring center is in communication connection with the base station. When the rock mass collapses, the NPR anchor rod is greatly deformed, absorbing a large amount of energy, and loose gravel may be controlled by means of the flexible anchor net having high-strength and high-toughness. For a large-scale rock collapse, the present invention allows for effective control and delay of collapse disaster time, such that more time is provided for personnel and property evacuation. For a small-scale rock collapse, the present invention allows for the rock mass collapse to be controlled, and a disaster caused by falling rock mass may be effectively avoided.

Classes IPC  ?

• E02D 33/00 - Test des fondations

Abrégé

An experimental method and system for simulating the evolution of reservoir fracture stress field, the experimental method comprises the following steps: (S1) preparing horizontal well fracturing model (100); (S2) applying boundary loads and constraints to the horizontal well fracturing model (100); (S3) injecting fracturing fluid or fracturing gas into a fracturing wellbore (130) of the horizontal well fracturing model (100) after loading for fracturing; in a fracturing stage, a photoelastic fringe image of the horizontal well fracturing model (100) is obtained by an optical phase shift method; the fracturing stage comprises an initial state before fracturing fluid or fracturing gas is injected and an end state after fracturing is completed. The experimental method and system can effectively simulate the whole process of horizontal well fracturing, and accurately obtain the variation law of reservoir stress field and its influence on crack propagation during horizontal well fracturing.

Classes IPC  ?

• E21B 41/00 - Matériel ou accessoires non couverts par les groupes
• G01V 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
• E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures

Abrégé

The present disclosure discloses an intelligent position sensing system based on spatial three-dimensional model image matching, which realizes three-dimensional precise positioning and target orientation positioning of closed spaces, such as a coal mine. The position sensing system includes a three-dimensional GIS server, a position matching server, a wireless camera, and a wireless access device. Position sensing is realized by comparing an image collected by the wireless camera with a two-dimensional image generated by rendering. The disclosure positions a target without carrying a special wireless positioning card, and can realize three-dimensional precise positioning, including target orientation, by only carrying a camera with a wireless communication function in combination with a wireless positioning technology, a three-dimensional GIS technology, and a digital image processing technology, which can be widely applied to the field of precise positioning of confined spaces, such as factories, coal mines, and subways, and can be widely applied and promoted.

Classes IPC  ?

• G06T 17/05 - Modèles géographiques
• G06T 7/73 - Détermination de la position ou de l'orientation des objets ou des caméras utilisant des procédés basés sur les caractéristiques
• H04W 4/021 - Services concernant des domaines particuliers, p. ex. services de points d’intérêt, services sur place ou géorepères
• G06V 20/64 - Objets tridimensionnels
• G06F 18/22 - Critères d'appariement, p. ex. mesures de proximité

Abrégé

An experiment visualization system and an experiment method for multiphase large-viscosity-difference fluid displacement percolation in a complex pore structure. The experiment visualization system comprises: an injection pump assembly (12), a visualization complex pore model (1), a vacuum pressure pump and an image acquisition device (11). The system and the method form a visualization complex pore model (1) with at least two permeabilities by means of printing by a 3D printing device. In an experiment, displacement fluid media with different viscosities are injected into the interior of the visualization complex pore model (1) respectively by different injection pumps (7, 8, 9), such that not only the permeation of fluids with the same viscosity in a complex pore structure with different permeabilities can be observed, but also the displacement blocking effect by introducing different viscosities into the complex pore structure with different permeabilities in sequence can be achieved, and the percolation experiment research under different conditions can be achieved by controlling the viscosity difference of the displacement fluid media. The flow path of fluids in the complex structure during the described experiment can be observed from the outside, and an experimental image inside the visualization complex pore model (1) during percolation is captured by the image acquisition device (11) in real time. The system can accurately, rapidly, economically and intuitively achieve the percolation experiment of different fluids with various viscosities in a pore model with a large permeability difference.

Classes IPC  ?

• G01N 15/08 - Recherche de la perméabilité, du volume des pores ou de l'aire superficielle des matériaux poreux

Abrégé

A vertical ventilation method and system suitable for coal and gas outburst mining using a 110 mining method. The vertical ventilation method comprises: before working face mining, construct a first process roadway (8) and/or a second process roadway (9); during working face mining, the part of a working face track gateway (5) located in a goaf forms a first roof-cut retained roadway section (11) and/or the part of a working face transportation gateway (4) forms a second roof-cut retained roadway section (12) such that intake air of the first roof-cut retained roadway section (11) enters a gas drainage return air roadway (7) through the first process roadway (8) to form return air, and/or intake air of the second roof-cut retained roadway section (12) enters a gas drainage intake air roadway (6) through the second process roadway (9) to form return air. The vertical ventilation system constructed using the gas drainage intake air roadway (6) and the gas drainage return air roadway (7) can monitor retained roadway sections in real time and eliminate the accumulation of harmful gases in the retained roadway sections while implementing the ventilation of the retained roadway sections.

Classes IPC  ?

• E21F 1/00 - Ventilation des mines ou tunnelsDistribution des courants de ventilation
• E21F 1/10 - Portes d'aérage
• E21F 7/00 - Procédés ou dispositifs pour enlever les gaz, avec ou sans utilisation ultérieure de ceux-ci à une fin quelconque

Abrégé

An automatic coal mining machine and a fluidized coal mining method are provided. A first excavation cabin is configured to cut coal seam to obtain raw coal and to be transported to a first coal preparation cabin for separating coal blocks from gangue. Then, the obtained coal blocks are transported to a first fluidized conversion reaction cabin. The first fluidized conversion reaction cabin converts the energy form of the coal block into liquid, gas or electric energy, which is transported to a first energy storage cabin for storing. Coal mining and conversion are carried out in underground coal mines, so it is not necessary to raise coal blocks to the ground for washing and conversion, thereby reducing the transportation cost of coal, improving the utilization degree of coal, and avoiding the pollution of the ground environment caused by waste in the mining and conversion process.

Classes IPC  ?

• E21C 35/24 - Télécommande spécialement adaptée aux machines pratiquant des saignées ou libérant complètement la matière minérale
• E21C 41/18 - Procédés d'exploitation minière souterraineTracés à cet effet pour la lignite ou le charbon
• E21D 9/10 - Exécution en utilisant des machines à forer ou à inciser
• C10G 1/00 - Production de mélanges liquides d'hydrocarbures à partir de schiste bitumineux, de sable pétrolifère ou de matières carbonées solides non fusibles ou similaires, p. ex. bois, charbon
• E21D 9/11 - Exécution en utilisant des machines à forer ou à inciser avec une tête de forage de type rotatif coupant simultanément toute la section transversale, c.-à-d. tunneliers pleine-face
• E21D 9/087 - Exécution en utilisant un bouclier de percement avec des moyens complémentaires de foration ou d'incision avec une tête de forage de type rotatif coupant simultanément toute la section transversale, c.-à-d. tunneliers pleine-face
• E21F 13/00 - Transport spécialement adapté aux conditions du fond
• B03B 5/18 - Bacs à tamis mobile
• C10J 3/50 - Dispositifs de chargement en combustible
• E21C 25/16 - Machines pratiquant des saignées uniquement par l'action d'un ou plusieurs disques, scies ou roues, coupants, tournant sur eux-mêmes
• E21C 35/20 - Caractéristiques générales de l'appareillage d'évacuation du havrit, p. ex. pour le chargement des convoyeurs

Abrégé

A roof-cutting tunnel-retaining no-pillar mining method, comprising the following steps: constructing a gas extraction tunnel and performing outburst elimination on a working surface transport gate road (4) region and a working surface track gate road (5) region; constructing the working surface track gate road (5), the working surface transport gate road (4), a first process tunnel (8) and a second process tunnel (9), one end of the working surface track gate road (5) being in communication with an air intake main tunnel (1), and the other end being in communication with the gas extraction tunnel by means of the first process tunnel (8), one end of the working surface transport gate road (4) being in communication with the air intake main tunnel (1), and the other end being in communication with the gas extraction tunnel by means of the second process tunnel (9); and performing working surface stoping to form a tunnel-retaining segment, the tunnel-retaining segment being in communication with the gas extraction tunnel by means of the first process tunnel (8) and the second process tunnel (9) to form a ventilation system.

Classes IPC  ?

• E21C 41/18 - Procédés d'exploitation minière souterraineTracés à cet effet pour la lignite ou le charbon
• E21F 1/00 - Ventilation des mines ou tunnelsDistribution des courants de ventilation
• E21F 1/10 - Portes d'aérage

Abrégé

An experimental method and system for simulating the evolution of a fracturing stress field of a reservoir. The experimental method comprises the following steps: preparing a horizontal well fracturing model (100) (S1); applying boundary load and constraint to the horizontal well fracturing model (100) (S2); injecting a fracturing fluid or a fracturing gas into a fracturing wellbore (130) of the loaded horizontal well fracturing model (100), and at the fracturing stage, obtaining a photoelastic fringe image of the horizontal well fracturing model (100) by an optical phase shift method (S3), the fracturing stage comprising an initial state before the fracturing fluid or the fracturing gas is injected, and the end state after the fracturing is completed. The experimental method and system can effectively simulate the whole horizontal well fracturing process, and accurately obtain the change law of the stress field of the reservoir in the horizontal well fracturing process, and the influence of the change law on the crack propagation.

Classes IPC  ?

• G01N 3/12 - Test de pression
• G01N 3/18 - Exécution de tests à des températures élevées ou basses

Abrégé

An intelligent detection and recognition system and method for a coal-rock interface of a mine are provided. The intelligent detection and recognition system mainly includes an intelligent lifting support fastened to the top of a shearer, a non-contact radar antenna disposed at the top of the intelligent lifting support, and an operating terminal with which the radar antenna wirelessly conducts information transmission. In an operating state, a radiation direction of the radar antenna is perpendicular to the surface of a to-be-detected coal seam, and the operating terminal is configured to acquire radar data of the to-be-detected coal seam collected by the radar antenna, and draw and display a coal-rock horizon occurrence curve according to the radar data.

Classes IPC  ?

• E21C 35/24 - Télécommande spécialement adaptée aux machines pratiquant des saignées ou libérant complètement la matière minérale
• E21C 31/08 - Moyens d'entraînement incorporés aux machines pratiquant des saignées ou libérant complètement la matière minérale de la veine pour ajuster des parties de la machine

Abrégé

A mining machine applicable to fluidized mining and a mining method therefor are provided herein. A microwave transmitting mechanism, a liquid jet drill rod and a cutter-head are arranged at the head of a first excavation device of the mining machine. The ore body in front is first processed by the microwave transmitting mechanism and the liquid jet drill rod to reduce the strength of the ore body, which facilitates subsequent mining of the ore body, lowers the hardness requirements of the cutter-head, and reduces the wearing of the cutter-head. With this mining machine mining the ore body, the mined ores can be directly converted, under the ground, into resources in the easily transportable form, without transporting the ore to the surface for conversion, which saves the cost of transporting the ore to the surface.

Classes IPC  ?

• E21D 9/10 - Exécution en utilisant des machines à forer ou à inciser
• E21D 9/00 - Tunnels ou galeries, avec ou sans revêtementsProcédés ou appareils pour leur exécutionTracé des tunnels ou des galeries
• E21C 37/16 - Autres procédés ou dispositifs d'abattage avec ou sans chargement en mettant le feu ou par des procédés analogues basés sur un effet thermique
• E21D 9/08 - Exécution en utilisant un bouclier de percement avec des moyens complémentaires de foration ou d'incision
• E21D 9/11 - Exécution en utilisant des machines à forer ou à inciser avec une tête de forage de type rotatif coupant simultanément toute la section transversale, c.-à-d. tunneliers pleine-face
• E21C 25/60 - Exécution de saignées par jets d'eau ou d'un autre liquide
• E21C 25/66 - Machines pour pratiquer des saignées avec dispositions additionnelles pour forage
• E21C 25/68 - Machines pour pratiquer des saignées, combinées à un appareillage pour enlever, p. ex. par chargement, le matériau abattu par d'autres moyens

Abrégé

Disclosed is a safe and environment-friendly rock blasting device. The device comprises a controller (4), a high-voltage power supply (3), an energy storage capacitor (5), a discharging switch (6), a high-voltage electrode (8), a hole packer (9), and a water injection system, wherein the controller (4) is separately in control connection with the high-voltage power supply (3) and the discharging switch (6), and is used for controlling the high-voltage power supply (3) to charge the energy storage capacitor (5) and controlling the discharging switch (6) to be turned on and off; the energy storage capacitor (5) is connected to the high-voltage electrode (8) by means of the discharging switch (6); the high-voltage electrode (8) is used for being provided in a rock drilled hole (2); the water injection system is used for injecting water into the rock drilled hole (2); the hole packer (9) is a rubber ring hole packer and is used for sealing a hole opening of the rock drilled hole (2); the rubber ring hole packer is provided with a cable hole for allowing a high-voltage cable (7) to penetrate through; the high-voltage cable (7) is a cable connected to the discharging switch (6) and the high-voltage electrode (8); and the size of the cable hole matches that of the cross section of the high-voltage cable (7). Further disclosed is a safe and environment-friendly rock blasting method. The safe and environment-friendly rock blasting device and method have the advantages of being good in environmental friendliness and high in safety.

Classes IPC  ?

• E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures

Abrégé

A characterization method for the full-field evolution of a surrounding rock stress field and an activation mechanism of adjacent faults, comprising: according to real mine fault features, determining the thickness and position of each rock layer and fault according to the principle of the ratio of similarity, generating a mine fault digital model, and printing by using a multi-material high-precision layered three-dimensional molding 3D printer so as to obtain a mine fault structure test model; applying a biaxial load to the test model by using a dual-axis synchronous plane loading test machine to simulate an ground stress state during the mining process of coal seams; cutting along the direction of an excavation work face by using a cutting test machine to simulate the mining process of the coal seams of a mine, and acquiring isoclinic line and isochromatic line fringe pictures of the test model by means of a dynamic photoelastic testing system in combination with a phase shift method; and calculating the stress field by means of a processor from the isoclinic line and isochromatic line fringe pictures. The method is able to accurately and quickly quantitatively characterize the full-field evolution of the surrounding rock stress field and the distribution law of the full-field stress distribution and evolution of adjacent faults during the mining process of the coal seams.

Classes IPC  ?

• G01N 3/12 - Test de pression

Abrégé

An experiment system and transparent experiment method for replicating fluid displacement in a pore structure of a natural rock mass are provided. The natural pore structure is extracted and a digital porous model corresponding to the natural rock mass is reconstructed with the image processing method. Based on the digital porous model, a three-dimensional pore structure model with a transparent and visible internal structure is printed by a 3D printing device, such that the pore space inside the three-dimensional pore structure model is visible. In this way, the whole fluid flow during the displacement-seepage process within the natural rock mass can be replicated and visually observed from the outside when performing the displacement-seepage experiment. Further, temperature, flow rate, and pressure can be accurately controlled, to replicate various experiment conditions, so as to perform quantitative analysis on distribution features of a seepage field and a fluid speed field.

Classes IPC  ?

• G01N 15/08 - Recherche de la perméabilité, du volume des pores ou de l'aire superficielle des matériaux poreux
• B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
• B33Y 80/00 - Produits obtenus par fabrication additive
• B29C 64/393 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive

Abrégé

An experiment system and experiment method for recognizing a planar complex structure model plastic zone. In experiment, a planar complex structure experiment model in the present invention is placed in a loading box containing a refractive index-matching fluid, a loading experimental machine is controlled by using a control means to apply a two-way pressure to the planar model, and moreover, by combining a white light four phase-shift method and a monochromatic light six phase-shift method, isoclinic line and isochromatic line fringe images of the model are respectively obtained; the control means can obtain an overall fringe order of the planar complex structure experiment model on the basis of the obtained fringe images, and the obtained result is substituted into the formula for calculation; quantitative division of plastic zones is automatically performed on the model according to the result. The present invention can conveniently, quickly and accurately recognize ranges of plastic zones of a two-dimensional complex structure model under a two-way loading condition.

Classes IPC  ?

• G01L 1/24 - Mesure des forces ou des contraintes, en général en mesurant les variations des propriétés optiques du matériau quand il est soumis à une contrainte, p. ex. par l'analyse des contraintes par photo-élasticité
• G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression

Abrégé

Disclosed is a system and a method for monitoring water inrush, including: a host terminal, a field host, at least one controller and at least one electrode array. Each electrode array is placed in one borehole and to detect electric field signals of surrounding rocks around the borehole; each controller connects with one electrode array and is to control the electrode array to carry out a high-density induced polarization measurement on the surrounding rocks; the field host connects with the controller and is to send control signals to the controller, receive and process the electric field signals output by the electrode array; and the host terminal connects with the field host and is to receive the electric field signals processed by the field host, determine changes on apparent resistivity and apparent chargeability of the surrounding rocks, and determine whether there exists water inrush according to the changes.

Classes IPC  ?

• G01V 3/26 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation spécialement adaptée au carottage fonctionnant au moyen de champs magnétiques ou électriques produits ou modifiés par la formation terrestre environnante ou par les dispositifs de détection
• G01V 3/34 - Transmission de données aux appareils d'enregistrement ou de traitementEnregistrement de données
• G01V 3/38 - Traitement de données, p. ex. pour l'analyse, pour l'interprétation ou pour la correction
• G01V 9/02 - Détermination de l'existence ou du cours d'une eau souterraine
• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage par énergie électromagnétique, p. ex. gammes de fréquence radio
• E21B 47/003 - Détermination des volumes du puits ou trou de forage
• E21F 17/06 - Distribution de l'énergie électriqueRéseaux de câblesConduits pour câbles
• E21F 17/18 - Adaptations particulières des dispositifs de signalisation ou d'alarme

Abrégé

A mine field layout method suitable for fluidized mining of coal resources is provided. A main shaft and an air shaft are provided in the mine field, the bottom of the main shaft is located in the shallow horizontal coal seam zone, and the bottom of the air shaft is located in the deep horizontal coal seam zone. The horizontal main roadways are arranged at two boundaries along the strike of the coal seam, and inclined main roadways are arranged at two boundaries along the dip direction of the coal seam. Connecting roadways are located inside the mine field and are in communication with the horizontal main roadways. In the coal mining stage, the coal resources can be converted into the fluidized energy product and/or electricity by an unmanned automatic mining machine.

Classes IPC  ?

• E21C 41/16 - Procédés d'exploitation minière souterraineTracés à cet effet
• E21C 41/18 - Procédés d'exploitation minière souterraineTracés à cet effet pour la lignite ou le charbon
• E21C 45/00 - Procédés hydrauliques d'exploitation minièreMonitors hydrauliques

Abrégé

Disclosed are a mining machine and a mining method applicable to fluidized mining. A first mining device (10) of the mining machine is provided on the head with a microwave transmitting mechanism (101), a liquid jet drill rod (105) and a cutter head (102). The microwave transmitting mechanism (101) and the liquid jet drill rod (105) are first used to process ore bodies in the front to reduce the strength of the ore bodies, thereby reducing the hardness requirement and wear of the cutter head (102). The cutter head (102) is then used to cut the ore bodies with reduced strength to obtain solid mineral raw materials to be transported to a first sorting device (20). The first sorting device (20) is used to separate ores and waste rocks in the solid mineral raw materials to transport the ores to a first fluid state conversion device (30). The first fluid state conversion device (30) converts the ores into resources in an easily transportable form, and the easily transportable resources are transported to a first energy storage device (40) to be stored therein. The mining machine is used for mining ore bodies so as to directly convert underground the ores into the resources in the easily transportable form, ores are not required to be transported to the ground for conversion, which saves the cost of transportation.

Classes IPC  ?

• E21B 43/24 - Procédés de récupération assistée pour l'extraction d'hydrocarbures utilisant la chaleur, p. ex. injection de vapeur

Abrégé

A method for controlling the stability of surrounding rock applicable to a mining region main roadway of a coal mine. The method comprises the following steps: providing a reinforcing support at a roof and two sides of a mining region main roadway in addition to existing supports; providing a safe roadway along a mining stopping line of a current working face required by the design of a coal mine, providing a support for the safe roadway, and forming a protective coal pillar between the safe roadway and the mining region main roadway; forming, in the safe roadway, a slot in the roof for blasting, arranging blast holes at a roadway corner line at one side of the current working face, and forming a pre-splitting slot; and after extraction of the current working face advances to the safe roadway, that is, after coal mining of the working face is completed, performing extraction on a subsequent working face. Roof cutting and stress release are performed at the mining stopping line of the working face, thereby reducing the impact of mining disturbances on the stability of the mining region main roadway during extraction of the working face, improving, by means of a reinforcing support, the yielding and deformation capabilities of the mining region main roadway, and further improving the stability of the surrounding rock of the mining region main roadway.

Classes IPC  ?

• E21D 9/14 - Tracé des tunnels ou des galeriesParticularités de construction des tunnels ou des galeries, non prévues ailleurs, p. ex. têtes, atténuation de la lumière du jour aux entrées de tunnels

Abrégé

A non-pillar automatically formed roadway-based mining method applicable to fully mechanized top-coal caving of a thick coal seam, comprising: reinforcing and supporting a roof and two sides of a roadway; slotting and blasting a construction roof to form pre-split cracks; erecting a temporary supporting device and a block gangue device in the roadway along a retained entry; not performing coal caving within a preset distance near a working face end of an entry retaining side; after the roadway formed is stabilized, removing the temporary supporting device in the roadway, and closing a goaf, so that entry retaining is completed. The roof slotting and blasting facilitate the caving of a rock stratum in the goaf, so that a stoping space can be well filled after the rock stratum in the slot is caved, a short arm beam structure is formed in the lateral direction of the entry-retaining roof, the formation of a long suspended roof in the goaf is avoided, and the surrounding rock stress of the gob-side retained entry is improved. Coal caving is not performed within a certain range of the working face end of the entry retaining side, the filling effect of the empty area of the entry retaining side is further ensured, rotary sinking of basic roof block bodies is effectively restricted, and the impact on the entry retaining stability is reduced.

Classes IPC  ?

• E21C 37/00 - Autres procédés ou dispositifs d'abattage avec ou sans chargement

Abrégé

A quantitative visualization experimentation system for an induced-stress field in rock mass comprises: a planar model, a planar-model loading device (10), a photoelasticity experimentation device (9), and a mining space formation simulation device (11). The planar model is made from a material having stress birefringence properties obtained by means of high-speed 3D prototype manufacturing technology. The planar model is placed in the planar-model loading device (10). The planar-model loading device (10) provides boundary load or boundary constraints for the planar model. The planar model is located on an optical path of the photoelasticity experiment device (9). The planar model is connected to the mining space formation simulation device (11). The mining space formation simulation device (11) changes boundary conditions of the planar model, or causes a cavity to be formed in the planar model. The photoelasticity experiment device (9) acquires a photoelastic stripe image of the planar model. The quantitative visualization experimentation system for an induced-stress field in rock mass effectively simulates mining, digging, drilling and other construction disturbance processes, and intuitively and quantitatively displays a rock mass induced-stress full-field information similarity model and changes of the complex structure thereof.

Classes IPC  ?

• G01L 1/24 - Mesure des forces ou des contraintes, en général en mesurant les variations des propriétés optiques du matériau quand il est soumis à une contrainte, p. ex. par l'analyse des contraintes par photo-élasticité

Abrégé

The present invention provides an experimental platform for simulating a coal rock disaster of a coal mine extraction, including a base device, a coal simulation device, an immediate roof simulation device, a hydraulic support and a removable impact device. The coal simulation device is fixedly disposed on the base device; the hydraulic support is fixed on the base device and is located at one side of the coal simulation device; the immediate roof simulation device is disposed above the coal simulation device and the hydraulic support; the removable impact device is disposed above the immediate roof simulation device; the immediate roof simulation device is a rectangular frame; the rectangular frame is configured to pave a bulk simulation material and an immediate roof simulation material sequentially from the bottom up; and the removable impact device can impact the immediate roof simulation material and the bulk simulation material.

Classes IPC  ?

• G01M 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
• G01M 17/00 - Test des véhicules
• G05B 17/02 - Systèmes impliquant l'usage de modèles ou de simulateurs desdits systèmes électriques
• G01M 7/08 - Test de résistance au choc
• E99Z 99/00 - Matière non prévue ailleurs dans la présente section

Abrégé

A transparent constraint apparatus for the normal deformation of a planar model, including rigid transparent retainer plates, a planar model, and magnetic force components. The magnetic force components are provided at edge positions of the rigid transparent retainer plates; the normal direction of the planar model is parallel to the normal direction of the two rigid transparent retainer plates, and said two retainer plates are symmetrically arranged relative to the plane of symmetry of the planar model; the magnetic force components are symmetrically arranged relative to the plane of symmetry of the planar model, mutually symmetrical magnetic force components producing mutually attractive magnetic force. The transparent constraint apparatus solves the problem of constraining the normal deformation of a planar model under planar-strain conditions during testing.

Classes IPC  ?

• G01B 5/30 - Dispositions pour la mesure caractérisées par l'utilisation de techniques mécaniques pour mesurer la déformation dans un solide, p. ex. indicateur de déformation mécanique
• G01B 5/00 - Dispositions pour la mesure caractérisées par l'utilisation de techniques mécaniques
• G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression

Abrégé

The present invention discloses an I-shaped water-retaining dam for an underground reservoir in a coal mine. The I-shaped water-retaining dam is located between coal pillar dams to isolate an underground reservoir from a corresponding coal roadway. The I-shaped water-retaining dam includes an upper flange plate, a web plate, and a lower flange plate from top to bottom, where a vertical face of a dam body is of an I shape; the upper flange plate extends into a roadway roof; two ends of the web plate are embedded into the coal pillar dams; and the lower flange plate extends into a floor. The I-shaped water-retaining dam is located in an underground coal roadway, and bears complex surrounding rock stress. The present invention effectively overcomes water seepage of a weak part at an upper part of a conventional I-shaped water-retaining dam.

Classes IPC  ?

• E21F 17/103 - Barrages, p. ex. pour ventilation
• E21F 17/16 - Modification des passages ou chambres des mines pour le stockage, spécialement de liquides ou de gaz

Abrégé

A system for transparent display and quantitative characterization of an internal stress field of a complicated structure, comprising: a plane strain test model (101), two plane strain baffles (102), a dual-axis synchronous plane loading test machine (103), a controller (104), and a processor (105). A complicated structure is embedded in the plane strain test model (101); the two plane strain baffles (102) are used for fixing the plane strain test model (101) and are clamped in the dual-axis synchronous plane loading test machine (103); the controller (104) controls the dual-axis synchronous plane loading test machine (103) to work, applies an end pressure to the plane strain test model (101), and separately obtains isoclinic line and isochromatic line fringe patterns of the plane strain test model (101) by combining a phase-shift method; the processor (105) obtains a full field main stress difference and a shear stress distribution on the basis of the fringe patterns, and obtains a full field stress distribution of the plane strain test model (101) by using a stress separation means. A stress field distribution rule of a complicated structure in a plane strain condition can be quantitatively characterized in an accurate, quick, economical, and intuitive manner.

Classes IPC  ?

• G01M 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
• G01N 15/00 - Recherche de caractéristiques de particulesRecherche de la perméabilité, du volume des pores ou de l'aire superficielle effective de matériaux poreux

Abrégé

A porous structure three-dimensional (3D) model (101) and a forming method thereof, and a rock porous structure fluid displacement stimulation testing system and transparent testing method, comprising: obtaining a structure image comprising inner porous information of a natural rock by means of a computed tomography technology or an imaging technology; then extracting porous structure information in the structure image by means of an image processing method, and reconstructing a corresponding digital structure model; and performing 3D printing to obtain a transparent and visualized porous structure 3D model (101) according to the digital structure model. The visualization of a rock inner porous structure (1011a) is implemented, so that a flowing phenomenon of a fluid can be observed when displacement seepage occurs in a rock body in an experimental process; a seepage image can be conveniently and rapidly captured outside the model by means of a camera (1051); furthermore, accurate stimulation under different testing conditions is implemented by accurately controlling the temperature, flowing speed, and pressure of components in the testing process, so as to visually display the whole process of immiscible phase displacement seepage in a complex porous structure of the natural rock, and to quantitatively analyze the distribution law of immiscible phase displacement seepage field and velocity field.

Classes IPC  ?

• G01N 1/28 - Préparation d'échantillons pour l'analyse
• G01N 15/08 - Recherche de la perméabilité, du volume des pores ou de l'aire superficielle des matériaux poreux

Abrégé

A transparent constraint apparatus for the normal deformation of a planar model, comprising rigid transparent retainer plates (2), a planar model (4), and magnetic force components (1). The magnetic force components are provided at edge positions of the rigid transparent retainer plates; the normal direction of the planar model is parallel to the normal direction of the two rigid transparent retainer plates, and said two retainer plates are symmetrically arranged relative to the plane of symmetry of the planar model; the magnetic force components are symmetrically arranged relative to the plane of symmetry of the planar model, mutually symmetrical magnetic force components producing mutually attractive magnetic force. The transparent constraint apparatus solves the problem of constraining the normal deformation of a planar model under planar-strain conditions during testing, while also solving problems such as the parallel positioning, the arrangement, and the cooperation of the rigid transparent retainer plates and the planar model during testing. At the same time, the invention reduces the problem in technical solutions of the prior art wherein additional stress on planar models is caused by the tightening of bolts.

Classes IPC  ?

• G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression

Abrégé

A method for measuring the dynamic stress field evolution law of a complex heterogeneous structure, comprising: preparing a transparent photosensitive resin model of a complex heterogeneous structure by means of three-dimensional (3D) printing technology to serve as a test piece (S101); placing the test piece in a light path of a circularly polarized light dark field, performing continuous stress loading on the test piece, and recording images (S102); acquiring a plurality of continuously changing full-field stress fringe grayscale images according to videos generated by the image recording (S103); then acquiring grayscale value change sequences of pixel points at each position in the images (S104); and finally, calculating full-field fringe orders under continuous loading conditions according to the relation between the grayscale values and the fringe orders so as to calculate full-field stress values under the continuous loading conditions (S105). Thus, it is possible to extract and quantify the global dynamic stress field evolution law of a complex heterogeneous structure subjected to high exterior load under fixed light field conditions.

Classes IPC  ?

• G06T 7/00 - Analyse d'image
• G01N 3/06 - Adaptations particulières des moyens d'indication ou d'enregistrement
• B33Y 50/00 - Acquisition ou traitement de données pour la fabrication additive
• B29C 64/386 - Acquisition ou traitement de données pour la fabrication additive
• B33Y 70/00 - Matériaux spécialement adaptés à la fabrication additive
• B33Y 80/00 - Produits obtenus par fabrication additive
• B29L 31/40 - Échantillons de test

Abrégé

2 fracturing process.

Classes IPC  ?

• G01N 3/00 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique
• G01N 3/12 - Test de pression
• G06T 17/05 - Modèles géographiques
• E21B 43/16 - Procédés de récupération assistée pour l'extraction d'hydrocarbures
• E21B 49/00 - Test pour déterminer la nature des parois des trous de forageEssais de couchesProcédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits
• B33Y 80/00 - Produits obtenus par fabrication additive
• B33Y 10/00 - Procédés de fabrication additive

Abrégé

Disclosed is a method for laying out a minefield suitable for fluidized mining of coal resources. A main shaft (1) and a ventilation shaft (2) are respectively provided in a minefield region, with the bottom of the main shaft being located in a shallow coal seam zone, and the bottom of the ventilating shaft being located in a deep coal seam zone; horizontal main tunnels (3) are respectively arranged along two boundaries of the minefield in the direction in which a coal seam runs, and inclined main tunnels (4) are respectively provided along two boundaries of the minefield in the direction of inclination of the coal seam; and connecting tunnels (5) in communication with the horizontal main tunnels (3) are laid inside the minefield. When mining coal, an unmanned automatic coal mining machine (14) transforms coal resources into a fluidized energy product and/or electric energy, and the fluidized energy product and/or the electric energy are/is delivered to the ground through an energy delivery pipeline (8) laid in the various tunnels and the main shaft. By means of the minefield layout, the number of mine tunnels for the elevation and transport of coal, drainage, ventilation and supplying power is reduced, so that the construction and maintenance costs of the mine tunnels are reduced. Furthermore, there are nearly no residual coal pillars left in the minefield, so that the mining yield is high.

Classes IPC  ?

• E21C 41/16 - Procédés d'exploitation minière souterraineTracés à cet effet

Abrégé

Disclosed are an automatic coal mining machine and a fluidized coal mining method. A first mining chamber (1) cuts a coal seam to obtain raw coal, and conveys same to a first coal-cleaning chamber (2) to separate coal blocks therein from gangue; the coal blocks obtained by sorting are then transported to a first fluidization reaction chamber (3); and the first fluidization reaction chamber transforms the form of energy of the coal blocks to obtain liquid, gas or electric energy, and transports same to a first energy storage chamber (4) for storage. The mining and transformation of coal are both performed in a coal mine, thus improving the degree of utilization of the coal and preventing waste generated during mining and transformation from polluting the ground environment.

Classes IPC  ?

• E21C 25/00 - Machines à inciser, c.-à-d. pratiquant des saignées approximativement parallèles ou perpendiculaires à la veine
• B03B 5/18 - Bacs à tamis mobile

Abrégé

A device for stress-freezing experiments during fracturing process according to the present application, in which heating and cooling treatment on a specimen under corresponding temperature control according to a preset temperature gradient and a photosensitive curve is performed by a temperature control system, to realize stress-freezing of the specimen; a pressure is applied to a specimen by a true triaxial servo loading system; and corresponding fracturing experiments are performed to the specimen by a fracturing liquid pumping system having an output end arranged in a thermo-controlled oven.

Classes IPC  ?

• G01N 3/12 - Test de pression
• G01N 3/18 - Exécution de tests à des températures élevées ou basses

Abrégé

A method for measuring the dynamic stress field evolution law of a complex heterogeneous structure, comprising: preparing a transparent photosensitive resin model of a complex heterogeneous structure by means of three-dimensional (3D) printing technology to serve as a test piece (S101); placing the test piece in a light path of a circularly polarized light dark field, performing continuous stress loading on the test piece, and recording images (S102); acquiring a plurality of continuously changing full-field stress fringe grayscale images according to videos generated by the image recording (S103); then acquiring grayscale value change sequences of pixel points at each position in the images (S104); and finally, calculating full-field fringe orders under continuous loading conditions according to the relation between the grayscale values and the fringe orders so as to calculate full-field stress values under the continuous loading conditions (S105). Thus, it is possible to extract and quantify the global dynamic stress field evolution law of a complex heterogeneous structure subjected to high exterior load under fixed light field conditions.

Classes IPC  ?

• G01N 19/00 - Recherche sur les matériaux par des procédés mécaniques

Abrégé

A method for measuring stress field variations during a CO2 fracturing process. The method employs CT scan, digital reconstruction, 3D printing, CO2 fracturing experiments, stress freezing and photoelasticity measuring techniques, not only allows the transparent display of the spatial distribution and the form of extension of internal cracks of a three-dimensional physical model when fractured, but also acquires a three-dimensional stress phase diagram of the interior of the model during a fracture crack extension process, thus implementing the transparent display and quantitative expression of a three-dimensional stress field and an evolutionary rhythm thereof in a solid CO2 fracturing process; and, at the same time, utilizes multiple identical transparent three-dimensional physical models to implement the display and expression, thus ensuring the accuracy and reliability of a measurement result, and solving the problem of low calculation precision and difficulty in ensuring accuracy and reliability found in an existing numerical simulation method.

Classes IPC  ?

• G01N 3/12 - Test de pression

Abrégé

An industrial CT scanning test system. The test system includes a test base, a multi-axis motion swivel table supported on the test base, a ray generator, an image acquisition device, and a fluid pressure loading device, and further includes a control device. The fluid pressure loading device includes at least one loading cylinder, and in case of performing a scanning experiment, the at least one loading cylinder is placed on a sample stage of the multi-axis motion swivel table together with a sample, and real-time loading of loads in different directions on the sample is performed according to test requirements.

Classes IPC  ?

• A61B 6/00 - Appareils ou dispositifs pour le diagnostic par radiationsAppareils ou dispositifs pour le diagnostic par radiations combinés avec un équipement de thérapie par radiations
• G01N 23/00 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou
• G01N 23/04 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux
• G06T 11/00 - Génération d'images bidimensionnelles [2D]

Abrégé

A fluid pressure loading device applied to an industrial computed tomography scanning test system includes a body, a sample accommodating chamber and at least one fluid medium chamber being provided in the body. Each of the at least one fluid medium chamber is provided therein with a piston, the corresponding fluid medium chamber is separated into two chambers by the piston, one of the two chambers is in communication with an external hydraulic medium via oil lines provided in the body, the other of the two chambers is in communication with the sample accommodating chamber, and one end, facing towards the sample accommodating chamber, of the piston is extendable into the sample accommodating chamber. With the loading device, real-time loading of a test sample can be realized, thus improving a simulation accuracy of the system, and multi-directional loading of the sample can be realized.

Classes IPC  ?

• A61B 6/00 - Appareils ou dispositifs pour le diagnostic par radiationsAppareils ou dispositifs pour le diagnostic par radiations combinés avec un équipement de thérapie par radiations
• G01N 23/04 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux

Abrégé

An industrial CT scanning test system. The test system comprises a test base (9), and a multi-axial movement turntable (2), a ray generation apparatus (1), an image collection apparatus (3), and a fluid pressure loading apparatus (4), which are supported on the test base (9). The test system further comprises a control apparatus (6). The industrial CT scanning test system adopts the fluid pressure loading apparatus (4), reduces the dead weight of the loading apparatus as much as possible, and can provide a larger loading force, thereby meeting requirements of most of rock material deformation and destruction tests. Moreover, a loading cylinder of the loading apparatus loads a sample in real time on a sampling table of the multi-axial movement turntable (2), a loading force applied on a rock sample by the loading cylinder can be regulated in real time according to test demands, and the test efficiency is improved. Furthermore, forces can be applied to a plurality of directions of the sample by setting the quantity of the loading cylinders.

Classes IPC  ?

• G01N 23/04 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux

Abrégé

An industrial CT scanning test system and a fluid pressure loading apparatus (4). The fluid pressure loading apparatus (4) comprises a body (41). A sample accommodating chamber (4a) and at least one fluid medium chamber (4b, 4d) are provided inside the body (41). Each fluid medium chamber (4b, 4d) is internally provided with a piston (42, 47). Each piston (42, 47) partitions the corresponding fluid medium chamber (4b, 4d) into two chambers, one of the chambers being communicated with an external hydraulic medium by means of an oil way disposed inside the body (41), the other chamber being communicated with the sample accommodating chamber (4a). One end, facing the sample accommodating chamber (4a), of each piston (42, 47) can extend into the sample accommodating chamber (4a). The pressure of a fluid medium flowing into the fluid medium chamber (4b, 4d) pushes the piston (42, 47) to act, such that the piston (42, 47) abuts against a sample and applies a certain force to the sample. The loading apparatus (4) achieves force loading by means of fluid pressure, is convenient to place on a sample scanning table due to small size, and can regulate a force applied to a sample in real time by controlling the flow of a fluid medium flowing into the fluid medium chamber (4b, 4d), thereby further improving the test efficiency.

Classes IPC  ?

• G01N 23/083 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et mesurant l'absorption le rayonnement consistant en rayons X

Abrégé

A composite sintering agent and a method for preparing nano crystalline ceramic at low temperature using the same are provided. The composite sintering agent comprises a sintering aid and a grain growth inhibitor. The sintering aid comprises oxides of one or more metals selected from Li, Na, Ga, In, Mn, Fe, Co, Ni, Cu, Zn and Bi. The grain growth inhibitor comprises oxides of one or more metals selected from Mg, Ca, Al, Zr and Y. The nano crystalline ceramic can be obtained by adding the composite sintering agent into ceramic material and the sintering temperature is not higher than 900℃.

Classes IPC  ?

• C04B 35/63 - Préparation ou traitement des poudres individuellement ou par fournées utilisant des additifs spécialement adaptés à la formation des produits
• C04B 35/50 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base de composés de terres rares
• C04B 35/48 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base d'oxydes à base d'oxydes de zirconium ou d'hafnium ou de zirconates ou d'hafnates
• C04B 35/10 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base d'oxydes à base d'oxyde d'aluminium
• C04B 35/64 - Procédés de cuisson ou de frittage