Abrégé

Disclosed in the present invention is a method for draining water of coal mine goafs by crossing an adjacent goaf. An applicable environment of the method comprises a first goaf, a second goaf and a third goaf which are successively arranged on a side of a tunnel, directional drilling mechanisms being provided between the tunnel and the second goaf and between the tunnel and the third goaf, and the directional drilling mechanisms penetrating through a coal seam floor located at the bottom of the goafs so as to communicate with the second goaf and the third goaf. Directional holes comprise a first directional hole and a second directional hole, the first directional hole leading to the second goaf, the second directional hole leading to the third goaf, and a sleeve structure being mounted in the first directional hole. The present invention uses directional drilling, and the directional holes penetrate into and out of the coal seam floor, so as to cross the adjacent goaf, thus increasing the range of explored and drained goafs and the hole length so as to drain in advance water accumulated in the remaining goafs that cannot be drained in a traditional coal mine drilling mode. The present invention can be popularized and used in the field of coal mines to solve the present threat of goaf water to coal mine production.

Classes IPC  ?

• E21F 16/00 - Drainage
• E21B 7/04 - Forage dirigé

Abrégé

An intelligent gas mining method for a closed working face of a high-gas coal seam (4). A high-gas coal-mining working face (21) and a goaf (20) are fully closed to form a sealed space (23), such that a ventilation system and a gas drainage borehole are eliminated; and no outside air enters the sealed space and oxygen therein is reduced, by means of extraction, to be close to zero, such that the coal-mining working face (21) is in an oxygen-isolated state during a subsequent coal-mining process. Therefore, the risks of spontaneous combustion of coal and explosion of gas and coal dust are fundamentally eliminated, the mining takeover speed is greatly increased, and the construction cost of a mine is reduced. In addition, during subsequent coal mining in the sealed space (23), desorbed gas is directly discharged to the coal-mining working face (21) and the sealed space (23), and in this case, the gas is drained by means of a gas drainage pump station (26), such that the gas utilization rate is greatly improved, and the gas drainage of the whole high-gas coal seam (4) is finally realized; moreover, coal mining can be performed during drainage, such that the gas drainage efficiency is ensured, and the coal-mining amount is also guaranteed.

Classes IPC  ?

• E21F 7/00 - Procédés ou dispositifs pour enlever les gaz, avec ou sans utilisation ultérieure de ceux-ci à une fin quelconque
• E21F 17/103 - Barrages, p. ex. pour ventilation
• E21F 17/12 - Portes de barrage
• E21F 17/18 - Adaptations particulières des dispositifs de signalisation ou d'alarme

Abrégé

44222444 extraction efficiency of the coal seam sections of the stacked coal seams.

Classes IPC  ?

• E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
• 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 43/16 - Procédés de récupération assistée pour l'extraction d'hydrocarbures
• E21B 43/14 - Extraction d'un puits à horizons multiples

Abrégé

A method for dewatering a coal mine goaf by crossing a neighboring goaf is applicable to a scenario including a first goaf, a second goaf, and a third goaf located sequentially at one side of a roadway. A directional hole mechanism is provided between the roadway and the second goaf as well as between the roadway and the third goaf. The directional hole mechanism passes through a coal seam floor at a bottom of the goaf and is communicated to the second goaf and the third goaf. The directional hole includes a first directional hole and a second directional hole. The first directional hole is communicated to the second goaf, the second directional hole is communicated to the third goaf, and the first directional hole is provided with a casing structure.

Classes IPC  ?

• E21F 16/00 - Drainage
• E21B 7/04 - Forage dirigé
• E21B 33/05 - Têtes de cimentation, p. ex. comportant des aménagements pour introduire les bouchons de cimentation

Abrégé

A water resource investigation method and system for a mining subsidence waterlogged area. The method comprises: acquiring a satellite remote sensing image of a subsidence waterlogged area, acquiring multispectral remote sensing data according to the satellite remote sensing image, extracting a subsidence water area range of the multispectral remote sensing data by using a normalized difference water index (NDWI), performing interpretation and extraction to obtain a subsidence area NDWI distribution map, and calculating a research area water body area (S1); laying a GNSS control network, and performing GNSS static measurement to obtain a coordinate conversion parameter of preset coordinates and a GNSS elevation fitting parameter in a research area (S2); designing an unmanned ship observation route, and according to the coordinate conversion parameter and the GNSS elevation fitting parameter, using an unmanned ship measurement tool to perform surveying to obtain underwater terrain and water depth data of a subsidence water area (S3); and constructing a subsidence water area underwater terrain model according to the underwater terrain and the water depth data of the subsidence water area, so as to calculate the amount of water resources in the subsidence waterlogged area according to the research area water body area (S4). The water resource investigation method and system for the mining subsidence waterlogged area solve the technical problems of low measurement precision, low measurement operation efficiency and high measurement cost.

Classes IPC  ?

• G01C 13/00 - Géodésie spécialement adaptée à l'eau libre, p. ex. à la mer, aux lacs, aux rivières ou aux canaux
• G06V 20/13 - Images satellite
• G06V 10/40 - Extraction de caractéristiques d’images ou de vidéos
• G06V 10/26 - Segmentation de formes dans le champ d’imageDécoupage ou fusion d’éléments d’image visant à établir la région de motif, p. ex. techniques de regroupementDétection d’occlusion
• G01C 11/00 - Photogrammétrie ou vidéogrammétrie, p. ex. stéréogrammétrieLevers photographiques
• G01B 7/26 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer une profondeur

Abrégé

A pile arrangement method for a fixed monitoring pile for use in a high-groundwater-level mining area. The method comprises: step S1, prefabricating a pile foundation body (1), wherein the pile foundation body (1) has a columnar structure, and a plurality of extension connectors are reserved on an outer side and the bottom of the pile foundation body (1); and step S2, performing earthwork operation at the position of a predetermined monitoring point to form a foundation pit, combining the pile foundation body (1) and extension bodies (2) to form a fixed monitoring pile, hoisting the fixed monitoring pile into the foundation pit, so that a bottom extension body (2'') and side extension bodies (2') are inserted into the foundation pit, and performing backfilling and compaction. The pile arrangement method can increase the affinity between the fixed monitoring pile and an unconsolidated layer and reinforce the fixed monitoring pile, such that the fixed monitoring pile is prevented from loosening, thereby improving the measurement accuracy.

Classes IPC  ?

• G01C 5/00 - Mesure des hauteursMesure des distances transversales par rapport à la ligne de viséeNivellement entre des points séparésNiveaux à lunette
• G01C 15/02 - Moyens pour marquer les points de mesure
• B28B 23/02 - Aménagements spécialement adaptés à la fabrication d'objets façonnés avec des éléments complètement ou partiellement enrobés dans le matériau de moulage dans lesquels les éléments enrobés sont des renforcements

Abrégé

Provided are an identification method and system for a subsidence water area in a mining region. The method comprises: collecting subsidence data in a coal mining subsidence region to determine coal mining subsidence region information; according to the coal mining subsidence region information, installing artificial corner reflectors in the coal mining subsidence region according to a preset number and reflector installation positions; acquiring a radar satellite image, DEM data, and satellite orbit data, and using the same as PS-InSAR satellite image data; using the PS-InSAR technology to perform interpretation processing on the satellite image data to obtain a subsidence amount and a subsidence range; generating a connection graph; interfering with a workflow; using a preset PS inversion model to perform inversion, and obtaining a PS inversion deformation result; and performing geographic coding to obtain a subsidence water accumulation region and the area thereof, and calculating the subsidence water accumulation area. The method solves the technical problems that the safety is low during manual operation, it is restricted by an actual application environment when an unmanned observation apparatus, mass-stage deformation cannot be monitored, and the measurement precision is low.

Classes IPC  ?

• G01S 13/90 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques pour la cartographie ou la représentation utilisant des techniques d'antenne synthétique

Abrégé

The present invention provides a method and system for rapid updating of a topographic map of a mining area. The method comprises: determining a surface deformation active area in a mining area and acquiring an operation range of a fixed-wing aircraft platform using the interferometric synthetic aperture radar (InSAR) technology; utilizing the fixed-wing aircraft platform to acquire and update a topographic map of the surface active area of the mining area according to the operation range of the fixed-wing aircraft platform; processing remote satellite sensing optical images to give characteristic points of a large-area topographic map of the mining area, acquiring a corresponding relationship between a topographic map for update and mark points of the processed high-resolution optical image, and updating the topographic map for update to give an updated large-area topographic map of the mining area; and integrating the topographic map of the surface active area of the mining area acquired by the fixed-wing aircraft platform with the large-area topographic map of the mining area to give a topographic map with a proper precision. The present invention solves the technical problem of rapid updating of a topographic map of a mining area.

Classes IPC  ?

• G06V 20/17 - Scènes terrestres transmises par des avions ou des drones

Abrégé

A method for constructing a fixed monitoring pile for a mining area with a high phreatic water level includes: S1: prefabricating a pile foundation body, where the pile foundation body has a columnar structure, and a plurality of extension connection ports are provided at an outer side and a bottom of the pile foundation body; and S2: digging a foundation pit at a designated monitoring point; combining the pile foundation body with an extension body to form a fixed monitoring pile; placing the fixed monitoring pile into the foundation pit, such that a bottom extension body and a side extension body are inserted into the pit foundation; and backfilling and compacting. The method increases the affinity between the fixed monitoring pile and a loose layer and strengthens the fixed monitoring pile to prevent it from loosening, thereby improving measurement accuracy.

Classes IPC  ?

• E02D 5/30 - Pieux préfabriqués en béton ou béton armé ou en acier et béton
• E02D 5/52 - Pieux constitués d'éléments séparables, p. ex. de tubes télescopiques
• G01C 5/00 - Mesure des hauteursMesure des distances transversales par rapport à la ligne de viséeNivellement entre des points séparésNiveaux à lunette
• E02D 17/02 - Trous de fondation

Abrégé

A level for surveying and mapping of a mining subsidence area in a coal-mining area, the level comprising a bottom plate (1), a leveling mechanism (2), a lifting mechanism (3) and a level body (4), wherein the leveling mechanism (2) is mounted on the bottom plate (1), the lifting mechanism (3) is mounted on the leveling mechanism (2), and the level body (4) is mounted on the lifting mechanism (3). Further provided is a surveying and mapping method using the level for surveying and mapping. By means of the bottom plate (1), the level is installed on a site to be inspected, the levelness of the level body (4) directly being adjusted by means of the leveling mechanism (2) arranged below the level body (4), and the height of the level body (4) directly being adjusted by means of the lifting mechanism (3), such that the operation process of using the level for surveying and mapping is simplified, thereby improving the overall surveying and mapping efficiency.

Classes IPC  ?

• G01C 5/00 - Mesure des hauteursMesure des distances transversales par rapport à la ligne de viséeNivellement entre des points séparésNiveaux à lunette

Abrégé

22222222222 is stored.

Classes IPC  ?

• E21F 17/16 - Modification des passages ou chambres des mines pour le stockage, spécialement de liquides ou de gaz

Abrégé

222222 gas may be achieved.

Classes IPC  ?

• E21F 17/16 - Modification des passages ou chambres des mines pour le stockage, spécialement de liquides ou de gaz

Abrégé

1221223212233, so as to measure the gas content. The present invention solves the technical problems of large gas content measurement error and short measurement distance.

Classes IPC  ?

• G01N 1/08 - Dispositifs pour prélever des échantillons à l'état solide, p. ex. par coupe à l'outil impliquant un outil d'extraction, p. ex. mèche cylindrique creuse ou trépan
• G01N 1/28 - Préparation d'échantillons pour l'analyse
• G01N 7/14 - Analyse des matériaux en mesurant la pression ou le volume d'un gaz ou d'une vapeur en permettant au matériau d'émettre un gaz ou une vapeur, p. ex. la vapeur d'eau, et en mesurant une différence de pression ou de volume
• G01N 33/22 - CombustiblesExplosifs