Abrégé

Disclosed in the present invention is a method for increasing a roof-contacted filling rate of an underground mine end sand discharging stope. The method comprises: arranging a stope (1) every 40-80 m in the direction of a mine body, and reserving pillars (2) between two adjacent stopes (1); arranging inclined filling shafts (3) in the pillars (2), hanging primary filling pipes (4) on roadway roofs of the inclined filling shaft (3), digging filling connecting roadways (5) from portions of the inclined filling shafts (3) close to the top areas of the stopes (1) to the stopes (1), and connecting secondary filling pipes (6) into the stopes (1); drilling a blast hole towards the stope in each partition in a rock drilling roadway, forming a stepped sand discharging tank in the top of the stope (1) through a method of deepening a blast hole area by area, performing backward blasting on an end sand discharging point in the rock drilling roadway, dropping ore into the rock drilling roadway, and transporting the ore to an ore pass for unloading through a scraper; and filling a goaf in stages after stope stoping is completed. The roof-contacted filling rate can reach 100%, ground pressure activities are effectively controlled, and the safety of the stoping process is ensured.

Classes IPC  ?

• E21C 41/16 - Procédés d'exploitation minière souterraineTracés à cet effet
• E21F 15/00 - Procédés ou dispositifs pour mettre en place les matériaux de remblayage dans les travaux du fond

Abrégé

Disclosed in the present invention is a cartridge loading method for a horizontal hole in a broken rock of an underground mine. The method comprises: sleeving a front end of a hole protecting sleeve (3) with a pipe cap (4), and inserting the hole protecting sleeve (3) into a blast hole (2) with an opening facing downwards; inserting a NONEL detonator (6) into cartridges (5); loading the cartridges (5) into the blast hole (2) respectively through a blast rod (8); enabling the blast rod (8) to abut against the cartridges (5) after the cartridges (5) are loaded, and drawing out the hole protecting sleeve (3) slowly in this case; blocking the blast hole (2) with stemming (7) after the hole protecting sleeve (3) is completely drawn out; and performing detonation according to the design solution after the cartridges are loaded into the blast hole (2). The present invention maintains the integrity of the blast hole in the cartridge loading process, the hole is prevented from collapsing during the cartridge loading process, the cartridge loading length and depth in the hole are ensured to satisfy the design requirements, the blast circulation footage is increased while the utilization rate of the blast hole is also increased, the unit consumption of civil explosives is reduced, the production cost is reduced, and the mine production safety is ensured.

Classes IPC  ?

• F42D 1/08 - Procédés de bourrageProcédés pour charger des trous de mine en explosifsAppareils à cet effet
• F42D 3/04 - Applications particulières de techniques de sautage pour faire sauter des rochers

Abrégé

Disclosed in the present invention is a method for large goaf caving-in treatment and goaf elimination in a underground mine, comprising: dividing goaf surrounding rock (3) around a goaf (1) into 2-6 operation areas or explosion areas; arranging 3-6 long-hole drilling chambers (9) in the goaf surrounding rock (3) in each operation area or explosion area, the long-hole drilling chambers (9) of respective layers communicating by using chamber connection wells (10); arranging between a previous project and the long-hole drilling chambers (9) a shaft sinking and drifting project--connection entries (6), a connection inclined shaft (7) or a connection raise; and placing caving-in horizontal long holes (12) in the long-hole drilling chambers (9) at the middle and lower layers, and arranging horizontal and upward fan-shaped cutting weakening long holes (13) in the long-hole drilling chambers (9) at the upper layer. The present invention reduces a downhole project quantity and an explosive quantity of long hole blasting and reduces the harm caused by air shock waves brought by large-area caving in the goaf, thereby lowering a construction cost and eliminating potential safety hazards in the large goaf.

Classes IPC  ?

• E21F 15/00 - Procédés ou dispositifs pour mettre en place les matériaux de remblayage dans les travaux du fond
• F42D 1/00 - Appareils ou procédés de sautage, p. ex. pour le chargement en explosifs ou de bourrage

Abrégé

Disclosed in the present invention is a method for treating an underground water disaster of a weak-permeability soil layer slope. A three-dimensional seepage drainage system, a vacuum drainage aiding system, a self-flowing direct drainage system and a siphon drainage system are provided. The three-dimensional seepage drainage system comprises a horizontal seepage drainage shock tube (8), a vertical seepage drainage shock tube (17) and a water collection well (5). The vacuum drainage aiding system is composed of a vacuum pump (11) and a vacuum suction pipe (10). The direct drainage system comprises a water guide hole and a direct drainage pipe (21). The siphon drainage system comprises a deep well pump (12), a siphon pipe (15) and a siphon water supplementing pipe (13), wherein the deep well pump (12) is mounted at the bottom of the water collection well (5), a water input end of the siphon pipe (15) extends to a lower portion of the water collection well (5) along an inner wall of the water collection well (5), and the siphon pipe or the direct drainage pipe can automatically drain the water in the water collection well. By means of the present invention, smooth and centralized drainage of underground water of the weak-permeability soil layer slope can be effectively achieved, thereby preventing the saturation and erosion damage of the slope surface soil layer, and improving the lasting stability of the slope.

Classes IPC  ?

• E02D 17/20 - Stabilisation de talus ou de rampes

Abrégé

11ss(x, y) into a polar coordinate data format, and performing linear interpolation, difference operation, Fourier series expansion fitting and other processing to obtain a digital interface model f(x, y) capable of reflecting real surface roughness of the block stone; and finally solving interface roughness JRC of the block stone. The method can efficiently and repeatedly digitize an irregular block stone contour, has the characteristics such as repeatability, high efficiency and convenience and the advantage of high scientific credibility, and can be widely applied to geotechnical engineering.

Classes IPC  ?

• G06T 5/00 - Amélioration ou restauration d'image

Abrégé

A combined mining method for an underground mine, comprising: constructing a hanging-wall strike drift (10) on an ore body hanging wall, constructing a foot-wall strike drift (1) on an ore body foot wall, constructing a hanging-wall cross drift (11) on the ore body hanging wall, constructing a foot-wall cross drift (2) on the ore body foot wall, constructing a ventilation man raise (12) and a sublevel drilling tunnel (13) in a hanging-wall ore body, constructing a medium-length hole (17) in the hanging-wall ore body, and transporting blasted ores out of a stope by means of a sublevel open-stoping method room ore outlet route (16) of a sublevel open-stoping method room (A); and after the sublevel open-stoping method room is stoped and filled, mining a stage open-stoping method room (C) located on a foot-wall ore body, downwards constructing a downward deep hole (6) in a drilling chamber (4), and transporting the blasted ores out of the stope by means of a stage open-stoping method room ore outlet route (5). The method has the advantages of being good in safety, easy to construct, high in resource recovery rate and the like, and is particularly suitable for popularization and application in underground mines of thick and large steeply inclined ore bodies where surrounding rocks are very broken.

Classes IPC  ?

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

Abrégé

2323233 recovery rate of 67.28% can be obtained. The method has the advantages of a large system processing capacity, a large coarse grain tailing discarding yield, a high adaptability, being capable of saving on energy and environmentally friendly.

Classes IPC  ?

• B03B 9/00 - Disposition générale d'un atelier de séparation, p. ex. schéma opératoire

Abrégé

A method for extracting Fe, Zn and Pb from electric furnace dedusting ash and the high value utilization of same. Bulk dangerous waste electric furnace dedusting ash is used as a raw material, oxalic acid is used as a leaching agent, and a complex reaction is performed under the reaction conditions of a low temperature and normal pressure, so as to achieve the purpose of stepwise separation of iron and zinc resources. Under the conditions that the concentration of oxalic acid is 5-30%, the liquid-solid ratio is 10:1-50:1, the reaction temperature is 30-90℃ and the reaction time is 0.5-4 h, the leaching rate of Fe from the electric furnace dedusting ash can reach 92% or more, the content of Zn (in terms of ZnO) in leaching residues can reach 36% or more, and the purity of the finally obtained ferrous oxalate can reach 97% or more. The method has a simple process, low energy consumption and a low reaction cost; and the obtained ferrous oxalate and zinc-rich residues have smaller influence on the environment and good market application prospects, while having higher additional value.

Classes IPC  ?

• B09B 3/00 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif
• B09B 5/00 - Opérations non couvertes par une seule autre sous-classe ou par un seul autre groupe de la présente sous-classe
• C22B 3/16 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions organiques
• C22B 34/12 - Obtention du titane

Abrégé

A method for the flotation of complex, difficult-to-process copper silver sulfide ore: crushing and grinding copper silver sulfide raw ore to produce ore pulp; adding a predetermined amount of a collecting agent MT-23 to perform rough selection of copper silver sulfide ore, obtaining copper silver sulfide mixed rough ore concentrate and rough selection tailings, and adding the rough selection tailings to the collecting agent MT-23 for mixed scavenging of the copper silver sulfide minerals; performing fine selection on the copper silver sulfide mixed rough ore concentrate obtained from the rough selection of the copper silver sulfide minerals, to obtain a final copper silver concentrate; the collecting agent MT-23 is a mixture of thiazidil ester, ethionine ester and polyethylene glycol alkyl ether. While ensuring the quality of the copper silver concentrate product, the recovery rate of copper and silver is significantly improved, and the process flow is simple, stable, reliable and highly applicable; the agent system is simple, with small doses of agent and convenient dosing; and problems of beneficiation in the efficient utilization of complex, difficult-to-process copper-silver sulfide ores are resolved.

Classes IPC  ?

• B03D 1/012 - Composés organiques contenant du soufre

Abrégé

223x23233 recovery rate that is greater than or equal to 85.0%. Two chromium-containing hazardous waste resources, i.e. the chromium-containing sludge and the chromium-containing waste residue are combined, and the chromium in the two resources is enriched at the same time, so that an obtained chromium-containing enriched phase has a high chromium grade, and by utilizing subsequent separation, has the characteristics of high efficiency, low pollution and a wide application range, which is suitable for application in the technical field of chromium enrichment and separation in chromium-containing resources.

Classes IPC  ?

• 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 7/04 - Mise en œuvre des scories
• C22B 34/32 - Obtention du chrome
• C22B 1/02 - Procédés de grillage

Abrégé

A full-quantitative overall utilization method for step-by-step recovery of iron, sodium and tailings from Bayer red mud, comprising: grinding a red mud raw material, and adding sulfuric acid for acid leaching to dissolve Fe and Na; adding excessive ammonia water into a leachate to obtain a Fe(OH)3 solid, and calcining the Fe(OH)3 solid to obtain a Fe2O3 product; adding NaOH into a solution with the Fe(OH)3 solid separated through solid-liquid separation to perform a chemical reaction, and adopting an evaporative crystallization method for the residual solution obtained after the chemical reaction, thereby obtaining sodium salt Na2SO4; and carrying out filter pressing on leached tailings, adding auxiliary materials into a filter cake, and carrying out wet grinding, uniform mixing, compression molding and sintering to obtain architectural ceramic products with different purposes. According to the method, iron and sodium resources in the red mud are recycled, the leached tailings are utilized by 100%, the full-quantitative overall utilization of the red mud is realized, the treatment process is simple. The method has the advantages of low cost and environmental friendliness and can be popularized and applied in industrial production.

Classes IPC  ?

• C01G 49/06 - Oxyde ferrique [Fe2O3]
• C01D 5/16 - Purification
• C04B 33/16 - Matières "dégraissantes", p. ex. quartz, chamottes
• C04B 33/132 - DéchetsRésidus
• C22B 26/10 - Obtention des métaux alcalins

Abrégé

An underground tunneling blasting advanced protection wall dust suppression method, involving: an energy-gathering tube (2) being mounted in an advanced protection wall hole (1); emulsion explosives (3) and dust-settling bags (4) being uniformly arranged at intervals at the bottom of the energy-gathering tube (2) in an axis direction; a nonel tube detonator (5) and a water-resistant detonating cord (6) passing through and being inserted into the emulsion explosives (3) at the bottom inside the energy-gathering tube (2), so as to form an "explosive (3)-dust-settling bag (4)-explosive (3)" spaced explosive charging arrangement structure in the axis direction; and the advanced protection wall hole (1), a cutting hole, and an auxiliary hole being sequentially detonated. By means of the method, roadway blasting formation is effectively controlled, damage to surrounding rock mass of a roadway due to blasting is reduced, and the amount of blasting dust that is generated is reduced.

Classes IPC  ?

• F42D 1/00 - Appareils ou procédés de sautage, p. ex. pour le chargement en explosifs ou de bourrage
• F42D 1/08 - Procédés de bourrageProcédés pour charger des trous de mine en explosifsAppareils à cet effet
• F42D 1/02 - Agencement des cartouches de sautage de manière à former un ensemble
• F42D 5/00 - Dispositions de sécurité
• F42D 3/04 - Applications particulières de techniques de sautage pour faire sauter des rochers
• B01D 47/06 - Nettoyage par pulvérisation

Abrégé

A method for recovering stored ore when transitioning from a caving method to a filling method. When transitioning from a caving mining method to a filling mining method, an ore outgoing road (4), an original subsection ore drift transportation roadway (10), a stage ore drift transportation roadway (12) and other projects of the original caving method are used to recover ore resources stored in a previous subsection. Inter-panel pillars (13) are arranged along the strike of an ore body. Mining is carried out step by step at panel intervals, and is carried out from an upper panel to a lower panel in the panels. Recovery is carried out step by step from bottom to top in the vertical direction, and recovery is carried out simultaneously for a plurality of ore loading routes (2) in a stope. After two to three layers are recovered in a panel, same are immediately organized and filled as an artificial false roof for deep mining and an ore covering layer (7) in the upper part of an empty region. Once a body to be filled is completely cemented, the upper part of a layer is then recovered. The described method efficiently recovers stored ore resources when transitioning from the caving method to the filling method, improves the safety of the recovery of stored ore, eliminates safety hazards in a mining region, and prolongs the service lifespan of the mine.

Classes IPC  ?

• E21C 41/16 - Procédés d'exploitation minière souterraineTracés à cet effet
• E21F 15/00 - Procédés ou dispositifs pour mettre en place les matériaux de remblayage dans les travaux du fond

Abrégé

A full-section monitoring method for a poisonous and harmful gas in blasting fume in underground space blasting. A chassis (1) is of a triangular or quadrilateral plane arrangement structure, walking wheels (3) are mounted below the chassis (1), and the walking wheels (3) are controlled by walking drivers (4) and are remotely controlled by an operator in a wireless or wired mode; a support frame (5) is of a square frame-shaped structure, and is vertically mounted at the center of the chassis (1) facing a blasting working surface (17); a blasting fume monitor (10) is mounted in each of protection boxes (9) on movable rods (7); a controller controls the walking drivers (4) to move a special blasting fume monitoring device to a safe distance position which is more than 5 m away from the blasting working surface; and movable rod drivers (6) are remotely controlled such that the movable rods (7) move left and right on the support frame (5). The monitoring method can prevent a blasting fume poisoning suffocation accident in blasting, improve the production operation safety, and reduce the ventilation time and power consumption in underground space blasting at the same time.

Classes IPC  ?

• G01N 33/00 - Recherche ou analyse des matériaux par des méthodes spécifiques non couvertes par les groupes
• G01B 11/02 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la longueur, la largeur ou l'épaisseur
• E21F 17/18 - Adaptations particulières des dispositifs de signalisation ou d'alarme

Abrégé

Disclosed are a gelling agent for curing heavy metal ions in tailings and a use method thereof. The gelling agent comprises the following raw materials in mass percent: 0.25-0.7% of a chelating trapping agent, 0.15-0.3% of a chelating accelerant, 0.2-0.6% of a complexing early strength agent, 1-7% of lime, 0-10% of cement, 8-20% of gypsum, 0-20% of steel slag micro powder, and 50-82% of mineral slag micro powder. The chelating trapping agent, the chelating accelerant and the complexing early strength agent are mixed well first, and then mixed with other components uniformly. The gelling agent prepared in the present invention can be used for not only cementing total tailings by means of hydration to achieve filling mining, but also synergistically curing heavy metal ions in the tailings by means of leaching, chelating, wrapping, chemical adsorption, chemical passivation, ion substitution and the like to maintain the curing stability for a long time. The gelling agent is particularly suitable for cemented filling of total tailings having high heavy metal ion content, and significantly reduces the environmental risk of high content of heavy metal ions in the filling body after tailings filling.

Classes IPC  ?

• C04B 28/14 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates contenant des ciments de sulfate de calcium
• C04B 28/16 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates contenant des ciments de sulfate de calcium contenant de l'anhydrite
• C04B 24/16 - Composés contenant du soufre
• C04B 18/14 - DéchetsRésidus provenant de procédés métallurgiques

Abrégé

Disclosed is a method for consolidating a soft soil foundation by using industrial solid waste as a main raw material. The raw material of a soft soil curing agent comprises the following components in percentages by mass: 35.0-42.0% of carbonated steel slag, 22.0-27.0% of a slag powder, 6.0-10.0% of fly ash, 24.0-35.0% of cement, and 2.0-5.0% of lime, gypsum or a mixture of both in any ratio. When the total mass of soft soil, water and the soft soil curing agent is 100%, the mixing ratio of the soft soil curing agent is 12.0-20.0%; and according to the present invention, water is added at a water cement ratio of 0.45-0.55, and the mixture is stirred to prepare a soft soil curing agent slurry, which is injected into the soft soil foundation. According to the present invention, a cement curing agent is replaced with the carbonated steel slag, the slag powder and the fly ash, such that not only is the problem of the low utilization rate of industrial solid waste solved, and the consolidation cost of a mixing pile in the soft soil foundation is greatly lowered, but the treatment problem of the soft soil foundation in urban development and construction is also solved, and the present invention meets the requirements of "Technical Specifications for Consolidation Method of Mixing Pile in Soft Soil Foundation (YBJ225-91).

Classes IPC  ?

• E02D 3/00 - Amélioration ou conservation du sol ou de la roche, p. ex. conservation du permagel
• E02D 3/08 - Amélioration par compactage par insertion de pierres ou de corps perdus, p. ex. de pieux de compactage
• E02D 5/46 - Pieux en béton ou analogue coulés en place réalisés sur place par injection de liants dans des remblais graveleux ou dans le sol
• C09K 17/10 - Ciments, p. ex. ciment Portland
• C09K 103/00 - Utilisation en génie civil

Abrégé

Disclosed is a method for constructing a novel starter dam suitable for an upstream tailings pond, comprising: laying a starter dam body bottom anti-seepage layer; providing a starter dam upstream seepage drainage prism body (1) and a starter dam downstream seepage drainage prism body (1,) respectively on the upstream and downstream of the starter dam, and laying a starter dam seepage drainage mattress (2) on the starter dam body bottom anti-seepage layer, lower ends of vertical seepage drainage blind ditch pipe (3) being in communication with the starter dam seepage drainage mattress (2); pre-embedding inclined drainage blind ditches at positions where the starter dam contacts mountain bodies, and pre-embedding transverse blind ditches at positions where the starter dam contacts the mountain bodies; and building the starter dam layer by layer from bottom to top, and compacting same in a layered manner, and constructing an anti-seepage protective slope layer (5) on an upstream slope surface of the starter dam. The present invention has advantages of low construction cost, small amount of stones used, and good water-permeable effect. By designing a drainage facility inside a starter earth dam, the earth dam meets the requirement of a water-permeable dam.

Classes IPC  ?

• E02B 7/02 - Barrages fixes
• E02B 3/16 - Étanchement ou joints
• E03F 3/04 - Canalisations ou accessoires spécialement adaptés aux égouts