Method for extraction of slanting extraction fields at sloping coal beds

FIELD: mining industry.

SUBSTANCE: method includes preparation of slanting extraction fields at whole area, driving transport drifts, driving ventilation drift for upper extraction field and use of transport drifts of extracted fields as ventilation drifts during extraction of lower extraction fields, and preparation of chamber for coal through block lower than transport drift. Transport drift and chamber are driven with straight preparation and extraction order for extraction fields, using solid system of fields extraction. Chamber is connected to transport drift by links and is driven in advance relatively to it with slant to provide for free draining of water from transport drift and chamber. Chamber width is set on basis of condition for displacement of working toll of technological extraction complex in it.

EFFECT: higher intensiveness, higher reliability.

3 dwg

 

The invention relates to the mining industry and can be used in the development of flat and sloping lying coal seams.

Known way to develop average power gently sloping and sloping shallow coal seams at which the slope of the extraction field are prepared by the sinking of the ventilation drift in the upper part of the field and transport drift in the lower part of the field. Transportation roadway supported pliable tables (see, for example, Vinakourov, Hieronymo “Design and calculation processes of underground mining operations”. Rostov n/A., Pegasus, 1995, s). Main conveyor is displayed directly on the transport drift. Niches are formed periodically, but only in the upper part of the lava. The disadvantage of this method during the development of the slope excavation fields that, as in the sinking of the ventilation and transport drifts, and in stoping created difficulties because of the water, which reduces the intensity of the training and testing of the slope excavation fields, and the creation of niches in the upper part of the lava laborious and inhibits the intensity of the treatment works.

Also known development method is gently sloping and sloping lying coal seams solid development system along strike adopted for the prototype, in which the mining field is prepared by sinking at the top is part of the field of ventilation drift, and on the level of the main horizon, traffic roadway above the transport drift through the pillar of coal is passed interlayer, which is periodically connected with the transport drift coal-loading Bonami (see, for example, Appcracks “Technology of mining. M.: Nedra, 1992, s, Fig.7.1). Preparatory development slightly ahead in space and in time treatment. Preparatory and cleaning works within the mining field, floor, area, or tiers are at the same time. To prepare for cleaning the work from clearing the ventilation drift coal is passed in a split furnace. Then in the upper and lower parts of the lava ejected niches for the placement of the working body production and technological complex. The disadvantages of this method is that during the preparation of the slope field total drilling volume transport and ventilation drifts and clearing very large, and their penetration is difficult because of the water that limits the intensity of both training and sewage extraction, and if the treatment works is required to periodically perform a very labor-intensive education in upper and lower parts of the lava niches, which also reduces the intensity of the treatment works. The main disadvantage of this option is that when the reservoir preparatory development are bomb it rocks which is issued together with coal, thereby increasing its ash content.

As the prototype accepted method of development of the slope excavation fields on sloping coal seams, including the preparation of the slope excavation fields along strike, conducting transport drifts, holding the ventilation drift to the top of the extraction field and use as ventilation drifts when designing placed below the mining fields of transport drifts waste excavation fields, and prepares the camera for coal through the pillar below the transport passage, which connects with him Bonami and spend ahead toward him with a slope to ensure free flow of water from the transport passage and the chamber, and the width of the camera set on the basis of conditions of the placing in her of the working body process mining complex (see EN 2206742 C2, Ál. E 21 41/18, publ. 20.06.2003). The development is long poles along strike.

The disadvantage of this method is the lack of intensity testing of the slope excavation fields.

The technical result of the invention is to improve reliability and intensity of the continuous complexes regardless of the water.

The claimed technical result is achieved in that in the method of development of the slope excavation fields on sloping coal seams, including the non preparation of the slope excavation fields along strike, holding transport drifts, holding the ventilation drift to the top of the extraction field and use as ventilation drifts when designing placed below the mining fields of transport drifts waste excavation fields, and prepares the camera for coal through the pillar below the transport passage, which connects with him Bonami and spend ahead toward him with a slope to ensure free flow of water from the transport passage and the chamber, and the width of the camera set on the basis of conditions of the placing in her of the working body of process mining complex, the transport passage and the camera is carried out at the direct order of preparation and mining fields, using a continuous system development excavation fields.

The essence of the invention represented in the drawings, where figure 1 is the projection on the horizontal plane of the continuous system development, including parallel haulage drift chamber, figure 2 is a vertical section along the line I-I, figure 3 is a vertical section along the line II-II.

The method is as follows.

To prepare the top of the extraction field along its upper boundary are two generation: one as the ventilation drift may bomb it with enclosing rocks 1, the other only by coal chamber 2 is below ventiljats the district drift through the pillar of coal 3. The cross section of the two openings should ensure proper ventilation of the lava and other faces. Therefore, the cross section of the ventilation passage can be made as low as possible, and the minimum cross-section of the chamber should be equal to S=m/lCamwhere m is the reservoir thickness, m; lCam- the width of the camera meters Feature of the camera is that it takes place ahead of the ventilation drift and always with a bias, providing a flow of water toward the main opening workings during the excavation of the mine workings and in the future during the lifetime of both openings.

To prepare the lower part of the extraction field is also held two working: transport passage 4 with the bomb it rocks and Luggage for coal through the pillar 5 below the transport roadway, all produce slightly ahead of the lava. The camera takes place with a slight delay with respect to the transport passage and always with a bias to ensure free flow of water from both mines during the sinking of these workings and out of all of the extraction field. Transport drift periodically connects to the camera Bonami 6 to drain water from the sinking of the transport passage. This provided favorable conditions for the transport of drift during the entire period of preparation and testing of the extraction field. After testing the top in the pubic extraction field preparation of all other placed below the excavation field is sinking only transport drift and below its level through the rear of the camera. After longwall field transport roadway serves as a vent during the development of the bottom of the extraction field, and the camera or its part is used instead of NIS for translation of the working body of technological production facility to a new tape.

Despite the fact that the volume of the tunnel preparation and cutting of the slope of the extraction field in the proposed new version is about the same as in the prototype, due to the almost simultaneous execution of excavating and cleaning work in the new version of direct preparation and mining fields the opportunity to begin cleanup work on 1-1,5 years earlier than in the prototype and thus reduce the payback period loans to perform the tunneling works. Thanks to the creation of conditions for rapid commissioning lava 7, due to the simultaneous conduction of treatment and preparatory works, more reliable operation of the transport passage in the longwall field, and also due to the elimination of niches created conditions for increasing not only the load on the lava, but the production capacity of the mine in General. Thus, when a new technological scheme provides not only the possibility of a quick payback on the sinking and the minimum amount of tunneling works, including rocks, but also increased the highlighted line length stope, eliminated time-consuming sinking niches in the lava, and provide more reliable and intensive treatment complexes regardless of the water production and downtime due to the need for penetrations niches.

Method development of the slope excavation fields on sloping coal seams, including the preparation of the slope excavation fields along strike, conducting transport drifts, holding the ventilation drift to the top of the extraction field and use as ventilation drifts when designing placed below the mining fields of transport drifts waste excavation fields, and prepares the camera for coal through the pillar below the transport passage, which connects with him Bonami and spend ahead toward him with a slope to ensure free flow of water from the transport passage and the chamber, and the width of the camera set on the basis of conditions of the placing in her of the working body of process mining complex, characterized in that the transport passage and the camera is carried out at the direct order of preparation and mining fields, using a continuous system development excavation fields.



 

Same patents:

FIELD: mining industry.

SUBSTANCE: method includes erection of rows of main platforms along bed length in staggered order with length equal or divisible by step value for support displacement, and placing filling material thereon. Along length of main platforms between ceiling and bed soil post support is mounted, upon which filling material is fed. After that between main platforms additional platforms are erected with wedge supporting, and main platforms are rotated counter-clockwise towards pneumatic support and it is displaced for one drive step. During that filling material, while lowering, unwedges wedge support between ceiling and bed soil and forms artificial supports. After that additional platforms are rotated counter-clockwise towards pneumatic support. After movement of cleaning face for two drive steps operations for constructing artificial supports are repeated. Distance between main platforms along bed fall line are selected from mathematical expression.

EFFECT: higher efficiency.

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8 cl, 5 dwg

FIELD: mining industry.

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SUBSTANCE: method includes driving of layer transporting and ventilation mines along soil and ceiling of bed, in massive and in extracted space, cutting of cleaning mines in cross-section of bed at angle of 27°, mechanized delivery of coal along bed mines to coal furnaces and vertical dropping of coal to furnaces. Extraction of slanted transverse bed is performed along bed diagonals having direction to horizon at angle of 27°, to provide for free sliding of coal without degradation. Delivery of coal from cleaning mine placed at angle of 60° to layer mine, to back field mine is performed by self-delivery from any place of extraction field along layer mine, field coal-lowering mine and field slanting coal furnace, being at angle of 27° to horizon. Field slanted coal furnaces are placed at distance from one another along 20 m normal. Field coal mines in form of fans of three mines are connected on field slanted coal furnaces at distance of fan start from one another of 60 m with output of mines ends to each layer mine of group of three above-lying slanted-transverse layers for whole diagonal length of extraction field at distance between mines outputs along layer soil of 60 m. Ceiling of cleaning mines may be supported without load, utilizing mechanical traction on the side of ventilation furnaces for pressing moveable support tool to layer ceiling.

EFFECT: higher efficiency.

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EFFECT: higher efficiency, effectiveness, broader functional capabilities.

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FIELD: mining industry.

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EFFECT: higher efficiency.

1 dwg

FIELD: mining industry.

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EFFECT: higher personnel safety, higher efficiency, lower costs.

1 dwg

FIELD: mining industry.

SUBSTANCE: method includes driving mines in front of cleaning face, processing ceiling and mineral resource by softening agents and extraction of it by cleaning combines with additional removal of mineral resource from below the ceiling. In massif below the ceiling shafts and mines are driven at maximal distance on basis of capabilities of used drilling equipment, not allowing during drilling fro processing massif below ceiling deviation from it until contact with surface by face-adjacent ceiling, supported by cleaning combine support, and distance between following driven mines is doubled, which mines are necessary for displacement of drilling equipment and equipment for feeding softening agent into wells. After finishing its pumping these wells and mines are used through connections in shafts with removing pipeline for extracting methane and degassing mineral resources. Stack of mineral resource unprocessed by softening agent has value of no more than one-two steps of extraction of coal bands along whole length of cleaning face, and the very removal of mineral resources from massif is performed in portions along whole length of mineral resource no more than 2-3 thicknesses f cutting bands of mineral resource. Device for cutting massif includes sections of mechanized support, containing base, connected to spreader posts, extending executive tool. Combine support on the side of cave-in between back posts has wedge-shaped cutting posts, hydraulically connected to back posts. Cutting posts are provided with individual means for controlling feed and draining of hydraulic liquid. Cutting posts have devices, forming in case of their spreading vibration of hydraulic liquid sent to them.

EFFECT: higher efficiency, higher personnel safety.

2 cl, 3 dwg

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