How to develop powerful sloping coal seam

 

(57) Abstract:

The method is designed for mining of bedded deposits on the development system long poles along strike. How to develop powerful sloping coal seam, in which the excavation field prepare long poles along strike, with conveyor drift build long vent on the length of the lava. In conveyor roadway mounted belt conveyor, telescopic part which has at junction lava with drift. Dredging coal carry out the treatment harvester front steps, moving to the vent passage, takes the lower stack of coal and pulls the conveyor belt of the telescopic part through host rejection of tape located on the pair of lava from the roadway, thus carry out the fastening PetroChina anchors, moving in the opposite direction pulls out a stack of coal, upper, and destroys the anchor. Management of mountain pressure carry out a complete collapse of the roof using mechanized installation and carrying racks lining and mechanized drilling of blast holes. The invention will enhance the development of powerful sloping coal seam on system equipment. 6 Il.

The invention relates to mining, in particular to methods of mining of bedded deposits on the development system long poles along strike.

There is a method of design of sloping layers of long poles along strike, including conveyor and ventilation drifts, cutting and mounting it mechanized complex and the subsequent development of the mining of the pillar along the strike of the formation of reverse swing. Thus repulsed the coal is transported along the lava and the roadway containers [1].

The disadvantages of this method are: the capacity limit of the reservoir. When using modern high-performance systems such as PPD limit is 5 m; for excavation of the reservoir 4,5 - 5,0 m use a very metal complex, delivery and installation of which are time-consuming and labor-intensive; in the absence of such a complex is necessary to divide the reservoir into two layers, to use less metal complex, but then doubles the amount of preparatory workings and increase labor costs for installation and disassembly of the equipment.

Known another method is selected as prototype in this case, each of the preparatory production twice: once as transport, the other as ventilation [2].

The disadvantages of this method are: the complexity of the stope ventilation when developing the upper layer; very high " likelihood of dilution coal rocks of the roof when the notches of the lower layer; the need for dual installation-dismantle cleaning equipment.

These shortcomings reduce the effectiveness of the method with the development of powerful sloping coal seam.

The aim of the invention is the increased efficiency of the development of thick flat coal seam on the development system long poles along strike due to a sharp reduction in labor costs for Assembly-disassembly of pollution control equipment.

The technical result is achieved by the fact that in the known method the development of powerful sloping coal seam, comprising the conveyor and ventilation drifts, the cutting face of the recess of the coal when the movement of the harvester from the conveyor drift to the vent and back, transportation of coal along the lava and conveyor drift and management of mountain pressure complete collapse of blood, conveyor drift build long vent is not less than the length of the lava; conveyor roadway in which the Devi ations of the tape, which change the direction of movement of the upper branch of the conveyor belt, directing it from the roadway into the lava and back, and carry out the displacement of coal from one side of the conveyor to another; changing the length of the main part of the conveyor carried out by the harvester; the direction of movement of the harvester mining the coal control the relative angle of the tape; first remove the lower stack of coal and fixed ceilings anchors, then remove the upper stack of coal and destroy anchor; in the management of mountain pressure drilling the holes in the rocks of the roof and charge them with explosives, then build cut the number of supports by moving the racks dammed number in the gaps between the shield downhole number, then detonate EXPLOSIVES.

In Fig. 1 shows a diagram of the preparation of the stope (view in plan; Fig. 2 - scheme of increasing the length of the main part of the conveyor of Fig.3 - scheme of Spasovka the upper branch of the conveyor belt in a knot deviations tape (view); Fig.4 is a diagram of the installation of the racks lining (view in plan; Fig.5 - the same, after the valve combine in a niche; Fig.6 - scheme of drilling.

Long post prepared conveyor 1 and vent 2 drifts conducted in soil formation. This conveyor ø the shape Shearer 4 front action. Workspace supports the anchor 5 PetroChina 3 niches. In conveyor roadway 1 is mounted belt conveyor 6, telescopically which is approximately equal to the length of the lava (the distance between the conveyor and ventilation drifts). The pair niche 3 with the conveyor drift 1 mount the device 7 for deflection of the upper conveyor belt 6 and the displacement of the transported coal, and the tape 8 of the conveyor are mounted similarly line möbius, i.e., the rotation around the longitudinal axis by 180 degrees. To the rear of the harvester 4 hooked deflecting roller 9 of the pipeline 6. After that, include a harvester 4 and begin to notch the bottom of the chip. When the harvester moves in a strictly specified direction, extending through the roller 9 of the conveyor belt 6 and through the destruction of the mineral and its loading onto the conveyor belt 6. Following the combine, if necessary, carry out the anchorage of PetroChina. Use anchor from a material with high resistance to tensile and low - cut, for example, a polymer.

As the harvester forward increasing the length of the belt conveyor in the ongoing development. To avoid spilling mineral with Chatou form. Temporary support 10 mobile suit, ski, interconnected and combine with 4 flexible coupling 11. Due to the flexible connections 11 installation of temporary supports 10 carry out the pairing of lava from the roadway.

After the release of the harvester 4 on the roadway 2, it is stopped, raise the Executive body of the harvester to the roof of the reservoir and include in the work during movement in the opposite direction. This harvester 4 carries out the destruction of the mineral, its loading on the conveyor belt 6 in its main part and the polymer anchors 5, established during the movement of the combine direct course. At this time, the pair of lava with drift 1 exercise tightening temporary supports 10 with the speed of movement of the harvester 4 and dismantling freed supports. As reverse forwarding combine exercise fastening workspace individual support 12, for example, type GS. The crane 13 (for example, 1000 K, but performed on tracks), moving on Shearer road from the ventilation drift container 2 to the roadway 1, sets the rack 12 on both sides of the goaf at equal distance from each other.

During the excavation chips of coal combine 4 on pair of lava with conveyed the broken coal is carried out by the belt conveyor 6 along the lava and conveyer passage 1. This pair of lava with drift pluzhkovogo dumper 14 coal is discharged from the tape coming out of the lava, in the direction of the tray 15, which is fed to the tape moving along a conveyor drift, i.e., is the displacement of coal from one side of the tape to another.

The output of the Shearer on the roadway 1, it is stopped, the Executive body of the lower soil layer, from the rear of the harvester disconnect the deflecting roller 9 of the conveyor belt 6. Combine 4 push in a prepared niche 3, move the device 7 deviation of the carrier belt 6, is connected deflecting roller 9 and begin the next notch chips of coal.

During the excavation of the second chip of coal in mined-out space of the first chip are working on the management of mountain pressure. To do this mechanically, for example by means of the drilling rig 16 (type BOATS) uniformly over the entire length of drilling the holes in the roof of the reservoir in the space between the two rows of individual racks 12. The holes are charged with blasting charges. Then carry out the shifting of the dam of a number of racks 12 in the direction of the lava. When this movable racks lining is installed in the space between the posts downhole line through one, forming Samojlenko niche 3. Produce a blasting explosive charge, i.e., forced the collapse of the roof. Further, as described above.

The construction of the conveyor drift long vent allows you to put in the difference of the lengths of the telescopic part of the conveyor with a stock tape, sufficient to extend the main part of the conveyor.

Development of the reservoir in a single layer dramatically reduces the amount of installation work, improves ventilation of the stope, excludes dilution coal breed and the individual racks instead of the traditional sections of powered roof supports and telescopic belt conveyor in mining face instead of the scraper to cut the metal production and reduces labor costs for delivery and installation of equipment. All this allows to conclude that the increased efficiency of the development of thick flat coal seam.

How to develop powerful sloping coal seam, comprising the conveyor and ventilation drifts, the cutting face of the recess of the coal when the movement of the harvester from the conveyor drift to the vent and back, transportation of coal along the lava and conveyor drift and management of mountain pressure complete collapse of the roof, otlichalsya telescopic belt conveyor, on the pair of lava with a conveyor roadway construct the node deviation of the tape, which change the direction of movement of the upper branch of the conveyor belt, directing it from the roadway into the lava and back, and carry out the displacement of coal from one side of the tape to another, changing the length of the main part of the pipeline is performed by the processor, the direction of movement of the harvester when the notch is controlled relative to the site of the deviation of the belt, first remove the lower stack of coal and carry out the fastening PetroChina anchors, then remove the upper stack of coal and thus destroy the anchor, when the control roof drilling the holes in the rocks of the roof and charge their CC, then build cut the number of supports by moving the racks dammed number in the gaps between the shield downhole number, then detonate EXPLOSIVES.

 

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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.

2 cl, 3 dwg

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EFFECT: higher efficiency, effectiveness, broader functional capabilities.

8 cl, 5 dwg

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EFFECT: higher precision, higher speed of operation.

2 cl, 3 dwg

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EFFECT: higher efficiency.

2 dwg

FIELD: mining industry.

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3 dwg

FIELD: mining industry.

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3 dwg

FIELD: mining industry.

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EFFECT: higher efficiency.

1 dwg

FIELD: mining industry.

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FIELD: mining industry.

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