CN102444401B - Coal mining method by filling on blasting mining face of thin coal seam and relevant equipment - Google Patents
Coal mining method by filling on blasting mining face of thin coal seam and relevant equipment Download PDFInfo
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Abstract
The invention relates to a coal mining method by filling on a blasting mining face of a thin coal seam and relevant equipment, belonging to the technical field of coal-mining and filling equipment of the thin coal seam. The method comprises the following main steps of: carrying out parallel operation on coal mining and filling under the protection of a same hydraulic bracket, and taking the relevant equipment such as the hydraulic bracket, a solid material scraping plate conveyer and a bridge-type stage loader as basis. The invention is applicable to coal mining operation by filling on the blasting mining face of the thin coal seam below 1.3m.
Description
Technical field
Coal mining method by filling on blasting mining face of thin coal of the present invention and relevant device, belong to girdle and mine and the stowage unit technical field, is specifically related to a kind of method and relevant device of blasting mining in thin seam work plane filling coal mining.
Background technology
Coal mining both provided the energy for human survival, also human environment had been produced to serious negative effect simultaneously.Coal mining is not only in formation goaf, down-hole, cause ground surface to subside, surface structures and highway are damaged, and a large amount of discarded object (spoil accounts for mainly) is discharged from down-hole, the one, need to take a large amount of soils, the 2nd, spontaneous combus tion of waste heap is serious environment pollution again.So traditional coal mining method Challenge.The Chinese scholar such as Qian Minggao academician propose the new ideas of Coal Green exploitation, (mining area Green Mining Technology, publishing house of China Mining University, in March, 2002) Sun Henghu etc. proposes high-water material filling technique (contemporary consolidated fill technology, metallurgical industry publishing house, in March, 2008), Miao Xiexing etc. propose solid waste filling technique (comprehensive mechanization solid waste filling coal mining method and technology, publishing house of China Mining University, in December, 2010), in Ji, the mine such as energy Xingtai Coal Mine has carried out research and the industrial test of discarded object filling mining, and obtained success.That is: discarded object (spoil) is filled to the goaf of coal, makes discarded object (spoil) no longer need gug.After the discarded object that the coal goaf is filled with (spoil) is full of, just can not cause subsiding of ground surface, thereby solved discarded object (spoil) gug and formed the occupation of land of discarded object (spoil accounts for mainly) mountain and contaminated environment, ground surface the subside above ground structure that causes and the damage of highway.
But above-mentioned research and industrial test are only carried out in coal seam more than 2 meters, girdle (below 1.3 meters) is because exploitation exists: Coal Seam Thickness Change is large; Operating space is little, poor working environment, the reason such as benefit is low.It is blank that the solid waste filling still belongs at present, particularly contains the blasting mining in thin seam work plane that can not use coal-winning machine of hard dirt band.
Summary of the invention
For overcoming the deficiencies in the prior art, the invention provides a kind of coal mining method by filling on blasting mining face of thin coal and relevant device, be applicable to the following blasting mining in thin seam work plane filling coal mining of 1.3m.
For solving the problems of the technologies described above, the technical solution used in the present invention is: coal mining method by filling on blasting mining face of thin coal, and comprise and mining and filling, under same hydraulic support shielding, mine and the filling parallel operations.
Coal mining method by filling on blasting mining face of thin coal carries out in the steps below:
The first step, excavate raw coal transportation lane and solid filling transport of materials lane; And cut eye, form ventilation system;
Second step is installed the first conveyer in the raw coal transportation lane, on the exploitation work plane, a hydraulic support at least is installed, and in the place ahead of hydraulic support, second conveyor is installed, and the first conveyer is connected with second conveyor by fortune coal elevating conveyor.
The 3rd step, install the 3rd conveyer in solid filling transport of materials lane, solid filling material drag conveyor is installed at the hydraulic support rear of installing on the exploitation work plane, and the 3rd conveyer is connected with solid filling material drag conveyor by bridge conveyor.
The first conveyer, second conveyor and the 3rd conveyer or be drag conveyor, or be rubber conveyer.
The 3rd conveyer is connected with ground solid filling material delivery system by the well that feeds intake, and ground solid filling material delivery system comprises: tip, solid filling material storehouse, ground and the well that feeds intake; Adopt loading mechanization that the solid filling material is transported to charging hopper from tip, carry out fragmentation by the crushing engine that is arranged on the charging hopper below, be transported to solid filling material storehouse, ground by the 4th conveyer again, be transported to by the 5th conveyer that is arranged on below, solid filling material storehouse, ground the well that feeds intake again, finally by the well that feeds intake, enter the 3rd conveyer.
The 4th conveyer and the 5th conveyer or be drag conveyor, or be rubber conveyer.
The filling process flow process is: by solid filling material drag conveyor, filling is carried out in solid filling mass transport to hydraulic support rear end, filling is sequentially to be carried out to heading by solid filling material scraper conveyor tail, when falling after being dumped into certain altitude, previous striker plate rises, then next striker plate falls, start immediately the reinforcement mechanism at the hydraulic support rear portion at previous striker plate place, the solid filling material unloaded is tamped, until compacting.When whole exploitation work plane all is full of, stop first round filling, solid filling material drag conveyor is drawn and moves a step pitch, the hydraulic support upper back is all shifted in the casting resin of solid filling material drag conveyor being unloaded with reinforcement mechanism onto, make it connect top compacting, finally open all striker plates, head to solid filling material drag conveyor carries out filling, after first round filling completes, solid filling material drag conveyor is passed to a step pitch to the hydraulic support front portion, start second and take turns filling.
A kind of hydraulic support of the design according to the present invention comprises: back timber, pillar and base, and back timber comprises front back timber and rear back timber, and front back timber and rear back timber are hinged to one, and forestope is arranged on the front end of front back timber by guide runner mechanism, and forestope is and upwarps structure; Front back timber bottom is equipped with spillplate, spillplate comprises spillplate and lower spillplate, upper spillplate is hinged on the bottom of front back timber, upper spillplate is connected with the push unit that is arranged on front back timber bottom, lower spillplate is fixedly mounted on the ledge of second conveyor near the base of hydraulic support, the base rear portion of hydraulic support is equipped with reinforcement mechanism, and the reinforcement mechanism below is equipped with stretching device, and the stretching device front end is connected with solid filling material drag conveyor.
A kind of solid filling material drag conveyor of the design according to the present invention, comprise: motor, reductor, machine head chain wheel, striker plate and tail sprocket wheel, motor via reducer is connected with machine head chain wheel, machine head chain wheel is connected with the tail sprocket wheel by chain, be provided with the solid material delivery chute between machine head chain wheel and tail sprocket wheel, be provided with striker plate on the solid material delivery chute, striker plate is " recessed " word structure, the lower hinge of striker plate is on the solid material delivery chute, the top of striker plate and the front end of hydraulic jack are hinged, the hinged solid material delivery chute in the rear end of hydraulic jack.
A kind of bridge conveyor of the present invention's design comprises: head section, mid portion and tail part, and head section is provided with support column, and support column is hydraulic jack; Tail part and the 3rd conveyer tail overlap joint that partly overlaps, be provided with slideway before and after below the H frame of the 3rd conveyer tail part, tail part, mid portion, head section all are placed on above slideway, on the H frame of the 3rd conveyer tail part, pulling and moving equipment is installed, pulling and moving equipment moves chain and is connected with bridge conveyor by drawing.
The beneficial effect that the present invention compared with the existing technology has is:
The present invention is by design coal mining method by filling on blasting mining face of thin coal and relevant device, can realize the girdle filling coal mining below 1.3 meters, solid filling material transport system of the present invention, by the safe and efficient down-hole that is delivered to of ground solid filling material, and be transported to the solid filling materials transportation system in blast mining face goaf, and tamp by reinforcement mechanism.Realize girdle high-efficiency and continuous filling coal mining.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is apparatus arrangement schematic diagram of the present invention;
Fig. 2 is ground solid filling material transport system figure of the present invention;
Fig. 3 is filling coal mining system layout of the present invention;
The structural representation that Fig. 4 is hydraulic support of the present invention;
The structural representation that Fig. 5 is solid filling material drag conveyor of the present invention;
The striker plate structural representation that Fig. 6 is solid filling material drag conveyor of the present invention;
The structural representation that Fig. 7 is bridge conveyor of the present invention;
The A-A amplification view that Fig. 8 is bridge conveyor of the present invention;
The B-B amplification view that Fig. 9 is bridge conveyor of the present invention;
The C-C amplification view that Figure 10 is bridge conveyor of the present invention.
In figure, 1 is hydraulic support, 2 is the raw coal transportation lane, 3 is solid filling transport of materials lane, 4 is the first conveyer, 5 is second conveyor, 6 is fortune coal elevating conveyor, 7 is the 3rd conveyer, 8 is solid filling material drag conveyor, 9 is bridge conveyor, 10 is loading mechanization, 11 is tip, 12 is charging hopper, 13 is crushing engine, 14 is the 4th conveyer, 15 is solid filling material storehouse, ground, 16 is the 5th conveyer, 17 is the well that feeds intake, 18 is striker plate, 19 is reinforcement mechanism, 20 is pillar, 21 is base, 22 is front back timber, 23 is rear back timber, 24 is forestope, 25 is spillplate, 26 is upper spillplate, 27 is lower spillplate, 28 is push unit, 29 is stretching device, 30 is motor, 31 is reductor, 32 is machine head chain wheel, 33 is the solid material delivery chute, 34 is the tail sprocket wheel, 35 is hydraulic jack, 36 is head section, 37 is mid portion, 38 is the tail part, 39 is the 3rd conveyer tail part, 40 is the H frame, 41 is slideway, 42 is pulling and moving equipment, 43 move chain for drawing, 44 is support column.
The specific embodiment
As shown in Figure 1, the girdle filling coal mining is the organic synthesis of coal mining and mechanization solid filling.Coal mining method by filling on blasting mining face of thin coal, with traditional blast mining face, compare, the girdle solid filling is mined and can be realized mining and the filling parallel operations under same hydraulic support 1 shielding, the face layout form that the girdle solid filling is mined and traditional blast mining face are arranged basic identical, difference is the rear at coal-face, at goaf side, arrange the packing job face, arrange again a solid filling material transport mechanism in tailentry, or be rubber conveyer or for drag conveyor, the solid filling material is delivered on solid filling material drag conveyor 8.This face layout form, can realize filling and the parallel operations in same work plane of mining.
The installation that is used for the equipment of filling coal mining is carried out according to the following steps:
The first step, excavate raw coal transportation lane 2 and solid filling transport of materials lane 3; And cut eye, form ventilation system;
Second step, in the raw coal transportation lane, 2 install the first conveyer 4, on the exploitation work plane, a hydraulic support 1 at least are installed, and second conveyor 5, the first conveyers 4 are installed in the place ahead of hydraulic support 1 and are connected with second conveyor 5 by fortune coal elevating conveyor 6.
The 3rd step, in solid filling transport of materials lane, 3 install the 3rd conveyer 7, solid filling material drag conveyor 8, the three conveyers 7 being connected by bridge conveyor 9 and solid filling material drag conveyor 8 installed at hydraulic support 1 rear of installing on work plane in exploitation.
The first conveyer 4, second conveyor 5 and the 3rd conveyer 7 or be drag conveyor, or be rubber conveyer.
The basic thought of blasting mining in thin seam work plane filling coal mining technology is that the discarded object of ground or down-hole is used as to filler as spoil, flyash, building waste, loess, drift-sand etc., and down-hole driving discarded object spoil etc. carries out filling by can directly being transported to work plane after the processing such as fragmentation.
As shown in Figure 2, general solid filling material (mining area solid waste) need be transported to filling operation face from ground, therefore needs to arrange a set of from ground solid filling material transport system.This transportation system is connected with the 3rd conveyer 7 by the well 17 that feeds intake, by some transfer systems, finally the solid filling material is sent into to solid filling material drag conveyor 8, striker plate 18 by solid filling material drag conveyor 8 is discharged into goaf again, finally by the reinforcement mechanism 19 at hydraulic support 1 rear portion, is tamped.
Ground solid filling material delivery system comprises: tip 11, solid filling material storehouse, ground 15 and the well 17 that feeds intake; Adopt loading mechanization 10 that the solid filling material is transported to charging hopper 12 from tip 11, carry out fragmentation by the crushing engine 13 that is arranged on charging hopper 12 belows, be transported to solid filling material storehouse, ground 15 by the 4th conveyer 14 again, be transported to by the 5th conveyer 16 that is arranged on 15 belows, solid filling material storehouse, ground the well 17 that feeds intake again, finally by the well 17 that feeds intake, enter the 3rd conveyer 7.
The hillock spoil of take is transported to the well 17 that feeds intake and introduces ground solid filling material delivery system as example.Spoil following problem may occur in the ground transport process: it is longer that 1. spoil is piled up the time on ground.The impact of the natural cause such as be subject to air humidity, rainfall, expose to the weather is serious, and the small spoil particle of granularity corrodes through long-term, may cohere on rubber conveyer; Simultaneously, humidity greatly also can affect the mechanical property of spoil, and then affect filling effect.2. hillock spoil granularity is inhomogeneous, and the larger spoil of particle diameter stops up as directly thrown in into the well 17 that feeds intake, easily cause the well 17 that feeds intake.3. ground transportation system miscarriage, can cause ground inventory and down-hole use amount unbalanced, affects downhole production.
For above problem, take following mode to be solved: 1. build the ground transport corridor, the protection ground transportation system, be subject to the impact of the natural cause such as rainfall to avoid the solid filling materials such as spoil; 2. increase broken link in ground transportation system, the spoil larger to particle diameter carries out fragmentation; 3. the control room that feeds intake, ground is set, floor-based transport is controlled, coordinate the relation between ground inventory and down-hole use amount.
General ground solid filling material delivery system is divided into 3 links: 1. the solid filling material is loaded into to charging hopper 12.This link mainly adopts loading mechanization 10, and the solid filling material is reprinted to charging hopper 12.2. the solid filling material is carried out to fragmentation.The solid filling material is transported to crushing engine 13 or can, by 12 times direct breaker mountings 13 of charging hopper, by crushing engine 13, carries out fragmentation by conveyer.3. be transported to the well 17 that feeds intake.Solid filling material after fragmentation can directly be delivered to by transporter the well 17 that feeds intake, now to there is control system to be controlled the travelling speed of solid filling material, need in the case of necessary to arrange solid filling material storehouse, ground 15, then enter by several transportation systems the well that feeds intake.
As shown in Figure 3, girdle solid filling coal mining system arranges, wherein transports coal, haul, ventilation, fortune cash route as follows:
Fortune coal route: go up a hill → main haulage roadway → haulage cross-cut of filling coal mining work plane → haulage way → transportation → shaft coal pocket → main shaft → ground.
Haul route: the large lane of auxiliary shaft → shaft station → assistant conveyance crossdrift → assistant conveyance → bottom, exploiting field parking lot → ginney → top, exploiting field parking lot → tailgate → filling coal mining work plane.
New wind path line: the large lane of auxiliary shaft → shaft station → assistant conveyance crossdrift → assistant conveyance → ginney tailgate → filling coal mining work plane.
Weary wind path line: filling coal mining work plane → tailgate → windstone gate → ventilating shaft.
Fortune spoil route: the ground → solid material vertical transport system → shaft station → large lane → ginney of assistant conveyance crossdrift → assistant conveyance → tailgate → filling coal mining work plane.
Coal mining method by filling on blasting mining face of thin coal technique comprises coal winning technology and filling process.Coal winning technology is identical with common blast mining face, and its filling process flow process is: at blast mining face, solid filling material drag conveyor 8 is moved to the rear back timber of hydraulic support 1 23 rear portions and carry out filling.The filling order is carried out to heading by solid filling material drag conveyor 8 tails, when filling not, the striker plate 18 of solid filling material drag conveyor 8 is opening or rise state, close after being dumped into certain altitude and rise when previous striker plate 18, close next striker plate 18 dischargings, the reinforcement mechanism 19 that starts immediately previous striker plate 18 support rear portions, place promotes the compacting plate, and the solid filling material unloaded is tamped.Several circulation like this, until compacting.When whole work plane all is full of, stop first round filling, solid filling material drag conveyor 8 is drawn and moves a step pitch, move to back timber 23 rear portions after support, hydraulic support 1 front upper part is all shifted in the casting resin of solid filling material drag conveyor 8 being unloaded with reinforcement mechanism 19 onto, make it connect top compacting, finally open all striker plates 18, the head of solid filling material drag conveyor 8 is carried out to filling.After first round filling completes, solid filling material drag conveyor 8 is passed to a step pitch to back timber 23 rear portions after support, started second and take turns filling;
Coal mining method by filling on blasting mining face of thin coal realizes that filling is hydraulic support 1 with the Core equipment developed simultaneously of mining in same work plane.Many weeks, realize that the 3 large main points that solid filling is mined are: space, passage and power, and in the face layout form of coal mining method by filling on blasting mining face of thin coal: (1) hydraulic support 1 is compared with the conventional hydraulic support, removed back timber after the shielding of conventional hydraulic support, in generation, is with back timber after level 23, after the solid filling material directly can being poured to level, back timber 23 screens in spaces, rather than goaf; (2) by bridge conveyor 9, the solid filling material is transported to the solid filling material drag conveyor 8 below back timber 23 after the level of being laid on, forms the continuous transfer passage of solid filling material; (3) the solid filling material, then is tamped the solid filling material by reinforcement mechanism 19 by striker plate 18 in solid filling material drag conveyor 8 is discharged into the shielding space of rear back timber 23 to goaf, realizes the sold stowing of solid filling material.For the coal that explosion is dished out is fallen on the conveyer of base 21 front installations, at the front back timber 22 of hydraulic support 1, divide into spillplate 25 simultaneously.
As shown in Figure 4, the hydraulic support 1 that meets the 3 large main points designs that realize that solid filling is mined comprises: back timber, pillar 20 and base 21, its primary structure is: back timber comprises front back timber 22 and rear back timber 23, front back timber 22 is hinged to one with rear back timber 23, front back timber 22 front end sleeves are equipped with forestope 24, forestope 24 is arranged on the front end of front back timber 22 by guide runner mechanism, forestope 24 is and upwarps structure, while not stretching out a little less than front back timber 22 planes, on stretching out in process gradually, lift, in order to there is the good top performance that connects, front back timber 22 bottoms are equipped with spillplate 25, spillplate 25 comprises spillplate 26 and lower spillplate 27, upper spillplate 26 is hinged on the bottom of front back timber 22, upper spillplate 26 is connected with the push unit 28 that is arranged on front back timber 22 bottoms, lower spillplate 27 is fixedly mounted on the ledge of second conveyor 5 near the base 21 of hydraulic support 1, upper spillplate 26 can be when not blowing out, by push unit 28, can upwards dig to horizontal level, so that formation walkway, while blowing out, upper spillplate 26 recovers and front back timber 22 upright positions by push unit 28, and overlap with lower spillplate 27, form enclosing wall, the coal that explosion is dished out is dropped on transporter, be provided with equidistant isodiametric bleeder port on spillplate 25, the gas produced to discharge explosion.Base 21 rear portions of hydraulic support 1 are equipped with reinforcement mechanism 19, and reinforcement mechanism 19 belows are equipped with stretching device 29, and stretching device 29 front ends are connected with solid filling material drag conveyor 8.
Hydraulic support 1 adopts brace type to stamp the formula hydraulic rack structure, and back timber adopts overall structure, and movable side protection plate is not established in the back timber both sides, to simplify supporting structure, to alleviate weight support frame.Front back timber 22 is the latch plate structure with rear back timber 23, in order to reduce back timber thickness, adapts to better blasting mining in thin seam working face mining needs.
The integrated moving of hydraulic support 1, adopt jack to double as guiding mechanism.The passing step pitch is 1200mm, and the stroke of advancing jack is 1 300mm.Jack is prior art, can directly apply.
In order to increase as far as possible the height of walkway, alleviate the weight of blasting mining in thin seam work plane filling coal mining hydraulic support 1, pillar 20 and base 21 are designed to the flexible structure of steel spring plate.
Hydraulic support 1 has adopted two expansion box stabilizing mechanisms, and base 21 postmedians arrange respectively the uncovered casing, and expansion box is mated and slides therein, and expansion box nose end and back timber belly ear are hinged, have guaranteed the stability of support.This stabilizing mechanism has compact conformation, lightweight advantage.
As shown in Figure 5, Figure 6, girdle, because space little ， rear portion filling drag conveyor can not be suspended on the rear back timber 23 times of hydraulic support 1, therefore, must design adapt to girdle solid filling material drag conveyor 8.It comprises: motor 30, reductor 31, machine head chain wheel 32, striker plate 18, solid material delivery chute 33 and tail sprocket wheel 34, motor 30 is connected with machine head chain wheel 32 by reductor 31, machine head chain wheel 32 is connected with tail sprocket wheel 34 by chain, be provided with solid material delivery chute 33 between machine head chain wheel 32 and tail sprocket wheel 34, be provided with striker plate 18 on solid material delivery chute 33, striker plate 18 is " recessed " word structure, the lower hinge of striker plate 18 is on solid material delivery chute 33, the front end of the top of striker plate 18 and hydraulic jack 35 is hinged, the hinged solid material delivery chute 33 in the rear end of hydraulic jack 35.
The solid filling material is entered by solid material delivery chute 33, under the drive of conveyer, by tail to head motion, according to the filling process flow process, striker plate 18 is by under the material gear, reinforcement mechanism 19 by base 21 rear portions that are installed in hydraulic support 1 pushes goaf compacting by the solid filling thing, to realize coal mining and filling parallel operations.
As shown in Fig. 7 to 10, in coal mining method by filling on blasting mining face of thin coal, to goaf, be the solid filling material transfer key technology, bridge conveyor 9 is the equipment of attal drag conveyor 10 that the solid filling material is proceeded to by transporter, adopt of medium-thickness seam filling at present covered belt stepped type conveyer more, the structure of covering belt walking conveyer is for installing the rubber conveyer that is the upward slope shape additional covering belt moving trolley top, but because need to realize mobile with covering the belt moving trolley, so not only price is high to cover belt walking conveyer, and require head-room high, cause difficult, cause cost of winning to improve.Therefore, must design the bridge conveyor 9 that adapts to the girdle filling, it comprises: head section 36, mid portion 37 and tail part 38, tail part 38 and the 3rd conveyer tail part 39 overlapping overlap joints, effectively overlap joint is of a size of and can meets the required size of the working face extraction production regular circulation of class, be provided with slideway 41 before and after below the H frame 40 of the 3rd conveyer tail part 39, tail part 38, mid portion 37, head section 36 all is placed on above slideway, on the H frame 40 of the 3rd conveyer tail part 39, pulling and moving equipment 42 is installed, pulling and moving equipment 42 moves chain 43 and is connected with bridge conveyor 9 by drawing, pulling and moving equipment 42 journeys are greater than 1 coal mining cyclic advance.
The support column 44 of head section 36 is hydraulic jack, can adapt to the requirement of head-room and feed height change.
The 3rd conveyer tail part 39 is segmentation overall steel shelf structure, and each segmentation integral body is connected into an integral body by connecting bolt, in order to lay slideway 41, for bridge conveyor 9, retreats.
Claims (4)
1. coal mining method by filling on blasting mining face of thin coal, comprise and mining and filling, under same hydraulic support shielding, mine and the filling parallel operations, it is characterized in that: described filling process flow process is: by ground solid filling material delivery system drag conveyor (8), filling is carried out in solid filling mass transport to hydraulic support (1) rear end, filling is sequentially to be carried out to heading by solid filling material drag conveyor (8) tail, when falling after being dumped into certain altitude, previous striker plate (18) rises, then next striker plate (18) falls, start immediately the reinforcement mechanism (19) at hydraulic support (1) rear portion at previous striker plate (18) place, the solid filling material unloaded is tamped, until compacting, when whole exploitation work plane all is full of, stop first round filling, solid filling material drag conveyor (8) is drawn and moves a step pitch, hydraulic support (1) upper back is all shifted in the casting resin of solid filling material drag conveyor (8) being unloaded with reinforcement mechanism (19) onto, make it connect top compacting, finally open all striker plates (18), head to solid filling material drag conveyor (8) carries out filling, after first round filling completes, solid filling material drag conveyor (8) is passed to a step pitch to hydraulic support (1) front portion, start second and take turns filling, described ground solid filling material delivery system comprises: tip (11), solid filling material storehouse, ground (15) and the well that feeds intake (17), adopt loading mechanization (10) that the solid filling material is transported to charging hopper (12) from tip (11), carry out fragmentation by the crushing engine (13) that is arranged on charging hopper (12) below, be transported to solid filling material storehouse, ground (15) by the 4th conveyer (14) again, be transported to the well that feeds intake (17) by the 5th conveyer (16) that is arranged on below, solid filling material storehouse, ground (15) again, finally by the well that feeds intake (17), enter the 3rd conveyer (7), enter into solid filling material drag conveyor (8) by bridge conveyor (9) again, be discharged into goaf by solid filling material drag conveyor (8) again.
2. the hydraulic support of a coal mining method by filling on blasting mining face of thin coal according to claim 1 design, comprise: back timber, pillar (20) and base (21), it is characterized in that: back timber comprises front back timber (22) and rear back timber (23), front back timber (22) is hinged to one with rear back timber (23), forestope (24) is arranged on the front end of front back timber (22) by guide runner mechanism, forestope (24) is and upwarps structure, front back timber (22) bottom is equipped with spillplate (25), spillplate (25) comprises spillplate (26) and lower spillplate (27), upper spillplate (26) is hinged on the bottom of front back timber (22), upper spillplate (26) is connected with the push unit (28) that is arranged on front back timber (22) bottom, lower spillplate (27) is fixedly mounted on the ledge of second conveyor (5) near the base (21) of hydraulic support (1), base (21) rear portion of hydraulic support (1) is equipped with reinforcement mechanism (19), reinforcement mechanism (19) below is equipped with stretching device (29), stretching device (29) front end is connected with solid filling material drag conveyor (8).
3. the solid filling material drag conveyor of a method according to claim 1 design, comprise: motor (30), reductor (31), machine head chain wheel (32), striker plate (18), solid material delivery chute (33) and tail sprocket wheel (34), it is characterized in that: motor (30) is connected with machine head chain wheel (32) by reductor (31), machine head chain wheel (32) is connected with tail sprocket wheel (34) by chain, be provided with solid material delivery chute (33) between machine head chain wheel (32) and tail sprocket wheel (34), be provided with striker plate (18) on solid material delivery chute (33), striker plate (18) is " recessed " word structure, the lower hinge of striker plate (18) is on solid material delivery chute (33), the front end of the top of striker plate (18) and hydraulic jack (35) is hinged, the rear end of hydraulic jack (35) is hinged on solid material delivery chute (33).
4. the bridge conveyor of a method according to claim 1 design, comprise: head section (36), mid portion (37) and tail part (38), it is characterized in that: head section (36) is provided with support column (44), and support column (44) is hydraulic jack; Tail part (38) and the 3rd conveyer tail part (39) overlapping overlap joint, be provided with slideway (41) before and after H frame (40) below of the 3rd conveyer tail part (39), tail part (38), mid portion (37), head section (36) are all placed slideway (41) in the above, on the H frame (40) of the 3rd conveyer tail part (39), pulling and moving equipment (42) is installed, pulling and moving equipment (42) moves chain (43) and is connected with bridge conveyor (9) by drawing.
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| CN110630322A (en) * | 2019-10-28 | 2019-12-31 | 陕西开拓建筑科技有限公司 | Thin coal seam coal and gangue separate mining and separate transportation filling mining system and mining method |
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| FR2600374B1 (en) * | 1986-06-19 | 1988-09-23 | Charbonnages De France | PROCESS FOR THE EXPLOITATION OF UNDERGROUND MINES OR QUARRIES BY DESCENDING REMOVALS AND LIGHTNING AND INSTALLATION FOR ITS IMPLEMENTATION |
| CN1061070A (en) * | 1990-10-29 | 1992-05-13 | 晋城矿务局 | Method of composity coal mining |
| CN100567703C (en) * | 2005-05-19 | 2009-12-09 | 兖矿集团有限公司 | Comprehensive coal-mining process by using long wall mining method |
| CN101526001A (en) * | 2008-11-26 | 2009-09-09 | 枣庄矿业（集团）有限责任公司滨湖煤矿 | Comprehensive mining opposite-pull working face coal excavating process for thin coal bed |
| US8262167B2 (en) * | 2009-08-20 | 2012-09-11 | George Anthony Aulisio | Apparatus and method for mining coal |
| CN201874597U (en) * | 2010-12-09 | 2011-06-22 | 郑州四维机电设备制造有限公司 | Tetrastyle paste filling timbering hydraulic support used in thin coal seam |
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2011
- 2011-11-28 CN CN 201110393149 patent/CN102444401B/en not_active Expired - Fee Related
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