CN108468565B - Nearly horizontal coal seam long wall fully mechanized mining cemented filling equipment and method thereof - Google Patents
Nearly horizontal coal seam long wall fully mechanized mining cemented filling equipment and method thereof Download PDFInfo
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- CN108468565B CN108468565B CN201810200253.1A CN201810200253A CN108468565B CN 108468565 B CN108468565 B CN 108468565B CN 201810200253 A CN201810200253 A CN 201810200253A CN 108468565 B CN108468565 B CN 108468565B
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- filling
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- cloth liner
- baffle
- coal seam
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/06—Filling-up mechanically
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
- E21F15/04—Stowing mats; Goaf wire netting; Partition walls
Abstract
The invention discloses a nearly horizontal coal seam longwall fully mechanized mining cemented filling device and a method thereof, which are characterized by comprising the following steps: step 1), excavating a top filling gap, and installing near-horizontal coal seam long-wall fully-mechanized mining cemented filling equipment in the gap; step 2) clicking a lifting switch to lift a filling baffle plate to construct a sealed filling space; step 3) monitoring the state of the automatic flow hole; and 4) repeating the steps 1) to 3) until the filling operation of the whole nearly horizontal coal seam longwall fully-mechanized mining cemented filling working face is completed. The invention achieves the following beneficial effects: the invention effectively solves the problem of low roof contact rate of the nearly horizontal coal seam long-wall fully-mechanized mining cemented filling working face, not only does not increase pumping pressure, but also does not complicate the filling process, realizes the purposes of controlling movement of an overlying rock stratum and deformation of the earth surface and reducing the mining influence range, has the advantages of simple system operation, high automation degree, high coal resource recovery rate and filling efficiency and the like, and can meet the requirements of modern mines.
Description
Technical Field
The invention relates to nearly horizontal coal seam longwall fully mechanized mining cemented filling equipment and a method thereof, belonging to the technical field of coal mining.
Background
With the continuous development of the cemented filling technology, the cemented filling technology is relatively mature in the mining of medium-thickness, slowly-inclined and extremely-inclined coal seams in China, and the filling rate can reach over 90 percent. However, for the near-horizontal coal seam cemented filling, as the filling from a high position to a low position cannot be adopted as the inclined coal seam, a good filling self-closing area is formed, so that the filling slurry is filled in the goaf under the condition of self-flowing, and the near-horizontal coal seam cemented filling roof contact rate is lower. Aiming at the problems, the current domestic solution mainly comprises methods of selecting a reasonable filling port position, sectional filling of a goaf, controlling flow during filling and the like. However, these methods often require complicated operation processes and also greatly increase the filling cost. Therefore, how to improve the filling rate of the near-horizontal coal seam becomes a great difficult problem to be solved without increasing the cost and complicating the filling process.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide the nearly horizontal coal seam long wall fully-mechanized mining cemented filling equipment and the method thereof, and solve the problem of low roof contact rate of the nearly horizontal coal seam long wall fully-mechanized mining cemented filling working face.
In order to achieve the above object, the present invention adopts the following technical solutions:
A nearly horizontal coal seam longwall fully mechanized mining cemented filling device is characterized by comprising a filling part, a cemented filling hydraulic support and a coal mining machine which are sequentially connected; the filling part comprises a jack, a lifting column, a baffle, a conveying pipeline and a nozzle; the jack is used as a base of the filling part; the lifting column is vertically arranged on the jack; the baffle is positioned in the lifting column and is lifted in the lifting column through a lifting switch on the lifting column; the top of the baffle abuts against the top of the coal seam; a nozzle is arranged at the position close to the baffle; one end of the nozzle is connected with the conveying pipeline; and the upper part of the baffle is provided with an automatic flow hole.
The nearly horizontal coal seam longwall fully mechanized mining cemented filling equipment is characterized in that a baffle top cap is arranged at the top of the baffle and used for abutting against the top of the coal seam.
The nearly horizontal coal seam longwall fully mechanized mining cemented filling equipment is characterized in that an inter-frame laying cloth mounting frame is arranged on the baffle; the inter-frame cloth liner mounting frame is provided with inter-frame cloth liners; the baffle is provided with an inter-frame cloth liner window; one end of the cloth liner between the frames is located below the nozzle through a cloth liner window between the frames, and the cloth liner mounting frames between the frames are respectively distributed at gaps at two sides of the baffle.
The nearly horizontal coal seam long wall fully mechanized mining cemented filling equipment is characterized in that the rotatable clamping rod has the characteristic of rotation, can rotate 90 degrees and fixes inter-frame laying cloth together with the inter-frame laying cloth mounting frame; one side of the cloth liner between the frames is fixed through a cloth liner mounting frame between the frames, the other side of the cloth liner is fixed through a rotatable clamping rod, the position of a dotted line in the figure is rotated, and one end of the rotatable clamping rod is fixed to the side of the cloth liner between the frames through rotation.
A filling method based on nearly horizontal coal seam longwall fully mechanized mining cemented filling equipment is characterized by comprising the following steps:
Step 1), excavating a top filling gap, and installing near-horizontal coal seam long-wall fully-mechanized mining cemented filling equipment in the gap;
Step 2) clicking a lifting switch to lift the filling baffle, laying a laying cloth and constructing a sealed filling space;
Step 3) monitoring the state of the tapping hole, and judging the situation of full roof contact;
Step 4), cyclic filling: and (4) repeating the steps 1) to 3) until the filling operation of the whole nearly horizontal coal seam longwall fully-mechanized mining cemented filling working face is completed.
The nearly horizontal coal seam longwall fully mechanized mining cemented filling method is characterized in that the concrete content of the step 1) is as follows: after a cemented filling hydraulic support, a coal mining machine and related equipment are erected on the cemented filling working face, the working face is mined, after a filling step is advanced on the working face, a filling gap is dug at a top plate at the rear part of the cemented filling hydraulic support, and therefore the cementing material nozzle is placed at a higher horizontal height.
The nearly horizontal coal seam longwall fully mechanized mining cemented filling method is characterized in that the concrete content of the step 2) is as follows: clicking a lifting switch to lift a filling baffle, installing inter-frame cloth liner on an inter-frame cloth liner installation frame, penetrating the inter-frame cloth liner out of an inter-frame cloth liner window, contacting a working face bottom plate and laying the inter-frame cloth liner at the bottom plate for 0.5m long, stopping the extension of the inter-frame cloth liner, and repeating the steps in sequence, so that the cemented filling hydraulic support of the whole working face is connected together, and a sealed filling space is formed by the cemented filling hydraulic support, the working face end head and the coal, rock and the filling body at the rear part.
The nearly horizontal coal seam longwall fully mechanized mining cemented filling method is characterized in that the concrete content of the step 3) is as follows: filling a goaf behind a cemented working face while mining coal, opening a cementing material nozzle to spray cementing materials into the goaf, checking whether the cementing materials flow out of a self-flow hole at the rear part of each cemented filling hydraulic support after filling for a period of time, continuing filling if no cementing materials flow out, closing the cementing material nozzle if the cementing materials flow out, lowering a filling baffle by clicking a lifting switch after the cementing materials are solidified, and starting a lagging jack to push the filling baffle to move the filling baffle.
The invention achieves the following beneficial effects: the method effectively solves the problem of low roof contact rate of the long-wall fully-mechanized cementing filling working face of the nearly horizontal coal seam, not only does not increase pumping pressure, but also does not complicate the filling process, realizes the purposes of controlling movement and surface deformation of the overlying strata and reducing the mining influence range, and is an ideal technology for mining the nearly horizontal coal seam under 'three-down' and special geological conditions; meanwhile, the mining method has the advantages of simple system operation, high automation degree, high coal resource recovery rate and filling efficiency and the like, and can meet the requirements of modern mines.
Drawings
FIG. 1 is a layout view of a near-horizontal coal seam longwall fully-mechanized mining cemented filling working face;
FIG. 2 is a front view of the fill stop;
FIG. 3 is an enlarged view of the filling gap;
The meaning of the reference symbols in the figures:
1-baffle, 2-nozzle, 3-inter-frame cloth liner, 4-conveying pipeline, 5-inter-frame cloth liner mounting rack, 6-rotatable clamping rod, 7-self-flowing hole, 8-top cap, 9-lifting switch, 10-cementing material, 11-cementing filling hydraulic support, 12-coal mining machine, 13-filling gap, 14-connecting hose, 15-inter-frame cloth liner window and 16-lagging jack.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The invention discloses a nearly horizontal coal seam longwall fully mechanized mining cemented filling method which comprises the following steps: the method comprises the following specific steps:
Step 1) excavating a top filling gap: after a cemented filling hydraulic support 11, a coal mining machine 12 and related equipment are erected on a cemented filling working surface, the working surface is mined, every three cemented filling hydraulic supports 11 form one group, after the working surface advances a filling step distance, a filling gap 13 is dug in a rear top plate of each group of cemented filling hydraulic supports 11, and a cemented material nozzle 2 is placed in the filling gap 13, so that the cemented material nozzle 2 is placed at a higher horizontal height;
Step 2) constructing a sealed filling space: clicking a lifting switch 9 to lift the filling baffle 1, installing inter-frame cloth liner 3 on an inter-frame cloth liner installation frame 5, enabling the inter-frame cloth liner 3 to penetrate out of an inter-frame cloth liner window 15, stopping the extension of the inter-frame cloth liner 3 when the inter-frame cloth liner 3 contacts a bottom plate of a working face and is laid on the bottom plate for 0.5m, and so on, connecting a cemented filling hydraulic support 11 of the whole working face together to form a sealed filling space with the end head of the working face and the coal, rock and filling body at the rear part;
Step 3), monitoring the full roof contact condition: filling a goaf behind a cemented working face while mining coal, opening a cementing material nozzle 2, spraying cementing materials 10 into the goaf, after filling for a period of time, checking whether the cementing materials 10 flow out of an automatic flow hole 7 at the rear part of each cemented filling hydraulic support 11, continuing filling if no cementing materials 10 flow out, closing the cementing material nozzle 2 if the cementing materials 10 flow out, and after the cementing materials 10 are solidified, clicking a lifting switch 9 to lower a filling baffle 1, and starting a lagging jack 16 to push the filling baffle 1;
Step 4), cyclic filling: and (4) repeating the steps 1) to 3) until the filling operation of the whole nearly horizontal coal seam longwall fully-mechanized mining cemented filling working face is completed.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (3)
1. A nearly horizontal coal seam longwall fully mechanized mining cemented filling device is characterized by comprising a filling part, a cemented filling hydraulic support and a coal mining machine which are sequentially connected;
The filling part comprises a jack, a lifting column, a baffle, a conveying pipeline, a nozzle and a rotatable clamping rod; the jack is used as a base of the filling part; the lifting column is vertically arranged on the jack; the baffle is positioned in the lifting column and is lifted in the lifting column through a lifting switch on the lifting column; the top of the baffle abuts against the top of the coal seam; a filling gap is dug in the top plate at the top of the baffle, and a nozzle is arranged in the filling gap; one end of the nozzle is connected with the conveying pipeline; the upper part of the baffle is provided with an automatic flow hole;
The baffle is provided with an inter-frame cloth liner mounting frame; the inter-frame cloth liner mounting frame is provided with inter-frame cloth liners; the baffle is provided with an inter-frame cloth liner window; one end of the inter-frame cloth liner is positioned below the nozzle through the inter-frame cloth liner window, and the inter-frame cloth liner mounting frame are respectively distributed at gaps at two sides of the baffle;
The rotatable clamping rod has the characteristic of rotation, can rotate 90 degrees and fixes inter-frame cloth liner together with the inter-frame cloth liner mounting frame; one side of the cloth liner between the frames is fixed through a cloth liner mounting frame between the frames, the other side of the cloth liner is fixed through a rotatable clamping rod, and one end of the rotatable clamping rod is fixed through rotation to the side of the cloth liner between the frames.
2. The nearly horizontal coal seam longwall fully mechanized mining cemented filling equipment of claim 1, wherein a top cap of the baffle is provided at the top of the baffle for abutting against the top of the coal seam.
3. The filling method of the nearly horizontal coal seam longwall fully mechanized mining cemented filling equipment based on any one of claims 1 to 2 is characterized by comprising the following steps:
Step 1) excavation top filling gap, will be nearly horizontal coal seam longwall fully mechanized mining cemented filling equipment to install wherein, specifically include: after a cemented filling hydraulic support, a coal mining machine and related equipment are erected on a cemented filling working surface, the working surface is mined, after a filling step is advanced on the working surface, a filling gap is dug at a top plate at the rear part of the cemented filling hydraulic support, and therefore a cementing material nozzle is placed at a higher horizontal height;
Step 2) clicking a lifting switch to lift the filling baffle, laying a cloth liner, and constructing a sealed filling space, which specifically comprises the following steps: clicking a lifting switch to lift the filling baffle, installing inter-frame cloth liner on an inter-frame cloth liner installation frame, enabling the inter-frame cloth liner to penetrate out of an inter-frame cloth liner window, stopping the extension of the inter-frame cloth liner when the inter-frame cloth liner contacts a bottom plate of the working face and is laid on the bottom plate for 0.5m long, and so on in sequence, connecting the cemented filling hydraulic support of the whole working face together, and forming a sealed filling space with the end head of the working face and the coal, rock and filling body at the rear part;
Step 3) monitoring the state of the flowing hole, judging that the flowing hole is full of the roof contacting condition, and specifically comprising the following steps: filling a goaf behind a cemented working face while mining coal, opening a cementing material nozzle to spray cementing materials into the goaf, checking whether the cementing materials flow out of a self-flow hole at the rear part of each cemented filling hydraulic support after filling for a period of time, continuing filling if no cementing materials flow out, closing the cementing material nozzle if the cementing materials flow out, lowering a filling baffle by clicking a lifting switch after the cementing materials are solidified, and starting a lagging jack to push the filling baffle;
Step 4), cyclic filling: and (4) repeating the steps 1) to 3) until the filling operation of the whole nearly horizontal coal seam longwall fully-mechanized mining cemented filling working face is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810200253.1A CN108468565B (en) | 2018-03-12 | 2018-03-12 | Nearly horizontal coal seam long wall fully mechanized mining cemented filling equipment and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810200253.1A CN108468565B (en) | 2018-03-12 | 2018-03-12 | Nearly horizontal coal seam long wall fully mechanized mining cemented filling equipment and method thereof |
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| CN108468565A CN108468565A (en) | 2018-08-31 |
| CN108468565B true CN108468565B (en) | 2020-07-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202557970U (en) * | 2012-04-06 | 2012-11-28 | 陕西开拓建筑科技有限公司 | Multi-room mine goaf filling string bag |
| CN102606207A (en) * | 2012-04-06 | 2012-07-25 | 陕西开拓建筑科技有限公司 | Mine gob filling and entry retaining device system and filling method |
| CN202596762U (en) * | 2012-05-17 | 2012-12-12 | 沈阳天安矿山机械科技有限公司 | Baffle-type filling hydraulic bracket |
| CN203114338U (en) * | 2013-03-27 | 2013-08-07 | 北京辉越景新矿山支护设备有限公司 | Supporting equipment for filling |
| CN103306697A (en) * | 2013-06-07 | 2013-09-18 | 山东新煤机械装备股份有限公司 | Three-column paste body filling hydraulic bracket for underground thin coal seam and four-step paste body filling process |
| CN103437792B (en) * | 2013-09-13 | 2016-12-07 | 陕西中能煤田有限公司 | Filling sealing device and placement method thereof |
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