CN104453994A - Gob-side entry retaining method for putting top waste rock down to achieve roadway side packing - Google Patents

Gob-side entry retaining method for putting top waste rock down to achieve roadway side packing Download PDF

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Publication number
CN104453994A
CN104453994A CN201410655453.8A CN201410655453A CN104453994A CN 104453994 A CN104453994 A CN 104453994A CN 201410655453 A CN201410655453 A CN 201410655453A CN 104453994 A CN104453994 A CN 104453994A
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CN
China
Prior art keywords
spoil
support
caving
gob
entry retaining
Prior art date
Application number
CN201410655453.8A
Other languages
Chinese (zh)
Inventor
王家臣
马念杰
赵志强
贾后省
杨宝贵
杨胜利
刘洪涛
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中国矿业大学(北京)
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Application filed by 中国矿业大学(北京) filed Critical 中国矿业大学(北京)
Priority to CN201410655453.8A priority Critical patent/CN104453994A/en
Publication of CN104453994A publication Critical patent/CN104453994A/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00Methods or devices for placing filling-up materials in underground workings

Abstract

The invention relates to a gob-side entry retaining method for putting top waste rock down to achieve roadway side packing. The method is mainly applied to the gob-side entry retaining technical field. In the advancing process of a working face, a top coal caving support is directly adopted to put waste rack above a goaf down, the waste rock is transported to the end of the working face and is simply crushed, transferred and transported back, the processed waste rock is stacked, the goaf on one side of a retained roadway is filled with the processed waste rock to form a waste rock wall serving as a roadway side support, and a rear top beam is arranged at the position, needing roadway side packing, of hydraulic supports of the working face, so that a waste rock back transportation device is conveniently installed and the waste rock is stacked to the enough height. Meanwhile, when the waste rock is stacked or after the waste rock is stacked, cemented filling materials are sprayed to the stacking position of the waste rock to achieve airtightness and reinforcement along the roadway side support of the gob-side entry retaining. The method is of great importance in ensuring gob-side entry retaining stability of the thick seam working face, especially the fully mechanized caving face, improving the resource recovery rate and simplifying the roadway side support process.

Description

A kind of caving cash roadside packing gob-side entry retaining method

Technical field

The invention belongs to edge air gallery technology field, relate to specifically and a kind of directly above goaf spoil to be put down, through transporting, broken, reprint, backhaul, make spoil accumulation, the cementing gob-side entry retaining method serving as roadside support.

Background technology

Gob side entry retaining coal-mining method is a major reform of coal-mining method, it to raising resource recovery, reduce tunnel Denver Nuggets rate, alleviate the aspects such as digging tight relationship and have significant effect, the Anti-air-leakage problem of side, Liu Xiang goaf roadside support easily and effectively and this lane, side side is difficult point and the key of edge air gallery technology always.For problems, domestic and international scientific research and engineering staff propose many effective Method and Technology, but still there are some problems, in roadside support, when girdle gob side entry retaining, because movement is relatively mild, through specific aim supporting, roadway support problem still can effectively be solved, and during to top-coal caving face and full-mechanized mining face in thick coal seam gob side entry retaining, need cost great cost to carry out roadside support, nonetheless, be also difficult to thoroughly solve the adjoining rock stability sex chromosome mosaicism staying lane.The present invention recommends a kind of caving cash roadside packing gob-side entry retaining method, along with the propelling of work plane, the spoil directly utilizing goaf to put down serves as roadside support, and the roadside support that spoil accumulation is formed is sealed and consolidation process, the gob side entry retaining stability for high seam work plane especially fully mechanized coal face ensures, resource recovery improves and the simplification of roadside support technique is significant.

Summary of the invention

The object of this invention is to provide a kind of caving cash roadside packing gob-side entry retaining method, above goaf spoil directly puts down by the method, through transporting, broken, reprint, backhaul, spoil is piled up the goaf being filled in Liu Xiang side, serve as roadside support, spoil is without the need to gug or carry out extra process.

The technical scheme that its technical problem of the present invention adopts is:

A kind of caving cash roadside packing gob-side entry retaining method, in advance of the face process, above goaf spoil puts down by direct employing sublevel caving hydrau lic support, be transported to face end, through Simple pulverizing, reprint the goaf of backhauling Liu Xiang side, spoil after process is piled up and is filled in the goaf of Liu Xiang side, form pack wall and serve as roadside support, its whole process and coal-winning machine coal cutting are synchronously carried out.The working surface hydraulic support of roadside packing position is needed to be provided with rearmounted back timber, so that installation spoil backhauls device and realizes the spoil accumulation of enough height.Before carrying out spoil accumulation, install hydraulic prop and baffle plate in Xiang Bang position, side, Liu Xiang goaf, prevent spoil from sealing in and stay lane, ensure the safety in spoil banking process Zhong Liu lane, after cemented filling material to be sprayed solidifies, hydraulic prop can be removed and baffle plate recycles; In spoil banking process or after spoil accumulation, by the cemented filling material flusher that 1 ~ 3, the Liu Xiang side rearmounted back timber of working surface hydraulic support is provided with, the cemented filling material carrying out spoil accumulation place sprays, to improve compaction rate and the bulk strength of pack wall, realize the airtight of gob side entry retaining roadside support and reinforce.

A kind of caving cash roadside packing gob-side entry retaining method, when top coal caving, can carry out excessively putting coal, after the coal put down and the spoil carried secretly thereof are transported to face end, carry out coal to be separated with spoil, the coal after separation directly transports rear gug, and the spoil after separation then backhauls the goaf to Liu Xiang side, make the spoil after process pile up the goaf being filled in Liu Xiang side, form pack wall and serve as roadside support.Do not possessing the mine installing coal and waste rock separation device condition, work plane also can be waited to put after coal operation completes, the transport of coal is put in power cut-off face, opens spoil fragmentation, conveying device, spoil is backhauled the goaf to Liu Xiang side, carry out roadside support.

A kind of caving cash roadside packing gob-side entry retaining method, when carrying out common fully-mechanized mining, working surface hydraulic support is changed into sublevel caving hydrau lic support, the working surface hydraulic support of roadside packing position is needed to change into the hydraulic support being provided with rearmounted back timber, then in advance of the face process, above goaf spoil puts down by direct employing sublevel caving hydrau lic support, be transported to face end, through Simple pulverizing, reprint the goaf of backhauling Liu Xiang side, make the spoil after process pile up the goaf being filled in Liu Xiang side, form pack wall and serve as roadside support.

Beneficial effect of the present invention:

1. this kind of caving cash roadside packing gob-side entry retaining method, spoil is gug not, without the need to special roadside packing device, only need certain spoil fragmentation, haulage device, make spoil natural packing in the goaf of Liu Xiang side, form pack wall, do not need extra filling aggregate, simplify roadside support technique;

2. this kind of caving cash roadside packing gob-side entry retaining method, when top-coal caving face is applied, can carry out excessively putting coal, significantly improve resource recovery, and original sublevel caving hydrau lic support can be made full use of, while not affecting normal production, improve utilization rate of equipment and installations;

3. this kind of caving cash roadside packing gob-side entry retaining method, the width of pack wall can according to staying lane height, Liu Xiang ore deposit pressure manifests the factors such as severe degree and freely designs, and ensure that the surrounding rock stability staying lane;

4. this kind of caving cash roadside packing gob-side entry retaining method, cemented filling material in spoil banking process or after spoil accumulation sprays, realize the airtight of gob side entry retaining roadside support and reinforce, preventing water in gob area infiltration tunnel, pernicious gas seals in tunnel and spontaneous combustion of remaining coal threatens mine safety.

Accompanying drawing explanation

When considered in conjunction with the accompanying drawings, by referring to detailed description below, more completely can understand the present invention better and easily learn wherein many adjoint beneficial effects, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention, wherein.

Fig. 1 is the overall top view of caving cash roadside packing gob side entry retaining.

Fig. 2 be caving cash transport, broken, reprint, backhaul sectional drawing.

Fig. 3 is caving cash roadside packing process sectional drawing.

Fig. 4 is spoil tilting device schematic diagram.

Fig. 5 is sublevel caving hydrau lic support structural representation.

Detailed description of the invention

Embodiment one

With reference to Fig. 1, 2, 3, 4, 5 pairs of embodiments of the invention one are described, when carrying out top coal caving, first hydraulic prop 14 and baffle plate 15 is installed in Xiang Bang position, side, Liu Xiang goaf, prevent spoil from sealing in and stay lane, in upper curtate advance of the face process, put after coal operation completes until work plane, terminate the transport of putting coal, direct subsequently above goaf spoil to be put down by sublevel caving hydrau lic support 1, face end is transported to through rearmounted drag conveyor 20, through rearmounted elevating conveyor 12, connection transportation machine 6, preposition elevating conveyor 11, be transported to crushing engine 10, spoil is through Simple pulverizing, excessively reprint to conveyer 7 to side elevating conveyor 8, then arrive the suspention drag conveyor 5 being suspended to the rearmounted back timber 13 of working surface hydraulic support 2, through spoil tilting device 17, the spoil after process is constantly toppled over again, until spoil is stacked into maximum height, form pack wall 4 and serve as roadside support.Wherein spoil tilting device 17 is made up of hydraulic jack 19 and shovel board 18, and hydraulic jack 19 post periodic elongation alive, acts on shovel board 18, and above realization suspention drag conveyor 5, spoil constantly topples over.

In spoil banking process or after spoil accumulation, by the cemented filling material flusher 16 that 1 ~ 3, the Liu Xiang side rearmounted back timber 13 of working surface hydraulic support 2 is provided with, the cemented filling material 3 carrying out spoil accumulation place sprays, to improve compaction rate and the bulk strength of pack wall, realize the airtight of gob side entry retaining roadside support and reinforce, its cemented filling material flusher 16 is positioned at working surface hydraulic support 2 rearmounted back timber 13 side, is sandwiched between two working surface hydraulic supports 2.

Above-mentioned whole process and coal-winning machine coal cutting are synchronously carried out, and preposition elevating conveyor 11 in process, crushing engine 10, main fortune adhesive tape conveyor 9 mainly bear fragmentation and the transport of coal-winning machine coal cutting.

Embodiment two

With reference to Fig. 1, 2, 3, 4, 5 pairs of embodiments of the invention two are described, for possessing the mine installing coal and waste rock separation device condition, when top coal caving, first hydraulic prop 14 and baffle plate 15 is installed in Xiang Bang position, side, Liu Xiang goaf, prevent spoil from sealing in and stay lane, in upper curtate advance of the face process, adopt excessive mode of putting coal, through rearmounted drag conveyor 20, rearmounted elevating conveyor 12, connection transportation machine 6, preposition elevating conveyor 11, be transported to coal-gangue separation device 21, coal after separation is gug after main fortune adhesive tape conveyor 9 directly transports, spoil after separation then backhauls the goaf to Liu Xiang side, the spoil after process is made to pile up the goaf being filled in Liu Xiang side, form pack wall and serve as roadside support.Its spoil backhauls, banking process is identical with embodiment one.Need the cemented filling material 3 carrying out spoil accumulation place to spray in spoil banking process or after spoil accumulation, its sprinkling process is also identical with embodiment one.

Embodiment three

With reference to Fig. 1, 2, 3, 4, 5 pairs of embodiments of the invention three are described, when carrying out common fully-mechanized mining, working surface hydraulic support is changed into sublevel caving hydrau lic support 1, need the working surface hydraulic support of roadside packing position to change into be provided with the hydraulic support 2 of rearmounted back timber, then in upper curtate advance of the face process, above goaf spoil puts down by direct employing sublevel caving hydrau lic support, be transported to face end, through Simple pulverizing, reprint the goaf of backhauling Liu Xiang side, the spoil after process is made to pile up the goaf being filled in Liu Xiang side, form pack wall and serve as roadside support.Above-mentioned involved spoil transports, broken, backhaul, banking process is identical with embodiment one.Need the cemented filling material 3 carrying out spoil accumulation place to spray in spoil banking process or after spoil accumulation, its sprinkling process is also identical with embodiment one.

Above embodiment is to make those of ordinary skill in the art understand the present invention; and to the detailed description that the present invention carries out; but can expect; not departing from the scope that claim of the present invention contains and can also make other changes and modifications, these changes and amendment are all in protection scope of the present invention.

Claims (6)

1. a caving cash roadside packing gob-side entry retaining method, it is characterized in that in advance of the face process, above goaf spoil puts down by direct employing sublevel caving hydrau lic support, be transported to face end, through Simple pulverizing, reprint and backhaul, make the spoil after process pile up the goaf being filled in Liu Xiang side, form pack wall and serve as roadside support.
2. a kind of caving cash roadside packing gob-side entry retaining method according to claim 1, it is characterized in that when top coal caving, can carry out excessively putting coal, after the coal put down and the spoil carried secretly thereof are transported to face end, carry out coal to be separated with spoil, coal after separation directly transports rear gug, and the spoil after separation then backhauls the goaf to Liu Xiang side, carries out roadside support.
3. a kind of caving cash roadside packing gob-side entry retaining method according to claim 1, when it is characterized in that carrying out the exploitation of non-top-coal caving face, working surface hydraulic support is changed into sublevel caving hydrau lic support, the working surface hydraulic support of roadside packing position is needed to change into the hydraulic support being provided with rearmounted back timber, then in advance of the face process, above goaf spoil puts down by direct employing sublevel caving hydrau lic support, be transported to face end, through Simple pulverizing, reprint the goaf of backhauling Liu Xiang side, carry out roadside support.
4. a kind of caving cash roadside packing gob-side entry retaining method according to claim 1, is characterized in that needing the working surface hydraulic support of roadside packing position to be provided with rearmounted back timber, so that installation spoil backhauls device and realizes the spoil accumulation of enough height.
5. a kind of caving cash roadside packing gob-side entry retaining method according to claim 1, it is characterized in that the rearmounted back timber of 1 ~ 3 working surface hydraulic support in Liu Xiang side is provided with cemented filling material flusher, after spoil is piled up or in spoil banking process, by spraying cemented filling material to spoil accumulation place, realizing the airtight of gob side entry retaining roadside support and reinforcing.
6. a kind of caving cash roadside packing gob-side entry retaining method according to claim 1, it is characterized in that before spoil is piled up, hydraulic prop and baffle plate is installed in Xiang Bang position, side, Liu Xiang goaf, prevent spoil from sealing in and stay lane, ensure the safety in spoil banking process Zhong Liu lane, after cemented filling material to be sprayed solidifies, hydraulic prop can be removed and baffle plate recycles.
CN201410655453.8A 2014-11-18 2014-11-18 Gob-side entry retaining method for putting top waste rock down to achieve roadway side packing CN104453994A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104879162A (en) * 2015-05-29 2015-09-02 中国矿业大学(北京) Reasonable gangue dropping and gob-side entry retaining method of top coal caving face
CN105604552A (en) * 2015-12-21 2016-05-25 冀中能源集团有限责任公司 Solid material filling mining gob side entry retaining method
CN105971607A (en) * 2016-05-20 2016-09-28 河南理工大学 Method for gob-side entry retaining of medium-thickness coal seam
CN109505649A (en) * 2018-10-24 2019-03-22 太原理工大学 A method of alleviating gob side entry retaining road-in packing deformation failure

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CN101265808A (en) * 2008-04-16 2008-09-17 刘兴才 Coal mine conjuncted asynchronous bracket filled block wall
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CN102865099A (en) * 2012-08-29 2013-01-09 山西晋煤集团金鼎煤机矿业有限责任公司 Under-building, under-railway and under-water mining filling process
CN104018837A (en) * 2014-06-20 2014-09-03 中国矿业大学 Spacing-filling gob-side entry retaining method for treating dinting gangue

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101265808A (en) * 2008-04-16 2008-09-17 刘兴才 Coal mine conjuncted asynchronous bracket filled block wall
CN101509395A (en) * 2009-03-16 2009-08-19 太原理工大学 The roof caving and tunnel protecting method
CN101586460A (en) * 2009-06-02 2009-11-25 中国矿业大学 Coal mining solid filling method
CN102128051A (en) * 2011-03-11 2011-07-20 中国矿业大学 Method for filling gob area with attal in coal mine underhole
CN102287211A (en) * 2011-05-06 2011-12-21 中煤北京煤矿机械有限责任公司 Gob roadway end part hydraulic support frame and gob roadway coal mining method thereof
CN102383857A (en) * 2011-07-05 2012-03-21 徐州贝壳迈宁矿业科技有限公司 Gob-side entry retaining process for solid-filling, coal-mining and laying gangue wall
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CN102865099A (en) * 2012-08-29 2013-01-09 山西晋煤集团金鼎煤机矿业有限责任公司 Under-building, under-railway and under-water mining filling process
CN104018837A (en) * 2014-06-20 2014-09-03 中国矿业大学 Spacing-filling gob-side entry retaining method for treating dinting gangue

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104879162A (en) * 2015-05-29 2015-09-02 中国矿业大学(北京) Reasonable gangue dropping and gob-side entry retaining method of top coal caving face
CN105604552A (en) * 2015-12-21 2016-05-25 冀中能源集团有限责任公司 Solid material filling mining gob side entry retaining method
CN105971607A (en) * 2016-05-20 2016-09-28 河南理工大学 Method for gob-side entry retaining of medium-thickness coal seam
CN109505649A (en) * 2018-10-24 2019-03-22 太原理工大学 A method of alleviating gob side entry retaining road-in packing deformation failure

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