CN105971607A - Method for gob-side entry retaining of medium-thickness coal seam - Google Patents
Method for gob-side entry retaining of medium-thickness coal seam Download PDFInfo
- Publication number
- CN105971607A CN105971607A CN201610335849.3A CN201610335849A CN105971607A CN 105971607 A CN105971607 A CN 105971607A CN 201610335849 A CN201610335849 A CN 201610335849A CN 105971607 A CN105971607 A CN 105971607A
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- Prior art keywords
- gob
- support
- entry retaining
- medium
- side entry
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000003245 coal Substances 0.000 title abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 9
- 230000008901 benefit Effects 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract 1
- 230000032258 transport Effects 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 206010068052 Mosaicism Diseases 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000003765 sex chromosome Anatomy 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/06—Transport of mined material at or adjacent to the working face
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Remote Sensing (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to a method for gob-side entry retaining of a medium-thickness coal seam and belongs to the technical field of gob-side entry retaining. The method is characterized in that by taking the advantage of large space of a working face of the medium-thickness coal seam, part of a support of the working face on the gob-side entry retaining side is changed into a top coal caving support and a long tail beam support, and a scraper conveyor, a transfer crusher, a transfer belt conveyor and a downward-spreading conveyor are arranged behind the supports on the working face; and in the working face propelling process, the top coal caving support is directly adopted for conveying gangue above a gob downwards, the downwards-conveyed gangue is downwards spread to the gob area on the gob-side entry retaining side to form a beside-entry support after the procedures of conveying, crushing, transferring and downward spreading, and the whole process is carried out in the gob area. Meanwhile, before the gangue is stacked, flexible protecting plates with holes are adopted for separation in advance so as to adapt to roof settling and prevent the gangue from entering an entry, cementing material filling and reinforcing are carried out, and the flexible protecting plates with the holes can be recycled. The method has important significance to guarantee of the gob-side entry retaining stability, increase of the resource recovery rate and simplifying of a beside-entry support process.
Description
Technical field
The invention belongs to edge air gallery technology field, more particularly to a kind of directly carry out in goaf the transferring of spoil, transport, transport, under raise operation, the Gangue raised under utilization is built into the gob-side entry retaining method of roadside support.
Background technology
Gob side entry retaining coal-mining method has significant effect to aspects such as improving resource recovery, reduction tunnelling rate, alleviation digging tight relationship, compare girdle gob side entry retaining, the gob side entry retaining of medium-thickness seam stay lane difficulty generally the biggest, ore deposit pressure manifests the most violent, and cost-effective roadside support is always difficult point and the key of medium-thickness seam edge air gallery technology.For problems, scientific research both at home and abroad and engineering staff propose many effective correlation techniques, such as spoil pack pile, close standing props, cementing material filling etc., achieve the gob side entry retaining of medium-thickness seam to a certain extent, but typically all spend huge, and be difficult to thoroughly solve to stay lane adjoining rock stability sex chromosome mosaicism and roadside support seal problem.The present invention recommends a kind of medium-thickness seam gob-side entry retaining method, directly carry out in goaf the transferring of spoil, transport, transport, under the operation such as raise, the Gangue raised under utilization is built into roadside support, and roadside support done strengthen, encapsulation process, gob side entry retaining stability is ensured, resource recovery improves and the simplification of roadside support technique is significant.
Summary of the invention
It is an object of the invention to provide a kind of medium-thickness seam gob-side entry retaining method, directly carry out in goaf the transferring of spoil, transport, transport, under the operation such as raise, the Gangue raised under utilization is built into roadside support, and whole process is all carried out in goaf, and spoil is without gug or carries out extra process.
Its technical problem of the present invention be the technical scheme is that
A kind of medium-thickness seam gob-side entry retaining method, utilize the advantage that medium-thickness seam work surface space is big, first Liu Xiang side face sub-stent is changed into sublevel caving hydrau lic support and long-tail boom support, and drag conveyor is arranged at force piece rear, reprint disintegrating machine, transhipment belt conveyor, under raise conveyer, during the advance of the face, sublevel caving hydrau lic support is directly used to be transferred by above goaf spoil, transport through drag conveyor, reprint crusher in crushing, transhipment belt conveyor is transported to down raise conveyer, under raise conveyer by goaf, side, rock Xia Yangzhiliu lane formed roadside support, whole process is all carried out in goaf.Wherein, conveyor lengths can be raised under determining according to roadway support width, and then determine long-tail boom support quantity, according to high-volume determining sublevel caving hydrau lic support quantity and drag conveyor length under spoil.
A kind of medium-thickness seam gob-side entry retaining method, the reprinting disintegrating machine used, transhipment belt conveyor, under raise conveyer and be respectively positioned on below long-tail boom support tail boom, and under raise conveyer and be suspended to long-tail boom support tail boom, it is ensured that enough roadside support height.
A kind of medium-thickness seam gob-side entry retaining method, hydraulic prop and flexible backplate is installed in Xiang Bang position, side, Liu Xiang goaf, to adapt to crush and prevent spoil from sealing in stay lane, simultaneously, its flexible backplate is provided with hole, injects cemented filling material by the hole of band hole flexibility backplate to Gangue, it is achieved the reinforcing of roadside support, sealing, after cemented filling material solidifies, hydraulic prop can be removed and be circulated use with band hole flexibility backplate.
Beneficial effects of the present invention:
1. low cost: required roadside packing aggregate is the spoil obtained on the spot, it is not necessary to extra filling aggregate, roadside packing device；Meanwhile, whole process is all carried out in goaf, and spoil without gug or additionally transports, and simplifies roadside support technique.
2. supporting effect is good: roadside support width manifests the factors such as severe degree and freely designs according to staying lane height, Liu Xiang ore deposit pressure, it is ensured that stay the surrounding rock stability in lane.
3. support efficiency is high: whole roadside support process all advances with coal-face and synchronization carries out, reprint disintegrating machine, transport belt conveyor, under raise the equipment needed therebies such as conveyer and move with working surface hydraulic support simultaneously, noiseless to coal mining.
4. safety is good: spoil can inject cemented filling material during piling up in real time, it is achieved the airtight and reinforcing of gob side entry retaining roadside support, it is therefore prevented that water in gob area penetrates into tunnel, harmful 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, can more completely be more fully understood that the present invention and easily learn the beneficial effect that many of which is adjoint, but accompanying drawing described herein is used for providing a further understanding of the present invention, constitute the part of the present invention, the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention, wherein:
Fig. 1 is medium-thickness seam gob side entry retaining entirety top view.
Fig. 2 is method, apparatus profile after work surface.
Fig. 3 is to raise process profile under spoil.
Fig. 4 is band hole flexibility guard plate apparatus schematic diagram.
Fig. 5 is sublevel caving hydrau lic support and the schematic diagram of spoil transport below.
Detailed description of the invention
With reference to Fig. 1,2,3,4,5, the present invention will be described, a kind of medium-thickness seam gob-side entry retaining method, utilize the advantage that medium-thickness seam work surface space is big, first Liu Xiang side face sub-stent is changed into sublevel caving hydrau lic support 8 and long-tail boom support 6, and force piece rear arrange drag conveyor 2, reprint disintegrating machine 7, transhipment belt conveyor 5, under raise conveyer 3.During the advance of the face, sublevel caving hydrau lic support 8 is directly used to be transferred by spoil 11 above goaf 1, transport through drag conveyor 2, reprint that disintegrating machine 7 is broken, transhipment belt conveyor 5 is transported to down raise conveyer 3, under raise conveyer 3 goaf, side, rock 11 Xia Yangzhiliu lane 1 formed roadside support 4, whole process is all carried out in goaf 1.Wherein, conveyer 3 length can be raised under determining according to roadway support width, and then determine long-tail boom support 6 quantity, high-volume determine sublevel caving hydrau lic support 8 quantity and drag conveyor 2 length for 11 times according to spoil.
A kind of medium-thickness seam gob-side entry retaining method, the reprinting disintegrating machine 7 that used, transhipment belt conveyor 5, under raise conveyer 3 and be respectively positioned on below long-tail boom support 6 tail boom 13, raise conveyer 3 under and and be suspended to long-tail boom support 6 tail boom 13, it is ensured that enough roadside support 4 height.
A kind of medium-thickness seam gob-side entry retaining method, hydraulic prop 10 and flexible backplate 9 is installed in Xiang Bang position, side, Liu Xiang goaf 1, to adapt to crush and prevent spoil 11 from sealing in stay lane, simultaneously, its flexible backplate 9 is provided with hole 12, injects cemented filling material by the hole 12 of band hole flexibility backplate 9 to Gangue, it is achieved the reinforcing of roadside support 4, sealing, after cemented filling material solidifies, hydraulic prop 10 can be removed and be circulated use with band hole flexibility backplate 9.
The method has the advantages such as low cost, supporting effect is good, support efficiency is high, safety is good, and to the guarantee of gob side entry retaining stability, resource recovery improves and the simplification of roadside support technique is significant.
Above example is to make those of ordinary skill in the art understand the present invention; and the detailed description that the present invention is carried out; but it is contemplated that; can also make other changes and modifications in the range of the claim without departing from the present invention is contained, these change and modifications the most within the scope of the present invention.
Claims (3)
1. a medium-thickness seam gob-side entry retaining method, it is characterized in that the advantage utilizing medium-thickness seam work surface space big, change Liu Xiang side face sub-stent into sublevel caving hydrau lic support and long-tail boom support, and drag conveyor is arranged at force piece rear, reprint disintegrating machine, transhipment belt conveyor, under raise conveyer, during the advance of the face, sublevel caving hydrau lic support is directly used to be transferred by above goaf spoil, transport through drag conveyor, reprint crusher in crushing, transhipment belt conveyor is transported to down raise conveyer, under raise conveyer by goaf, side, rock Xia Yangzhiliu lane formed roadside support, whole process is all carried out in goaf.
A kind of medium-thickness seam gob-side entry retaining method the most according to claim 1, it is characterized in that reprinting disintegrating machine, transhipment belt conveyor, under raise conveyer and be respectively positioned on below long-tail boom support tail boom, raise conveyer under and and be suspended to long-tail boom support tail boom, it is ensured that enough roadside support height.
A kind of medium-thickness seam gob-side entry retaining method the most according to claim 1, it is characterized in that installing hydraulic prop and flexible backplate in Xiang Bang position, side, Liu Xiang goaf, to adapt to crush and prevent spoil from sealing in stay lane, simultaneously, its flexible backplate is provided with hole, cemented filling material is injected to Gangue by the hole of band hole flexibility backplate, realize the reinforcing of roadside support, sealing, after cemented filling material solidifies, hydraulic prop can be removed and be circulated use with band hole flexibility backplate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610335849.3A CN105971607A (en) | 2016-05-20 | 2016-05-20 | Method for gob-side entry retaining of medium-thickness coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610335849.3A CN105971607A (en) | 2016-05-20 | 2016-05-20 | Method for gob-side entry retaining of medium-thickness coal seam |
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|---|---|
| CN105971607A true CN105971607A (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610335849.3A Pending CN105971607A (en) | 2016-05-20 | 2016-05-20 | Method for gob-side entry retaining of medium-thickness coal seam |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387083A (en) * | 2017-09-15 | 2017-11-24 | 中国矿业大学 | A kind of medium-thickness seam gob side entry retaining roadside support body construction method supported using spoil |
| CN107575228A (en) * | 2017-09-15 | 2018-01-12 | 中国矿业大学 | A kind of coal-mining method for reducing double lane protection pillar sizes and reducing roadway deformation amount |
| CN111271098A (en) * | 2020-01-16 | 2020-06-12 | 国家能源集团宁夏煤业有限责任公司 | Construction method for gob-side entry retaining under metal false roof beside coal pillar |
| CN112112672A (en) * | 2020-09-22 | 2020-12-22 | 中国矿业大学 | Gob-side entry retaining roadside support body construction method based on gangue cement-based material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2407340A1 (en) * | 1977-10-28 | 1979-05-25 | Gewerk Eisenhuette Westfalia | Mine gallery support for material stowing - has shield members between floor and roof members adjusted to contour of material |
| CN1936271A (en) * | 2006-08-21 | 2007-03-28 | 山东盛泉矿业有限公司 | Method for filling coal-steam-free extraction working surface goaf by coal mine waste rock |
| CN103388488A (en) * | 2013-08-21 | 2013-11-13 | 大同煤矿集团有限责任公司 | Thin seam gob-side entry retaining filling method |
| 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 |
| CN104453994A (en) * | 2014-11-18 | 2015-03-25 | 中国矿业大学(北京) | Gob-side entry retaining method for putting top waste rock down to achieve roadway side packing |
-
2016
- 2016-05-20 CN CN201610335849.3A patent/CN105971607A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2407340A1 (en) * | 1977-10-28 | 1979-05-25 | Gewerk Eisenhuette Westfalia | Mine gallery support for material stowing - has shield members between floor and roof members adjusted to contour of material |
| CN1936271A (en) * | 2006-08-21 | 2007-03-28 | 山东盛泉矿业有限公司 | Method for filling coal-steam-free extraction working surface goaf by coal mine waste rock |
| CN103388488A (en) * | 2013-08-21 | 2013-11-13 | 大同煤矿集团有限责任公司 | Thin seam gob-side entry retaining filling method |
| 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 |
| CN104453994A (en) * | 2014-11-18 | 2015-03-25 | 中国矿业大学(北京) | Gob-side entry retaining method for putting top waste rock down to achieve roadway side packing |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387083A (en) * | 2017-09-15 | 2017-11-24 | 中国矿业大学 | A kind of medium-thickness seam gob side entry retaining roadside support body construction method supported using spoil |
| CN107575228A (en) * | 2017-09-15 | 2018-01-12 | 中国矿业大学 | A kind of coal-mining method for reducing double lane protection pillar sizes and reducing roadway deformation amount |
| CN111271098A (en) * | 2020-01-16 | 2020-06-12 | 国家能源集团宁夏煤业有限责任公司 | Construction method for gob-side entry retaining under metal false roof beside coal pillar |
| CN111271098B (en) * | 2020-01-16 | 2021-06-08 | 国家能源集团宁夏煤业有限责任公司 | Construction method for gob-side entry retaining under metal false roof beside coal pillar |
| CN112112672A (en) * | 2020-09-22 | 2020-12-22 | 中国矿业大学 | Gob-side entry retaining roadside support body construction method based on gangue cement-based material |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160928 |
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| RJ01 | Rejection of invention patent application after publication |