CN113669060B - H-shaped coal face stoping roadway arrangement method - Google Patents
H-shaped coal face stoping roadway arrangement method Download PDFInfo
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- CN113669060B CN113669060B CN202111077072.2A CN202111077072A CN113669060B CN 113669060 B CN113669060 B CN 113669060B CN 202111077072 A CN202111077072 A CN 202111077072A CN 113669060 B CN113669060 B CN 113669060B
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- 239000003245 coal Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005065 mining Methods 0.000 claims abstract description 37
- 238000012423 maintenance Methods 0.000 claims abstract description 6
- 230000005641 tunneling Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000011435 rock Substances 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- 230000009191 jumping Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- 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
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses a method for arranging a mining roadway of an H-shaped coal face. Is suitable for underground coal mine. And after the middle connecting roadway is tunneled to the roadway protection narrow coal pillar of the current stoping working face, after the stoping of the current stoping working face is finished and the goaf is stable, the end part of the middle connecting roadway is tunneled along the upper and lower directions of the roadway protection narrow coal pillar simultaneously to form a same return airway. The method avoids secondary forced mining influence, can remarkably reduce the deformation of surrounding rocks of a stoping roadway, reduces the maintenance cost of the roadway, can reduce the size of a protective coal pillar, reduces the waste of coal resources, improves the stoping rate, prolongs the service life of a mine, and ensures safe, efficient and sustainable production of the mine.
Description
Technical Field
The invention relates to a method for arranging mining roadways of a coal face, in particular to a method for arranging mining roadways of an H-shaped coal face, which is suitable for being used underground coal mines.
Background
The safe and efficient production of the underground coal mine provides important energy guarantee for the rapid development of national economy. However, because the underground coal mine is often in shortage of mining and replacing, the sustainable development of the coal mine is restricted. In order to relieve the shortage of mining and replacing of underground coal mines, a plurality of mines adopt a working face sequential replacing mode and a one-face three-lane arrangement mode, wherein one side of each mine is tunneled in a double lane mode, and the width of a large coal pillar between the lanes is generally 15-50 m. Due to the fact that double-roadway tunneling is conducted, the large coal pillar is located in a stress concentration area, a stoping roadway serving for the next replacement work is affected by secondary mining, the stoping roadway is prone to severe deformation and difficult to maintain, a large amount of coal resources are left in the large coal pillar roadway protection, and the stoping rate is reduced.
Although the difficulty in maintaining the stoping roadway is reduced and the situation of tense mining and taking over is temporarily relieved by adopting a working face taking over mode of intermittent jumping mining for part of mines, a large number of island working faces are brought by the intermittent jumping mining. Because the stress concentration degree of the island working surface is high, the recovery tunnel of the island working surface deforms violently and is extremely difficult to maintain during tunneling and working surface recovery, and particularly in a deep mine, the risk of rock burst of the island working surface is increased remarkably. The interval jump mining brings new problems to the safe and sustainable production of the mine. Therefore, a novel working face stoping roadway arrangement method which can prevent the stoping roadway from being influenced by secondary mining, reduce large deformation of surrounding rocks of the roadway and meet the requirement of quick replacement of a working face is urgently needed.
Disclosure of Invention
The technical problem is as follows: aiming at the defects of the traditional working face sequential taking over one-face three-lane arrangement or interval jumping mining mode, the H-shaped coal face stoping lane arrangement method for reducing the large deformation of the pre-digging lane due to the stoping influence, shortening the time for taking over the working face and moving the working face, improving the tunneling speed of the lane and reducing the large deformation of the stoping lane and the maintenance cost is provided.
The technical scheme is as follows: in order to achieve the technical purpose, the H-shaped coal face stoping roadway arrangement method of the invention is characterized in that when the current stoping face is produced, the adjacent transport roadway of the next replacement face is arranged, when the transport roadway of the next replacement face is tunneled to the middle part, the middle connection roadway is tunneled to the current stoping face perpendicular to the transport roadway while the transport roadway is continuously tunneled, after the middle connection roadway is tunneled to the roadway protection narrow coal pillar of the current stoping face, and after the stoping of the current stoping face is finished and the goaf is stable, the end part of the middle connection roadway is tunneled along the upper and lower directions of the roadway protection narrow coal pillar simultaneously on the basis of ensuring the safety of the return roadway of the next replacement face, so that the adjacent return roadway of the next replacement face is formed.
The method comprises the following specific steps:
s1 excavating the transportation lane of the next replacing working face from the transportation main lane in advance when the current stoping working face is stoping;
s2 when the transport lane to be tunneled reaches the middle part of the next replacing working face, the vertical transport lane points to the connecting lane of the middle part of the current stope working face tunneling while the transport lane is tunneled continuously, the end part of the transport lane tunnels to the preset open-cut hole of the working face and stops, and the end part of the middle connecting lane tunnels to the boundary of the narrow coal pillar of the protecting lane and stops;
s3 after the working face under stoping is pushed and a stable goaf is formed, excavating an upper return airway end of the next replacing working face from the middle connected tunnel end along the tunnel-protecting narrow coal pillar to a preset cut hole of the replacing working face;
s4, excavating a lower return airway of the next replacement working face by lagging the current stope, and excavating the lower return airway of the airway to a return air main airway after the goaf formed by the current stope is stable, thereby forming the return airway of the replacement working face;
s5, digging between the end of the upper return airway and the end of the transport airway in the next replacing working surface to form an open-cut hole, thereby communicating the air path;
s6, mining mechanical equipment is assembled in the cut hole dug in the next stope face, and the current stope face is taken over for continuous stope after stope is finished.
Further, the current stope face being stoped includes a goaf, a current stope face haulage roadway and a return airway.
Furthermore, the lower return airway of the next taking over working face needs to be lagged by 300-500 m behind the current stope working face so as to avoid the secondary strong disturbance influence formed by mining of the current stope working face.
Has the advantages that: due to the adoption of the technical scheme, compared with the prior scheme, the invention has the following advantages:
1) due to the adoption of the H-shaped stoping roadway arrangement mode, the stoping roadway of the replacing working face lags behind the goaf of the current stoping working face by 300-500 m and then is excavated, the stoping roadway of the next replacing working face is only affected by one mining action during stoping of the working face, the roadway maintenance workload is small, the maintenance is simple, and meanwhile, the large deformation condition of the roadway is effectively controlled.
2) And the excavation of the mining roadway of the next replacing working face is synchronously carried out with the production of the current mining working face, and when the mining of the current mining working face is finished, the mining roadway of the next replacing working face is also excavated, so that the mining working face can be directly replaced to continue the mining work.
3) Compared with the traditional large coal pillar roadway protection between section roadways, the narrow coal pillar roadway protection of 3-8 m is adopted, and the return airway of the next successive working face is arranged in the stress reduction area, so that stress concentration is avoided, coal resources are saved, and the recovery rate is improved.
4) By adopting the working face arrangement mode of sequential mining, the carrying distance of various mining machines is short, and the mining machines can quickly reach a mining site.
5) And a connecting roadway is excavated in the middle of the next replacing working face, so that the geological occurrence condition of the coal bed can be detected in advance, and the operation rules can be better formulated.
Drawings
FIG. 1 is a schematic diagram of roadway layout of the H-shaped coal face stoping roadway layout method of the invention;
fig. 2 is a schematic flow chart of the method for arranging the stoping roadway of the H-shaped coal face.
In the figure: 1-transport main lane; 2-air return main lane; 3-next take over working face haulage roadway; 4-middle connection lane; 5-the next succeeding working face goes up the return airway; 6-next take over working face lower return airway; 7-cutting the next successive working surface; 8-narrow coal pillar of roadway protection, 9-goaf; 10-current stope face; 11-current stope face haulage roadway; 12-current stope face return airway.
Detailed Description
The implementation of the present invention is further described with reference to the accompanying drawings:
as shown in fig. 1, the method for arranging the mining roadway of the H-shaped coal face is characterized in that: when the current stope face 10 is produced, the adjacent transport lane 3 of the next stope face is arranged, when the transport lane 3 of the next stope face is tunneled to the middle part, the middle connection lane 4 is tunneled to the current stope face 10 perpendicular to the transport lane 3 while the transport lane 3 of the next stope face is tunneled continuously, after the stope face 10 finishes the stope mining after the middle connection lane 4 is tunneled to the roadway protection narrow coal pillar 8 of the current stope face 10 and the goaf 9 is stabilized, the end part of the middle connection lane 4 is tunneled along the roadway protection narrow coal pillar 8 in the up-and-down direction simultaneously on the basis of ensuring the safety of the return airway 2 of the next stope face, and therefore the adjacent return airway of the next stope face is formed.
As shown in fig. 2, the specific steps are as follows:
s1 excavating the haulage roadway 3 of the next succeeding face from the haulage roadway 1 in advance while the current stoping face 10 is being stoped; the front stope face 10 comprises a goaf 9 after being pushed, and stope face transportation lanes 11 and return air lanes 12 are arranged on two sides of the front stope face 10;
s2 when the transport lane 3 is to be tunneled to the middle of the next replacement working face, the vertical transport lane 3 points to the connecting lane 4 of the middle connection when the transport lane 3 is continuously tunneled, the end of the transport lane 3 is tunneled to the preset open-cut hole of the working face and stops, and the end of the middle connecting lane 4 is tunneled to the boundary of the narrow coal pillar 8 of the protection lane and stops;
s3 after the working face under stoping is pushed and a stable goaf 9 is formed, excavating the end of the upper return airway 5 of the next receiving working face from the end of the connecting airway 4 of the middle link along the lane protecting narrow coal pillar 8 to the preset open cut hole of the receiving working face;
s4, excavating the lower return airway 6 of the next replacement working face at a distance of 300-500 m behind the current stope working face 10 to avoid the influence of secondary strong disturbance formed by mining the current stope working face 10, and excavating the lower return airway 6 of the airway to the return main airway 2 after the gob 9 formed by the current stope working face 10 is stable, so as to form the return airway of the replacement working face;
s5, digging between the end of the upper return airway 5 and the end of the transport airway 3 in the next replacing working surface to form an open cut 7 so as to communicate the air path;
s6, mining mechanical equipment is assembled in the cutting hole 7 dug in the next stoping face, and the current stoping face 10 is taken over for continuous stoping after stoping is finished.
Claims (2)
1. A method for arranging a stoping roadway of an H-shaped coal face is characterized by comprising the following steps: when the current stope face (10) is produced, the adjacent transport lane (3) of the next stope face is arranged, when the transport lane (3) of the next stope face is tunneled to the middle, the middle connecting lane (4) is tunneled to the current stope face (10) perpendicular to the transport lane (3) while the transport lane (3) is tunneled continuously, and after the stoping of the current stope face (10) is finished and the goaf (9) is stabilized after the middle connecting lane (4) is tunneled to the roadway narrow coal pillar (8) of the current stope face (10), the tunneling is carried out at the end part of the middle connecting lane (4) along the upper and lower directions of the roadway narrow coal pillar (8) simultaneously on the basis of ensuring the safety of the return airway (2) of the next stope face, so that the next stope face return airway adjacent to is formed;
the method comprises the following specific steps:
s1 excavating the haulage roadway (3) of the next succeeding working face from the main haulage roadway (1) in advance when the current stoping working face (10) is stoping;
s2 when the transport lane (3) is tunneled to the middle of the next replacement working face, the transport lane (3) is continuously tunneled, meanwhile, the vertical transport lane (3) points to the current stope working face (10) to tunnel the middle connection lane (4), the end of the transport lane (3) is tunneled to the preset open-cut hole of the working face and stops, and the end of the middle connection lane (4) is tunneled to the boundary of the roadway protection narrow coal pillar (8) and stops;
s3 after the working face under stoping is pushed and a stable goaf (9) is formed, excavating the end part of an upper air return lane (5) of the next replacement working face from the end part of the middle connecting lane (4) along the narrow coal pillar of the lane protection (8) to the preset open-cut hole of the replacement working face, wherein the narrow coal pillar of the lane protection (8) adopts a narrow coal pillar lane of 3-8 m, and the air return lane of the next replacement working face is arranged in a stress reduction area, so that stress concentration is avoided, coal resources are saved, and the stoping rate is improved;
s4, excavating the lower return airway (6) of the next replacement working face by lagging the current stope (10), and excavating the lower return airway (6) of the tunnel to the return air large airway (2) after the goaf (9) formed by the current stope (10) is stable, so as to form the return airway of the replacement working face;
s5, digging between the end of the upper return airway (5) and the end of the transport airway (3) in the next replacing working surface to form an open-cut hole (7) so as to communicate the air path;
s6, mining mechanical equipment is assembled in the cut hole (7) dug in the next replacing working face, and the current replacing working face (10) is replaced to continue to perform mining after mining is finished; in the whole process, the return airway (5) of the next replacing working face is only influenced by one mining action during the mining of the working face, the workload of roadway maintenance is small, the maintenance is simple, and the large deformation condition of the roadway is effectively controlled.
2. The H-type coal face stoping roadway arrangement method according to claim 1, characterized in that: the lower air return roadway (6) for digging the next replacing working face needs to lag the current stope working face (10) by 300-500 m so as to avoid the secondary strong disturbance influence formed by the mining of the current stope working face (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111077072.2A CN113669060B (en) | 2021-09-13 | 2021-09-13 | H-shaped coal face stoping roadway arrangement method |
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| CN202111077072.2A CN113669060B (en) | 2021-09-13 | 2021-09-13 | H-shaped coal face stoping roadway arrangement method |
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| CN114086957B (en) * | 2021-11-23 | 2023-05-05 | 陕西正通煤业有限责任公司 | Colliery strong impact dangerous island working face roadway outside staggered arrangement anti-impact method |
| CN115839249B (en) * | 2023-01-16 | 2023-04-18 | 煤炭科学技术研究院有限公司 | Method for arranging ultra-long working face double-measure roadway under sequential mining condition |
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| SU1691524A1 (en) * | 1989-01-02 | 1991-11-15 | Донецкий политехнический институт | Method for supporting joint between stoping face and adjoining gallery |
| RU2278262C1 (en) * | 2005-03-28 | 2006-06-20 | Институт угля и углехимии Сибирского отделения Российской Академии Наук (ИУУ СО РАН) | Method for opening and preparation of mine field for flat-laying coal seam |
| CN102996131B (en) * | 2012-12-10 | 2014-10-29 | 中国矿业大学 | Solid-filling coal mining method with two pre-excavating tunnels for advancing |
| CN107725097A (en) * | 2017-10-31 | 2018-02-23 | 中国矿业大学(北京) | Method is controlled altogether without coal pillar mining gas and coal spontaneous combustion in a kind of Qie Dingcheng lanes |
| CN108952716B (en) * | 2018-06-22 | 2020-06-09 | 太原理工大学 | Thick coal seam longwall working face multi-lane arrangement method |
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