CN111997614A - Method for winding thin coal belt on forward fully-mechanized coal mining face - Google Patents
Method for winding thin coal belt on forward fully-mechanized coal mining face Download PDFInfo
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- 238000005065 mining Methods 0.000 title claims abstract description 213
- 239000003245 coal Substances 0.000 title claims abstract description 150
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000004804 winding Methods 0.000 title description 2
- 230000005641 tunneling Effects 0.000 claims abstract description 24
- 239000011435 rock Substances 0.000 claims abstract description 6
- 238000009412 basement excavation Methods 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
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- 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
- 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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- 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
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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
- E21F13/04—Transport of mined material in gravity inclines; in staple or inclined shafts
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Abstract
The invention relates to a method for a forward-type fully-mechanized coal mining face to bypass a thin coal belt. The fully-mechanized mining support installed on the part of the thin coal belt which meets the resistance is not recovered for the time being, and the thin coal belt is penetrated at the position of the original air way to continue to be tunneled forwards for continuing the air way; the tunneling speed of the half coal rock roadway is high, so that the roadway tunneling of the continuous air roadway can reach the front boundary of the thin coal zone in advance; at the moment, making an upper or lower partial incision downwards or upwards; the fully mechanized mining bracket which is retained by the part to be blocked is disassembled and then installed in the local cutting hole, and when the short-distance working surface is pushed to the position of the local cutting hole, the length of the original normal working surface is recovered, and the fully mechanized mining bracket can be normally pushed forward. The method can minimize the influence time of the thin coal belt passing through the upper and lower wind lanes of the advancing mining working face, and the loss caused by the influence time is minimized.
Description
Technical Field
The invention belongs to the technical field of coal mining, and particularly relates to a method for a forward type fully mechanized coal mining face to bypass a thin coal belt.
Background
At present, in coal mine underground mining, the forward working face mining of a rear gob-side entry retaining is a common coal mining method, and is relatively suitable for mining a full-height thin coal seam at one time. When the method is used for mining, a mining roadway is not dug, and with the forward propulsion of a working face, a roadway space is reserved behind the mining face for pedestrians, ventilation, coal transportation and material transportation. Is a high-efficiency and rapid mining method. However, when the upper air way and the lower air way of the forward fully-mechanized mining working face meet local thin coal zones in the mining process, the benefit and the resource recovery rate are lower than those of the backward mining working face. The reason is that when the advanced fully-mechanized coal mining face meets the thin coal belt in the upper air lane and the lower air lane, the face cannot pass through forcibly because the range of the front thin coal belt is unknown, and the face can only be shortened to mine forwards along the inner boundary of the thin coal belt. When the thickness of the normal coal seam is recovered by bypassing the thin coal zone, the face cannot be lengthened by the forward mining (particularly on the fully mechanized mining face), and a large amount of time is wasted and is not paid for because the face needs to be lengthened to stop mining and open the transportation channel. Therefore, the working face is not lengthened under many conditions, the normal coal seam in front of the thin coal zone is retained and cannot be mined, the resource waste is caused, the economic benefit is lost, and the cost is very high when other methods are adopted for mining.
Disclosure of Invention
The idea for solving the problems is as follows: when the upper air lane or the lower air lane of the advancing fully-mechanized coal mining working face meets the thin coal belt, the mining working face can be shortened to the upper boundary or the lower boundary of the thin coal belt to form a short-distance working face, the short-distance working face is straightened and continuously advanced, at the moment, a fully-mechanized coal mining hydraulic support arranged on a part (called as a working face remaining section) of the thin coal belt which meets a resistance is temporarily not recovered, the original air lane is penetrated through the thin coal belt at the position of the original air lane to continuously advance to the front to tunnel the original air lane, the tunnel of the original air lane can be advanced to reach the front boundary of the thin coal belt due to the fact that the normal advancing speed of the half coal rock lane is at least 3 times of the normal advancing speed of the coal mining working face, and at the moment, local cut holes are excavated downwards or upwards. After the local cutting hole is excavated, the fully-mechanized mining hydraulic support which is retained by the part of the thin coal belt which is blocked earlier is arranged in the local cutting hole, and when the short-distance working face is pushed to the position of the local cutting hole, the fully-mechanized mining hydraulic support in the local cutting hole is connected with the fully-mechanized mining hydraulic support in the short-distance working face, and then the fully-mechanized mining hydraulic support is restored to the original normal working face length, so that the fully-mechanized mining hydraulic support can be normally pushed forward. The influence time of the thin coal belt on the upper air lane or the lower air lane of the forward fully mechanized mining face is shortened to the minimum, and the loss caused by the influence time is reduced to the minimum.
The front or forward direction in the specification and the claims represents the advancing direction of the coal mining machine of the fully mechanized mining face; the rear or backward represents the pushing direction of the coal mining machine back to the fully mechanized coal mining face and also represents the direction of returning air to the mountain; the upper part or the upward part represents the height direction of the inclined coal seam; the lower part or the downward part represents the direction of the low elevation of the inclined coal seam; the inner boundaries all represent boundaries towards the middle direction of the fully mechanized coal mining face.
The invention adopts the technical scheme that a method for the forward fully mechanized coal mining face to detour thin coal belts is provided, and the method comprises the following steps:
the first step is as follows: three mining area upward mountains are arranged in a bottom plate rock stratum or a coal bed in the middle or on one side of the trend of the mining area design section, the distance between every two adjacent mining area upward mountains is set to be 10-20 m, and the three mining area upward mountains are respectively a mining area air inlet upward mountain, a mining area transportation upward mountain and a mining area air return upward mountain.
The second step is that: with the propulsion of the forward fully-mechanized coal mining face, a section air return gallery communicated with the mining area air return uphill is reserved at the upper part of the fully-mechanized coal mining face, a section air inlet gallery communicated with the mining area air inlet uphill is reserved at the lower part of the fully-mechanized coal mining face, and coal conveying equipment is installed in the section air inlet gallery.
The third step: when the upper air lane meets the upper thin coal zone or the lower air lane meets the lower thin coal zone in the process of pushing the fully-mechanized coal mining face, the normally-pushed fully-mechanized coal mining face is shortened to be a lower short-distance mining face or an upper short-distance mining face, the mining of the lower short-distance mining face is continued forward along the lower boundary of the upper thin coal zone or the mining of the upper short-distance mining face is continued forward along the upper boundary of the lower thin coal zone, and a newly-opened return air drift or a newly-opened air intake drift is reserved.
The fourth step: the hydraulic support for fully mechanized mining in the upper or lower left-over section and the left-over section of the original fully mechanized mining working face which cannot be continuously pushed is kept still.
The fifth step: and keeping the section return air drift at the upper part of the original fully mechanized mining face or the section air intake drift at the lower part of the original fully mechanized mining face in the original tunneling direction in the thin coal belt, continuously tunneling forwards, tunneling out the continuous return air drift or the continuous air intake drift, and tunneling forwards for 20 meters while tunneling downwards to tunnel out the upper auxiliary inclined drift or simultaneously tunneling upwards to tunnel out the lower auxiliary inclined drift to communicate with the newly-opened return air drift or the newly-opened air intake drift.
And a sixth step: when the air return gallery is continued to dig into the front boundary of the upper thin coal belt, digging an upper cutting hole downwards; or when the continuous air intake gallery is dug to the front boundary of the lower thin coal belt, the lower cutting hole is dug upwards.
The seventh step: when the upper cutting hole is dug downwards to the lower boundary of the upper thin coal belt or the lower cutting hole is dug upwards to the upper boundary of the lower thin coal belt and is at the same level with the newly opened return air gallery or the newly opened air inlet gallery, the reversely dug auxiliary return air gallery or the reversely dug auxiliary air inlet gallery is dug backwards, the reversely dug auxiliary return air gallery is communicated with the newly opened return air gallery, and the reversely dug auxiliary air inlet gallery is communicated with the newly opened air inlet gallery.
Eighth step: and conveying the fully-mechanized mining hydraulic support in the original left section at the upper part of the fully-mechanized mining working face to an upper hole cutting hole for installation for later use through a continuous return air gallery or a reverse excavation auxiliary return air gallery and a newly opened return air gallery.
Or the fully-mechanized mining hydraulic support in the lower left section of the original fully-mechanized mining working face is conveyed to the lower cutting hole through the continuous air inlet gallery or the reverse excavation auxiliary air inlet gallery and the newly opened air inlet gallery to be installed for later use.
The ninth step: and when the lower short-distance mining surface is pushed to the position communicated with the upper cutting hole, adjusting the fully-mechanized mining hydraulic support in the lower short-distance mining surface to be consistent with the fully-mechanized mining hydraulic support in the upper cutting hole to form an upper recovery coal mining working surface, and continuously and normally pushing forwards by adopting a forward coal mining method.
Or when the upper short-distance mining surface is pushed to a position communicated with the lower cutting hole, adjusting the fully-mechanized mining hydraulic support in the upper short-distance mining surface to be consistent with the fully-mechanized mining hydraulic support in the lower cutting hole to form a lower recovery coal mining working surface, and continuing to normally push forwards by adopting a forward coal mining method.
Preferably, a scraper conveyor or a temporary winch is arranged in the upper auxiliary inclined roadway or the lower auxiliary inclined roadway.
Preferably, a temporary installing winch is also arranged in the upper or lower left-over section, the upper or lower cutting hole of the fully mechanized mining face.
Preferably, a material transporting facility or coal transporting equipment is laid in the continuous return air gallery or the continuous inlet air gallery, the newly opened return air gallery or the newly opened inlet air gallery, the reverse tunneling auxiliary return air gallery or the reverse tunneling auxiliary inlet air gallery.
The invention has the beneficial effects that: the method solves the problem that the coal seam reserves in front of the thin coal zone are abandoned when the upper air way or the lower air way of the existing forward type fully-mechanized coal mining face meets the thin coal zone, and the working face is not stopped when the fully-mechanized coal mining face changes the mining length, so that the mining time is not delayed, continuous and uninterrupted mining can be basically realized, and the method is very beneficial to the high-efficiency production of the fully-mechanized coal mining face and the production benefit of the whole mine.
Drawings
FIG. 1 is a schematic diagram of a mining method of the coal mining method of the invention when an upper airway of a fully mechanized coal mining face meets a thin coal belt;
fig. 2 is a schematic diagram of the mining method of the coal mining method of the invention when the lower airway of the fully mechanized coal mining face meets a thin coal belt.
Reference numerals
1. Returning air to the mining area to ascend the mountain; 2. transporting the coal to the mountains in the mining area; 3. air is fed into a mining area and ascends a mountain; 4. section return air level; 5. an upper legacy section; 6. newly opening a return airway; 7. an upper auxiliary inclined roadway; 8. an upper thin coal belt; 9. reversely digging an auxiliary return airway; 10. continuing to return the air gallery; 11. cutting the upper part of the hole; 12. recovering the coal face; 13. lower short-distance mining; 14. fully mechanized mining working face; 15. a section air inlet gallery; 16. coal chute holes; 25. a lower legacy section; 26. newly opening an air intake gallery; 27. a lower auxiliary inclined roadway; 28. a lower thin coal belt; 29. reversely digging an auxiliary air inlet gallery; 30. continuing the air intake gallery; 31. cutting holes at the lower part; 32. recovering the coal face; 33. and (5) mining the face at a short distance.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1: the detour method when the air drift on the advancing fully mechanized coal mining face meets the thin coal belt comprises the following steps:
the first step is as follows: a mining area return air ascending mountain 1, a mining area transportation ascending mountain 2 and a mining area intake air ascending mountain 3 are arranged in a bottom plate rock stratum in the middle or one side of the trend of a mining area design section; the distance between the return air ascending mountain 1 of the mining area and the transport ascending mountain 2 of the mining area is 20 meters, and the distance between the transport ascending mountain 2 of the mining area and the intake air ascending mountain 3 of the mining area is 20 meters; wherein the intake air upward 3 of the mining area in the embodiment is also used as the upward of the track of the mining area.
The second step is that: with the propulsion of the forward fully-mechanized coal mining face 14, a section air return gallery 4 communicated with a mining area air return upper mountain 1 is reserved at the upper part of the fully-mechanized coal mining face 14, a section air inlet gallery 15 communicated with a mining area air inlet upper mountain 3 is reserved at the lower part of the fully-mechanized coal mining face 14, a coal chute 16 is arranged between the section air inlet gallery 15 and the mining area transport upper mountain 2, and coal conveying equipment is installed in the section air inlet gallery 15.
The third step: when the upper air roadway meets the upper thin coal zone 8 in the process of pushing the fully-mechanized coal mining face 14, the normally pushed fully-mechanized coal mining face 14 is shortened to be the lower short-distance mining face 13, the mining of the lower short-distance mining face 13 is continued forwards along the lower boundary of the upper thin coal zone 8, and meanwhile, a newly-opened return air roadway 6 is reserved.
The fourth step: the upper remaining section 5 of the original fully mechanized mining working surface 14 which can not be pushed continuously and the fully mechanized mining hydraulic support in the upper remaining section 5 are kept still.
The fifth step: and (3) keeping the original tunneling direction in the upper thin coal belt 8 of the section air return gallery 4 positioned at the upper part of the original fully mechanized mining face 14, continuously tunneling forwards, tunneling out the continuous air return gallery 10, and tunneling 20 meters forwards while tunneling downwards out the upper auxiliary inclined gallery 7, wherein the upper auxiliary inclined gallery 7 is communicated with the newly-opened air return gallery 6.
And a sixth step: when the continuous return airway 10 is dug to the front boundary of the upper thin coal strip 8, the upper incisions 11 are dug downward.
The seventh step: when the upper cutting hole 11 is dug down to the lower boundary of the upper thin coal belt 8 and is at the same level with the newly opened return airway 6, the backward digging auxiliary return airway 9 is dug out in the backward direction, and the backward digging auxiliary return airway 9 is communicated with the newly opened return airway 6.
Eighth step: the fully mechanized mining hydraulic support in the upper remaining section 5 of the original fully mechanized mining working face 14 is conveyed to an upper cutting hole 11 through a continuous return air gallery 10 or a reverse excavation auxiliary return air gallery 9 and a newly opened return air gallery 6 to be installed for standby; during this time, the return air from the lower short stope 13 is returned to the segmental return airway 4 through the upper auxiliary inclined airway 7.
The ninth step: and when the lower short-cut mining surface 13 is pushed to a position communicated with the upper cutting hole 11, adjusting the fully-mechanized mining hydraulic support in the lower short-cut mining surface 13 to be consistent with the fully-mechanized mining hydraulic support in the upper cutting hole 11 to form an upper recovery coal mining working surface 12, and continuously and normally pushing forwards by adopting a forward coal mining method.
And a temporary winch is arranged in the upper auxiliary inclined roadway 7.
Temporary winches are also arranged in the upper left section 5 and the upper cutting hole 11 of the fully mechanized coal mining face 14.
And a track or a monorail crane is laid in the continuous return air gallery 10, the newly opened return air gallery 6 and the reverse excavation auxiliary return air gallery 9.
Example two:
as shown in fig. 2: the detour method when the lower airway of the advancing fully mechanized coal mining face meets the thin coal belt comprises the following steps:
the first step is as follows: a mining area return air ascending mountain 1, a mining area transportation ascending mountain 2 and a mining area intake air ascending mountain 3 are arranged in a bottom plate rock layer at one side of the trend of a mining area design section; the distance between the return air ascending mountain 1 of the mining area and the transport ascending mountain 2 of the mining area is 20 meters, and the distance between the transport ascending mountain 2 of the mining area and the intake air ascending mountain 3 of the mining area is 20 meters; wherein the intake air upward 3 of the mining area in the embodiment is also used as the upward of the track of the mining area.
The second step is that: with the propulsion of the forward fully-mechanized coal mining face 14, a section air return gallery 4 communicated with a mining area air return upper mountain 1 is reserved at the upper part of the fully-mechanized coal mining face 14, a section air inlet gallery 15 communicated with a mining area air inlet upper mountain 3 is reserved at the lower part of the fully-mechanized coal mining face 14, a coal chute 16 is arranged between the section air inlet gallery 15 and the mining area transport upper mountain 2, and coal conveying equipment is installed in the section air inlet gallery 15.
The third step: when the lower air roadway meets the lower thin coal belt 28 in the process of advancing the fully mechanized coal mining face 14, the normally-advanced fully mechanized coal mining face 14 is shortened to the upper short-distance mining face 33, the mining of the upper short-distance mining face 33 is continued along the upper boundary of the lower thin coal belt 28, and meanwhile, a newly-opened air intake roadway 26 is reserved.
The fourth step: the lower remaining section 25 of the original fully mechanized mining working surface 14 which can not be pushed continuously and the fully mechanized mining hydraulic support in the lower remaining section 25 are kept still.
The fifth step: and (3) keeping the section air intake gallery 15 at the lower part of the original fully mechanized mining face 14 in the lower thin coal belt 28 in the original tunneling direction, continuously tunneling forwards, tunneling out a continuous air intake gallery 30, and tunneling upwards at a position 20 meters forwards to tunnel out a lower auxiliary inclined gallery 27 to be communicated with the newly opened air intake gallery 26.
And a sixth step: when the continuous air entry level 30 is dug to the front boundary of the lower thin coal seam 28, the lower kerfs 31 are dug upward.
The seventh step: when the lower cut hole 31 is dug to the upper boundary of the lower thin coal belt 28 and is at the same level as the newly opened air entry roadway 26, the backward dug auxiliary air entry roadway 29 is dug backward, and the backward dug auxiliary air entry roadway 29 is communicated with the newly opened air entry roadway 26.
Eighth step: the fully mechanized mining hydraulic support in the lower remaining section 25 of the original fully mechanized mining working face 14 is conveyed to a lower cutting hole 31 through a continuous air inlet gallery 30 or a reverse excavation auxiliary air inlet gallery 29 and a newly opened air inlet gallery 26 to be installed for standby; during this period, coal mined from the upper short cut face 33 is carried from the lower auxiliary inclined drifts 27 into the sectional air intake drifts 15.
The ninth step: and when the upper short-cut mining face 33 is pushed to the position where the lower cutting hole 31 penetrates, adjusting the fully-mechanized mining hydraulic support in the upper short-cut mining face 33 and the fully-mechanized mining hydraulic support in the lower cutting hole 31 to be consistent to form a lower recovery coal mining working face 32, and continuing to normally push forwards by adopting a forward coal mining method.
And a scraper conveyor and a temporary winch are arranged in the lower auxiliary inclined roadway 27.
Temporary winches are also arranged in the lower left-over section 25 and the lower cutting hole 31 of the fully mechanized coal mining face 14.
And tracks and belt conveyors are laid in the continuous air inlet gallery 30, the newly opened air inlet gallery 26 and the reverse digging auxiliary air inlet gallery 29.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents.
Claims (4)
1. The method for the forward fully mechanized coal mining face to bypass the thin coal belt is characterized in that: the method comprises the following steps:
the first step is as follows: three mining area upward mountains are arranged in a bottom plate rock stratum or a coal bed in the middle or at one side of the trend of a mining area design section, the distance between the two adjacent mining area upward mountains is set to be 10-20 m, and the three mining area upward mountains are respectively a mining area air inlet upward mountain, a mining area transportation upward mountain and a mining area air return upward mountain;
the second step is that: with the propulsion of the forward fully-mechanized coal mining face, a section air return gallery communicated with a mining area air return uphill is reserved at the upper part of the fully-mechanized coal mining face, a section air inlet gallery communicated with the mining area air inlet uphill is reserved at the lower part of the fully-mechanized coal mining face, and coal conveying equipment is installed in the section air inlet gallery;
the third step: when an upper air tunnel meets an upper thin coal zone or a lower air tunnel meets a lower thin coal zone in the process of pushing the fully-mechanized coal mining face, the normally-pushed fully-mechanized coal mining face is shortened to be a lower short-distance mining face or an upper short-distance mining face, the mining of the lower short-distance mining face is continued forward along the lower boundary of the upper thin coal zone or the mining of the upper short-distance mining face is continued forward along the upper boundary of the lower thin coal zone, and a newly-opened return air drift or a newly-opened air intake drift is reserved;
the fourth step: keeping the original fully-mechanized mining hydraulic support in the upper or lower left-over section and the left-over section of the fully-mechanized mining working face which cannot be continuously pushed still;
the fifth step: keeping the original tunneling direction in the thin coal belt for continuously tunneling a section return air gallery at the upper part of the original fully mechanized mining face or a section air inlet gallery at the lower part of the original fully mechanized mining face forward, tunneling a continuous return air gallery or a continuous air inlet gallery, tunneling an upper auxiliary inclined gallery downwards or simultaneously tunneling a lower auxiliary inclined gallery upwards at a position 20 meters ahead, and communicating with a newly-opened return air gallery or a newly-opened air inlet gallery;
and a sixth step: when the air return gallery is continued to dig into the front boundary of the upper thin coal belt, digging an upper cutting hole downwards; or when the continuous air intake gallery is dug to the front boundary of the lower thin coal belt, the lower cutting hole is dug upwards;
the seventh step: when the upper cutting hole is dug downwards to the lower boundary of the upper thin coal belt or the lower cutting hole is dug upwards to the upper boundary of the lower thin coal belt and is at the same level with the newly opened return air gallery or the newly opened air inlet gallery, the reversely dug auxiliary return air gallery or the reversely dug auxiliary air inlet gallery is dug backwards, the reversely dug auxiliary return air gallery is communicated with the newly opened return air gallery, and the reversely dug auxiliary air inlet gallery is communicated with the newly opened air inlet gallery;
eighth step: conveying the fully-mechanized mining hydraulic support in the original left section at the upper part of the fully-mechanized mining working face to an upper hole cutting and mounting for later use through a continuous return air gallery or a reverse excavation auxiliary return air gallery and a newly opened return air gallery;
or, the fully-mechanized mining hydraulic support in the lower left section of the original fully-mechanized mining working face is conveyed to the lower cutting hole through the continuous air inlet gallery or the reverse excavation auxiliary air inlet gallery and the newly opened air inlet gallery to be installed for later use;
the ninth step: when the lower short-distance mining surface is pushed to a position communicated with the upper cutting hole, adjusting the fully-mechanized mining hydraulic support in the lower short-distance mining surface to be consistent with the fully-mechanized mining hydraulic support in the upper cutting hole to form an upper recovery coal mining working surface, and continuing to normally push forwards by adopting a forward coal mining method;
or when the upper short-distance mining surface is pushed to a position communicated with the lower cutting hole, adjusting the fully-mechanized mining hydraulic support in the upper short-distance mining surface to be consistent with the fully-mechanized mining hydraulic support in the lower cutting hole to form a lower recovery coal mining working surface, and continuing to normally push forwards by adopting a forward coal mining method.
2. The method of advancing a fully mechanized coal mining face around a thin coal seam as recited in claim 1, further comprising: and a scraper conveyor or a temporary winch is arranged in the upper auxiliary inclined roadway or the lower auxiliary inclined roadway.
3. The method of advancing a fully mechanized coal mining face around a thin coal seam as recited in claim 1, further comprising: and temporary winches are also arranged in the upper or lower leaving section, the upper or lower cutting hole of the fully mechanized coal mining face.
4. The method of advancing a fully mechanized coal mining face around a thin coal seam as recited in claim 1, further comprising: and material transporting facilities or coal transporting equipment are laid in the continuous return air gallery or the continuous air inlet gallery, the newly opened return air gallery or the newly opened air inlet gallery, the reversely excavated auxiliary return air gallery or the reversely excavated auxiliary air inlet gallery.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404492A (en) * | 2021-07-22 | 2021-09-17 | 河南神火煤电股份有限公司 | Fully-mechanized mining working face soft channel dust settling system and method |
| CN116104495A (en) * | 2022-11-30 | 2023-05-12 | 华能煤炭技术研究有限公司 | Obstacle-passing stoping method for gob-side entry retaining coal face |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113404492A (en) * | 2021-07-22 | 2021-09-17 | 河南神火煤电股份有限公司 | Fully-mechanized mining working face soft channel dust settling system and method |
| CN113404492B (en) * | 2021-07-22 | 2023-08-08 | 河南神火煤电股份有限公司 | Soft channel dust fall system and method for fully mechanized coal mining face |
| CN116104495A (en) * | 2022-11-30 | 2023-05-12 | 华能煤炭技术研究有限公司 | Obstacle-passing stoping method for gob-side entry retaining coal face |
| CN116104495B (en) * | 2022-11-30 | 2023-09-22 | 华能煤炭技术研究有限公司 | Obstacle-passing stoping method for gob-side entry retaining coal face |
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