CN203476375U - U+U type laneway ventilating system of coalface - Google Patents
U+U type laneway ventilating system of coalface Download PDFInfo
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- CN203476375U CN203476375U CN201220485602.7U CN201220485602U CN203476375U CN 203476375 U CN203476375 U CN 203476375U CN 201220485602 U CN201220485602 U CN 201220485602U CN 203476375 U CN203476375 U CN 203476375U
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Abstract
The utility model provides a U+U type laneway ventilating system of a coalface, solving the problem that the gas of the coalface is hard to treat. The system comprises a first coalface and a second coalface, wherein a first U-shaped laneway is arranged on the periphery of the first coalface, the first U-shaped laneway comprises a main air inlet laneway, an assistant air inlet and belt conveying laneway and a first cutting hole; a second U-shaped laneway is arranged on the periphery of the second coalface; and the second coalface laneway comprises a first air returning laneway, a second air returning laneway and a second cutting hole. The assistant air inlet and belt conveying laneway is adjacent to the first air returning laneway, and an entity coal pillar is arranged between the assistant air intake and belt conveying laneway and the first air returning laneway; a transverse bar is formed on the entity coal pillar; and the first cutting hole is communicated with the second cutting hole. Due to the fact that the first air returning laneway is affected by the coal extraction dynamic pressure, the support to the first air returning laneway needs to be strengthened, the densities of anchor poles and anchor cables of a top board are increased, and steel bar ladder beams are interlocked to strengthen the support of anchor cables on the coal sidewall. With the adoption of the U+U type laneway ventilating system provided by the utility model, the problem that high gas on the coalface is hard to exhaust can be solved; and the true pumping, excavating and mining are joined normally.
Description
Technical field
The utility model relates to a kind of coal mine down-hole tunnel and arranges ventilation system, specifically a kind of stope U+U type dash system.
Background technology
At present, the support in gateway of coal mining face arrangement that China's coal-mine down-hole generally adopts has the multiple tunnel arrangements such as " U " type, " U+L " type, " U+I " type, the needs that the tunnel that these modes are arranged under present low gas condition substantially can meet production, ventilate, but under high gas condition, the driving of gate road and stope ventilating gas all exist much more formidable drawbacks on administering.Because coal gas outburst amount under highly gassy mine is large, often there is gas exceeding limit and be forced to stop dig phenomenon in single lane long distance driving, once there is blowing-out phenomenon simultaneously, whole piece tunnel gas density with and can rise and form a very large gas storehouse, bring very large hidden danger to drawing-off gas and safety management.
Summary of the invention
The purpose of this utility model is in order to solve the problem of the stope gas control difficulty of existing highly gassy mine, and a kind of stope U+U type dash system is provided.Meanwhile, due to the particularity in the utility model U+U type tunnel, the first return airway wherein can be subject to very large back production dynamic pressure impact, so the utility model has also proposed the specific support pattern for U+U type tunnel the first return airway.
The utility model is achieved through the following technical solutions:
A stope U+U type dash system, comprises the first stope and second stope of adjacent setting; In the outer first U-shaped tunnel that is arranged with of the first stope, the first U-shaped tunnel comprises steps on Zhu Jin lane, work plane both sides, the auxiliary air intake belt-conveying lane of holding concurrently for first go back to, and steps on first of work plane front side for first go back to and cut eye; In the outer second U-shaped tunnel that is arranged with of the second stope, the second U-shaped tunnel comprises the first return airway, second return airway of the second stope both sides, and the second stope front side second cut eye; Hold concurrently first return airway in belt-conveying lane and the second U-shaped tunnel of the auxiliary air intake in the first U-shaped tunnel is adjacent and between the two, be provided with the entity coal column that thickness is 35m, on entity coal column, offer several and be communicated with the hold concurrently horizontal river of belt-conveying lane and the first return airway of auxiliary air intake, first of the first U-shaped tunnel is cut eye and second of the second U-shaped tunnel and is cut to be connected and communicate.In stope tunneling process, the first return airway can be subject to very large back production dynamic pressure impact, general supporting method supporting effect is not good, therefore, the first return airway need carry out the strong supporting that adds of ad hoc fashion, concrete supporting method is: 1) roof timbering: on the first return airway top board, the vertical muscle twisted steel anchor rod of the left-handed nothing of vertically disposed high strength is moved towards in uniform some row's directions and tunnel, the spacing of the vertical muscle twisted steel anchor rod of the left-handed nothing of adjacent two row's high strength is 1000mm, the vertical muscle twisted steel anchor rod of the left-handed nothing of every row's high strength comprises that five diameters are 22mm, length is the vertical muscle twisted steel anchor rod of the left-handed nothing of the high strength of 2400mm, the spacing of the adjacent vertical muscle twisted steel anchor rod of two left-handed nothings of high strength is 1050mm, the lower end of every row's the vertical muscle twisted steel anchor rod of five left-handed nothings of high strength is fixed with a W steel band jointly, and be also fixed with respectively an anchor rod pallet board between the end, lower end of the vertical muscle twisted steel anchor rod of five left-handed nothings of high strength and W steel band, the specification of anchor rod pallet board is 120 * 120 * 10mm, the every vertical muscle twisted steel anchor rod of the left-handed nothing of high strength exposes and is no more than 50mm, between W steel band and back, also sandwiched is fixed with wire lath, and the specification of wire lath is 5.5 * 1.2m, the vertical muscle twisted steel anchor rod midline position of adjacent two row's high strength left-handed nothing is also provided with row's anchor cable, and every row's anchor cable comprises that two or three diameters are the anchor cable that 22mm, length are 7400mm, and two anchor cables rows are arranged alternately by row with three anchor cables rows, in two anchor cable rows, the spacing of two anchor cables is 2000mm, and in three anchor cable rows, the spacing of adjacent two anchor cables is 1800mm, in anchor cable row, the lower end of every anchor cable is fixed with anchor cable pallet, and the specification of anchor cable pallet is 300 * 300 * 16mm, and every anchor cable exposes and is no more than 300mm, fixedly use a k2335 resin anchoring agent and a z2360 resin anchoring agent during the vertical muscle twisted steel anchor rod of the left-handed nothing of high strength, fixedly use a k2335 resin anchoring agent and two z2360 resin anchoring agents during anchor cable, 2) coal side supporting: help respectively uniform some row's directions at two coals and move towards the left-handed nothing of vertically disposed high strength with tunnel and indulge muscle twisted steel anchor rod, the spacing of the vertical muscle twisted steel anchor rod of the left-handed nothing of adjacent two row's high strength is 1000mm, the vertical muscle twisted steel anchor rod of the left-handed nothing of every row's high strength comprises that three diameters are 22mm, length is the vertical muscle twisted steel anchor rod of the left-handed nothing of the high strength of 2400mm, the spacing of the adjacent vertical muscle twisted steel anchor rod of two left-handed nothings of high strength is 1100mm, the lower end of the every vertical muscle twisted steel anchor rod of the left-handed nothing of high strength is fixed with a steel band pallet, the specification of steel band pallet is: 250 * 350 * 5mm, the every vertical muscle twisted steel anchor rod of the left-handed nothing of high strength exposes and is no more than 50mm, midline position between the vertical muscle twisted steel anchor rod of the left-handed nothing of every two row's high strength is provided with row's anchor cable, every row's anchor cable comprises the anchor cable that two spacing are 2200mm, the lower end of two anchor cables of every row is fixed with a steel bar ladder beam jointly, and be also fixed with respectively an anchor cable pallet between the end, lower end of two anchor cables and steel bar ladder beam, the specification of anchor cable pallet is 300 * 300 * 16mm, and every anchor cable exposes and is no more than 300mm, in addition, both sides coal is helped and is all provided with the rhombus net that mesh specification is 50 * 50mm, and the specification of rhombus net is 3.0 * 1.2m, rhombus net oblique cut grafting is not less than 100mm, wherein, the rhombus net that coal column side coal is helped is wire lath, and adopting the rhombus net that face side coal helps is plastic wire.
The utility model is exactly the side in the U-shaped tunnel of stope, retain after the entity coal column that 35m is thick, and then arranging a U-shaped tunnel, two U-shaped tunnels have formed the dash system of U+U type jointly, improve ventilation, improved the high problem of stope gas.After a stope pushes through, the U-shaped tunnel of this stope is caving thereupon, and the U-shaped tunnel of adjacent stope successfully remains, for adjacent stope service is used.Simultaneously, due to U+U type tunnel particularity structurally, the first return airway wherein can be subject to very large back production dynamic pressure impact, general supporting method supporting effect is not good, does not reach designing requirement, therefore, the first return airway need carry out the strong supporting that adds of ad hoc fashion, except top board strengthens anchor pole, anchor cable density, portion of side anchor cable adopts steel bar ladder beam to interlock to add strong supporting, and each parameter of supporting is to optimize by a large amount of theoretical analysis and calculation and numerical simulation calculation.
The utility model U+U type dash system is: fresh distinguished and admirable from double auxiliary lane → main air intake lane → the first stope of transporting of air intake, a dirty wind part for the first stope is cut eye → the second return airway → return air lane of going down the hill by section → second in → the first return airway of the horizontal river of the first stope → upper corner → hysteresis work plane (goaf after horizontal river), outer section → the return air of the horizontal river of fresh distinguished and admirable mixing → first advance (the horizontal river before goaf) → the first return airway that a part is held concurrently in belt-conveying Xiang Bingyu lane by the first stope → auxiliary air intake in addition lane of going down the hill.
In addition, the producing coal system in the utility model U+U type tunnel is: step on work plane → auxiliary air intake belt-conveying lane → belt lane of going down the hill of holding concurrently for first go back to.Stady On The Auxiliary Transportation Systems is: air intake auxiliary fortune lane → main air intake lane → the first stope of going down the hill of holding concurrently.Liquid-supplying system is: auxiliary air intake belt-conveying lane → the first of holding concurrently cuts eye.
In the utility model U+U type dash system, the management of horizontal river is: in the progradation with stope, when the horizontal river that auxiliary air intake is held concurrently between belt-conveying lane and the first return airway has just entered goaf, goaf is with an inner upper horizontal river airtight (the horizontal river of hysteresis work plane) in time, and beyond advance support, next horizontal river will be opened (the horizontal river of first advance) in time.
Further, on entity coal column, every 50m, offer a horizontal river.Every 50m offers the air-conditioning requirement that a horizontal river can meet stope upper corner well.
The beneficial effects of the utility model are as follows:
1, U+U type tunnel can form full blast pressure in time, by high negative pressure Wind Volume dilution full blast, presses tunnel gas, and the distance of dwindling local fan ventilation, realizes the continuous driving in tunnel, improves drivage efficiency.
2, in four of U+U type tunnel gate roads, the first U-shaped tunnel of two of stopes is air intake lane, and two U-shaped tunnels of the second stope are return airway, and two return airways are all the time in entity coal one side on the one hand, the wind supply quantity that is conducive to improve stope, drift section is guaranteed; Another side return airway be in eventually full blast press distinguished and admirable in, facilitate personnel to enter the operation of rear portion, goaf, by Wei Xiangheng river, rear portion, can also carry out goaf extraction.
3, two of the second stope U-shaped tunnels want secondary to use at the adjacent face of adopting, and from long-range angle, have reduced the roadway engineering amount of the face of adopting, and have reduced by ten thousand tons of drivage ratios.
4, in U+U type dash system, can realize laddering extraction, due to the second Liu lane, stope U tunnel, can provide room and time for Adjacent Working Face gas drainage under suction, tunnelling is carried out under present low gas condition, and the pumping, excavation, mining that realize are truly connected normal.
Accompanying drawing explanation
Fig. 1 is that schematic diagram has been arranged in U+U type of the present utility model tunnel.
Fig. 2 is U+U type of the present utility model tunnel exploitation process schematic diagram.
Fig. 3 is that in the utility model U+U type tunnel, the first return airway is reinforced schematic cross-section.
Fig. 4 is the first return airway roof reinforcement schematic diagram in the utility model U+U type tunnel.
Fig. 5 is that in the utility model U+U type tunnel, the first return airway coal side reinforces schematic diagram.
In figure: 1-the first stope, 2-the second stope, the main air intake of 3-lane, the auxiliary air intake of the 4-belt-conveying lane of holding concurrently, 5-first cuts eye, 6-the first return airway, 7-the second return airway, 8-second cuts eye, 9-entity coal column, the horizontal river of 10-, 11-top board, the left-handed nothing of 12-high strength is indulged muscle twisted steel anchor rod, 13-W steel band, 14-anchor rod pallet board, 15-wire lath, 16-anchor cable, 17-anchor cable pallet, 18-coal side, 19-steel band pallet, 20-steel bar ladder beam, 21-rhombus net, the 22-belt lane of going down the hill, the 23-air intake auxiliary fortune lane of going down the hill of holding concurrently, the 24-return air lane of going down the hill, 25-goaf.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
As shown in Figure 1, 2, a kind of stope U+U type dash system, comprises the first stope 1 and second stope 2 of adjacent setting, in the outer first U-shaped tunnel that is arranged with of the first stope 1, the first U-shaped tunnel comprises steps on the main air intake lane 3 of work plane 1 both sides, the auxiliary air intake belt-conveying lane 4 of holding concurrently for first go back to, and steps on first of work plane 1 front side for first go back to and cut eye 5, in the outer second U-shaped tunnel that is arranged with of the second stope 2, the second U-shaped tunnel comprises the first return airway 6, second return airway 7 of the second stope 2 both sides, and the second stope 2 front sides second cut eye 8, hold concurrently first return airway 6 in belt-conveying lane 4 and the second U-shaped tunnel of the auxiliary air intake in the first U-shaped tunnel is adjacent and between the two, be provided with the entity coal column 9 that thickness is 35m, on entity coal column 9, every 50m, offer one and be communicated with hold concurrently first the cutting eye 5 and second of the second U-shaped tunnel and cut 8 and be connected and communicate of 10, the first U-shaped tunnels, horizontal river of belt-conveying lane 4 and the first return airway 6 of auxiliary air intake, the first return airway 6 in this ventilation system is for to avoid the impact of back production dynamic pressure need add strong supporting, as Fig. 3, 4, shown in 5, supporting method is: 1) roof timbering: on the first return airway top board 11, the vertical muscle twisted steel anchor rod 12 of the left-handed nothing of vertically disposed high strength is moved towards in uniform some row's directions and tunnel, the spacing of the vertical muscle twisted steel anchor rod 12 of the left-handed nothing of adjacent two row's high strength is 1000mm, the vertical muscle twisted steel anchor rod 12 of the left-handed nothing of every row's high strength comprises that five diameters are 22mm, length is the vertical muscle twisted steel anchor rod 12 of the left-handed nothing of the high strength of 2400mm, the spacing of the adjacent vertical muscle twisted steel anchor rod 12 of two left-handed nothings of high strength is 1050mm, the lower end of every row's the vertical muscle twisted steel anchor rod 12 of five left-handed nothings of high strength is fixed with a W steel band 13 jointly, and be also fixed with respectively an anchor rod pallet board 14 between the end, lower end of the vertical muscle twisted steel anchor rod 12 of five left-handed nothings of high strength and W steel band 13, the specification of anchor rod pallet board 14 is 120 * 120 * 10mm, the every vertical muscle twisted steel anchor rod 12 of the left-handed nothing of high strength exposes and is no more than 50mm, between W steel band 13 and back 11, also sandwiched is fixed with wire lath 15, and the specification of wire lath 15 is 5.5 * 1.2m, vertical muscle twisted steel anchor rod 12 midline positions of adjacent two row's high strength left-handed nothing are also provided with row's anchor cable 16, and every row's anchor cable 16 comprises that two or three diameters are the anchor cable 16 that 22mm, length are 7400mm, and two anchor cables rows are arranged alternately by row with three anchor cables rows, in two anchor cable rows, the spacing of two anchor cables 16 is 2000mm, and in three anchor cable rows, the spacing of adjacent two anchor cables 16 is 1800mm, in anchor cable row, the lower end of every anchor cable 16 is fixed with anchor cable pallet 17, and the specification of anchor cable pallet 17 is 300 * 300 * 16mm, and every anchor cable 16 exposes and is no more than 300mm, fixedly use a k2335 resin anchoring agent and a z2360 resin anchoring agent during the vertical muscle twisted steel anchor rod 12 of the left-handed nothing of high strength, fixedly use a k2335 resin anchoring agent and two z2360 resin anchoring agents during anchor cable 16, 2) coal side supporting: uniform some row's directions are moved towards the left-handed nothing of vertically disposed high strength with tunnel and indulged muscle twisted steel anchor rod 12 respectively in two coals sides 18, the spacing of the vertical muscle twisted steel anchor rod 12 of the left-handed nothing of adjacent two row's high strength is 1000mm, the vertical muscle twisted steel anchor rod 12 of the left-handed nothing of every row's high strength comprises that three diameters are 22mm, length is the vertical muscle twisted steel anchor rod 12 of the left-handed nothing of the high strength of 2400mm, the spacing of the adjacent vertical muscle twisted steel anchor rod 12 of two left-handed nothings of high strength is 1100mm, the lower end of the every vertical muscle twisted steel anchor rod 12 of the left-handed nothing of high strength is fixed with a steel band pallet 19, the specification of steel band pallet 19 is: 250 * 350 * 5mm, the every vertical muscle twisted steel anchor rod 12 of the left-handed nothing of high strength exposes and is no more than 50mm, midline position between the vertical muscle twisted steel anchor rod 12 of the left-handed nothing of every two row's high strength is provided with row's anchor cable 16, every row's anchor cable 16 comprises the anchor cable 16 that two spacing are 2200mm, the lower end of two anchor cables 16 of every row is fixed with a steel bar ladder beam 20 jointly, and be also fixed with respectively an anchor cable pallet 17 between the end, lower end of two anchor cables 16 and steel bar ladder beam 20, the specification of anchor cable pallet 17 is 300 * 300 * 16mm, and every anchor cable 16 exposes and is no more than 300mm, in addition, in both sides coal side 18, be all provided with the rhombus net 21 that mesh specification is 50 * 50mm, the specification of rhombus net 21 is 3.0 * 1.2m, rhombus net 21 oblique cut graftings are not less than 100mm, wherein, rhombus net that coal column side coal is helped 21 is wire lath, and adopting the rhombus net 21 that face side coal helps is plastic wire.
In order to meet well the air-conditioning requirement of stope upper corner, in the specific implementation, on entity coal column 9, every 50m, offer a horizontal river 10.
Claims (2)
1. a stope U+U type dash system, is characterized in that: the first stope (1) and the second stope (2) that comprise adjacent setting, the outer first U-shaped tunnel that is arranged with at the first stope (1), the first U-shaped tunnel comprises steps on the main air intake lane (3) of work plane (1) both sides, the auxiliary air intake belt-conveying lane (4) of holding concurrently for first go back to, and steps on first of work plane (1) front side for first go back to and cut eye (5), the outer second U-shaped tunnel that is arranged with at the second stope (2), the second U-shaped tunnel comprises the first return airway (6), second return airway (7) of the second stope (2) both sides, and the second stope (2) front side second cut eye (8), hold concurrently first return airway (6) in belt-conveying lane (4) and the second U-shaped tunnel of the auxiliary air intake in the first U-shaped tunnel is adjacent and between the two, be provided with the entity coal column (9) that thickness is 35m, on entity coal column (9), offer several and be communicated with the hold concurrently horizontal river (10) of belt-conveying lane (4) and the first return airway (6) of auxiliary air intake, first of the first U-shaped tunnel is cut eye (5) and second of the second U-shaped tunnel and is cut (8) and be connected and communicate, wherein, the first return airway (6) is for to avoid the impact of back production dynamic pressure need add strong supporting, supporting and protection structure is: 1) roof timbering: in the upper uniform some row's directions of the first return airway top board (11) and tunnel, move towards the vertical muscle twisted steel anchor rod (12) of the left-handed nothing of vertically disposed high strength, the spacing of the vertical muscle twisted steel anchor rod (12) of the left-handed nothing of adjacent two row's high strength is 1000mm, the vertical muscle twisted steel anchor rod (12) of the left-handed nothing of every row's high strength comprises that five diameters are 22mm, length is the vertical muscle twisted steel anchor rod (12) of the left-handed nothing of the high strength of 2400mm, the spacing of the adjacent vertical muscle twisted steel anchor rod (12) of two left-handed nothings of high strength is 1050mm, the lower end of every row's the vertical muscle twisted steel anchor rod (12) of five left-handed nothings of high strength is fixed with a W steel band (13) jointly, and be also fixed with respectively an anchor rod pallet board (14) between the end, lower end of the vertical muscle twisted steel anchor rod (12) of five left-handed nothings of high strength and W steel band (13), the specification of anchor rod pallet board (14) is 120 * 120 * 10mm, the every vertical muscle twisted steel anchor rod (12) of the left-handed nothing of high strength exposes and is no more than 50mm, between W steel band (13) and back (11), also sandwiched is fixed with wire lath (15), and the specification of wire lath (15) is 5.5 * 1.2m, vertical muscle twisted steel anchor rod (12) midline position of the left-handed nothing of adjacent two row's high strength is also provided with row's anchor cable (16), every row's anchor cable (16) comprises that two or three diameters are the anchor cable (16) that 22mm, length are 7400mm, and two anchor cables rows are arranged alternately by row with three anchor cables rows, in two anchor cable rows, the spacing of two anchor cables (16) is 2000mm, and in three anchor cable rows, the spacing of adjacent two anchor cables (16) is 1800mm, in anchor cable row, the lower end of every anchor cable (16) is fixed with anchor cable pallet (17), and the specification of anchor cable pallet (17) is 300 * 300 * 16mm, and every anchor cable (16) exposes and is no more than 300mm, fixedly use a k2335 resin anchoring agent and a z2360 resin anchoring agent during the vertical muscle twisted steel anchor rod (12) of the left-handed nothing of high strength, fixedly use a k2335 resin anchoring agent and two z2360 resin anchoring agents during anchor cable (16), 2) coal side supporting: uniform some row's directions are moved towards the left-handed nothing of vertically disposed high strength with tunnel and indulged muscle twisted steel anchor rod (12) respectively in two coals sides (18), the spacing of the vertical muscle twisted steel anchor rod (12) of the left-handed nothing of adjacent two row's high strength is 1000mm, the vertical muscle twisted steel anchor rod (12) of the left-handed nothing of every row's high strength comprises that three diameters are 22mm, length is the vertical muscle twisted steel anchor rod (12) of the left-handed nothing of the high strength of 2400mm, the spacing of the adjacent vertical muscle twisted steel anchor rod (12) of two left-handed nothings of high strength is 1100mm, the lower end of the every vertical muscle twisted steel anchor rod (12) of the left-handed nothing of high strength is fixed with a steel band pallet (19), the specification of steel band pallet (19) is: 250 * 350 * 5mm, the every vertical muscle twisted steel anchor rod (12) of the left-handed nothing of high strength exposes and is no more than 50mm, midline position between the vertical muscle twisted steel anchor rod (12) of the left-handed nothing of every two row's high strength is provided with row's anchor cable (16), every row's anchor cable (16) comprises the anchor cable that two spacing are 2200mm (16), the lower end of two anchor cables (16) of every row is fixed with a steel bar ladder beam (20) jointly, and be also fixed with respectively an anchor cable pallet (17) between the end, lower end of two anchor cables (16) and steel bar ladder beam (20), the specification of anchor cable pallet (17) is 300 * 300 * 16mm, and every anchor cable (16) exposes and is no more than 300mm, in addition, in both sides coal sides (18), be all provided with the rhombus net that mesh specification is 50 * 50mm (21), the specification of rhombus net (21) is 3.0 * 1.2m, rhombus net (21) oblique cut grafting is not less than 100mm, wherein, the rhombus net (21) that coal column side coal is helped is wire lath, and adopting the rhombus net (21) that face side coal helps is plastic wire.
2. stope U+U type dash system according to claim 1, is characterized in that: entity coal column (9) is upper offers a horizontal river (10) every 50m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220485602.7U CN203476375U (en) | 2012-09-22 | 2012-09-22 | U+U type laneway ventilating system of coalface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220485602.7U CN203476375U (en) | 2012-09-22 | 2012-09-22 | U+U type laneway ventilating system of coalface |
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| CN203476375U true CN203476375U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220485602.7U Withdrawn - After Issue CN203476375U (en) | 2012-09-22 | 2012-09-22 | U+U type laneway ventilating system of coalface |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865092A (en) * | 2012-09-22 | 2013-01-09 | 山西晋城无烟煤矿业集团有限责任公司 | U+U type laneway ventilating system of coalface |
| CN104196554A (en) * | 2014-08-25 | 2014-12-10 | 山西潞安环保能源开发股份有限公司 | U-U-type ventilation method and system for coalfaces |
| CN110454187A (en) * | 2019-07-04 | 2019-11-15 | 内蒙古科技大学 | A kind of roadway layout method improving the Coal Resources in Mine recovery ratio that is opened up by adits |
-
2012
- 2012-09-22 CN CN201220485602.7U patent/CN203476375U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865092A (en) * | 2012-09-22 | 2013-01-09 | 山西晋城无烟煤矿业集团有限责任公司 | U+U type laneway ventilating system of coalface |
| CN104196554A (en) * | 2014-08-25 | 2014-12-10 | 山西潞安环保能源开发股份有限公司 | U-U-type ventilation method and system for coalfaces |
| CN110454187A (en) * | 2019-07-04 | 2019-11-15 | 内蒙古科技大学 | A kind of roadway layout method improving the Coal Resources in Mine recovery ratio that is opened up by adits |
| CN110454187B (en) * | 2019-07-04 | 2021-08-24 | 内蒙古科技大学 | Roadway arrangement method for improving coal resource extraction rate of footrill exploitation mine |
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