CN106761747A - A kind of stoping method of highly gassy mine anaerobic working face - Google Patents
A kind of stoping method of highly gassy mine anaerobic working face Download PDFInfo
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- CN106761747A CN106761747A CN201611094450.7A CN201611094450A CN106761747A CN 106761747 A CN106761747 A CN 106761747A CN 201611094450 A CN201611094450 A CN 201611094450A CN 106761747 A CN106761747 A CN 106761747A
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- working face
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- anaerobic
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
- E21F17/107—Dams, e.g. for ventilation inflatable
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F3/00—Cooling or drying of air
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/20—Drawing-off or depositing dust
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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)
- Remote Sensing (AREA)
- Air Conditioning Control Device (AREA)
- Ventilation (AREA)
- Wind Motors (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses a kind of stoping method of highly gassy mine anaerobic working face, belong to safety of coal mines production technique field.For the working face that the undisturbed first mining coal seam of highly gassy mine and roof crack do not turn on ground, flexible encapsulated wall is respectively provided with air intake crossheading and haulage gate, nitrogen gas generating system and air-conditioner set are respectively provided with the flexible encapsulated wall of correspondence crossheading, form anaerobic operating environment, gas and temperature monitoring monitoring system are set in excavation, to gas content and temperature real-time monitoring；When the oxygen concentration in excavation is less than 5%, start stoping operation, as flexible encapsulated wall is moved in the propulsion of working face, continuous stoping is to stopping adopting line；When oxygen concentration meets or exceeds 8%, power supply automatically cuts off, and stops production operation；When the temperature in excavation is more than 26 DEG C, the cold measure of pressure is taken, operating ambient temperature is dropped to 15~20 DEG C, effectively prevent gas accident generation, realize working face safe working, easy implementation easy to operate.
Description
Technical field
It is especially a kind of suitable for the one of actual mining the present invention relates to a kind of mine anaerobic working face high winning technology method
The stoping method of highly gassy mine anaerobic working face, the preventing and treating of category mine gas accident and high efficient mining technology field are planted,
Background technology
Gas is one of key factor of harm mine safety production.Threat of the gas to mine safety mainly have blast,
The forms such as prominent and asphyxia, wherein gas and dust explosion and coal and gas prominent seriously threaten personnel in the pit's life and mine sets
The safety applied.Gas explosion not only causes casualties, and seriously destroys roadway facility, interrupts production, or even can also cause
Coal-dust explosion, mine fire and roadway such as collapse at the secondary disaster.According to national Supervisor Bureau of Coal's accident statistics, the death toll of underground one time
More major accident is mainly caused by gas explosion and Gas Outburst, and the whole nation occurs gas accident 1663 altogether within 2001~2013 years
Rise, dead 9126 people is specifically shown in Table 1.
1 2001~2013 years coal mine gas explosion statistics of table
2001~2004 years China's coal-mine gas accidents are constantly in state occurred frequently, become in decline steadily later within 2004
Gesture, but account for national coal mining accident total degree proportion and increasing always；Gas accident death toll declined steadily afterwards in 2003,
Account for national coal mining accident total toll proportion to remain high all the time, it means that the gas control situation that we are faced is still
It is severe.
In recent years, China's pit mining depth is increasing, and gas bearing amount is also sharply increased therewith, causes Gas Disaster
More show and protrude.Therefore, the threat of reduction or solution mash gas to mine safety production is significant.
The content of the invention
Technical problem：The purpose of the present invention is directed to present in existing production technique not enough, there is provided a kind of method is simple,
A kind of stoping method of highly gassy mine anaerobic working face that is easy to operate, overcoming highly gassy mine potential threat.
Technical scheme：The stoping method of highly gassy mine anaerobic working face of the invention, comprises the following steps：
A. the working face that the undisturbed first mining coal seam of selection highly gassy mine and roof crack do not turn on ground；
B. advance support and flexible encapsulated wall are respectively provided with the air intake crossheading and haulage gate of working face, make back production empty
Between with ambient atmosphere completely cut off；
C. nitrogen gas generating system is set on the flexible encapsulated wall in air intake crossheading, by nitrogen gas generating system constantly in closing space
Nitrogen injection, makes working face form anaerobic operating environment, and air-conditioner set is set on the flexible encapsulated wall in haulage gate；
D., gas and temperature monitoring monitoring system are set in excavation, gas content and temperature are supervised in real time
Survey；
E. when the oxygen concentration in excavation is less than 5%, stoping operation is started, as the propulsion of working face moves flexible
Fire dam, untill entrance to a lane that flexible encapsulated wall moves on to air intake crossheading and haulage gate, working face continues back production until stopping adopting
Line.
Described flexible encapsulated wall is made up of wall, flexible air-bag and wheel seat, by flexible air-bag carrying out gas injection and subtracting
Small gas injection speed or the interim note that stops realize sealing and movement.
The distance of the flexible encapsulated wall first advance is d, and the scope of d is 1.5D<d<2D, wherein D are advance support
Length.
The mobile frequency and distance of the flexible encapsulated wall are mutually coordinated with the fltting speed of working face, advance of the face d-
1.5D, flexible encapsulated wall is moved once, and displacement is Δ d, and Δ d meets 0<Δd<0.5D.
Described air-conditioner set includes air conditioner, exhaust ventilation machine and deduster, exhaust ventilation machine and nitrogen gas generating system
Ventilation circuit is formed, air conditioner and deduster are lowered the temperature and dedusting to working face in real time.
Described gas and temperature monitoring monitoring system include the sensing of the 5 groups of test gas contents and temperature being interconnected
Device, 5 groups of sensors are respectively provided at the flexible encapsulated wall in air intake crossheading, at lower corner, working face middle part, at upper corner and fortune
At flexible encapsulated wall in defeated crossheading.
When the oxygen concentration in excavation meets or exceeds 8%, power supply automatically cuts off, and stops production operation.
When the temperature in excavation is more than 26 DEG C, gas and temperature monitoring monitoring system send alarm signal and pass through
Air conditioner takes the cold measure of pressure, operating ambient temperature is dropped to 15~20 DEG C.
Beneficial effect：The present invention compared with prior art, has the following advantages that：
(1) it is simple to operate, easily implement easily to coordinate.During the advance of the face, nitrogen gas generating system and air-conditioner set are according to gas
And temperature monitoring monitoring system real-time regulation, automatically control, it is closed can suitably delayed advance support follow-up then move, it is ensured that fixed sky
Between anaerobic operating environment.
(2) it is closed tight, removable.Using flexible air-bag can make it is closed it is closely knit with roadway surrounding rock contact, sealing effect is good,
And it is closed moved afterwards in real time with the advance of the face, reduce nitrogen making and injection amount.
(3) cooling dedusting, good operating environment.Working face mine dust is uninterruptedly aspirated by air-conditioner set, temperature it is real-time
Regulation and control, create suitable personnel's operation, the working environment of plant equipment operation.
(4) practical, reliability is high.The accidents such as face gas aggregation, ignition and blast are efficiently solved, is ensured
Staff's life security and underground equipment safety.
(5) this extra earning drops.Gas preventing and control and control expense are reduced, working surface production efficiency is improve, enterprise is increased
Economic benefit.
Brief description of the drawings
Fig. 1 is a kind of stoping method arrangement schematic diagram of highly gassy mine anaerobic working face of the invention.
Fig. 2 is flexible encapsulated wall top view.
Fig. 3 is flexible encapsulated wall front view.
In figure：1-working face；2-air intake crossheading；3-haulage gate；4-advance support；5-belt；6-flexible close
Close wall；7-nitrogen gas generating system；8-air-conditioner set；9-gas and temperature monitoring monitoring system；10-wall；11-flexible air-bag；
12-roller；13-wheel seat；The closed belt passage of 14-haulage gate.
Specific embodiment
The invention will be further described for middle embodiment below in conjunction with the accompanying drawings：
As shown in figure 1, the stoping method of highly gassy mine anaerobic working face of the invention, comprises the following steps that：
A. the working face that the undisturbed first mining coal seam of selection highly gassy mine and roof crack do not turn on ground
1；
B. advance support 4 and flexible encapsulated wall 6 are respectively provided with the air intake crossheading 2 and haulage gate 3 of working face 1, are made
Excavation completely cuts off with ambient atmosphere；Described flexible encapsulated wall 6 is made up of wall 10, flexible air-bag 11 and wheel seat 13, is passed through
Gas injection and reduction gas injection speed are carried out to flexible air-bag 11 or the interim note that stops realizes sealing and movement；The advanced work of flexible encapsulated wall 6
Make the distance in face 1 for d, the scope of d is 1.5D<d<2D, wherein D are the length of advance support 4；The mobile frequency of flexible encapsulated wall 6
Secondary and distance is mutually coordinated with the fltting speed of working face 1, and advance of the face d-1.5D, flexible encapsulated wall 6 is moved once, mobile
Distance is Δ d, and Δ d meets 0<Δd<0.5D.Air intake crossheading 2 is used for air intake and haul, and the flexible encapsulated wall 6 installed is similar to wind
Door, can be with split pedestrian；Haulage gate 3 is used to produce coal and return air, and the fortune that belt 5 passes through is left under the flexible encapsulated wall 6 installed
The defeated closed belt passage 14 of crossheading.
C., nitrogen gas generating system 7, the flexible encapsulated wall in haulage gate 3 are set on the flexible encapsulated wall 6 in air intake crossheading 2
Air-conditioner set 8 is set on 6, starts the exhaust ventilation machine in nitrogen gas generating system 7 and air-conditioner set 8, form ventilation circuit, and not between
The nitrogen injection of working face 1 broken to closing.By nitrogen gas generating system 7 constantly to nitrogen injection in closing space, form working face 1
Anaerobic operating environment, described air-conditioner set 8 includes air conditioner, exhaust ventilation machine and deduster, exhaust ventilation machine and system
Nitrogen system 7 forms ventilation circuit, and air conditioner and deduster are lowered the temperature and dedusting to working face in real time.
D., gas and temperature monitoring monitoring system 9 are set in excavation, gas content and temperature are supervised in real time
Survey；Described gas and temperature monitoring monitoring system 9 include the sensor of the 5 groups of test gas contents and temperature being interconnected, 5
Group sensor is respectively provided at the flexible encapsulated wall 6 in air intake crossheading 2, at lower corner, the middle part of working face 1, at upper corner and fortune
At flexible encapsulated wall 6 in defeated crossheading 3；
E. note nitrogen speed and the estimated working face 1 of the closing space size of working face 1 according to nitrogen gas generating system 7 is full of nitrogen
When, start gas and temperature monitoring monitoring system 9, monitor respectively at the flexible encapsulated wall 6 in air intake crossheading 2, at lower corner, work
Make the middle part of face 1, the gas content at the flexible encapsulated wall 6 at upper corner and in haulage gate 3 and temperature conditions, work as excavation
When interior oxygen concentration is less than 5%, workman can just wear oxygen breathing apparatus into working face 1, start stoping operation, work as excavation
When interior oxygen concentration meets or exceeds 8%, power supply automatically cuts off, and stops production operation；When oxygen concentration is reduced to below 5%,
Working face 1 resumes production；
F. with the propulsion movement flexible encapsulated wall 6 of working face 1, until flexible encapsulated wall 6 moves on to air intake crossheading 2 and transport
Untill entrance to a lane of crossheading 3, now working face 1 continues back production until stopping adopting line, and working face extraction terminates.
In production process, start the air conditioner and deduster in air-conditioner set 8, reduce the mine dust density of working face 1, regulation
Between 15~20 DEG C, maximum temperature must not exceed 26 DEG C to the temperature of working face 1；When the temperature of working face 1 is more than 26 DEG C, gas
And temperature monitoring monitoring system 9 sends alarm signal and takes the cold measure of pressure by air-conditioner set 8, under making operating ambient temperature
It is down to 15~20 DEG C；
Advance support length D is more than apart from d due to the first advance 1 of shifting flexible encapsulated wall 6, working face 1 is not being influenceed
Can suitably delayed mobile flexible encapsulated wall 6 in the case of normal propulsion.
As shown in Figures 2 and 3, flexible encapsulated wall 6 includes the wheel seat 13 with roller 12, and wheel seat 13 is provided with wall 10,
Wall 10 is formed around flexible air-bag 11, and wheel seat 13 is connected with wall 10 by axle, wheel seat 13 can be with pivoting.
The wheel seat 13 of flexible encapsulated wall 6 is rotated up, roller 12 is departed from roadway floor, by gas injection equipment (such as wind
Machine) to the uninterrupted gas injection of flexible air-bag 11 at the edge of flexible encapsulated wall 6, it is ensured that flexible encapsulated wall 6 contacts tight with roadway surrounding rock,
Working face is set to completely cut off to form closing space with ambient atmosphere.
Wheel seat 13 is rotated down, roller 12 is contacted roadway floor, it is appropriate to reduce gas injection speed or stop note temporarily, it is with pressure
Mobile flexible encapsulated wall 6.The mobile frequency and distance of flexible encapsulated wall 6 are mutually coordinated with the fltting speed of working face 1, working face
Propulsion d-1.5D, flexible encapsulated wall 6 is moved once, and displacement is Δ d, and Δ d meets 0<Δd<0.5D.
Claims (8)
1. a kind of stoping method of highly gassy mine anaerobic working face, it is characterised in that comprise the following steps：
A. the working face (1) that the undisturbed first mining coal seam of selection highly gassy mine and roof crack do not turn on ground；
B. advance support (4) and flexible encapsulated wall are respectively provided with the air intake crossheading (2) and haulage gate (3) of working face (1)
(6) excavation, is made to completely cut off with ambient atmosphere；
C., nitrogen gas generating system (7) is set on the flexible encapsulated wall (6) in air intake crossheading (2), by nitrogen gas generating system (7) constantly to envelope
Nitrogen injection in space is closed, working face (1) is formed anaerobic operating environment, on the flexible encapsulated wall (6) in haulage gate (3)
Air-conditioner set (8) is set；
D., gas and temperature monitoring monitoring system (9) are set in excavation, real-time monitoring is carried out to gas content and temperature；
E. when the oxygen concentration in excavation is less than 5%, stoping operation is started, as the propulsion of working face (1) moves flexible
Fire dam (6), untill flexible encapsulated wall (6) moves on to entrance to a lane of air intake crossheading (2) and haulage gate (3), working face (1) after
Continuous back production is until stop adopting line.
2. the stoping method of a kind of highly gassy mine anaerobic working face according to claim 1, it is characterised in that：Described
Flexible encapsulated wall (6) is made up of wall (10), flexible air-bag (11) and wheel seat (13), and gas injection is carried out by flexible air-bag (11)
Realize sealing and mobile with reducing gas injection speed or stopping note temporarily.
3. the stoping method of a kind of highly gassy mine anaerobic working face according to claim 1, it is characterised in that：It is described soft
Property fire dam (6) first advance (1) distance be d, the scope of d is 1.5D<d<2D, wherein D are the length of advance support (4)
Degree.
4. the stoping method of a kind of highly gassy mine anaerobic working face according to claim 1, it is characterised in that：It is described soft
The mobile frequency and distance of property fire dam (6) are mutually coordinated with the fltting speed of working face (1), and advance of the face d-1.5D is soft
Property fire dam (6) it is mobile once, displacement is Δ d, and Δ d meets 0<Δd<0.5D.
5. the stoping method of a kind of highly gassy mine anaerobic working face according to claim 1, it is characterised in that：Described
Air-conditioner set (8) includes air conditioner, exhaust ventilation machine and deduster, and exhaust ventilation machine forms ventilation with nitrogen gas generating system (7)
Loop, air conditioner and deduster are lowered the temperature and dedusting to working face in real time.
6. the stoping method of a kind of highly gassy mine anaerobic working face according to claim 1, it is characterised in that：Described
Gas and temperature monitoring monitoring system (9) include 5 groups of test gas contents being interconnected and the sensor of temperature, 5 groups of sensings
Device be respectively provided at flexible encapsulated wall (6) place in air intake crossheading (2), at lower corner, working face (1) middle part, at upper corner and fortune
Flexible encapsulated wall (6) place in defeated crossheading (3).
7. the stoping method of a kind of highly gassy mine anaerobic working face according to claim 1, it is characterised in that：Work as back production
When oxygen concentration in space meets or exceeds 8%, power supply automatically cuts off, and stops production operation.
8. the stoping method of a kind of highly gassy mine anaerobic working face according to claim 1, it is characterised in that：Work as back production
When temperature in space is more than 26 DEG C, gas and temperature monitoring monitoring system (9) are sent alarm signal and are taken by air conditioner
Cold measure is forced, operating ambient temperature is dropped to 15~20 DEG C.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094450.7A CN106761747B (en) | 2016-12-01 | 2016-12-01 | A kind of stoping method of highly gassy mine anaerobic working face |
| AU2017370096A AU2017370096B2 (en) | 2016-12-01 | 2017-11-13 | Stoping method for oxygen-free working face of high gassy mine |
| PCT/CN2017/110669 WO2018099261A1 (en) | 2016-12-01 | 2017-11-13 | Stoping method for oxygen-free working surface of highly gaseous mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094450.7A CN106761747B (en) | 2016-12-01 | 2016-12-01 | A kind of stoping method of highly gassy mine anaerobic working face |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106761747A true CN106761747A (en) | 2017-05-31 |
| CN106761747B CN106761747B (en) | 2019-01-11 |
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| CN201611094450.7A Active CN106761747B (en) | 2016-12-01 | 2016-12-01 | A kind of stoping method of highly gassy mine anaerobic working face |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN106761747B (en) |
| AU (1) | AU2017370096B2 (en) |
| WO (1) | WO2018099261A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100624A (en) * | 2017-04-28 | 2017-08-29 | 辽宁工程技术大学 | A kind of coal anaerobic recovery method |
| CN107387163A (en) * | 2017-09-14 | 2017-11-24 | 西安科技大学 | A kind of underworkings from walk fire dam system |
| WO2018099261A1 (en) * | 2016-12-01 | 2018-06-07 | 中国矿业大学 | Stoping method for oxygen-free working surface of highly gaseous mine |
| CN109707380A (en) * | 2018-11-09 | 2019-05-03 | 内蒙古福城矿业有限公司 | A kind of coal anaerobic recovery method |
| CN112012782A (en) * | 2020-07-15 | 2020-12-01 | 陕西麟北煤业开发有限责任公司 | Advanced closed area gas prevention and control technology for air inlet and return roadway of fully mechanized caving face |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109470B (en) * | 2021-11-18 | 2024-04-02 | 中国矿业大学 | Accurate measurement system and method for air quantity of mine tunnel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107387163A (en) * | 2017-09-14 | 2017-11-24 | 西安科技大学 | A kind of underworkings from walk fire dam system |
| CN107387163B (en) * | 2017-09-14 | 2019-02-22 | 西安科技大学 | A kind of underworkings is from walking fire dam system |
| CN109707380A (en) * | 2018-11-09 | 2019-05-03 | 内蒙古福城矿业有限公司 | A kind of coal anaerobic recovery method |
| CN112012782A (en) * | 2020-07-15 | 2020-12-01 | 陕西麟北煤业开发有限责任公司 | Advanced closed area gas prevention and control technology for air inlet and return roadway of fully mechanized caving face |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2017370096B2 (en) | 2019-06-27 |
| AU2017370096A1 (en) | 2018-11-22 |
| CN106761747B (en) | 2019-01-11 |
| WO2018099261A1 (en) | 2018-06-07 |
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