CN102061919B - Co-mining tunneling method of seam roadway gas - Google Patents
Co-mining tunneling method of seam roadway gas Download PDFInfo
- Publication number
- CN102061919B CN102061919B CN 200910234710 CN200910234710A CN102061919B CN 102061919 B CN102061919 B CN 102061919B CN 200910234710 CN200910234710 CN 200910234710 CN 200910234710 A CN200910234710 A CN 200910234710A CN 102061919 B CN102061919 B CN 102061919B
- Authority
- CN
- China
- Prior art keywords
- gas
- roadway
- sealed door
- tunneling method
- heading
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Ventilation (AREA)
Abstract
The invention discloses a co-mining tunneling method of seam roadway gas. The port of a roadway is sealed to form a sealed space, therefore air outside the roadway can not enter the space, so that the concentration of the gas in the roadway is above 20%, the concentration of the oxygen in the roadway is lower than 12%, and gas loses explosion capability. A drawing pipe is connected to release high-concentration gas released in a working space. In order to prevent high pressure from forming when coal and gas extrude in the roadway, a circular arc-shaped pressure relief roadway is dug on the opening end of the roadway, and high-pressure gas generated by extrusion can be removed. An air conditioning system is arranged in the roadway to guarantee proper environment in the roadway, and workers work in the sealed space under the condition of prepared safety protection. By utilizing the roadway tunneling method, the problem of gas explosion is fundamentally solved, fire hazard danger is also eliminated, and the damage to a human body caused by respirable dust is eliminated; and meanwhile, because the roadway does not have explosion danger, so that the co-mining tunneling method provided by the invention has no anti-explosion requirement on equipment, and has a good popularization value.
Description
Technical field
The present invention relates to a kind of heading driving method, especially compose and deposit evenly, without the good coal seam of the sealing of major fault, in heading, form a space that is full of methane gas, make oxygen concentration be lower than 12%, gas density is higher than 20% and lose in the situation of explosion danger, carry out security protection after, enter and implement the driving method that heading coal gas is adopted altogether in the tunnel.
Background technology
When the driving heading, easily cause gas exceeding limit, in dangerous seam with potential, implement the tunnelling operation, easily cause coal and Gas Outburst, outstanding a large amount of gas cause the dead group of group to hinder serious accident in case blast will bring grievous injury to mine.At present domestic, the dead group of group hinders accident and basically occurs in the gas explosion accident.Traditional control gas explosion technology, although can play certain preventive and therapeutic effect, but owing to gushing out continuously and the ventilation unstability of gas, in addition sporadic gas ejection or coal and Gas Outburst, all so that gas density probably be within the explosion limit, after running into naked light etc. and gas explosion occurs.Present control gas explosion method does not fundamentally stop gas explosion.
The coal-bed gas reserves of China reach 35,000,000,000,000 m
3But utilization rate is but always very low, and most of gas is too low owing to concentration, and directly is discharged in the atmosphere, and gas is a kind of greenhouse gases, directly enters atmosphere will cause climate warming, destroys ecological environment.Simultaneously, gas also is a kind of clean energy resource, and its calorific value approximately is 3 times of hydrogen, and China is energy scarcity type country, and the utilization rate that how to improve gas is the thing of the task of top priority, gas take full advantage of a growth point that can become national economy.
Summary of the invention
The objective of the invention is the problem for the prior art existence, a kind of co-mining tunneling method of seam roadway gas is provided, port by airtight heading, so that be full of high concentration gas gas in the tunnel, in the situation that gas loses explosion hazard, directly extraction is used, and implements simultaneously driving in the tunnel of high concentration gas gas.
Co-mining tunneling method of seam roadway gas of the present invention:
A, after bord-up driving is finished, tunnel successively haulage drift and heading in from bord-up to the coal seam;
B, in heading interior construction one air conditioning cavern, and in the air conditioning cavern, install successively booster, ventilating duct 15, air-conditioning and cleaner;
C, install the twice sealed door at interval, haulage drift entrance;
D, install the gas drainage pipeline that leads to heading in haulage drift inside, gas drainage pipeline passes the twice sealed door, implements gas drainage under suction, makes the air pressure in the confined space be about an atmospheric pressure;
E, the indoor nitrogen that is filled with of the notes nitrogen between the twice sealed door, the pressure of nitrogen is higher than ambient pressure 5～200Pa;
F, to the inner nitrogen injection of heading, and by gas drainage pipeline extraction gas wherein, until the inner oxygen concentration in tunnel is lower than 12%;
G, unlatching ventilation fan, air-conditioning and cleaner are made circulated air, to reduce temperature and the dust concentration in the enclosure space;
H, workman are carrying out under the condition of security protection, enter and implement digging operation in the enclosure space;
Gas and oxygen concentration in i, the Real-Time Monitoring exploitation process in the enclosure space are guaranteeing that gas density is higher than 20%, and oxygen concentration is lower than and realizes under 12% the condition that coal gas adopts altogether.
The supporting capacity of described sealed door is not less than 1MPa.
When there is outburst danger in definite coal seam, after the bord-up driving is finished, tunnel again a return aircourse, tunnel the arc Relieving way that is connected with heading from the return aircourse; Safe sealed door is set in Relieving way, guarantees not have methane gas loss in the enclosure space; Safe sealed door in the Relieving way is together or twice, when the twice safe sealed door is arranged, between the indoor nitrogen that is filled with of notes nitrogen so that the pressure of nitrogen is higher than ambient pressure 5～200Pa; The supporting capacity of described safe sealed door is 0.05～0.2MPa; In the return aircourse, with arc Relieving way intersection inlet side the exploiting field sealed door is set.
Beneficial effect: by airtight heading, in heading, form an enclosure space, so that gas density loses explosion danger considerably beyond 20%, can effectively play the effect that mine prevents gas explosion, avoid because the malignant event that the dead group of the group that gas explosion causes hinders occurs.Because the rising of the inner gas density of enclosure space so that oxygen concentration reduces, can suppress spontaneous combustionof coal, suppresses the generation of mine fire, avoids producing toxic and harmful because of mine fire, and the people is caused harm.The various material corrosions that use in the mine simultaneously slow down, so that prolong the application life of various materials.Because gas is within the explosion ratio scope, so that the electric equipment in the enclosure space need not is explosion-proof, all electric equipments that ground can be used can both use within airtight scope.The constructor is carrying out under the condition of security protection, enters and implements operation in the tunnel.The direct extraction of methane of the inner high concentration in tunnel can be used, and avoids discharge of methane and the destruction of causing energy loss and ecological environment.
Description of drawings
Fig. 1 dangerous seam with potential coal gas is adopted the tunnelling arrangement diagram altogether
Fig. 2 is non-, and dangerous seam with potential coal gas is adopted the tunnelling arrangement diagram altogether
Fig. 3 air conditioning cavern 11 partial enlarged drawings
Among the figure: the 1-sealed door; The 2-safe sealed door; 3-annotates the nitrogen chamber; 4-exploiting field sealed door; The 5-bord-up; 6-Special back air way; The 7-heading; The 8-coal seam; The 9-haulage drift; The 10-Relieving way; 11-air conditioning cavern; The 12-ventilation fan; The 13-air-conditioning; The 14-cleaner; The 15-ventilating duct.
The specific embodiment
Embodiment one, Fig. 1 Fig. 3 Fig. 4 are shown in Figure 5, when the coal seam when outburst hazard is identified without outburst danger, the co-mining tunneling method of seam roadway gas step is as follows:
A, shown in Figure 1, after bord-up 5 driving is finished, from bord-up 5 to the coal seam 8 interior driving headings 7;
B, in heading 7 interior constructions one air conditioning cavern 11, and in air conditioning cavern 11, install successively booster 12, ventilating duct 15, air-conditioning 13 and cleaner 14;
C, install can pass through mine car and pedestrian's sealed door 1 of twice at interval, heading 7 entrance, make the bank form a confined space, the supporting capacity of twice sealed door 1 requires to be not less than 1MPa.
D, at heading 7 laid inside gas drainage pipelines, gas drainage pipeline passes twice sealed door 1, the inner gas of drainage roadway 7 enclosure spaces, and the air pressure of controlling in the confined space by the speed that control draws out methane is about an atmospheric pressure;
Be filled with nitrogen in e, the notes nitrogen chamber 3 between twice sealed door 1, the pressure of nitrogen is higher than ambient pressure 5～200Pa, and methane gas enters and annotates nitrogen chamber 3 when avoiding current mine car or pedestrian.
F, the 7 driving initial stages of heading need to be to its inner nitrogen injection, and by gas drainage pipeline extraction gas wherein, displacement heading 7 inner airs, until heading 7 inner oxygen concentrations stop to annotate nitrogen when being lower than 12%, this moment, inside, tunnel lost explosion hazard;
G, open ventilation fan 12, air-conditioning 13 and cleaner 14, distinguished and admirablely deliver to the digging laneway inner termination along ventilating duct 15 after treatment, and return from the tunnel, form circulated air, to reduce temperature and the dust concentration in the enclosure space.When the temperature in the enclosure space is not more than 30 ℃, air-conditioning 13 can be do not opened, when visibility can not opened cleaner 14 when 50m is above, when air-conditioning 13 and cleaner 14 are not opened, ventilation fan 12 can be do not opened.
H, workman enter under carrying out the condition of security protection and implement operation in the enclosure space;
Gas and oxygen concentration in i, the Real-Time Monitoring exploitation process in the enclosure space are guaranteeing that gas density is higher than 20%, and oxygen concentration is lower than and realizes under 12% the condition that coal gas adopts altogether.
Embodiment two, Fig. 2 Fig. 3 Fig. 4 are shown in Figure 5, when the coal seam identifies that through outburst hazard when outburst danger was arranged, the co-mining tunneling method of seam roadway gas step was as follows:
A, after bord-up 5 driving is finished, tunnel again a return aircourse 6, tunnel successively haulage drift 9 and heading 7 from bord-up 5 to the coal seam in 8; The 6 arc Relieving ways 10 that are connected with heading 7 of driving from the return aircourse are to reduce the distinguished and admirable resistance that flows to arc Relieving way 10 from section tailgate 14 or section haulage way 7.Ventilate and normal the use in the situation that do not affect, can be in the return aircourse 6 inside, and the weather side in Relieving way 10 and return aircourse 6 intersections is installed exploiting field sealed door 4, prevent from the distinguished and admirable reverse in whole exploiting field that gases at high pressure may cause is occuring to give prominence to, exploiting field sealed door 4 can stay establishes air regulator for regulating circulation of air.
B, in heading 7 interior constructions one air conditioning cavern 11, and in air conditioning cavern 11, install successively booster 12, ventilating duct 15, air-conditioning 13 and cleaner 14;
C, install can pass through mine car and pedestrian's sealed door 1 of twice at haulage drift 9 interior intervals, make the bank form a confined space, the supporting capacity of twice sealed door 1 requires to be not less than 1MPa.At one of Relieving way 10 interior setting or twice safe sealed door 2, lithology is more stable around the tunnel, need only just can stop gas leakage by one safe sealed door 2, then can adopt safe sealed door 2 one; Lithology is unstable around the tunnel, need to install twice safe sealed door 2, and the supporting capacity of safe sealed door 2 is 0.05～0.2MPa, guarantees when being impacted that safe sealed door 2 destroys and sealed door 1 can not destroy.
D, lay gas drainage pipeline afterwards, gas drainage pipeline passes twice sealed door 1, the inner gas of drainage roadway 7 enclosure spaces, and the air pressure that the speed that draws out methane by control or negative pressure are controlled in the confined space is about an atmospheric pressure;
Be filled with nitrogen in e, the notes nitrogen chamber 3 between twice sealed door 1, make the pressure of nitrogen be higher than ambient pressure 5～200Pa, methane gas enters and annotates nitrogen chamber 3 when avoiding current mine car or pedestrian, and then to bord-up 5 internal leakage; When twice safe sealed door 2 is installed in Relieving way 10 inside, also need to the notes nitrogen chamber 3 interior nitrogen injections between the twice safe sealed door 2, so that nitrogen pressure is higher than external atmosphere pressure 5～200Pa.
F, need to be to its inner nitrogen injection at the 7 driving initial stages of heading, and by gas drainage pipeline extraction gas wherein, displacement heading 7 internal gas are until heading 7 inner oxygen concentrations stop to annotate nitrogen when being lower than 12%;
G, open ventilation fan 12, air-conditioning 13 and cleaner 14, distinguished and admirablely deliver to the digging laneway inner termination along ventilating duct 15 after treatment, and return from the tunnel, form circulated air, to reduce temperature and the dust concentration in the enclosure space.When the temperature in the enclosure space is not more than 30 ℃, air-conditioning 13 can be do not opened, when visibility can not opened cleaner 14 when 50m is above, when air-conditioning 13 and cleaner 14 are not opened, ventilation fan 12 can be do not opened.
H, workman enter under carrying out the condition of security protection and implement operation in the enclosure space;
Gas and oxygen concentration in i, the Real-Time Monitoring exploitation process in the enclosure space are guaranteeing that gas density is higher than 20%, and oxygen concentration is lower than and realizes under 12% the condition that coal gas adopts altogether.
Owing to being higher than 20% in the inner gas density of enclosure space, therefore can not blast, the various equipment that use in enclosure space need not explosion-proof; Simultaneously because the inner oxygen concentration of enclosure space is lower than 12%, so that various burning damage is slack-off, goaf 13 interior fires are also retarded, so can reduce inputs anti-oxidation at metal and control goaf 13 fire.
Claims (7)
1. co-mining tunneling method of seam roadway gas is characterized in that:
A, after bord-up (5) driving is finished, tunnel successively haulage drift (9) and heading (7) in from bord-up (5) to the coal seam;
B, in heading (7) interior construction one air conditioning cavern (11), and in air conditioning cavern (11), install successively booster (12), ventilating duct (15), air-conditioning (13) and cleaner (14);
C, install twice sealed door (1) at haulage drift (9) interval, entrance;
D, install the gas drainage pipeline that leads to heading (7) in haulage drift (9) inside, gas drainage pipeline passes twice sealed door (1), implements gas drainage under suction, makes the air pressure in the confined space be about an atmospheric pressure;
Be filled with nitrogen in e, the notes nitrogen chamber (3) between twice sealed door (1), the pressure of nitrogen is higher than ambient pressure 5～200Pa;
F, to the inner nitrogen injection of heading (7), and by gas drainage pipeline extraction gas wherein, until the inner oxygen concentration in tunnel is lower than 12%;
G, unlatching booster (12), air-conditioning (13) and cleaner (14) are made circulated air, to reduce temperature and the dust concentration in the confined space;
H, workman are carrying out under the condition of security protection, enter and implement digging operation in the confined space;
Gas and oxygen concentration in i, the Real-Time Monitoring exploitation process in the confined space are guaranteeing that gas density is higher than 20%, and oxygen concentration is lower than and realizes under 12% the condition that coal gas adopts altogether.
2. co-mining tunneling method of seam roadway gas according to claim 1, it is characterized in that: the supporting capacity of described sealed door (1) is not less than 1MPa.
3. co-mining tunneling method of seam roadway gas according to claim 1, it is characterized in that: when there is outburst danger in definite coal seam, after bord-up (5) driving is finished, tunnel again a return aircourse (6), the arc Relieving way (10) that (6) driving is connected with heading (7) from the return aircourse.
4. co-mining tunneling method of seam roadway gas according to claim 3 is characterized in that: safe sealed door (2) is set in arc Relieving way (10), guarantees not have methane gas loss in the confined space.
5. according to claim 3 or 4 described co-mining tunneling method of seam roadway gas, it is characterized in that: the safe sealed door (2) in the arc Relieving way (10) is one or twice, when twice safe sealed door (2) is arranged, between notes nitrogen chamber (3) in be filled with nitrogen so that the pressure of nitrogen is higher than ambient pressure 5～200Pa.
6. co-mining tunneling method of seam roadway gas according to claim 5, it is characterized in that: the supporting capacity of described safe sealed door (2) is 0.05～0.2MPa.
7. co-mining tunneling method of seam roadway gas according to claim 3 is characterized in that: with arc Relieving way (10) intersection inlet side exploiting field sealed door (4) is set in return aircourse (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910234710 CN102061919B (en) | 2009-11-12 | 2009-11-12 | Co-mining tunneling method of seam roadway gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910234710 CN102061919B (en) | 2009-11-12 | 2009-11-12 | Co-mining tunneling method of seam roadway gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102061919A CN102061919A (en) | 2011-05-18 |
| CN102061919B true CN102061919B (en) | 2013-02-13 |
Family
ID=43997391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910234710 Active CN102061919B (en) | 2009-11-12 | 2009-11-12 | Co-mining tunneling method of seam roadway gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102061919B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536305B (en) * | 2012-03-06 | 2014-03-26 | 中国矿业大学 | Method for increasing permeability of inert gas and extracting gas |
| CN102587960A (en) * | 2012-03-22 | 2012-07-18 | 中国矿业大学 | Arrangement method of high gas coal seam extraction working face roadway |
| CN103397882B (en) * | 2013-08-08 | 2015-12-23 | 张兆银 | A kind of coal-mining method and mine structure preventing gas explosion in underground coal mines and burning |
| CN104131815B (en) * | 2014-07-18 | 2016-03-02 | 山西晋城无烟煤矿业集团有限责任公司 | Full-mechanized roadway cross-operation construction technology |
| CN106761747B (en) * | 2016-12-01 | 2019-01-11 | 中国矿业大学 | A kind of stoping method of highly gassy mine anaerobic working face |
| CN109236353B (en) * | 2018-09-21 | 2020-04-03 | 中铁十六局集团有限公司 | Coal uncovering outburst prevention construction method for high gas tunnel to penetrate through coal seam |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19628367A1 (en) * | 1996-07-13 | 1998-01-15 | Ruhrkohle Ag | Coal-cutting sequence employed in underground mining |
| DE19706879A1 (en) * | 1997-02-21 | 1998-08-27 | Rag Ag | Method of planning caverns or hollow cavities for landfill in tectonically loaded mountain |
| CN1412416A (en) * | 2002-09-30 | 2003-04-23 | 山西潞安环保能源开关股份有限公司王庄煤矿 | Working face J-type ventilating system |
| CN101025085A (en) * | 2007-03-28 | 2007-08-29 | 闫振东 | Method for coal mine downhole reproduction and back production |
| CN101498225A (en) * | 2009-02-24 | 2009-08-05 | 太原理工大学 | U+I type ventilating system for top-coal caving face |
-
2009
- 2009-11-12 CN CN 200910234710 patent/CN102061919B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19628367A1 (en) * | 1996-07-13 | 1998-01-15 | Ruhrkohle Ag | Coal-cutting sequence employed in underground mining |
| DE19706879A1 (en) * | 1997-02-21 | 1998-08-27 | Rag Ag | Method of planning caverns or hollow cavities for landfill in tectonically loaded mountain |
| CN1412416A (en) * | 2002-09-30 | 2003-04-23 | 山西潞安环保能源开关股份有限公司王庄煤矿 | Working face J-type ventilating system |
| CN101025085A (en) * | 2007-03-28 | 2007-08-29 | 闫振东 | Method for coal mine downhole reproduction and back production |
| CN101498225A (en) * | 2009-02-24 | 2009-08-05 | 太原理工大学 | U+I type ventilating system for top-coal caving face |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102061919A (en) | 2011-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102061918B (en) | Coal mining method for co-mining gas in mine | |
| CN102061919B (en) | Co-mining tunneling method of seam roadway gas | |
| CN103924956B (en) | A kind of lump coal exploitation Advance presplitting method | |
| US20150322788A9 (en) | Apparatus and method for storing waste material | |
| CN201723246U (en) | Ventilating structure for pumping and exhausting gas at coal face | |
| CN106014480B (en) | A kind of Single thick coal seam Gas Full-Mechanized Caving Face cooperates with administering method with coal spontaneous combustion | |
| CN109578056B (en) | Treatment method for coal mine goaf | |
| CN102373942B (en) | Air curtain and water mist linked system for preventing and controlling dust on comprehensive excavation surfaces | |
| CN203452824U (en) | Ventilating system for city dual-layer mountain tunnel | |
| CN109751072A (en) | A kind of goaf fireproof fire-extinguishing system | |
| CN106761747A (en) | A kind of stoping method of highly gassy mine anaerobic working face | |
| CN102116171B (en) | Method for rapid discharge of gas in tunnel | |
| AU2018200880A1 (en) | System and method for ventilating an underground mine | |
| CN205387929U (en) | High -gas coal mine gas drainage system | |
| CN204591331U (en) | The mine development end dash system of adjoint high-concentration hydrogen sulfide and gas | |
| CN102128047B (en) | Gas-slag separation and recovering system for drilling construction | |
| CN103670497A (en) | Gas treatment method used when tunneled underground coal mine roadway is communicated with abandoned roadway | |
| CN201786385U (en) | A structure for preventing outburst of coal and gas | |
| CN209838473U (en) | Gas surface discharge device for gas tunnel | |
| CN203347841U (en) | Arrangement structure of smoke-proof system of tunnel emergency exit | |
| CN202348316U (en) | Air screen and water mist linkage system for preventing fully mechanized excavation face dusts | |
| CN106194241A (en) | The Stress management systems of gas and method in colliery | |
| Zunyu | Study on Gas Drainage Technology of Opening Closed Roadway | |
| CN106609677A (en) | A gas extraction and discharge construction method | |
| CN110792466A (en) | Fire prevention and extinguishing method for mining in coal mine fire area |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |