CN202690072U - Mining roadway structure capable of preventing corner gas on coal mining work face from accumulating - Google Patents
Mining roadway structure capable of preventing corner gas on coal mining work face from accumulating Download PDFInfo
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- CN202690072U CN202690072U CN 201220048857 CN201220048857U CN202690072U CN 202690072 U CN202690072 U CN 202690072U CN 201220048857 CN201220048857 CN 201220048857 CN 201220048857 U CN201220048857 U CN 201220048857U CN 202690072 U CN202690072 U CN 202690072U
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Abstract
The utility model relates to a mining roadway structure capable of preventing corner gas on a coal mining work face from accumulating. According to the mining roadway structure capable of preventing the corner gas on the coal mining work face from accumulating, a process roadway is added based on a traditional U-shaped mining roadway, the process roadway is arranged at the top of a coal seam, is close to the inner side of a return airway and is parallel to the return airway and an intake airway, and the intake airway is communicated with the return airway and the process roadway through the work face to form two U-shaped ventilating ducts. Full negative pressure ventilation and partial fan ventilation are simultaneously arranged inside the process roadway, and a drill site is arranged inside the process roadway to pump gas and inject water or inhibition liquid to the coal seam. According to the mining roadway structure capable of preventing the corner gas on the coal mining work face from accumulating, the process roadway is added based on the traditional U-shaped mining roadway to form two U-shaped ventilating loops, the return air in a traditional return airway is split, and therefore the corner gas in an air return area is prevented from accumulating. The drill site can be further arranged inside the process roadway to pump gas in the coal seam, an adjacent layer and a goaf or inject water or inhabitation liquid to the coal seam, the purposes of dust reduction and fire prevention are achieved, and the drill site does not interfere with production.
Description
Technical field
The utility model relates to coal mining technique, is specifically related to a kind of stope drift active workings structure of preventing gas from being accumulated at corners on coal faces.
Background technology
In the coal mining, need to keep the ventilation of stope drift active workings smooth and easy, with the safety guaranteeing to construct and the diffusion of Top Corner Gas on Coal Face.Gas Accumulation in Upper-Corner by Pulsed mainly refers to return air district upper corner gas, and the reason of gathering has following several respects: the one, and this place of coal-face upper corner is the goaf air leaking outlet, if return air is not smooth, gas collects in here easily; The 2nd, return air district coal-face upper corner is the vortex, and air forms eddy current here easily; The 3rd, because gas density ratio air is little, so gas has the upwards trend of Yunfu.
The stope drift active workings design that falls behind now is " U " type tunnel, and as shown in Figure 1, air intake lane and return airway and coal-face consist of " U " font, and this design has almost all comprised the above-mentioned possibility of gathering.On this basis, the someone has designed " U+L " type tunnel, as shown in Figure 2, has added a gas-removing lane on the next door of return airway, and compartment is communicated with by several connection roadways between gas-removing lane and the return airway, and the distance between each connection roadway is about 60～100m.When coal-face was positioned at I connection roadway the place ahead, the I connection roadway communicated with the gas-removing lane, and other each lanes block, along with the reach of work plane, and the propelling in goaf, the I connection roadway is blocked by the goaf, and the II connection roadway is opened ... so go down.Because gas all has been discharged to the gas-removing lane, cause the methane accumulation of gas-removing lane to raise, if there is not effective exhaust measure, also dangerous here.The somebody has proposed " Y " type tunnel, as shown in Figure 3, offers a gas-removing lane on the next door, goaf and communicates with return airway, because relatively difficulty of gas-removing lane is offered on the next door, goaf, the gas-removing lane communicates with return airway in addition, becomes the air channel, and gas density is caught fire greatly easily.The somebody has proposed " W " type tunnel, is to leave an intake in the middle of mining coal seam, and as shown in Figure 4, this situation only makes the goaf air leaking scope little, but up and down corners has gas, and it is little to improve purposes.
Summary of the invention
Therefore, problem for gas from being accumulated at corners on coal faces, the utility model provides a kind of stope drift active workings structure of preventing gas from being accumulated at corners on coal faces, this structure consists of two " U " type stope drift active workings, can effectively get rid of upper corner gas, simultaneously also can prevent from catching fire, waterflood path can also be provided.
For achieving the above object, the utility model is taked following technical scheme: a kind of stope drift active workings structure of preventing gas from being accumulated at corners on coal faces, it is characterized in that, on the basis of former " U " type stope drift active workings, increase a technique lane, described technique lane places top, coal seam and inboard near return airway, and is parallel with return airway, air intake lane, described air intake lane is communicated with return airway, technique lane respectively by work plane, consists of two " U " type ventilation stacks; Existing full exhaust ventilation in the described technique lane also arranges the ventilation fan local ventilation simultaneously.
Preferably, the technique lane is positioned at the inboard horizontal range 10～15m of return airway position.
In general, the basal area in technique lane is more smaller than return airway basal area.
Further, also at return airway air damper is set, regulates the air quantity of return airway, combine by the shunting action in technique lane and all pressures effect of air damper, reduce to goaf air leaking and the gas that flows to the upper corner place.
Further, in the technique lane, also be furnished with drill site, mash gas extraction, to coal-bed flooding or annotate resistanceization liquid.
The utility model is owing to take above technical scheme, it has the following advantages: 1, the utility model is on the basis of original " U " type stope drift active workings, a technique lane is set up near distance coal-face return airway top, coal seam, this technique lane not only can consist of a ventilation circuit with the air intake lane, with the return air shunting of former return airway, avoid gathering of return air district upper corner gas.2, can also in the technique lane, arrange drill site, this coal seam of extraction, adjacent layer and goaf gas; Can also drill to coal-bed flooding or notes resistanceization liquid, reach depositing dust and fireproof purpose, not interfere with each other with production.3, the full exhaust ventilation of design adds the part with the ventilation of wind point in the technique lane, has kept ventilating in the technique lane and has stablized.4, in former return airway entrance air damper is set, regulates the shunt volume in return airway and technique lane, effectively prevent Gas Accumulation in Upper-Corner by Pulsed and goaf spontaneous combustion.For the high gas of China, spontaneous combustion coal layer are are effectively prevented and treated methane accumulation and the goaf spontaneous combustion provides theoretical foundation and practical experience, for the comprehensive regulation of mine disaster provides new thinking and approach.
Description of drawings
Fig. 1 is " U " type stope drift active workings design top view;
Fig. 2 is " U+L " type tunnel design top view;
Fig. 3 is " Y " type tunnel design top view;
Fig. 4 is " W " type tunnel design top view;
Fig. 5 is the two cross-sectional views of " U " type stope drift active workings in coal caving mining method of the utility model;
Fig. 6 is the two cross-sectional views of " U " type stope drift active workings in the full-seam mining coal-mining method of the utility model;
Fig. 7 is two " U " type stope drift active workings design of the utility model top view.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described in detail.
Such as Fig. 5, shown in Figure 6, the stope drift active workings structure that the utility model provides is, on the basis of former " U " type stope drift active workings, set up a technique lane 1, it is inboard to be positioned at the coal-face return airway, the about 10～15m of horizontal range, highly be at the top, coal seam, all parallel with air intake lane 2, return airway 3.Difference according to coal-mining method, the particular location in technique lane is also different, according to CFD (Fluid Mechanics Computation) and percolation hydraulic theory, in conjunction with the porous media properties in work plane, goaf, the method for employing numerical simulation is determined, Figure 5 shows that the embodiment of coal caving mining method, technique lane 1 is positioned at the top, coal seam, near and be higher than return airway 3, just be the location of gathering of Top Corner Gas on Coal Face herein, effectively prevented face upper corner angle methane accumulation and goaf coal spontaneous combustion; Figure 6 shows that the embodiment of full-seam mining coal-mining method, technique lane 1 is positioned at the top, coal seam, and is close and contour concordant with return airway 3, main collecting work face gas.
Former " U " type stope drift active workings comprise air intake lane 2 and return airway 3, are communicated with by work plane 4, form " U " type stope drift active workings.After the utility model added technique lane 1, air intake lane 2 was communicated with by work plane 4 with technique lane 1, forms again another " U " type passage, and two ventilation stacks ventilate jointly, thus can be with the gas shunting of wanting to enter in the return airway 3, as shown in Figure 7.
Both the same with return airway 3 in technique lane 1, full exhaust ventilation is arranged; Simultaneously, also the part is provided with ventilation fan 5, carries out local ventilation point and ventilates, so that stable distinguished and admirable of formation in the technique lane is conducive to the discharging of gas.In return airway 3 entrance air damper 6 is set, combines by the shunting action in technique lane and all pressures effect of air damper, reduce to the goaf 7 and leak out.
Can also be in the technique lane 1 interior layout drill site, this coal seam of extraction, adjacent layer and goaf gas, adopt front take out in advance to take out with Bian Caibian combine; Can also drill to coal-bed flooding or notes resistanceization liquid, reach depositing dust and fireproof purpose, not interfere with each other with production.
Above-mentioned drift section for technique lane 1 is long-pending is not strict with, generally slightly smaller for good than return aircourse basal area, can regulate air quantity by air damper is set; Supporting does not have specific (special) requirements yet.
During top coal caving, the gas management in the technique lane both can be managed according to tailentry, also can manage according to special-purpose firedamp drainage tunnel; When adopting other coal-mining methods, the gas management in the technique lane will be managed in strict accordance with tailentry.
The utility model makes face upper corner angle gas by return airway and the shunting of technique lane by the setting in technique lane, and upper corner gas is difficult for gathering, and concentration reduces; Because the return air radius diminishes, and the district of leaking out in goaf reduces, calm being difficult for catches fire in the goaf simultaneously.The full exhaust ventilation of design adds and local ventilates with wind point in the technique lane, and in conjunction with air damper all press, the comprehensive preventive health measures such as gas drainage system, can effectively prevent Gas Accumulation in Upper-Corner by Pulsed and goaf spontaneous combustion, for the high gas of China, spontaneous combustion coal layer are are effectively prevented and treated methane accumulation and the goaf spontaneous combustion provides theoretical foundation and practical experience, for the comprehensive regulation of mine disaster provides new thinking and approach.Drill site also is set in the technique lane, interrupts water filling, but depositing dust and fire prevention, and need not drill from return airway.
Claims (8)
1. stope drift active workings structure of preventing gas from being accumulated at corners on coal faces, it is characterized in that, on the basis of former " U " type stope drift active workings, increase a technique lane, described technique lane places top, coal seam and inboard near return airway, parallel with return airway, air intake lane, described air intake lane is communicated with return airway, technique lane respectively by work plane, consists of two " U " type ventilation stacks; Existing full exhaust ventilation in the described technique lane also arranges the ventilation fan local ventilation simultaneously.
2. a kind of stope drift active workings structure of preventing gas from being accumulated at corners on coal faces as claimed in claim 1 is characterized in that, described technique lane is in the inboard horizontal range 10～15m of described return airway position.
3. a kind of stope drift active workings structure of preventing gas from being accumulated at corners on coal faces as claimed in claim 1 or 2 is characterized in that the basal area in described technique lane is more smaller than return airway basal area.
4. a kind of stope drift active workings structure of preventing gas from being accumulated at corners on coal faces as claimed in claim 1 or 2 is characterized in that, is provided with air damper at described return airway, regulates the air quantity of return airway.
5. a kind of stope drift active workings structure of preventing gas from being accumulated at corners on coal faces as claimed in claim 3 is characterized in that, is provided with air damper at described return airway, regulates the air quantity of return airway.
6. such as claim 1 or 2 or 5 described a kind of stope drift active workings structures of preventing gas from being accumulated at corners on coal faces, it is characterized in that, in described technique lane, also be furnished with drill site, mash gas extraction, to coal-bed flooding or annotate resistanceization liquid.
7. a kind of stope drift active workings structure of preventing gas from being accumulated at corners on coal faces as claimed in claim 3 is characterized in that, also is furnished with drill site in described technique lane, mash gas extraction, to coal-bed flooding or annotate resistanceization liquid.
8. a kind of stope drift active workings structure of preventing gas from being accumulated at corners on coal faces as claimed in claim 4 is characterized in that, also is furnished with drill site in described technique lane, mash gas extraction, to coal-bed flooding or annotate resistanceization liquid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220048857 CN202690072U (en) | 2012-02-15 | 2012-02-15 | Mining roadway structure capable of preventing corner gas on coal mining work face from accumulating |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220048857 CN202690072U (en) | 2012-02-15 | 2012-02-15 | Mining roadway structure capable of preventing corner gas on coal mining work face from accumulating |
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| CN202690072U true CN202690072U (en) | 2013-01-23 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562088A (en) * | 2012-02-15 | 2012-07-11 | 山西汾西矿业（集团）有限责任公司 | Method for preventing gas from being accumulated at corners on coal faces |
| CN106121673A (en) * | 2016-08-11 | 2016-11-16 | 淮南矿业(集团)有限责任公司 | A kind of tunnel structure of colliery system |
| CN106815423A (en) * | 2017-01-10 | 2017-06-09 | 辽宁工程技术大学 | A kind of W types ventilation goaf spontaneous combustion of remaining coal analogy method |
| CN109083677A (en) * | 2018-11-05 | 2018-12-25 | 河南工程学院 | A kind of coal seam goaf gas drainage spontaneous combustion imitative experimental appliance |
| CN109578056A (en) * | 2018-11-25 | 2019-04-05 | 大同煤矿集团有限责任公司 | A kind of administering method about coal mine gob |
| CN111577281A (en) * | 2020-05-22 | 2020-08-25 | 中国矿业大学 | High-gas coal seam coal pillar-free mining and gas control method |
-
2012
- 2012-02-15 CN CN 201220048857 patent/CN202690072U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562088A (en) * | 2012-02-15 | 2012-07-11 | 山西汾西矿业（集团）有限责任公司 | Method for preventing gas from being accumulated at corners on coal faces |
| CN106121673A (en) * | 2016-08-11 | 2016-11-16 | 淮南矿业(集团)有限责任公司 | A kind of tunnel structure of colliery system |
| CN106815423A (en) * | 2017-01-10 | 2017-06-09 | 辽宁工程技术大学 | A kind of W types ventilation goaf spontaneous combustion of remaining coal analogy method |
| CN109083677A (en) * | 2018-11-05 | 2018-12-25 | 河南工程学院 | A kind of coal seam goaf gas drainage spontaneous combustion imitative experimental appliance |
| CN109083677B (en) * | 2018-11-05 | 2023-08-25 | 河南工程学院 | Coal seam goaf gas extraction spontaneous combustion simulation experiment device |
| CN109578056A (en) * | 2018-11-25 | 2019-04-05 | 大同煤矿集团有限责任公司 | A kind of administering method about coal mine gob |
| CN111577281A (en) * | 2020-05-22 | 2020-08-25 | 中国矿业大学 | High-gas coal seam coal pillar-free mining and gas control method |
| CN111577281B (en) * | 2020-05-22 | 2021-07-30 | 中国矿业大学 | High-gas coal seam coal pillar-free mining and gas control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20140215 |