CN101749045B - High-efficiency tunneling gas control method for high outburst mine coal roadway - Google Patents
High-efficiency tunneling gas control method for high outburst mine coal roadway Download PDFInfo
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- CN101749045B CN101749045B CN2009102599261A CN200910259926A CN101749045B CN 101749045 B CN101749045 B CN 101749045B CN 2009102599261 A CN2009102599261 A CN 2009102599261A CN 200910259926 A CN200910259926 A CN 200910259926A CN 101749045 B CN101749045 B CN 101749045B
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- 239000003245 coal Substances 0.000 title claims abstract description 111
- 230000005641 tunneling Effects 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000007569 slipcasting Methods 0.000 claims description 17
- 238000009826 distribution Methods 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 238000000605 extraction Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000004047 hole gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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Abstract
The invention discloses a high-efficiency tunneling gas control method for a high outburst mine coal roadway, which comprises the following steps: before the working surface of the outburst mine coal roadway is used for tunneling, respectively forming a drill site at two sides of the coal roadway, perforating overlong deep holes from each drill site along the tunneling direction of the coal roadway, and carrying out grouting treatment so that gas in the grouting range along the tunneling direction of the coal roadway is relatively isolated from the surrounding environment, thereby forming a relatively closed roadway tunneling space, eliminating the potential safety hazard of outburst in the roadway tunneling process, and overcoming the original defect that as the time for pumping and discharging the gas is too long, the whole tunneling efficiency is very low; meanwhile, the method of the invention realizes high-efficiency tunneling in the premise of safety and has simple operation of construction processes; and the method is suitable for being popularized and utilized under various conditions of occurrence of high outburst coal seams.
Description
Technical field
The present invention relates to a kind of coal road gas control technology, relate in particular to a kind of high efficiency tunneling gas control method for high outburst mine coal roadway, belong to the control of coalmine gas technical field.
Background technology
China Mine Geological complicated condition, particularly China west and south mine are complicated and belong to the gas projecting mine mostly.High prominent mine is in tunneling process; For the outstanding disaster that causes of control gas takes place; Often when driving face, carry out deep hole gas drainage under suction release at driving face earlier; After treating that gas pressure is reduced to the regulation that meets " Safety of Coal Mine Production rules ", carry out the coal road driving again, thereby the guarantee production safety is carried out; Perhaps top (end) plate along coal road tunnels a stone head in addition; In stone head, coal bed drilling is carried out extraction before the gas overpressure; Make in the coal road tunneling process gas pressure all the time in the prescribed limit of " Safety of Coal Mine Production rules ", avoided the outstanding disaster that takes place of gas.The principle of these two kinds of methods all be earlier to driving face draw out methane, release, and then carry out the coal road driving, belong to and comparatively successfully administer the outstanding mode of gas at present, its application is also comparatively extensive.
But the inventor finds; Also there is following problem in the gas control technology in the prominent mine coal roadway driving of existing height: adopt extraction in advance; Treat that gas reaches the mode of tunneling again in the scope of regulation and makes the gas drainage under suction overlong time, need a large amount of stand-by period just can excavate, make drivage efficiency generally lower; Have a strong impact on the balance of preparation and winning work of whole mine, be unfavorable for High-efficient Production.
How on the basis that guarantees the safety driving, can enhance productivity effectively again, prevent to take place in the tunnelling process that gas is outstanding just to become the problem that the present invention need solve.
Summary of the invention
In view of the deficiency of above-mentioned prior art, the present invention aims to provide the outstanding method of control gas in the projecting coal bed coal road tunneling process of a kind of high gas, and it is safe, efficient to guarantee that again the projecting coal bed coal road tunneling process of high gas carries out simultaneously.
The present invention realizes through following technical scheme:
High efficiency tunneling gas control method for high outburst mine coal roadway comprises:
Before A, the high gas projecting mine coal road driving, help respectively to do a drill site earlier, in drill site, beat ultralong deep hole, the tunnelling footage that the length of ultralong deep hole is estimated greater than coal road along the coal road tunneling direction at coal road two;
B, ultralong deep hole is carried out slip casting handle;
C, accomplish the processing of advance borehole on the coal road work plane, utilize advance borehole that the coal body in the coal road driving scope is carried out gas drainage under suction, release, again coal road is efficiently tunneled after reaching required standard.
High efficiency tunneling gas control method for high outburst mine coal roadway also comprises:
D, the roadway workface two behind the driving is helped to detect, the unfavorable place of slip casting effect is replenished boring;
The grouting and reinforcing that E, completion replenish after the boring is handled.
Said step D also comprises through replenishing boring and helps coal body to carry out gas drainage under suction and release to roadway workface two.
High efficiency tunneling gas control method for high outburst mine coal roadway also comprises:
F, clear up slip casting to replenishing boring, strengthen hole depth as the deep hole basis after, can be used as future work face coal body is carried out gas drainage under suction and release use.
The quantity of said ultralong deep hole is more than one, and more than one ultralong deep hole evenly distributes or the dispersion shape distribution along the coal road tunneling direction.
Said ultralong deep hole is tilted to down with 1 °-2 ° along the coal road tunneling direction.
It is more than one that the quantity of filling boring is helped out with money in said tunnel two.
High efficiency tunneling gas control method for high outburst mine coal roadway of the present invention through carrying out drill site in advance in the prominent mine coal roadway both sides of height, is beaten a plurality of ultralong deep holes at drill site along the coal road tunneling direction; And ultralong deep hole is carried out coal body slip casting handle, make along the driving space that forms a relative closure in the expectation digging laneway spatial dimension of coal road tunneling direction, simultaneously; Again driving face is carried out advance borehole; Carry out gas drainage under suction, release to estimating in the digging laneway spatial dimension, can greatly shorten the gas drainage under suction time, and improve the safety factor of the efficient driving of coal road; Guarantee the drivage efficiency of coal road, reduced the risk that the outstanding disaster of coal road gas takes place.Tunnel two behind driving is helped to replenish boring, is replenished the slip casting processing; And carry out pump drainage gas; Can improve the supporting intensity of helping in tunnel two on the one hand reduces roadway deformation, reduces support cost; Also can reduce by two on the other hand and help gas to give prominence to the risk of disaster, guarantee that the coal road driving is in a safe condition all the time.Said method can be realized the purpose of coal road safety, efficient driving, has solved the drawback of the inefficiency that driving brings after the first extraction.According to the ocurrence of coal seam situation, adopt different leading hole depths, change pattern, just can satisfy the use needs of mining face under mine geology complicated and changeable, compliance is strong, simple to operate.
Description of drawings
Fig. 1 is the plane structure sketch map of work plane of the present invention and drill site;
Fig. 2 is the Facad structure sketch map of work plane of the present invention and drill site;
Fig. 3 is the vertical structure sectional view of drill site of the present invention;
Fig. 4 helps the flat distribution map of hole structure for tunnel two of the present invention.
The specific embodiment
The purport of the method for the invention is to adopt grouting mode that gas is carried out earlier " block up " back " to dredge " measure, isolated relatively with realization coal road gas, assurance efficiently, coal road tunneling process apace.
High efficiency tunneling gas control method for high outburst mine coal roadway according to the invention comprises:
Step 1 is before high gas projecting mine coal road driving; Help respectively to do a drill site at coal road two; In drill site, beat a plurality of ultralong deep holes along the coal road tunneling direction, the direction of ultralong deep hole is tilted to down a little, and ultralong deep hole is dispersion shape along the coal road tunneling direction and distributes; To increase the distribution of ultralong deep hole in coal body, enlarge ultralong deep hole to greatest extent to gas in the coal body mobile influence and destruction.The length of ultralong deep hole should so just can play the effect that destroys fully to gas in the coal road greater than the expectation Excavation Length of every circulation coal road, and the concrete length of ultralong deep hole can be tunneled the needs actual set according to coal road.
After step 4 coal road driving is accomplished; Two help to carry out distributed additional boring in the tunnel; Replenish on the centre position that the boring horizontal distribution helps in tunnel two; Utilize to replenish boring and can help that gas carries out extraction and release in the coal body, further reduce the outstanding possibility that takes place of gas, improve tunnel two and help safety factor two.
According to the above-mentioned steps repeatable operation, can realize smoothly the outstanding coal road of high gas safe, efficiently tunnel purpose, not only safety, but also convenient in the tunneling process.And ultralong deep hole on the drill site and the advance borehole on the driving face also can evenly distribute along the coal road tunneling direction as required, and its hole depth can need and be decided according to different coal road layouts with concrete distribution mode; Tunnel two is helped out with money the position of filling boring and also can be selected in as required on the diverse location, and its degree of depth also can be decided according to coal road thickness, width and coal seam characteristics.
Embodiment
Like Fig. 1, Fig. 2, Fig. 3, shown in Figure 4; High efficiency tunneling gas control method for high outburst mine coal roadway specifically comprises: at first, at work plane 18 borings are set, wherein coal road work plane 1 is provided with six advance boreholes 4; In two drill sites 2 that coal road two is helped, six ultralong deep holes 3 are set respectively; Ultralong deep hole 3 is tilted to down, and angle remains between 1 ° to 2 °, and the degree of depth of ultralong deep hole 3 and advance borehole 4 is all estimated Excavation Length greater than coal road.Help slip castings in the ultralong deep hole 3 to two, the passage between shutoff work plane 1 coal seam and the extraneous coal seam simultaneously, utilizes the interior gas of the 4 pairs of coal roads of six advance boreholes that are distributed on the coal road work plane 1 to carry out extraction and pressure relief treatment.Begin after finishing dealing with coal road is efficiently tunneled, because gas relative closure and release in the coal road, so driving speed can improve greatly, simultaneously, gas drainage under suction in the coal road, release time shorten greatly.After coal road driving, two help that the middle part is every to be provided with an injected hole 5 at a distance from 5m in the tunnel, and hole depth 5m carries out slip casting to the injected hole 5 of both sides, tunnel, improves the intensity that country rock is helped in tunnel two.
According to the ocurrence of coal seam situation, can be whenever in the tunneling process in coal road tunnel two construction drill sites 2 be set at a distance from 50 meters, and drill site 2 along work plane 1 tunneling direction construction drill, carry out slip casting, thereby accomplish coal road safety, efficient tunneling process by easy stages.
Claims (6)
1. high efficiency tunneling gas control method for high outburst mine coal roadway is characterized in that, comprising:
Before A, the high gas projecting mine coal road driving, help respectively to do a drill site earlier, in drill site, beat ultralong deep hole, the tunnelling footage that the length of ultralong deep hole is estimated greater than coal road along the coal road tunneling direction at coal road two;
B, ultralong deep hole is carried out slip casting handle;
C, accomplish the processing of advance borehole on the coal road work plane, utilize advance borehole that the coal body in the coal road driving scope is carried out gas drainage under suction, release, again coal road is efficiently tunneled after reaching required standard;
D, the roadway workface two behind the driving is helped to replenish boring, and help coal body to carry out gas drainage under suction and release to roadway workface two through additional boring.
2. high efficiency tunneling gas control method for high outburst mine coal roadway according to claim 1 is characterized in that, also comprises:
E, carry out grouting and reinforcing and handle replenishing boring.
3. high efficiency tunneling gas control method for high outburst mine coal roadway according to claim 2 is characterized in that, also comprises:
F, clear up slip casting to replenishing boring, strengthen hole depth as the deep hole basis after, can be used as future work face coal body is carried out gas drainage under suction and release use.
4. according to arbitrary described high efficiency tunneling gas control method for high outburst mine coal roadway in the claim 1 to 3, it is characterized in that the quantity of said ultralong deep hole is more than one, more than one ultralong deep hole evenly distributes or the dispersion shape distribution along the coal road tunneling direction.
5. high efficiency tunneling gas control method for high outburst mine coal roadway according to claim 4 is characterized in that, said ultralong deep hole is tilted to down with 1 °-2 ° along the coal road tunneling direction.
6. according to claim 1,2 or 3 described high efficiency tunneling gas control method for high outburst mine coal roadway, it is characterized in that it is more than one that the quantity of filling boring is helped out with money in said tunnel two.
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| CN2009102599261A CN101749045B (en) | 2009-12-23 | 2009-12-23 | High-efficiency tunneling gas control method for high outburst mine coal roadway |
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| CN2009102599261A CN101749045B (en) | 2009-12-23 | 2009-12-23 | High-efficiency tunneling gas control method for high outburst mine coal roadway |
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| CN101749045B true CN101749045B (en) | 2012-02-08 |
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Families Citing this family (16)
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| CN102400698A (en) * | 2010-09-17 | 2012-04-04 | 焦作煤业集团赵固（新乡）能源有限责任公司 | Method for controlling rib spalling in double hard high-mining-height fully-mechanized mining face coal wall |
| CN102121394B (en) * | 2010-12-17 | 2013-09-18 | 神华集团有限责任公司 | Method for uncovering outburst coal seam by using pseudo lithosphere on laneway |
| CN102635391B (en) * | 2012-04-28 | 2014-02-12 | 陈凤平 | Method for preventing and controlling gas outburst |
| CN103216258B (en) * | 2012-08-22 | 2016-03-02 | 山西晋城无烟煤矿业集团有限责任公司 | Km rig concentrates strip-type to draw out methane method |
| CN103670497A (en) * | 2013-12-25 | 2014-03-26 | 大同煤矿集团有限责任公司 | Gas treatment method used when tunneled underground coal mine roadway is communicated with abandoned roadway |
| CN104832209A (en) * | 2015-04-04 | 2015-08-12 | 西安科技大学 | Roadway advanced borehole diversion drainage goaf gas technology |
| CN106321140B (en) * | 2016-08-31 | 2019-02-01 | 辽宁工程技术大学 | A kind of method for arranging of super high seam gas pre-drainage drilling |
| CN107387114A (en) * | 2017-09-05 | 2017-11-24 | 湖南科技大学 | A kind of continuous pressure relief method of coal mine roadway based on drilling by lane |
| CN110273664A (en) * | 2018-03-14 | 2019-09-24 | 柴乔森 | Gas production device contained by coal seam with circulating mash gas extraction pump |
| CN109026024B (en) * | 2018-08-30 | 2020-09-25 | 河南理工大学 | Roadway roof deformation control method under high-level stress action |
| CN109026133B (en) * | 2018-09-30 | 2020-02-18 | 四川华蓥山龙滩煤电有限责任公司 | Extraction method of pressure-relief gas in mining separation zone of super-long working face |
| CN110107343B (en) * | 2019-03-29 | 2020-10-16 | 山西能源学院 | Outburst elimination method for deep high-gas high-ground-stress multi-structure coal roadway |
| CN111119983B (en) * | 2019-12-30 | 2021-07-02 | 中铁六局集团天津铁路建设有限公司 | Gas spraying and burning treatment method in tunnel excavation process |
| CN111894601B (en) * | 2020-07-14 | 2022-07-01 | 中煤科工开采研究院有限公司 | Coal seam roadway surrounding rock structure passing geological structure and advanced modification tunneling method thereof |
| CN111894600A (en) * | 2020-07-14 | 2020-11-06 | 中煤科工开采研究院有限公司 | Three-soft coal seam roadway surrounding rock structure and tunneling method thereof |
| CN112196610B (en) * | 2020-09-23 | 2022-06-07 | 贵州大学 | Water drilling mining structure for eliminating gas outburst of inclined coal seam and mining method thereof |
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