CN104314610A - Outburst eliminating method for coal roadway stripe region - Google Patents
Outburst eliminating method for coal roadway stripe region Download PDFInfo
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- CN104314610A CN104314610A CN201410533892.1A CN201410533892A CN104314610A CN 104314610 A CN104314610 A CN 104314610A CN 201410533892 A CN201410533892 A CN 201410533892A CN 104314610 A CN104314610 A CN 104314610A
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- 239000003245 coal Substances 0.000 title claims abstract description 154
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000000605 extraction Methods 0.000 claims abstract description 62
- 238000005553 drilling Methods 0.000 claims abstract description 43
- 230000000694 effects Effects 0.000 claims abstract description 34
- 230000008030 elimination Effects 0.000 claims abstract description 18
- 238000003379 elimination reaction Methods 0.000 claims abstract description 18
- 238000010276 construction Methods 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 57
- 230000005641 tunneling Effects 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 18
- 238000005086 pumping Methods 0.000 claims description 14
- 238000007689 inspection Methods 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims description 3
- 239000011435 rock Substances 0.000 abstract description 19
- 230000035699 permeability Effects 0.000 abstract description 6
- 230000002265 prevention Effects 0.000 abstract description 3
- 238000004904 shortening Methods 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- 238000005065 mining Methods 0.000 description 11
- 239000011295 pitch Substances 0.000 description 6
- 239000011300 coal pitch Substances 0.000 description 3
- 239000004047 hole gas Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000003325 tomography Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000003667 anti-reflective effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
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- 239000007921 spray Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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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)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a outburst elimination method for a coal roadway stripe region, which is characterized in that a coal roadway to be excavated is directly positioned in a pressure relief area of a pre-excavated bottom plate rock roadway and pre-extracted with coal seam gas by adopting a cross-layer drilling hole, namely, the bottom plate rock roadway is pre-excavated along the trend under the coal seam of the coal roadway to be excavated, the pressure of the coal roadway to be excavated is relieved in the bottom plate rock roadway, and the gas pre-extraction is carried out on the upper and lower sides of the coal roadway to be excavated by adopting the cross-layer drilling hole; the method can achieve the purposes of pressure relief of the stripe coal seam of the coal roadway to be excavated, air permeability increase and gas extraction effect improvement, and has the characteristics of improving the safety and reliability of cross-layer drilling construction, reducing outburst prevention engineering, shortening construction time and improving outburst prevention effect of the stripe area of the coal roadway.
Description
Technical field
The present invention relates to a kind of method of draining coal seam gas, particularly a kind of single coal bed coal roadway stripe region outburst elimination method be applicable under different angle, buried depth, coal measure strata lithology and structural condition.
Background technology
China is main coal producer in the world, is also one of country that coal and gas prominent is the most serious in the world, and its coal production amount 95% is from pit mining, and high methane, projecting mine coal production account for more than 30%.Because China's coal-mine exploitation extends to deep with the speed of 10 ~ 40m every year, along with the increase of the pit mining degree of depth, to give prominence to and the dynamic disaster such as bump significantly increases; The outstanding mechanism of some Deep Mine under high-ground stress, high methane and hot environment is more complicated, and the outstanding and compound dynamic disaster of bump highlights, and prevents outstanding or a global problem.
High gas and outburst mine mainly adopts exploitation topping and takes out coal-bed gas in advance and carry out region protrusion-dispelling, and wherein exploitation topping carries out region protrusion-dispelling in conjunction with protected seam pressure relief gas pumping mining and is widely used, and achieves good protrusion-dispelling effect; But the region gas pre-drainage protrusion-dispelling of single severe outburst coal unprotect layer mining conditions also has many difficult problems unresolved, mainly contain that pre-draining borehole difficulty of construction is large, security reliability is poor, drilling construction does not reach designing requirement, there is stick of tool, crown drill, spray orifice and even to hole the major safety risks such as outstanding in work progress, wearing layer, to take out effect in advance undesirable; Also have some single severe outburst coal, even if take out " up to standard " or the low coal seam of gas bearing capacity in advance in gas region, mining process still spot stress leading type is given prominence to, and causes great casualties and property loss.
Coal in China industry current law requires that surface drilling or down-hole roof and floor rock gangway layer-through drilling should be taked to take out coal-bed gas in advance during the single severe outburst coal of exploitation carries out region protrusion-dispelling.At present, in view of the economy of surface drilling and extracting result all undesirable, be only limitted to indivedual superficial part mine application; The single projecting coal bed mine of domestic and international overwhelming majority's exploitation mainly adopts the intensive layer-through drilling of floor roadway grid type to take out coal roadway stripe gas in advance to carry out region protrusion-dispelling, floor roadway distance treats that pick coal road coal seam length of normal 15 ~ 25m is even farther, and with wait to dig coal road in the plane in interior mistake, overlapping or outward staggered arrangement, layer-through drilling of then constructing, sealed borehole length are not less than 3m and take out in advance.This conventional backplane rock gangway layer-through drilling region anti-burst method does not consider that the redistribution of stone drifting surrouding rock stress is on taking out coal-bed gas impact in advance, easily cause and treat that pick coal roadway stripe is in stone drifting country rock concentrated stress influence area, treat that pick coal roadway stripe gas permeability of coal seam reduces, Gas pre-drainage weak effect; On the other hand, the distribution of secondary surrouding rock stress is produced again during coal roadway tunneling, floor roadway layer-through drilling sealing of hole is easily caused to destroy gas leakage, hole pumping and mining utilization rate is low, this region protrusion-dispelling effect is undesirable, especially at the base plate layer-through drilling extraction region protrusion-dispelling weak effect of some deep minings under high-ground stress, high methane and hot environment.
Take out coal seam in advance treat pick coal roadway stripe region protrusion-dispelling effect to improve floor roadway layer-through drilling, both at home and abroad once test fracturing, high-pressure water jet reaming and Deephole pre-splitting blasting at floor roadway to strengthen and treat pick coal roadway stripe coal seam pressure relief, anti-reflection, take out region protrusion-dispelling effect in advance to improve floor roadway layer-through drilling.Should say that these measures are favourable to a certain extent, but also there is obvious limitation.To form release in coal seam as fracturing simultaneously and stress is concentrated, damage envelope and directionality uncontrollable, easily crush base plate tunnel, and its region protrusion-dispelling effect needs to be investigated, perfect; High-pressure water jet reaming, Deephole pre-splitting blasting take out effect in advance respectively by the strengthening release of increase coal hole section diameter and anti-reflection, part layer-through drilling coal hole section charge explosion release and anti-reflection raising, its operation, technique itself is more complicated, and safe and reliable sexual needs improve further.For this reason, for prior art Problems existing, need badly and propose a kind of single coal bed coal roadway stripe region outburst elimination method be applicable under different angle, buried depth, coal measure strata lithology and structural condition, make to treat that pick coal road is directly in pre-pick rock gangway distressed zone and takes out effect in advance to improve layer-through drilling region.
Summary of the invention
In view of this, one is the object of the present invention is to provide to be applicable to different angle, buried depth, single coal bed coal roadway stripe region outburst elimination method under coal measure strata lithology and structural condition, by digging floor roadway in advance, region release is carried out to Dai Jue tunnel, coal seam band, increase gas permeability of coal seam, and by the gas pumping of layer-through drilling, the coal-bed gas pressure within the scope of coal roadway tunneling band protrusion-dispelling or content are reduced to security clearance scope fast, thus by high-ground stress, the projecting coal bed driving of high methane be converted into lower earth stress and present low gas state without outburst dangerous area, realize safety of coal tunnel speedy drivage.
Coal roadway stripe region of the present invention outburst elimination method, makes to treat that pick coal road is directly in pre-pick floor roadway distressed zone and adopts layer-through drilling to take out coal-bed gas in advance;
Further, treat pick coal road coal seam immediately below across pitch dig floor roadway in advance, floor roadway treat pick coal road carry out release, and adopt layer-through drilling treat pick coal road help up and down to carry out gas pre-drainage;
Further, according to the proportional space position apart from coal seam in geology and seat earth lithology determination floor roadway, described floor roadway adopts Wide Band Oxygen Sensors strengthening release effect;
Further, described floor roadway is 8 ~ 10m apart from coal seam vertical distance;
Further, described floor roadway drill site is worn layer extraction borehole and is being treated within the scope of the pick each 15m of the upper and lower side of coal road in fan-shaped distribution, and determine to wear a layer extraction borehole hole arrangement parameters according to the effective radius of influence of extraction unloading drill site different spatial coal seam, press lane, sealing of hole immediately after drilling construction completes, above floor roadway, extraction borehole sealed borehole length is to coal seam, both sides extraction borehole sealed borehole length is not less than 5m, extraction borehole aperture negative pressure is not less than 13kpa, carries out gas pumping after sealing of hole by extraction system;
Further, described extraction system comprises the drainage tube be connected with extraction borehole and the gas collection tailrace be connected with drainage tube, and described gas collection tailrace is connected with main line by connecting to take out to manage;
Further, the described extraction borehole drilled in middle pitch of holes in fan-shaped distribution is greater than its both sides spacing of wells, and bore diameter is not less than 75mm, and in back perforate, roof 0.5m is pierced in whole hole of holing;
Further, when described floor roadway and coal road tunnel simultaneously, adopt floor roadway leading heading driving certain distance, after coal roadway tunneling, driving rear extraction borehole disconnect in time and sealing of hole so as not to affect other boring extracting result;
Further, described floor roadway leading heading driving is no less than 120 ~ 150m, to guarantee that the construction of floor roadway layer-through drilling, sealing of hole and extraction pipeline are installed, and has the enough extraction time, until reach region protrusion-dispelling effect up to standard till;
Further, region measure effect inspection is carried out to band gas pre-drainage effect up to standard before coal roadway tunneling, after regional effect inspection is without outburst hazard, can coal roadway tunneling be carried out, and adopt work plane outburst danger Forecasting Methodology to carry out the outburst danger checking of coal roadway stripe region at tunneling process.
Beneficial effect of the present invention: coal roadway stripe region of the present invention outburst elimination method, make to treat that pick coal road is directly in pre-pick rock gangway distressed zone and takes out effect in advance to improve layer-through drilling region, by digging floor roadway in advance, region release is carried out to Dai Jue tunnel, coal seam band, increase gas permeability of coal seam, and by the gas pumping of layer-through drilling, the coal-bed gas pressure within the scope of coal roadway tunneling band protrusion-dispelling or content are reduced to security clearance scope fast, thus by high-ground stress, the projecting coal bed driving of high methane be converted into lower earth stress and present low gas state without outburst dangerous area, realize safety of coal tunnel speedy drivage, this region anti-burst method and former mine conventional backplane rock gangway are arranged in be waited to dig 15 ~ 20m below coal road, interior mistake or outer wrong length of normal 15 ~ 20m, the conventional method of layer-through drilling coal pitch of holes 4m extraction is compared, decrease layer-through drilling engineering quantity, shorten the engineering time, save a large amount of costs, significantly improve region protrusion-dispelling effect, achieve considerable safety technical economic benefit.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is that solid of the present invention arranges schematic diagram;
Fig. 2 is along coal seam dip section figure;
Fig. 3 is along bearing sectional drawing.
Detailed description of the invention
Fig. 1 is that solid of the present invention arranges schematic diagram; Fig. 2 is along coal seam dip section figure; Fig. 3 is along bearing sectional drawing, as shown in the figure, 1-coal seam, 2-drainage tube, 3-waits to dig coal road, 4-gas collection tailrace, 5-even takes out pipe, and 6-digs base plate release rock gangway in advance, 7-main line, the spacing of R-extraction drill site, L-floor roadway leading heading driving distance, apart from the vertical distance in coal seam on H-floor roadway.
The coal roadway stripe region outburst elimination method of the present embodiment, makes to treat that pick coal road 3 is directly in pre-pick floor roadway 6 distressed zone and adopts layer-through drilling to take out coal-bed gas in advance.
The present embodiment, immediately below treating pick coal road coal seam 3, across pitch digs floor roadway 6 in advance, treats pick coal road 3 carry out release at pre-pick floor roadway 6, and adopts layer-through drilling to treat pick coal road about 3 side to carry out gas pre-drainage; Make to treat that pick coal road 3 is directly in pre-pick rock gangway and unloads 6 nips and take out effect in advance to improve layer-through drilling region, treat that pick tunnel band carries out region release, increases coal seam 1 gas permeability by digging floor roadway 6 pairs of coal seams 1 in advance, and by the gas pumping of layer-through drilling, the coal-bed gas pressure within the scope of coal roadway tunneling band protrusion-dispelling or content are reduced to security clearance scope fast, thus high-ground stress, the projecting coal bed driving of high methane are converted into lower earth stress and present low gas state without outburst dangerous area, realize safety of coal tunnel speedy drivage.
In the present embodiment, according to the proportional space position apart from coal seam 1 in geology and seat earth lithology determination floor roadway 6, described floor roadway 6 adopts Wide Band Oxygen Sensors to strengthen release effect; Floor roadway pick 6 enters in process to strengthen geology detecting and ventilation, and takes corresponding measure to prevent methane accumulation, take off tomography or coal seam 1 by mistake and cause outstanding.
In the present embodiment, described floor roadway 6 is 8 ~ 10m apart from coal seam 1 vertical distance; Get the small value when lithology hardness is comparatively large and integrality is better, otherwise take large values, can suitably strengthen during lithology dead-soft, gas administration must be strengthened in floor roadway 6 tunneling process, prevent gas exceeding limit or gather, and take the means of drilling to carry out " first visits dig afterwards, spy limit, limit pick " measure, the promptly and accurately position of grasp rock heading face and adjacent coal seam and structure, prevents from taking off tomography or coal seam 1 and initiation is given prominence to by mistake.
In the present embodiment, described floor roadway 6 drill site is worn layer extraction borehole and is being treated within the scope of the pick each 15m of the upper and lower side of coal road 3 in fan-shaped distribution, and determine to wear a layer extraction borehole hole arrangement parameters according to the effective radius of influence of extraction in release floor roadway 6 drill site different spatial coal seam 1, sealing of hole immediately after drilling construction completes, above floor roadway 6, extraction borehole sealed borehole length is to coal seam 1, both sides extraction borehole sealed borehole length is not less than 5m, extraction borehole aperture negative pressure is not less than 13kpa, carries out gas pumping after sealing of hole by extraction system.The crossing-hole gas extraction of floor roadway 6 is generally no less than 3 months; Floor roadway 6 pressure relief gas pumping mining engineering comprises driving floor roadway 6, construction layer-through drilling, sealing of hole and installation main line 7.
In the present embodiment, described extraction system comprises the drainage tube 2 be connected with extraction borehole and the gas collection tailrace 4 be connected with drainage tube 2, and described gas collection tailrace 4 is connected with main line 7 by even taking out pipe 5.
In the present embodiment, the described extraction borehole drilled in middle pitch of holes in fan-shaped distribution is greater than its both sides spacing of wells, and (spacing of wells can reduce along fan-shaped middle part gradually to both sides, as long as or it is less than middle part spacing to meet the both sides spacing of wells), bore diameter is not less than 75mm, in back perforate, coal seam 1 top board 0.5m is pierced in whole hole of holing.
In the present embodiment, when described floor roadway 6 and coal road tunnel simultaneously, adopt floor roadway 6 leading heading driving certain distance, after coal roadway tunneling, the extraction borehole at driving rear disconnect in time and sealing of hole in order to avoid affect the extracting result of other boring.
In the present embodiment, described floor roadway 6 leading heading driving is no less than 120 ~ 150m, to guarantee that the construction of floor roadway 6 layer-through drilling, sealing of hole and main line 7 are installed, and has the enough extraction time, until reach region protrusion-dispelling effect up to standard till;
In the present embodiment, region measure effect inspection is carried out to band gas pre-drainage effect up to standard before coal roadway tunneling, after regional effect inspection is without outburst hazard, can coal roadway tunneling be carried out, and adopt work plane outburst danger Forecasting Methodology to carry out the outburst danger checking of coal roadway stripe region at tunneling process; Otherwise, must local prevent outburst measure be taked until just can excavation operation be carried out through the inspection of work plane measure effect without after outburst danger.For ensureing the reasonable and efficient of the method, composing deformation-failure character choose reasonable floor roadway 6 position of depositing situation, floor roadway 6 according to coal seam 1, and rationally determining hole pumping and mining parameter, extraction time, guaranteeing extracting result.
Embodiment one
Floor roadway 6 is positioned at inclined seam and treats immediately below pick coal road 3, upper apart from coal seam 8m; In floor roadway tunneling process, when running into tomography, take necessary protrusion-dispelling technical measures, suitably strengthen the distance apart from coal seam 1 on floor roadway 6, to ensure to tunnel safety; Floor roadway 6 tunnels at least leading heading 135m, guarantees there is the enough extraction time; The crossing-hole gas extraction of floor roadway 6 is generally no less than 3 months; Floor roadway 6 pressure relief gas pumping mining engineering comprises driving floor roadway 6, construction layer-through drilling, sealing of hole and installation main line, and this installing engineering is prior art, repeats no more herein; Boring is in fan-shaped layout in tunnel, and drilled in middle pitch of holes is large, and the both sides spacing of wells is little; Bore diameter 80mm, in back perforate, roof 0.5m is pierced in whole hole of holing, above floor roadway, extraction borehole sealed borehole length is to coal seam, both sides extraction borehole sealed borehole length 5m, extraction borehole aperture negative pressure 13kpa, carries out gas pumping by extraction system after sealing of hole; Base plate release rock gangway gas pumping, after inspecting burst-preventing effect of areas is up to standard, can carry out coal roadway tunneling operation, and carries out region protrusion-dispelling compliance test result at tunneling process.When checking work plane is without outburst hazard, coal roadway tunneling can be carried out taking safety prevention measure; Otherwise, must local prevent outburst measure be taked until just can excavation operation be carried out through the inspection of work plane measure effect without after outburst danger.
Embodiment two
Adopting floor roadway 6 to be positioned at inclined seam treats immediately below pick coal road 3, upper apart from coal seam 10m; Floor roadway 6 tunnels at least leading heading 150m, guarantees there is the enough extraction time; The crossing-hole gas extraction of floor roadway 6 is 3.5 months; Boring is in fan-shaped layout in tunnel, and drilled in middle pitch of holes is large, and the both sides spacing of wells is little; Bore diameter 90mm, in back perforate, roof 0.5m is pierced in whole hole of holing, above floor roadway, extraction borehole sealed borehole length is to coal seam, both sides extraction borehole sealed borehole length 6m, extraction borehole aperture negative pressure 15kpa, carries out gas pumping by extraction system after sealing of hole.
Embodiment three
A kind of coal roadway stripe region of the present invention anti-burst method in Fengcheng still one, build the Deep Mine exploitation single serious outstanding Medium Thickness And Medium Slope Angle coal seam driving proof prominences such as new, Ping Hu and the Qujiang River and achieve successful practice, this mining area exploitation tilts single serious outstanding B
4coal seam, adopts dark 600 ~ 1100m, seam inclination 10 ~ 14 °, thickness 2.2 ~ 3.5m, seam hardness coefficient f=0.3 ~ 0.8, gas pressure 3.0 ~ 9.2MPa, gas bearing capacity 13.5 ~ 25.3m
3/ t.Base plate lithology is packsand or medium sandstone, and rock gangway design section is 7.84 ~ 12.6m
2, and wait to dig coal road arranged superposed, apex distance coal seam, lane length of normal 8 ~ 10m.Through experiment investigation, during driving rock gangway, gas pressure relief wind comes 14.4 ~ 196.6m
3/ min; Floor roadway country rock has subregion fracture phenomena, treats that pick coal roadway stripe Permeability Coefficent in Coal Seam increases by more than 10 times, and floor roadway release, antireflective effect are obvious.Floor roadway layer-through drilling coal pitch of holes 4 ~ 6m, after extraction in 3 months, adopt gas remainder quantity between the Direct Determination extraction borehole of down-hole, gas bearing capacity is all less than 8m
3/ t; And when coal roadway tunneling process adopts drilling cuttings method sensitive indicator region protrusion-dispelling compliance test result, coal powder quantity of bore S and Desorption Index for Drill Cuttings K1 is without the phenomenon that exceeds standard.This region anti-burst method and former mine conventional backplane rock gangway are arranged in waits to dig 15 ~ 20m below coal road, interior mistake or outer wrong length of normal 15 ~ 20m, the conventional method of layer-through drilling coal pitch of holes 4m extraction is compared, decrease layer-through drilling engineering quantity, shorten the engineering time, save a large amount of costs, significantly improve region protrusion-dispelling effect, achieve considerable safety technical economic benefit.
In above-described embodiment, layout and installation, extraction and the inspection etc. of the driving of coal road and floor roadway, layer-through drilling, sealing of hole, extraction system are prior art, repeat no longer one by one herein.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (10)
1. a coal roadway stripe region outburst elimination method, is characterized in that: make to treat that pick coal road is directly in pre-pick floor roadway distressed zone and adopts layer-through drilling to take out coal-bed gas in advance.
2. coal roadway stripe region according to claim 1 outburst elimination method, it is characterized in that: immediately below treating pick coal road coal seam, across pitch digs floor roadway in advance, floor roadway treat pick coal road carry out release, and adopt layer-through drilling treat pick coal road help up and down to carry out gas pre-drainage.
3. coal roadway stripe region according to claim 2 outburst elimination method, is characterized in that: according to the proportional space position apart from coal seam in geology and seat earth lithology determination floor roadway, and described floor roadway adopts Wide Band Oxygen Sensors strengthening release effect.
4. coal roadway stripe region according to claim 3 outburst elimination method, is characterized in that: described floor roadway is 8 ~ 10m apart from coal seam vertical distance.
5. coal roadway stripe region according to claim 2 outburst elimination method, it is characterized in that: described floor roadway drill site is worn layer extraction borehole and treated on pick coal road, in fan-shaped distribution within the scope of the lower each 15m of side, and determine to wear a layer extraction borehole hole arrangement parameters according to the effective radius of influence of extraction unloading drill site different spatial coal seam, press lane, sealing of hole immediately after drilling construction completes, above floor roadway, extraction borehole sealed borehole length is to coal seam, both sides extraction borehole sealed borehole length is not less than 5m, extraction borehole aperture negative pressure is not less than 13kpa, gas pumping is carried out by extraction system after sealing of hole.
6. coal roadway stripe region according to claim 5 outburst elimination method, is characterized in that: described extraction system comprises the drainage tube be connected with extraction borehole and the gas collection tailrace be connected with drainage tube, and described gas collection tailrace is connected with main line by connecting to take out to manage.
7. coal roadway stripe region according to claim 5 outburst elimination method, it is characterized in that: the described extraction borehole drilled in middle pitch of holes in fan-shaped distribution is greater than its both sides spacing of wells, bore diameter is not less than 75mm, and in back perforate, roof 0.5m is pierced in whole hole of holing.
8. coal roadway stripe region according to claim 2 outburst elimination method, it is characterized in that: when described floor roadway and coal road tunnel simultaneously, adopt floor roadway leading heading driving certain distance, after coal roadway tunneling, driving rear extraction borehole disconnect in time and sealing of hole so as not to affect other boring extracting result.
9. coal roadway stripe region according to claim 8 outburst elimination method, it is characterized in that: described floor roadway leading heading driving is no less than 120 ~ 150m, to guarantee that the construction of floor roadway layer-through drilling, sealing of hole and extraction pipeline are installed, and have the enough extraction time, until reach region protrusion-dispelling effect up to standard till.
10. coal roadway stripe region according to claim 2 outburst elimination method, it is characterized in that: region measure effect inspection is carried out to band gas pre-drainage effect up to standard before coal roadway tunneling, after regional effect inspection is without outburst hazard, can coal roadway tunneling be carried out, and adopt work plane outburst danger Forecasting Methodology to carry out the outburst danger checking of coal roadway stripe region at tunneling process.
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| CN201410533892.1A CN104314610A (en) | 2014-10-11 | 2014-10-11 | Outburst eliminating method for coal roadway stripe region |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104790949B (en) * | 2015-03-11 | 2016-08-17 | 中国矿业大学(北京) | Huge thick tight roof high methane high seam Roof Control and method and the drilling machine improving gas drainage under suction efficiency |
| CN105909254A (en) * | 2016-04-29 | 2016-08-31 | 中煤科工集团西安研究院有限公司 | Outburst coal seam floor pitch-up through-bed directional hole leading area shield coal roadway driving method |
| CN106014474A (en) * | 2016-05-17 | 2016-10-12 | 陕西正通煤业有限责任公司 | Three-hole combined construction method meeting requirements of downhole pressure releasing, water draining and prospecting and gas drainage |
| CN107100666A (en) * | 2017-06-15 | 2017-08-29 | 安徽理工大学 | Quick-fried crowded extinction and dust-removing method under a kind of Coal Seam Prone To Outburst coal roadway tunneling |
| CN107905832A (en) * | 2017-11-06 | 2018-04-13 | 北京九尊能源技术股份有限公司 | The outburst elimination method of pump drainage is combined on a kind of nitrogen pressure break and ground with underground |
| CN108590653A (en) * | 2018-03-02 | 2018-09-28 | 煤炭科学技术研究院有限公司 | Coal and gas prominent release energy dissipating cooperates with preventing control method with media property transformation |
| CN109236353A (en) * | 2018-09-21 | 2019-01-18 | 中铁十六局集团有限公司 | A kind of exposed coal protrusion-dispelling construction method in high methane Tunnel Passing coal seam |
| CN109519210A (en) * | 2018-11-13 | 2019-03-26 | 中国矿业大学 | A kind of single coal bed working face belly band detection and fixed point outburst elimination method |
| CN110685744A (en) * | 2019-11-18 | 2020-01-14 | 内蒙古上海庙矿业有限责任公司 | Arrangement mode of water detection and drainage hole series |
| CN112196610A (en) * | 2020-09-23 | 2021-01-08 | 贵州大学 | Water drilling mining structure for eliminating gas outburst of inclined coal seam and mining method thereof |
| CN112412527A (en) * | 2020-11-20 | 2021-02-26 | 贵州盘江精煤股份有限公司 | Centralized gas treatment method for coal groups in close-distance coal seam group |
| CN112664259A (en) * | 2020-12-23 | 2021-04-16 | 中国矿业大学 | Trinity comprehensive outburst prevention method for high outburst coal seam |
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| CN114183139A (en) * | 2021-11-02 | 2022-03-15 | 中煤科工开采研究院有限公司 | Method and device for controlling mining influence on working face |
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