CN104405404B - A kind of gas in mine stay roadway method - Google Patents
A kind of gas in mine stay roadway method Download PDFInfo
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- CN104405404B CN104405404B CN201410640153.2A CN201410640153A CN104405404B CN 104405404 B CN104405404 B CN 104405404B CN 201410640153 A CN201410640153 A CN 201410640153A CN 104405404 B CN104405404 B CN 104405404B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000000605 extraction Methods 0.000 claims abstract description 16
- 239000004567 concrete Substances 0.000 claims description 43
- 239000003351 stiffener Substances 0.000 claims description 32
- 235000015041 whisky Nutrition 0.000 claims description 24
- 239000003245 coal Substances 0.000 claims description 17
- 238000009423 ventilation Methods 0.000 claims description 12
- 241000209094 Oryza Species 0.000 claims description 9
- 235000007164 Oryza sativa Nutrition 0.000 claims description 9
- 239000011449 brick Substances 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 9
- 235000009566 rice Nutrition 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000003032 molecular docking Methods 0.000 claims description 4
- 230000005641 tunneling Effects 0.000 claims description 4
- 239000011083 cement mortar Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000011505 plaster Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000002436 steel type Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 9
- 230000011218 segmentation Effects 0.000 abstract description 3
- 230000007812 deficiency Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000011440 grout Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
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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)
- Environmental & Geological Engineering (AREA)
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- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
For the deficiency of existing gassy mine roadway workface driving method, the present invention provides a kind of speed of application fast, and difficulty of construction is little, and labour intensity is low, a kind of gas in mine stay roadway method that gassy mine return air requires that what construction effect was good meet. The ultimate principle of the method is as follows: in tunnelling process, divider wall is built in segmentation simultaneously, and stay between every section of divider wall and establish the contact mouth that ventilates, tunnel is divided into new return air lane and new gas tail road two portions by divider wall and the contact mouth that ventilates, in working face extraction process, new return air lane and new gas tail road play the effect of common return air lane and common gas tail road in prior art respectively. After this working face extraction terminates, being undertaken new gas tail road width expanding and brush and carry out supporting, increase its width, this new gas lane can use as the transportation roadway in subsequent work face again.
Description
Technical field
The invention belongs to tunnelling field, specifically a kind of gas in mine stay roadway method.
Background technology
In the recovery process of coal resources, gas is the chief threat that mine faces, especially in gassy mine, even if after increasing ventilation and reaching the maximum wind speed upper limit, the gas concentration in tailentry road still exceeds standard undesirable. In the case, arrange an increase special tunnel of gas return air and gas tail road by changing roadway workface, and then change ventilation form, make return air lane gas concentration be reduced to allowed band, be comparatively general way. Conventional gas tail road arrangement form has: at tailentry away from this working face side, stay the coal column of one fixed width, then tunnels separately a gas tail road for return air; In the top board of working face, tunnel a high-order gas tail road and it is used for return air; A gas tail road etc. being connected with return air lane, adjacent exploiting field is tunneled in tailentry side. Although the arrangement form of gas tail road is had nothing in common with each other, but there is following total shortcoming:
1 in order to the stability of gas tail road, it is necessary to reserved coal pillar between return air lane and gas tail road, coal pillar width several meters at least, tens meters at most, coal resources shared by coal column, until mine abandonment all cannot be exploited, will forever be stayed underground, caused the waste of coal resources;
2 when working face prepares, it is necessary to carries out separately the tunneling construction of gas tail road, increases tunnelling workload, extend working face setup time, adding cost of labor, support cost, and cause face take-over nervous, time and Financial cost all greatly increase;
3 gas tail roads are generally only the service of this working face, and after this working face mining terminates, gas tail road is scrapped thereupon, cannot reuse. Also having the technical scheme utilized by gas tail road in prior art, but the gas tail road remained often produces very big distortion, maintenance cost is very high.
Summary of the invention
For the deficiency of existing gassy mine roadway workface driving method, the present invention provides a kind of speed of application fast, and difficulty of construction is little, and labour intensity is low, a kind of gas in mine stay roadway method that gassy mine return air requires that what construction effect was good meet.The ultimate principle of the method is as follows: in tunnelling process, divider wall is built in segmentation simultaneously, and stay between every section of divider wall and establish the contact mouth that ventilates, tunnel is divided into new return air lane and new gas tail road two portions by divider wall and the contact mouth that ventilates, in working face extraction process, new return air lane and new gas tail road play the effect of common return air lane and common gas tail road in prior art respectively. After this working face extraction terminates, being undertaken new gas tail road width expanding and brush and carry out supporting, increase its width, this new gas lane can use as the transportation roadway in subsequent work face again. Concrete steps are as follows:
The first step, new return air lane and new gas tail road share large section tunnel advance, and large section roadway width is new return air span length, new gas tail road width and divider wall width sum, carries out roof timbering in time, ensure safety in tunneling process.
2nd step, builds multistage divider wall in the middle of large section roadway, and stays between every section of divider wall and establish the contact mouth that ventilates, build partition wall construction complete after shutoff ventilate contact mouth, the length of every section of divider wall is 6-8 rice, and thickness is 0.8-1.2 rice, and the width of each contact mouth that ventilates is 1-1.5 rice.
3rd step, working face extraction, in working face extraction process, along with working face constantly back advances, the ventilation contact mouth being positioned at working face rear and worked-out section is opened successively, make the air carrying a large amount of gas behind worked-out section get in touch with mouth by ventilating and enter into new gas tail road, then drained by new gas lane.
4th step, shutoff is ventilated and is got in touch with mouth again, after the complete back production of working face terminates, cleaning is positioned at ventilate contact mouth and neighbouring broken spoil thereof, adopt the mode of brick and masonry of cement mortar that ventilations is got in touch with the permanent shutoff of mouth, and in the surperficial joint filling of the brick wall built by laying bricks or stones, plaster, to prevent air seepage.
5th step, new gas tail road expands brush, after this working face extraction terminates, need to be undertaken expanding brush by Mei Ti lane, side, the close subsequent work face side of new gas tail road, expand the new gas tail road width after brush and should meet the transportation roadway service requirements of subsequent work face, while carrying out expanding refreshing gas tail road, the new top board expanding brush element tunnel is carried out timely supporting.
New gas tail road after expanding brush can use as the transportation roadway in subsequent work face, and new gas tail road and the new ventilation lane in subsequent work face all repeat by above-mentioned steps, can complete the exploitation of subsequent work face.
As improvement, 2nd step of above-mentioned steps is specific as follows: 1) determine position, every section of divider wall corner, in each position, angle, a whisky jack is set, and in whisky jack, place pipe connecting, support bar is connected in pipe connecting docking groove, according to head-room, it is determined that the quantity of pipe connecting and support bar, top pipe connecting top is less than whisky jack stroke far from top, tunnel distance; Placing supporting plate in the surface of the contact mouth that ventilates, pallet length is greater than the contact mouth width that ventilates, and supporting plate width is greater than divider wall thickness, and operation whisky jack, makes whisky jack jacking, and supporting plate is held out against on the top board of tunnel by topmost pipe connecting. By pillar stiffener supporting plate held out against and can produce following useful effect on the top board of tunnel: tunnel top board can be played a supporting role by supporting plate, prevents from roof fall phenomenon within the scope of this;By supporting plate, the pressure of pillar stiffener is passed to top board, expand the contact area of pillar stiffener and top board, it is possible to increase the anchorage force of pillar stiffener, it is possible to be firmly fixed between tunnel top board and roadway floor by pillar stiffener.2) fixed die plate long limit hypomere, under the long limit of template, segment length is along the distance between tunnel length direction two pillar stiffener outer rims, it it is highly the 1/2 of head-room, hole opposite position boring is run through at template long limit hypomere and pipe connecting, run through hole with holding bolt through boring and pipe connecting, long for template limit hypomere is fixed on the support columns. 3) fixed die plate short limit hypomere, under the short limit of template, segment length is greater than along span length direction two pillar stiffener outer rim distance, it it is highly the 1/2 of head-room, hole at template short limit hypomere and pipe connecting inner thread mouth correspondence position, through boring, short for template limit hypomere is fixed on the support columns with holding bolt. 4) fixed L shape only pulpboard, after template long limit hypomere, template short limit hypomere have been fixed, personnel enter the internal space that template is formed, cleaning template lower rim and template are contacted rubble, the broken coal of position with roadway floor, then L-shaped is stopped pulpboard lean on respectively inside template long limit hypomere and template short limit hypomere with roadway floor intersection. L-shaped stops pulpboard can increase the stopping property between template bottom side and roadway floor, is possible to prevent concrete grout and overflows from this after concrete placement. after above-mentioned steps completes, template needed for divider wall lower part has been built. 5) build bottom concrete, concrete height is watered to mounting template top along the height of flush. 6) section on the long limit of fixed die plate, on the long limit of template, segment length is along the distance between tunnel length direction two pillar stiffener outer rims, it it is highly the 1/2 of head-room, on the long limit of template, section and pipe connecting run through hole opposite position boring, hole is run through through boring and pipe connecting with holding bolt, section on long for template limit is fixed on support bar, on the long limit of template, lower part of section is also provided with circular grouting hole, can concrete be injected in template by this grouting hole, on the long limit of template, the top of section is also provided with semicircle extravasating hole, when extravasating hole has concrete excessive, pattern of descriptive parts inner concrete is full of, casting concrete can be stopped. 7) section on the short limit of fixed die plate, on the short limit of template, segment length is greater than along span length direction two pillar stiffener outer rim distance, it it is highly the 1/2 of head-room, on the short limit of template, section and the boring of pipe connecting inner thread mouth correspondence position, fix section on short for template limit on the support columns through boring with holding bolt. 8) building top concrete, by section grouting hole on the long limit of template toward casting concrete in template, when on the long limit of template, section extravasating hole has concrete to overflow, pattern of descriptive parts inner concrete is full of, and stops casting concrete. 9) concrete pouring, adopts natural law curing concrete. 10) form removal, first section and template short limit hypomere on the short limit of form removal, then section and template long limit hypomere on the long limit of form removal, then operate whisky jack, whisky jack fallen after rise, removes support bar and pipe connecting successively. 11) shutoff is ventilated and is got in touch with mouth, with steel plate, ventilation is got in touch with mouth shutoff.
As improvement, described in the 2nd step, the hoisting capacity of whisky jack is more than 300t, and stroke is more than 200mm, and piston diameter is 150mm ~ 200mm.
As improvement, on the long limit of template described in the 2nd step, on section, template long limit hypomere, the short limit of template, section, template short limit hypomere material are steel plate, and steel plate Steel Type is more than Q235, thick more than the 15mm of plate.
As improvement, in the 5th step, new gas tail road if the strength of roof in former new gas lane (namely not expanding brush element) is inadequate, also should carry out two strengthening supporting after expanding brush and new expansion brush element top board being carried out supporting.
The invention has the beneficial effects as follows:
1, new gas tail road is without the need to reserved coal pillar separately again, also establish protection pillar without the need to staying, it is achieved without coal pillar mining between operated adjacent face, it is to increase the recovery ratio of coal resources;
2, large section roadway is once tunneled, it is achieved that the new return air lane of this working face, new gas tail road and the transportation roadway once shaped of subsequent work face, decrease workload and the working face setup time of tunnelling, great saving time and Financial cost;
3, taking concrete casting building body isolation tunnel, isolation effect is good, body of wall ultimate compression strength height, good seal performance, and support effect is good, is conducive to the maintenance in tunnel, reduces the maintenance load in tunnel;
4, stayed and established gas tail road, can effectively the gas that upper corner, worked-out section are gathered be extracted out, reduce working face and goaf gas concentration, meet gassy mine requirement.
Accompanying drawing explanation
Fig. 1 is prior art tunnel floor map
Fig. 2 is working face extraction schematic diagram
Fig. 3 is divider wall diagrammatic cross-section
Fig. 4 is pillar stiffener schematic diagram
Fig. 5 is pipe connecting vertical view
Fig. 6 is the D-D sectional view of Fig. 6
Fig. 7 is the E-E sectional view of Fig. 6
Fig. 8 is partition wall construction orthographic plan
Fig. 9 is the A-A sectional view of Fig. 9
Figure 10 is the B-B sectional view of Fig. 9
Figure 11 is that multistage divider wall is constructed schematic diagram continuously
Figure 12 is L-shaped only pulpboard schematic diagram
In figure, 0-0 coal column, 0-1 gas tail road, 0-2 return air lane, 1 ventilates gets in touch with mouth; 1-1 ventilates and gets in touch with mouth baffle plate, 2 new gas tail roads; 3 divider walls; 4 working face coal bodies; 5 new return air lanes; 6 boring heads; 7 subsequent work face coal bodies; 8 working faces; 9 worked-out sections, 8-1 transportation roadway, 9-1 country rock, 10 expansion brush coal bodies; 11 pillar stiffeners; 11-1 support bar; 11-2 pipe connecting; 11-2-1 pipe connecting docking groove; 11-2-2 pipe connecting inner thread mouth; 11-2-3 pipe connecting runs through hole, section on the 12 long limits of template; 12-1 template long limit hypomere; Section on the short limit of 12-2 template; 12-3 template short limit hypomere, 12-4 grouting hole; 12-5 extravasating hole; 13 supporting plates, 14 whisky jack; 15L type is pulpboard only; 16 holding bolts.
Embodiment
With reference to the accompanying drawings, the present invention provides a kind of speed of application fast, and difficulty of construction is little, and labour intensity is low, a kind of gas in mine stay roadway method that gassy mine return air requires that what construction effect was good meet. The ultimate principle of the method is as follows: in tunnelling process, divider wall 3 is built in segmentation simultaneously, and stay between every section of divider wall 3 and establish the contact mouth 1 that ventilates, tunnel is divided into new return air lane 5 and new gas tail road 2 two portions by divider wall 3 and the contact mouth 1 that ventilates, in working face extraction process, new return air lane 5 and new gas tail road 2 play the effect of common return air lane 0-2 and common gas tail road 0-1 in prior art respectively. After this working face extraction terminates, being undertaken new gas tail road 2 width expanding and brush and carry out supporting, increase its width, this new gas tail road 2 can use as the transportation roadway 8-1 in subsequent work face again. Concrete steps are as follows:
The first step, new return air lane 5 shares large section tunnel advance with new gas tail road 2, and large section roadway width is new return air lane 5 width, new gas tail road 2 width and divider wall 3 width sum, carries out roof timbering in time, ensure safety in tunneling process.
2nd step, multistage divider wall 3 is built in the middle of large section roadway, and stay between every section of divider wall 3 and establish the contact mouth 1 that ventilates, build divider wall 3 constructed rear shutoff ventilate contact mouth 1, the length of every section of divider wall 3 is 6-8 rice, thickness is 0.8-1.2 rice, and the width of each contact mouth 1 that ventilates is 1-1.5 rice.Concrete steps are as follows: 1) determine every section of divider wall 3 four jiaos of positions, in each position, angle, a whisky jack 14 is set, and in whisky jack 14, place pipe connecting 11-2, support bar 11-1 is connected in pipe connecting 11-2 docking groove, according to head-room, determining pipe connecting 11-2 and the quantity of support bar 11-1, top pipe connecting 11-2 top is less than whisky jack 14 stroke far from top, tunnel distance, supporting plate 13 is placed in the surface of the contact mouth 1 that ventilates, supporting plate 13 length is greater than contact mouth 1 width that ventilates, and supporting plate 13 width is greater than divider wall 3 thickness, operation whisky jack 14, making whisky jack 14 jacking, supporting plate 13 is held out against on the top board of tunnel by topmost pipe connecting 11-2. by pillar stiffener supporting plate held out against and can produce following useful effect on the top board of tunnel: tunnel top board can be played a supporting role by supporting plate 13, prevents from roof fall phenomenon within the scope of this, by supporting plate 13, the pressure of pillar stiffener 11 is passed to top board, expand the contact area of pillar stiffener 11 and top board, it is possible to increase the anchorage force of pillar stiffener 11, it is possible to be firmly fixed on by pillar stiffener 11 between tunnel top board and roadway floor. 2) the long limit hypomere 12-1 of fixed die plate, template long limit hypomere 12-1 length is along the distance between tunnel length direction two pillar stiffener 11 outer rims, it it is highly the 1/2 of head-room, hole 11-2-3 opposite position boring is run through at the long limit hypomere 12-1 of template and pipe connecting, run through hole 11-2-3 with holding bolt 16 through boring and pipe connecting, long for template limit hypomere 12-1 is fixed on pillar stiffener 11. 3) the short limit hypomere 12-3 of fixed die plate, template short limit hypomere 12-3 length is greater than along span length direction two pillar stiffener 11 outer rim distance, it it is highly the 1/2 of head-room, hole at the short limit hypomere 12-3 of template and pipe connecting inner thread mouth 11-2-2 correspondence position, through boring, short for template limit hypomere is fixed on pillar stiffener 11 with holding bolt 16. 4) fixed L shape only pulpboard 15, after the short limit hypomere 12-3 of template long limit hypomere 12-1, template has fixed, personnel enter the internal space that template is formed, cleaning template lower rim and template are contacted rubble, the broken coal of position with roadway floor, then L-shaped is stopped pulpboard lean on respectively inside the short limit hypomere 12-3 of template long limit hypomere 12-1 and template with roadway floor intersection. L-shaped stops pulpboard 15 can increase the stopping property between template bottom side and roadway floor, is possible to prevent concrete grout and overflows from this after concrete placement. after above-mentioned steps completes, template needed for divider wall 3 lower part has been built. 5) build bottom concrete, concrete height is watered to mounting template top along the height of flush. 6) section 12 on the long limit of fixed die plate, on the long limit of template, section 12 length is along the distance between tunnel length direction two pillar stiffener 11 outer rims, it it is highly the 1/2 of head-room, on the long limit of template, section 12 and pipe connecting run through hole 11-2-3 opposite position boring, hole is run through through boring and pipe connecting with holding bolt 16, section 12 on long for template limit is fixed on pillar stiffener 11, on the long limit of template, lower part of section 12 is also provided with circular grouting hole 12-4, can concrete be injected in template by this grouting hole, on the long limit of template, the top of section is also provided with semicircle extravasating hole 12-5, when extravasating hole 12-5 has concrete excessive, pattern of descriptive parts inner concrete is full of, casting concrete can be stopped. 7) section 12-2 on the short limit of fixed die plate, on the short limit of template, section 12-2 length is greater than along span length direction two pillar stiffener outer rim distance, it it is highly the 1/2 of head-room, on the short limit of template, section and the boring of pipe connecting inner thread mouth correspondence position, be fixed on section on short for template limit on pillar stiffener 11 through boring with holding bolt.8) building top concrete, by section grouting hole 12-4 on the long limit of template toward casting concrete in template, when on the long limit of template, section extravasating hole 12-5 has concrete to overflow, pattern of descriptive parts inner concrete is full of, and stops casting concrete. 9) concrete pouring, adopts natural law curing concrete. 10) form removal, first section 12-2 and the short limit hypomere 12-3 of template on the short limit of form removal, then section 12 and the long limit hypomere 12-1 of template on the long limit of form removal, then operate whisky jack 14, whisky jack 14 is fallen after rise, removes support bar 11-1 and pipe connecting 11-2 successively. 11) shutoff is ventilated and is got in touch with mouth 1, with steel plate, ventilation is got in touch with mouth 1 shutoff.
3rd step, working face extraction, in working face extraction process, along with working face constantly back advances, the ventilation contact mouth 1 being positioned at working face rear and worked-out section is opened successively, make the air carrying a large amount of gas behind worked-out section get in touch with mouth 1 by ventilating and enter into new gas tail road 2, then drained by new gas tail 2 lane.
4th step, shutoff is ventilated and is got in touch with mouth 1 again, after the complete back production of working face terminates, cleaning is positioned at ventilate contact mouth 1 and neighbouring broken spoil thereof, adopt the mode of brick and masonry of cement mortar that ventilations is got in touch with the permanent shutoff of mouth 1, and in the surperficial joint filling of the brick wall built by laying bricks or stones, plaster, to prevent air seepage.
5th step, new gas tail road expands brush, after this working face extraction terminates, need to be undertaken expanding brush by Mei Ti lane, side, the close subsequent work face side of new gas tail road 2, expand new gas tail road 2 width after brush and should meet the transportation roadway 8-1 service requirements of subsequent work face, while carrying out expanding refreshing gas tail road, the new top board expanding brush element tunnel is carried out timely supporting.
New gas tail road 2 after expanding brush can use as the transportation roadway 8-1 in subsequent work face, and new gas tail road 2 and the new return air lane 5 in subsequent work face all repeat by above-mentioned steps, can complete the exploitation of subsequent work face.
Claims (3)
1. a gas in mine stay roadway method, it is characterised in that:
The first step, new return air lane (5) shares large section tunnel advance with new gas tail road (2), large section roadway width is new return air lane (5) width, new gas tail road (2) width and divider wall (3) width sum, carries out roof timbering in tunneling process in time;
2nd step, multistage divider wall (3) is built in the middle of large section roadway, and stay between every section of divider wall (3) and establish contact mouth (1) of ventilating, build divider wall (3) constructed rear shutoff ventilate contact mouth (1), the length of every section of divider wall (3) is 6-8 rice, thickness is 0.8-1.2 rice, and the width of each contact mouth (1) of ventilating is 1-1.5 rice; Concrete steps are as follows: 1) determine every section of divider wall (3) position, corner, a whisky jack (14) is set in each position, angle, and in whisky jack (14), place pipe connecting (11-2), support bar (11-1) is connected in pipe connecting docking groove (11-2-1), according to head-room, determining pipe connecting (11-2) and the quantity of support bar (11-1), pipe connecting (11-2) top of topmost is less than whisky jack (14) stroke far from top, tunnel distance; Supporting plate (13) is placed in the surface of contact mouth (1) of ventilating, supporting plate (13) length is greater than contact mouth (1) width that ventilates, supporting plate (13) width is greater than divider wall (3) thickness, operation whisky jack (14), making whisky jack (14) jacking, supporting plate (13) is held out against on the top board of tunnel by the pipe connecting (11-2) of topmost;2) fixed die plate long limit hypomere (12-1), template long limit hypomere (12-1) length is along the distance between tunnel length direction two pillar stiffener (11) outer rims, it it is highly the 1/2 of head-room, run through the boring of hole (11-2-3) opposite position with pipe connecting on template long limit hypomere (12-1), run through hole (11-2-3) with holding bolt (16) through boring and pipe connecting, long for template limit hypomere (12-1) is fixed on pillar stiffener (11), 3) fixed die plate short limit hypomere (12-3), template short limit hypomere (12-3) length is greater than along span length direction two pillar stiffener (11) outer rim distance, it it is highly the 1/2 of head-room, in template short limit hypomere (12-3) and the boring of pipe connecting inner thread mouth (11-2-2) correspondence position, through boring, short for template limit hypomere (12-1) is fixed on pillar stiffener (11) with holding bolt (16), 4) fixed L shape only pulpboard (15), after template long limit hypomere (12-1), template short limit hypomere (12-3) have been fixed, personnel enter the internal space that template is formed, cleaning template lower rim and template are contacted rubble, the broken coal of position with roadway floor, then by L-shaped only pulpboard respectively by inside inner side, template long limit hypomere (12-1) with roadway floor intersection and template short limit hypomere (12-3) and roadway floor intersection, 5) build bottom concrete, concrete height is watered to mounting template top along the height of flush, 6) section (12) on the long limit of fixed die plate, on the long limit of template, section (12) length is along the distance between tunnel length direction two pillar stiffener (11) outer rims, it it is highly the 1/2 of head-room, on the long limit of template, section (12) and pipe connecting run through hole opposite position boring, hole (11-2-3) is run through through boring and pipe connecting with holding bolt (16), section on long for template limit is fixed on pillar stiffener (11), on the long limit of template, lower part of section (12) is also provided with circular grouting hole (12-4), on the long limit of template, the top of section is also provided with semicircle extravasating hole (12-5), 7) section (12-2) on the short limit of fixed die plate, on the short limit of template, section (12-2) length is greater than along span length direction two pillar stiffener (11) outer rim distance, it it is highly the 1/2 of head-room, on the short limit of template, section and the boring of pipe connecting inner thread mouth correspondence position, be fixed on pillar stiffener (11) on through boring by section on short for template limit with holding bolt (16), 8) build top concrete, by section grouting hole (12-4) on the long limit of template toward casting concrete in template, when section extravasating hole (12-5) has concrete to overflow on the long limit of template, stop casting concrete, 9) concrete pouring, adopts natural law curing concrete, 10) form removal, first section (12-2) and template short limit hypomere (12-3) on the short limit of form removal, then section (12) and template long limit hypomere (12-1) on the long limit of form removal, then whisky jack (14) is operated, whisky jack is fallen after rise, removes support bar (11-1) and pipe connecting (11-2) successively, 11) shutoff is ventilated and is got in touch with mouth (1), with steel plate, ventilation is got in touch with mouth shutoff,
3rd step, working face extraction, in working face extraction process, along with working face constantly back advances, opens successively by ventilation contact mouth (1) being positioned at working face rear and worked-out section;
4th step, shutoff is ventilated and is got in touch with mouth (1) again, and after the complete back production of working face terminates, cleaning being positioned at ventilate contact mouth (1) and neighbouring broken spoil thereof, adopt the mode of brick and masonry of cement mortar that ventilations is got in touch with the permanent shutoff of mouth (1), and in the surperficial joint filling of the brick wall built by laying bricks or stones, plaster;
5th step, new gas tail road (2) expands brush, after this working face extraction terminates, need to be undertaken expanding brush by Mei Ti lane, side, the close subsequent work face side of new gas tail road (2), expand new gas tail road (2) width after brush and should meet transportation roadway (8-1) service requirements of subsequent work face, while carrying out expanding refreshing gas tail road, the new top board expanding brush element tunnel is carried out timely supporting.
2. a kind of gas in mine stay roadway method as claimed in claim 1, it is characterised in that: the hoisting capacity of described whisky jack (14) is more than 300t, and stroke is more than 200mm, and piston diameter is 150mm ~ 200mm.
3. a kind of gas in mine stay roadway method as claimed in claim 2, it is characterized in that: on the long limit of described template, on section (12), template long limit hypomere (12-1), the short limit of template, section (12-2), template short limit hypomere (12-3) material are steel plate, steel plate Steel Type is more than Q235, thick more than the 15mm of plate.
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| CN201410640153.2A CN104405404B (en) | 2014-11-14 | 2014-11-14 | A kind of gas in mine stay roadway method |
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| CN104405404B true CN104405404B (en) | 2016-06-08 |
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| CN112593938A (en) * | 2020-12-09 | 2021-04-02 | 中国矿业大学 | Intelligent mining-based large-section roadway prefabricated wall body coal-pillar-free mining method |
| CN112727505B (en) * | 2021-01-29 | 2023-05-23 | 金川集团股份有限公司 | Treatment method for mine drilling through abandoned roadway |
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| RU2097568C1 (en) * | 1995-07-26 | 1997-11-27 | Владимир Владиславович Колмаков | Method of degassing worked-out spaces of mine fields |
| CN102337904B (en) * | 2011-09-09 | 2013-12-18 | 贾民 | Method for retaining gob-side tunnel |
| CN102587942A (en) * | 2012-03-15 | 2012-07-18 | 惠兴田 | Preliminary supporting bag cast isolation wall and placing method thereof |
| 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 |
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