CN104329119B - The outer method of flow control of a kind of mine dynamic water sealing aggregate - Google Patents
The outer method of flow control of a kind of mine dynamic water sealing aggregate Download PDFInfo
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- CN104329119B CN104329119B CN201410434133.XA CN201410434133A CN104329119B CN 104329119 B CN104329119 B CN 104329119B CN 201410434133 A CN201410434133 A CN 201410434133A CN 104329119 B CN104329119 B CN 104329119B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000007789 sealing Methods 0.000 title claims abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000010276 construction Methods 0.000 claims abstract description 11
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 239000003245 coal Substances 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 238000004873 anchoring Methods 0.000 claims description 4
- 238000007712 rapid solidification Methods 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 6
- 229920001131 Pulp (paper) Polymers 0.000 description 5
- 210000002445 nipple Anatomy 0.000 description 4
- 239000004568 cement Substances 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 241001133184 Colletotrichum agaves Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
-
- 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
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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)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention relates to the outer method of flow control of a kind of mine dynamic water sealing aggregate.Existing method is only applicable to the situation that gushing water amount is less, hydraulic pressure is lower, and the Oversize Mine gushing water huge for gushing water amount, hydraulic pressure is higher, existing method applicability is very poor.The outer method of flow control of a kind of mine dynamic water sealing aggregate, first selects the section perpendicular to tunnel axis; Prepare material; Mesh sheet is put into the side of above-mentioned section near projective water point; Vertical shape shelf pipe network lattice on drift section; Construction one row anchor pole on the roadway floor of shelf pipe network lattice back side side; Wear anchor tube to be connected with the anchor head of each anchor pole in ground; Wearing anchor tube near frame pipe network lattice side layout floor file pipe; In face of inflow direction, mesh sheet iron wire is fixed on rack transverse tube; Connect each stay pipe and make it to become a stable entirety.Engineering time of the present invention is short, the situation that can be applied to Oversize Mine gushing water good to aggregate outflow control effects.
Description
Technical field
The invention belongs to water-blocking in mine technical field, be specifically related to the outer method of flow control of a kind of mine dynamic water sealing aggregate.
Background technology
After mine generation water bursting, in order to ensure the safety of this top, ore deposit production system and adjacent ore deposit, flooding water level under often adopting forced-ventilated means control well, now will carry out water blockoff under dynamic regimen condition.Generally, the method of tunnel dynamic water sealing is by boring stake aggregate on ground, aggregate is generally sand, rice stone and rubble, aggregate is relied on to build the section of blocking water in tunnel, progressively reduce the water amount in tunnel, finally inject cement grout thoroughly to be blocked in tunnel, the water inrush channel afterwards again under hydrostatic condition in formation carries out grouting treatment.
The control that current mine dynamic water sealing outflows to aggregate is poor, the aggregate in tunnel is filled in water-blocking in mine, under the continuous erosion resettlement of dynamic water, some defines the wall or enter in water inrush channel of blocking water, effective effect playing water blockoff, with flowing to outside gushing water in coal mine excavation system when some is then in damming.The a large amount of outflows of aggregate outside the section of blocking water of tunnel are significant problems in stopping up water work, the invalid outflow of aggregate means that the material of waste is many on the one hand, that speedily carries out rescue work is long in time limit, the cost of engineering is high, water blockoff terminates to need to do a large amount of aggregate removing work during rear mine recovery is produced on the other hand, the time that seriously delayed mine recovery is produced, the mine majority of domestic employing dynamic water sealing has the experience of this respect.
In the face of a large amount of outflows of aggregate, existing control method one builds chemical pulp wall, and one is that heap builds Coal sack wall.The concrete grammar building chemical pulp wall is urgent construction twice concrete wall in away from the high absolute altitude tunnel of projective water point, and then injecting in the middle of two bodies of wall can the chemical pulp of rapid solidification.Require pre-buried heavy caliber tapping pipe when building wall and install gate valve, water blockoff can control gushing water flow in speedily carrying out rescue work, and reduces the outflow of aggregate with the method reducing dynamic water flow velocity, if desired can valve-off still pool.The concrete grammar that heap builds Coal sack wall piles up the woven bag that coal cinder, spoil are housed in mistake water tunnel, and neat code forms one waterwall well, stops aggregate diffusion with body of wall.The shortcoming that above chemical pulp wall method exists is: the time of 1, building body of wall is longer, needs the time of several days, therefore when gushing water amount is larger, speedily carries out rescue work in critical condition to remove in people and has no time to attend to other, be difficult to time enough and built wall; 2, risky in the process of closing body of wall valve minimizing gushing water flow: because of wall system fast construction, without compression test, therefore valve-off hydraulic pressure rising back wall has the danger washed away by hydraulic pressure completely.Coal sack wall also has similar shortcoming:: the time of 1, building is long, needs several class (8 hours being a class); 2, body of wall easy distortion and collapsing under the washing away of tunnel current, makes the effect that control aggregate outflows have a greatly reduced quality.
From analyzing above, existing method is only applicable to the situation that gushing water amount is less, hydraulic pressure is lower, and the Oversize Mine gushing water huge for gushing water amount, hydraulic pressure is higher, existing method applicability is very poor.
Summary of the invention
The present invention aims to provide the outer method of flow control of a kind of mine dynamic water sealing aggregate, with solve the engineering time that prior art exists long, poor to aggregate outflow control effects, be difficult to be applied to Oversize Mine and dash forward water problem.
For overcoming prior art Problems existing, the technical solution adopted in the present invention is: the outer method of flow control of a kind of mine dynamic water sealing aggregate, comprises the steps: successively
1) according to the complete situation of the mine dynamic water sealing aggregate section of blocking water Len req and tunnel, select the section perpendicular to tunnel axis, this section is that aggregate blocks water the outer end of wall, and the distance of lane point of holing from section to water blockoff wants long enough, simultaneously section part roadway surrounding rock and coal seam complete;
2) the building shelf pipe and the fastener that are slightly less than head-room and span length is prepared on ground; Get out anchor bolt construction equipment and the object such as mesh sheet, iron wire simultaneously, be transported to the above-mentioned cross section place in tunnel; Described fastener comprises cruciform fastening for falsework, word deduction part and rotary buckle;
3) in tunnel, mesh sheet is put into the side of above-mentioned section near projective water point;
4) on drift section according to the level interval of 40 ~ 60 ㎝ and vertical interval build one with the vertical shape shelf pipe network lattice of tunnel axes normal; Build the transverse tube of middle shelf pipe network lattice towards upstream face, standpipe is towards back side;
5) while installation shelf pipe network lattice, interval construction one row anchor pole on the roadway floor of shelf pipe network lattice back side side, bolthole of specifically first constructing, enters rapid solidification high-intensity resin anchoring agent roll under then in bolthole, inserted by anchor pole afterwards, anchor pole head exposes 15 ㎝; In enforcement, single anchor rod is vertical with roadway floor, and full line anchor pole is axially vertical with tunnel; The bolthole degree of depth is 1.5 ~ 2m, and bolt diameter is 16 ~ 18 ㎜, and anchor spacing is about 40 ~ 60 ㎝;
6) anchor tube of wearing having porous is connected with the anchor head of each anchor pole in ground, aperture aligning anchor head on anchor tube will be worn during connection pass successively, wearing anchor tube lies against on roadway floor, is then enclosed within the screw thread of anchor head with clamp nut, tightens anchor head nut and is fixed on wear anchor tube on roadway floor ground;
7) arrange that 2 ~ 3 rows are parallel to the floor file pipe wearing anchor tube near frame pipe network lattice side wearing anchor tube, anchor tube and floor file pipe arrange many perpendicular pipes of keeping a foothold wearing, with cruciform fastening for falsework will keep a foothold manage with wear anchor tube, floor file pipe is connected;
8) adopt rotary buckle and stay pipe that shelf pipe network frame is supported, stay pipe bottom is connected with pipe of keeping a foothold, and stay pipe top is connected with rack standpipe;
9) wear anchor tube, floor file pipe in connection, while pipe of keeping a foothold, stay pipe and rack standpipe, in face of inflow direction, mesh sheet iron wire be fixed on rack transverse tube;
10) utilize cruciform fastening for falsework and be parallel to the tube connector wearing anchor tube, connect each stay pipe and make it to become a stable entirety.
The bolthole degree of depth in described step 5) is 1.5 ~ 2m, and bolt diameter is 16 ~ 18 ㎜, and anchor spacing is 40 ~ 60 ㎝; The revealed section of anchor pole is 15 ㎝; The described wall thickness wearing transverse tube on anchor tube, floor file pipe, pipe of keeping a foothold, stay pipe, tube connector and shelf pipe network lattice and standpipe is 3.5 ㎜, and described step 9) mesh sheet is seat shape establishment steel screen cloth, and its metal string diameter is 3 ~ 4 ㎜, and mesh is 4 ~ 5 ㎜.
Compared with prior art, advantage of the present invention is:
1) the inventive method construction time is short, can complete construction and the installation of anchor pole, shelf pipe and mesh sheet fast; Material usage used in the present invention is few, lightweight, can be transported to job location fast; When material and equipment put in place, within 4 ~ 8 hours, can complete boring and install, the whole engineering time builds Coal sack wall few 1 ~ 2 day than heap, than building chemical pulp wall few 3 ~ 5 days;
2) the present invention effectively can control aggregate outflow: because mesh sheet can not leak through the coarse aggregate such as meter Shi, rubble by current, therefore this method effectively can control the outflow of Large stone coarse aggregate; Especially great effect can be played at Mines dynamic water sealing emergency work;
3) the present invention draws materials conveniently, simple, cheap: anchor pole used in the present invention, clamp nut, resin anchoring agent and shelf pipe, mesh sheet etc. are all the objects that mine is conventional; Bolt support is the modal support pattern of mine laneway, often uses in tunnelling, and workman can skilled operation;
4) apparatus structure that this method is built is stablized, pattern is simple, and the anchored force relying on anchor pole is that stay pipe provides support, and by tube connector, all stay pipes is held together, therefore Stability Analysis of Structures, can not movement and deformation under side pressure piled up by water impact and aggregate; The strong point of this structure is many, be convenient to install: wear on anchor tube and be connected with many pipes of keeping a foothold, the vertical tube of shelf pipe network frame is after transverse tube, vertical tube do not have mesh sheet, can make to keep a foothold pipe and rack standpipe level and vertical on form two right-angle sides of right-angled triangle, upper and lower two tubes there is multiple strong point, is convenient to the fastening of stay pipe and installation;
5) the present invention can be applicable to the nearer position of distance EXIT POINT, reduces length and the aggregate consumption of the section of blocking water, accelerates the time of water blockoff complex ore; Conventional Cut-off and sealing water effectively can not control aggregate outflow, and aggregate groundwater increment is large, and infusion time is long, and after plug-hole of holing in perfusion, cleaning bottom of hole often, and the desilting amount of aggregate is large afterwards, and cause the time lag of water blockoff and complex ore, invalid engineering quantity is large.For large discharge dynamic water sealing engineering, this method can reduce the tens thousand of side of aggregate consumption, reduces corresponding desilting amount simultaneously; Stopping up water work and desilting complex ore time add up and can shift to an earlier date more than 1 ~ February.
Accompanying drawing explanation
Fig. 1 is the structural representation of the device that method of the present invention is formed;
Fig. 2 is the side view of the device that the inventive method is formed;
Fig. 3 is shelf pipe network lattice schematic diagram of the present invention.
Wherein: 1. shelf pipe network lattice, 2. anchor pole, 3. wear anchor tube, 4. mesh sheet, 5. back 6. roadway floor, 7. coal side, 8. floor file pipe, 9. keep a foothold pipe, 10. stay pipe, 11. transverse tubes, 12. standpipes, 13. tube connectors.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
Control a method for mine dynamic water sealing aggregate outflow, comprise the steps: successively
1) according to the section of blocking water Len req and the complete situation in tunnel, select to be not less than the segment length that blocks water, roadway surrounding rock and coal seam complete, perpendicular to a section of tunnel axis, this section is that aggregate blocks water the outer end of wall;
2) according to the cross dimensions in tunnel, prepare the building buckle formula shelf pipe and relevant fastener that are slightly less than head-room and span length in advance, fastener comprises cruciform fastening for falsework, word deduction part and rotary buckle 3 type; Get out anchor pole, clamp nut, fixing agent for anchor poles and the anchor bolt construction such as hammer drill, air compressor machine equipment and mesh sheet, iron wire etc. on ground simultaneously, and above object is transported to predetermined tunnel shutoff position;
Concrete material is as follows:
Frame pipe series: rack standpipe, rack transverse tube; Wear anchor tube, floor file pipe, pipe of keeping a foothold, stay pipe; Tube connector; Pipe nipple frame pipe;
Fastener series: rotate (turning to) fastener, cruciform fastening for falsework (vertical fastener), word deduction part;
Anchor pole series: anchor pole, clamp nut, Anchor Agent;
Mesh sheet series: mesh sheet, iron wire;
3) in tunnel, mesh sheet is put into the side of above-mentioned section near projective water point;
4) on above-mentioned drift section according to the level interval of 40 ~ 60 ㎝ and vertical interval build one with the vertical shape shelf pipe network lattice of tunnel axes normal; Build the transverse tube of middle shelf pipe network lattice towards upstream face, standpipe is towards back side;
5) while installing rack pipe, interval construction one row anchor pole on the roadway floor of frame pipe back side side, bolthole of specifically first constructing, enters rapid solidification high-intensity resin anchoring agent roll under then in bolthole, then inserted by anchor pole, expose anchor pole head 15 ㎝; In enforcement, single anchor rod is vertical with roadway floor, and full line anchor pole is axially vertical with tunnel; The bolthole degree of depth is about 1.5 ~ 2m, and bolt diameter is 16 ~ 18 ㎜, and anchor spacing is about 40 ~ 60 ㎝;
6) anchor tube of wearing having porous is connected with the anchor head of each anchor pole in ground, aperture aligning anchor head on anchor tube will be worn during connection pass successively, wearing anchor tube lies against on roadway floor, is then enclosed within the screw thread of anchor head with clamp nut, tightens anchor head nut and is fixed on wear anchor tube on roadway floor ground;
7) arrange that 2 ~ 3 rows are parallel to the floor file pipe wearing anchor tube near frame pipe network lattice side wearing anchor tube, the many perpendicular pipes of keeping a foothold being parallel to tunnel axis are set wearing on anchor tube and floor file pipe, will keep a foothold with cruciform fastening for falsework and manage and wear anchor tube and floor file pipe is connected;
8) adopt rotary buckle and stay pipe that shelf pipe network frame is supported, stay pipe bottom is connected with pipe of keeping a foothold, and stay pipe top is connected with rack standpipe;
9) wear anchor tube, floor file pipe in connection, while pipe of keeping a foothold, stay pipe and rack standpipe, in face of inflow direction, mesh sheet iron wire be fixed on rack transverse tube;
10) utilize cruciform fastening for falsework and tube connector, connect each stay pipe and make it to become a stable entirety.
In above-mentioned installation steps, require the tube head of various shelf pipe and tunnel roof and floor and two, tunnel lateral wall close contact, because above various shelf length of tube is slightly less than height and the width in tunnel, therefore one of frame pipe lengthens, afterwards with roof and floor and lateral wall dieback by pipe nipple frame pipe; Rotary buckle is used when pipe nipple frame Guan Yuyuan pipe connects.
Transverse tube, standpipe and the pipe nipple frame pipe worn on anchor tube, floor file pipe, pipe of keeping a foothold, stay pipe, tube connector and shelf pipe network lattice of the present invention is the fastener type steel pipe shelf pipe that diameter is 48 ㎜, and its wall thickness is 3.5 ㎜.
Operating principle of the present invention is: mesh sheet is fixed on shelf pipe, and when gushing water amount is huge, current can progressively cover roadway floor and flood barrier.Carry out in the process of damming in ground injecting aggregate, because mesh sheet can be crossed water but can not leak aggregate, therefore in aggregate perfusion water blockoff, most aggregate slowly can be piled up from level to level in block, the aggregate of minute quantity is only had to overflow, along with the increase of aggregate charging quantity, when aggregate is after the section of blocking water successfully connects top, injecting cement paste can realize object of damming.
In the process that aggregate is piled up, due to the limited area of mesh sheet upstream face, inside and outside mesh sheet, hydraulic pressure has certain counteracting simultaneously, and therefore the impact force of current to mesh sheet is little, and the distortion of mesh sheet under water effect is very little.Meanwhile, because the aggregate piled up is subject to the support of multiple shelf pipe and anchor pole in this device, the fines of in addition overflowing also has supporting role to the aggregate in mesh sheet after the outer deposit buildup of mesh sheet, therefore mesh sheet not yielding and damage under the lateral pressure of aggregate.
Claims (2)
1. the outer method of flow control of mine dynamic water sealing aggregate, is characterized in that: comprise the steps: successively
1) according to the complete situation of the mine dynamic water sealing aggregate section of blocking water Len req and tunnel, select the section perpendicular to tunnel axis, this section is that aggregate blocks water the outer end of wall, and the distance of lane point of holing from section to water blockoff wants long enough, simultaneously section part roadway surrounding rock and coal seam complete;
2) the building shelf pipe and the fastener that are slightly less than head-room and span length is prepared on ground; Get out anchor bolt construction equipment and mesh sheet, iron wire simultaneously, be transported to the above-mentioned cross section place in tunnel; Described fastener comprises cruciform fastening for falsework, word deduction part and rotary buckle;
3) in tunnel, mesh sheet is put into the side of above-mentioned section near projective water point;
4) on drift section according to the level interval of 40 ~ 60 ㎝ and vertical interval build one with the vertical shape shelf pipe network lattice of tunnel axes normal; Build the transverse tube of middle shelf pipe network lattice towards upstream face, standpipe is towards back side;
5) while installation shelf pipe network lattice, interval construction one row anchor pole on the roadway floor of shelf pipe network lattice back side side, bolthole of specifically first constructing, enters rapid solidification high-intensity resin anchoring agent roll under then in bolthole, inserted by anchor pole afterwards, anchor pole head exposes 15 ㎝; In enforcement, single anchor rod is vertical with roadway floor, and full line anchor pole is axially vertical with tunnel; The bolthole degree of depth is 1.5 ~ 2m, and bolt diameter is 16 ~ 18 ㎜, and anchor spacing is 40 ~ 60 ㎝;
6) anchor tube of wearing having porous is connected with the anchor head of the every root anchor pole of roadway floor, aperture aligning anchor head on anchor tube will be worn during connection pass successively, wearing anchor tube lies against on roadway floor, then used anchor head nut sleeve on the screw thread of anchor head, tighten anchor head nut and be fixed on roadway floor ground wear anchor tube;
7) arrange that 2 ~ 3 rows are parallel to the floor file pipe wearing anchor tube near shelf pipe network lattice side wearing anchor tube, anchor tube and floor file pipe arrange many perpendicular pipes of keeping a foothold wearing, with cruciform fastening for falsework will keep a foothold manage with wear anchor tube, floor file pipe is connected;
8) adopt rotary buckle and stay pipe that shelf pipe network lattice are supported, stay pipe bottom is connected with pipe of keeping a foothold, and stay pipe top is connected with shelf pipe network lattice standpipe;
9) wear anchor tube, floor file pipe in connection, while pipe of keeping a foothold, stay pipe and shelf pipe network lattice standpipe, mesh sheet iron wire be fixed on shelf pipe network lattice transverse tube in face of inflow direction;
10) utilize cruciform fastening for falsework and be parallel to the tube connector wearing anchor tube, connect each stay pipe and make it to become a stable entirety.
2. the outer method of flow control of a kind of mine dynamic water sealing aggregate according to claim 1, is characterized in that:
The bolthole degree of depth in described step 5) is 1.5 ~ 2m, and bolt diameter is 16 ~ 18 ㎜, and anchor spacing is 40 ~ 60 ㎝; The revealed section of anchor pole is 15 ㎝; The described wall thickness wearing transverse tube on anchor tube, floor file pipe, pipe of keeping a foothold, stay pipe, tube connector and shelf pipe network lattice and standpipe is 3.5 ㎜, and described step 9) mesh sheet is seat shape establishment steel screen cloth, and its wire diameter is 3 ~ 4 ㎜, and mesh is 4 ~ 5 ㎜.
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| CN201410434133.XA CN104329119B (en) | 2014-08-29 | 2014-08-29 | The outer method of flow control of a kind of mine dynamic water sealing aggregate |
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| CN201410434133.XA CN104329119B (en) | 2014-08-29 | 2014-08-29 | The outer method of flow control of a kind of mine dynamic water sealing aggregate |
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| ZA9710337B (en) * | 1996-11-18 | 1998-06-10 | Strata Products Usa Inc | Ventilation seals and stoppings. |
| RU2219350C1 (en) * | 2002-06-10 | 2003-12-20 | Государственное учреждение Кузбасский государственный технический университет | Mine hydraulic insulation bridge |
| CN102121388B (en) * | 2011-01-11 | 2013-07-10 | 河北同成科技股份有限公司 | Method for quickly constructing water gate wall |
| CN203189063U (en) * | 2013-04-17 | 2013-09-11 | 天地科技股份有限公司 | Airtight device for filling support roadway |
| CN103485822B (en) * | 2013-09-18 | 2015-07-15 | 东北大学 | Combined quick blocking and wall retaining device |
| CN103711518A (en) * | 2014-01-03 | 2014-04-09 | 山东汇发矿业科技有限公司 | Portable mine filling retaining wall |
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