CN105735993B - A kind of method of the preventing and treating tight roof type bump based on carbon dioxide explosion - Google Patents
A kind of method of the preventing and treating tight roof type bump based on carbon dioxide explosion Download PDFInfo
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- CN105735993B CN105735993B CN201610263139.4A CN201610263139A CN105735993B CN 105735993 B CN105735993 B CN 105735993B CN 201610263139 A CN201610263139 A CN 201610263139A CN 105735993 B CN105735993 B CN 105735993B
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000004880 explosion Methods 0.000 title claims abstract description 26
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 25
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005553 drilling Methods 0.000 claims abstract description 48
- 238000005422 blasting Methods 0.000 claims abstract description 15
- 239000011435 rock Substances 0.000 claims abstract description 10
- 239000003245 coal Substances 0.000 claims description 17
- 238000000605 extraction Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 239000002360 explosive Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000010454 slate Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
- E21C37/14—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by compressed air; by gas blast; by gasifying liquids
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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)
- Earth Drilling (AREA)
Abstract
The invention belongs to technical field of mine safety, and in particular to a kind of method of the preventing and treating tight roof type bump based on carbon dioxide explosion.The present invention be first working face both sides haulage drift and return aircourse close to working face vertex, to the roof strata direction on the inside of working face, some groups of drillings are set, carbon dioxide fracturing device is installed in drilling, packet presplit blasting is carried out successively, taken over simultaneously close at the top of the tailentry road of working face, move towards to arrange the drilling that several are parallel to each other along working face, drilling, which is pointed to, certain angle of inclination inside roof strata and between return aircourse, presplit blasting is carried out, realizes that the roof strata of working face front and side cuts top explosion.The present invention can effectively control the pressure bump behavior under the occurrence condition of tight roof rock stratum, cause impulsion pressure significant for preventing and treating tight roof, its method is simple, and security is good, simple to operate, easy to use, has wide applicability.
Description
Technical field
The invention belongs to technical field of mine safety, and in particular to a kind of preventing and treating tight roof based on carbon dioxide explosion
The method of type bump.
Background technology
Liquid carbon dioxide blaster is simultaneously released using the heated vaporized expanding of liquid carbon dioxide, quick release gases at high pressure
The device of the disrumpent feelings rock of enough blasting energies or coal breakage is put, substitutes the detonator in traditional coal mining or Deephole pre-splitting blasting to fry
Medicine, overcome and blow the shortcomings of destructiveness in exploitation and presplitting is big, and dangerous high ore body crushes up with dynamite in the past, have and do not produce
Spark, without blasting fume, plasting damage effect it is big, can Reusability the advantages that, be conventional explosives preferable alternate device, opened for mine safety
Adopt and provide Reliable guarantee, generally applicable and colliery and non-coal mine with presplitting.
On many mining areas in China (such as Datong Mine Area, Shuozhou mining area, Yulin infrared ray light shine) coal seam preservation have intensity it is high,
Thickness is big, the tight roof of good integrity, and because top plate preservation is complete, lithology is hard, with the propulsion of working face, tight roof
Large area is outstanding without collapsing, and so as to cause goaf space gradually to increase, has gathered great number of elastic energy around goaf in coal and rock
Amount, not only influence goaf nearby in coal body tunnel stability, and once hang dew top plate and collapse suddenly disconnected, broken in tight roof
Substantial amounts of elasticity can discharge suddenly in disconnected or sliding Instability, form sharp pounding, cause tight roof type bump.Together
When, due to the collective effect on the outstanding top of operated adjacent face goaf and this work face goaf tight roof, make to face sky tunnel and enclose
Rock is in high stress level, and roadway deformation is violent, if fracture also results in bump to tight roof suddenly, to facing sky tunnel
Security form greatly threaten.
In the prior art, the method for preventing and treating top plate impact is that roadway in the roof is dug in top plate, by roadway in the roof to top
Plate carries out deep hole blasting, artificially cuts off top plate, and then promote goaf top plate inbreak, intensity and punching when reducing roof weighting
Hitting property.The method of this preventing and treating top plate impact, although avoiding the generation of the bump caused by top plate impacts, needs
Roadway in the roof is dug in top plate, cost is higher.The method of conventional process tight roof is to use explosive blasting overhead caving, but
Be this method for highly gassy mine, great potential safety hazard be present, no matter approaches the working surface goaf or this work
Substantial amounts of gas may all be gathered by making the goaf in face.
The content of the invention
The problem of existing for prior art, the present invention provide a kind of preventing and treating tight roof type based on carbon dioxide explosion
The method of bump, it is therefore an objective to by using carbon dioxide explosion tight roof, security is improved while reducing cost.
Realize that the technical scheme of the object of the invention follows the steps below：
（1）Roof strata directly over working face cuts top explosion：Before to working face extraction, respectively in working face both sides
Haulage drift and return aircourse set some groups of brills close to the vertex of working face to the roof strata direction on the inside of working face
Hole, haulage drift drilling and return aircourse drilling are symmetric, and every group of drilling is made up of 3 drillings, working face tendency length
For L, the bottom hole of 3 drilling respectively at 1.5/8L, 2.5/8L and 3.5/8L of working face tendency, push up by drilling hole bottom to coal seam
The vertical range of plate is 3~5 times of coal seam thickness h；
Carbon dioxide fracturing device is installed in drilling, packet presplit blasting is carried out successively, realizes the top directly over working face
Slate layer cuts top explosion；
（2）The roof strata of work side cuts top explosion：Taken over close at the top of the tailentry road of working face,
Move towards to arrange the drilling that several are parallel to each other along working face, drilling, which is pointed to, one inside roof strata and between return aircourse
Fixed angle of inclination, the vertical range at drilling hole bottom to roof are 3~5 times of coal seam thickness h；
Carbon dioxide fracturing device is installed in drilling, presplit blasting is carried out, realizes that the roof strata of work side cuts top
Explosion.
Wherein, described step（1）In some groups of drilling aperture at intervals of 15m~30m.
Described step（2）In the vertical intervals of several drillings being parallel to each other be 10m~15m.
Described step（2）In drilling and the angle of return aircourse be 30 ° ~ 60 °.
Described bore diameter is 60mm~90mm.
Wired in series is used between described carbon dioxide fracturing device, bottom hole is pushed to by rig, sealed using hole packer
Hole, sealed borehole length are 0.1~0.2 times of hole depth.
Compared with prior art, the features of the present invention and beneficial effect are:
The present invention is to use carbon dioxide Blasting Control tight roof type bump, is triggered by mining blaster preset
Heater in liquid storage pipe realizes quick heating, and the liquid carbon dioxide in liquid storage pipe is become into gaseous state breaks through level pressure shearing piece,
The extra-high sprayed from explosion release pipe acts on coal body and produces broken region, and produces new crack in the releasing direction,
And then the effect of rock presplitting；By carrying out explosion to the tight roof directly over working face with work side, with
The back production tight roof of working face can be caving in time, realize stress transfer and country rock reduction, avoid tight roof type impact ground
The generation of pressure, while reduce and face sky roadway surrounding rock stress, realize the stabilization for facing sky roadway surrounding rock.
The present invention can effectively control the pressure bump behavior under the occurrence condition of tight roof rock stratum, for preventing and treating tight roof
Cause impulsion pressure significant, its method is simple, and security is good, simple to operate, easy to use, has extensive practical
Property.
Brief description of the drawings
Fig. 1 is that the method drilling arrangement of the preventing and treating tight roof type bump based on carbon dioxide explosion of the present invention is shown
It is intended to；
Fig. 2 is Fig. 1 Section A-A figure；
Fig. 3 is Fig. 1 section B-B figure；
Wherein：1：Working face；2：Haulage drift；3：Return aircourse；4：Take over working face；5：Drilling；6：Roof strata；7：
Coal seam；Arrow represents direction of extraction.
Embodiment
Embodiment
The embodiment of the present invention illustrates by taking the ore deposit of Shaanxi as an example, and it is bump mine, in the past using explosive blasting
Release, effect is general, and potential safety hazard be present.
Using the method release of the preventing and treating tight roof type bump based on carbon dioxide explosion of the present invention, working face
Length is 200m, and coal thickness is 10m, and top plate is based on peldon.Rig model ZDY4000S, the drill pipe diameter 60mm of use
With carbon dioxide fracturing device, as shown in Fig. 1 ~ Fig. 3, follow the steps below：
（1）Roof strata directly over working face cuts top explosion：Before to the back production of working face 1, respectively in the both sides of working face 1
Haulage drift 2 and return aircourse 3 close to the vertex of working face, set to the direction of roof strata 6 of the inner side of working face 1 some
Group drilling 5, the drilling of the side of haulage drift 2 and the drilling of the side of return aircourse 3 are symmetric, as shown in Fig. 2 every group of drilling
It is made up of 3 drillings 5, it is 200m that working face 1, which is inclined to length L, and the bottom hole of 3 drilling 5 is respectively positioned at the 1.5/ of working face tendency
At 8L, 2.5/8L and 3.5/8L, the vertical range at drilling hole bottom to roof is 4 times of coal seam thickness h；
Carbon dioxide fracturing device is installed in drilling, carries out packet presplit blasting successively, realizes the top directly over working face 1
Slate layer 6 cuts top explosion；
（2）The roof strata of work side cuts top explosion：Pushed up close to the tailentry road 3 for taking over working face 4
Portion, move towards to arrange several drillings 5 for being parallel to each other along working face, drilling 5 point to the inside of roof stratas 6 and with return aircourse 3
Between have certain angle of inclination, the vertical range of 5 bottom holes of drilling to the top plate of coal seam 7 is 4 times of the thickness of coal seam 7；
Carbon dioxide fracturing device is installed in drilling, presplit blasting is carried out, realizes that the roof strata of work side cuts top
Explosion.
Wherein, described step（1）In some groups of drilling aperture at intervals of 20m.
Described step（2）In drilling and the angle of return aircourse be 60 °.
Described step（2）In the vertical intervals of several drillings being parallel to each other be 15m.
Described bore diameter is 60mm.
Wired in series is used between described carbon dioxide fracturing device, bottom hole is pushed to by rig, sealed using hole packer
Hole, sealed borehole length are 0.1 times of hole depth.
After top is cut in explosion, as the top plate above the stope of working face with work side is caving in time, avoid
The generation of bump.Meanwhile face sky roadway deformation amount relatively cut top before reduce 60%, it is ensured that face the stabilization in sky tunnel.
Claims (2)
- A kind of 1. method of the preventing and treating tight roof type bump based on carbon dioxide explosion, it is characterised in that according to following step It is rapid to carry out：(1) roof strata directly over working face cuts top explosion：Before working face extraction, respectively in the haulage drift of working face both sides Vertex with return aircourse close to working face, some groups of drillings, transportation roadway are set to the roof strata direction on the inside of working face Road is drilled and return aircourse drilling is symmetric, and every group of drilling is made up of 3 drillings, and working face tendency length is L, and 3 are bored The bottom hole in hole respectively positioned at working face tendency 1.5/8L, 2.5/8L and 3.5/8L at, drilling hole bottom to roof it is vertical Distance is 3~5 times of coal seam thickness h；Carbon dioxide fracturing device is installed in drilling, packet presplit blasting is carried out successively, realizes the top plate rock directly over working face Layer cuts top explosion；(2) roof strata of work side cuts top explosion：Taken over close at the top of the tailentry road of working face, along work Make face to move towards to arrange the drilling that several are parallel to each other, drilling is pointed to roof strata inside and between return aircourse had certain Angle of inclination, the vertical range at drilling hole bottom to roof are 3~5 times of coal seam thickness h；Carbon dioxide fracturing device is installed in drilling, presplit blasting is carried out, realizes that the roof strata of work side cuts top explosion；The aperture of some groups of drilling is at intervals of 15m~30m in described step (1)；The vertical interval of several drillings being parallel to each other is 10m~15m in described step (2)；The angle of drilling and return aircourse in described step (2) is 30 °~60 °；Wired in series is used between described carbon dioxide fracturing device, bottom hole is pushed to by rig, sealing of hole, envelope are carried out using hole packer Hole length is 0.1~0.2 times of hole depth.
- 2. a kind of method of preventing and treating tight roof type bump based on carbon dioxide explosion according to claim 1, It is characterized in that described bore diameter is 60mm~90mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610263139.4A CN105735993B (en) | 2016-04-26 | 2016-04-26 | A kind of method of the preventing and treating tight roof type bump based on carbon dioxide explosion |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610263139.4A CN105735993B (en) | 2016-04-26 | 2016-04-26 | A kind of method of the preventing and treating tight roof type bump based on carbon dioxide explosion |
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| CN105735993A CN105735993A (en) | 2016-07-06 |
| CN105735993B true CN105735993B (en) | 2017-12-19 |
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| CN106288988B (en) * | 2016-08-31 | 2018-02-23 | 北京龙德时代技术服务有限公司 | Intelligent carbon dioxide blasting technology method |
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| CN113216965A (en) * | 2021-05-20 | 2021-08-06 | 山西鑫桥科技有限公司 | Method for preventing rock burst |
| CN113153294A (en) * | 2021-06-02 | 2021-07-23 | 江苏徐矿能源股份有限公司张双楼煤矿 | Pre-splitting anti-impact method for lithologic change area of top plate |
| CN113339065B (en) * | 2021-06-29 | 2024-02-02 | 中煤科工开采研究院有限公司 | Method for preventing and controlling rock burst of multi-coal pillar stoping roadway along air |
| CN114183138B (en) * | 2021-10-12 | 2023-10-20 | 安徽理工大学 | Coal bed non-mining drilling pre-splitting blasting method |
| CN114199088B (en) * | 2021-11-16 | 2024-01-02 | 北京中煤矿山工程有限公司 | Brushing and expanding shaft bottom coal bunker hole distribution structure of carbon dioxide fracturing device and brushing and expanding process |
| CN117108295B (en) * | 2023-10-20 | 2024-03-08 | 山东能源集团有限公司 | Advanced presplitting area prevention and control method for rock burst of high-position thick hard rock stratum |
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