CN103334790B - Based on the roof Advance presplitting method of high pressure pneumatic component - Google Patents
Based on the roof Advance presplitting method of high pressure pneumatic component Download PDFInfo
- Publication number
- CN103334790B CN103334790B CN201310309885.9A CN201310309885A CN103334790B CN 103334790 B CN103334790 B CN 103334790B CN 201310309885 A CN201310309885 A CN 201310309885A CN 103334790 B CN103334790 B CN 103334790B
- Authority
- CN
- China
- Prior art keywords
- boring
- high pressure
- roof
- explosion
- gases
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
Based on the roof Advance presplitting method of high pressure pneumatic component, belong to technical field of mine safety.Carry out according to the following steps: 1) perform one group of boring respectively to roof at a certain distance in work plane transport and track crossheading, and often organize boring in fan-shaped layout and towards goaf; 2) the gas explosion rifle be connected with gases at high pressure compressibility is placed in boring, adopts high-strength fast hardening concrete or resin glue sealing of hole; 3) start gases at high pressure compressibility, by the gases at high pressure in high pressure tank by the abrupt release explosion in boring of gas explosion rifle, the crack around boring is communicated with adjacent boring; 4) above-mentioned steps 2 is repeated successively to often organizing boring) and 3), complete the Advance presplitting of roof.The present invention not only eliminates the potential spark hazard of chemical explosive explosion, and because high-pressure gas pressure is controlled and can repeat to carry out concussion burst to rock mass, make the energetic disturbance in coal seam little, top board presplitting is effective, environmental protection, safety and reliable.
Description
Technical field
The present invention relates to technical field of mine safety, particularly relate to a kind of roof Advance presplitting method based on high pressure pneumatic component.
Background technology
For reducing goaf area of suspension roof, shorten first and periodic weighting step pitch, reduce first and periodic weighting intensity, China's roof mainly adopts the methods such as hydrofracturing method, circulating shallow blasting method, ground deep hole blasting method and advanced deep hole presplitting technique to weaken coal seam tight roof.Due to the geostatic stress sensitiveness of fracturing rock crack expansion, the potential spark hazard of chemical explosive explosion and peak value explosion wave, to the strong power disturbance in coal seam, make the effect of above-mentioned technical finesse coal seam tight roof undesirable.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of simple to operate, roof Advance presplitting method based on high pressure pneumatic component that presplitting is effective.
The present invention is based on the roof Advance presplitting method of high pressure pneumatic component, carry out according to following steps:
1) perform one group of boring respectively to roof at a certain distance in work plane transport and track crossheading, this distance can not be greater than first and periodic weighting step pitch, and often organizes boring in fan-shaped layout and towards goaf;
2) the gas explosion rifle be connected with gases at high pressure compressibility is placed in boring, adopts high-strength fast hardening concrete or resin glue sealing of hole;
3) start gases at high pressure compressibility, by the gases at high pressure in high pressure tank by the abrupt release explosion in boring of gas explosion rifle, can repeatedly circulate explosion, and the crack around boring is communicated with adjacent boring;
4) above-mentioned steps 2 is repeated successively to often organizing boring) and 3), complete the Advance presplitting of roof.
In step 1) in, each boring often in group boring is all with the different elevations angle
βand horizontal angle
αpierce roof, and make equal and along advance of the face direction the horizontal projection of the vertical projection of each boring also equal as far as possible.
In step 1) in, the minimum range of foot of hole and working face wall or tunnel sidewall is not less than 5m.
In step 1) in, the diameter of boring is 60 ~ 180mm.
In step 2) in, between drilling end and gas explosion rifle, the sealed borehole length in space is not less than 8m.
In step 3) in, the gas source of gases at high pressure can select air or industrial waste gas CO
2.
In step 4) in, often group boring can by the ascending order explosion successively of horizontal angle.
Compared with prior art, the invention has the beneficial effects as follows: 1) with air or industrial waste gas CO
2for the gas source of high pressure pneumatic component, not only eliminate the spark hazard that chemical explosive explosion is potential, and without chemical contamination, safe and reliable environmental protection again; 2) because high-pressure gas pressure is controlled and can repeat to carry out concussion burst to rock mass, make the energetic disturbance in coal seam little, top board presplitting is effective.
Accompanying drawing explanation
Fig. 1 is the horizontal projection schematic diagram of roof boring in the roof Advance presplitting method that the present invention is based on high pressure pneumatic component;
Fig. 2 is the vertical perspective view of roof boring in the roof Advance presplitting method that the present invention is based on high pressure pneumatic component;
Fig. 3 the present invention is based on roof Advance presplitting method mesohigh gas compression system, the gas explosion rifle of high pressure pneumatic component and schematic diagram of holing;
Be labeled as in figure: 1-10. holes; 11. haulage gates; 12. track crossheadings; 13. roofs; 14. air compressor machines; 15. high pressure tanks; 16. air delivering pipelines; 17. electrically-controlled valve pneumatic operated valve mechanical shearing valve; 18. gas explosion rifles; 19. sealing of hole fast hardening concretes; 20. Grouting Pipe.
Detailed description of the invention
embodiment 1
Below in conjunction with the embodiment (accompanying drawing) of a long 150m work plane, the present invention is further described.
Enforcement based on the roof Advance presplitting method of high pressure pneumatic component comprises the following steps successively:
1) performing one group diameter every 20m respectively to roof 13 at work plane haulage gate 11 and track crossheading 12 is the boring of 90mm, and often group boring is in fan-shaped layout and towards goaf, the elevation angle of boring 1 and 6,2 and 7,3 and 8,4 and 9,5 and 10
βbe respectively 39.23 °, 42.74 °, 44.06 °, 44.5 °, 44.69 °, horizontal angle
αbe respectively 45 °, 24.44 °, 15.12 °, 10.89 °, 8.49 °, drillable length is respectively 17.32m, 26.15m, 39.61m, 53.89m, 68.48m, like this, often the adjacent foot of hole level interval of group boring is 10 ~ 15m, often organize the vertical projection of boring and be respectively 10m and 10m along the horizontal projection in advance of the face direction, and the distance of foot of hole and working face wall or tunnel sidewall is 10m(is not less than 5m);
2) be placed in boring 5 by the gas explosion rifle 18 be connected with gases at high pressure compressibility by air delivering pipeline 16, adopt the gap of high-strength fast hardening concrete 19 pairs of drilling end and gas explosion rifle to carry out sealing of hole, sealed borehole length is not less than 8m;
3) air compressor machine 14 of gases at high pressure compressibility is started, after the gas pressure in high pressure tank 16 reaches setting value, electrically-controlled valve pneumatic operated valve mechanical shearing valve 17 automatically open, gases at high pressure in high pressure tank pass through gas explosion rifle 18 abrupt release explosion in boring 5 through air delivering pipeline 16, repeatedly can to circulate explosion to boring 5, the crack around boring is communicated with adjacent boring; The gas source of gases at high pressure is industrial waste gas CO
2;
4) gas explosion rifle 18 is withdrawn from boring 5, successively above-mentioned steps 2 is repeated to other boring) and 3), complete the Advance presplitting of roof.
Embodiment 2
Embodiment 2 is substantially identical with the step of embodiment 1, and difference is in step 1) in, the diameter of each boring is 75mm.
Embodiment 3
Embodiment 3 is substantially identical with the step of embodiment 1, and difference is in step 3) in, the gas source of gases at high pressure is air.
Embodiment 4
Embodiment 4 is substantially identical with the step of embodiment 1, and difference is in step 1) in, perform one group boring every 30m respectively to roof 13 at work plane haulage gate 11 and track crossheading 12.The elevation angle β of boring 1 and 6,2 and 7,3 and 8,4 and 9,5 and 10 is respectively 41.17 °, 43.11 °, 44.13 °, 44.52 °, 44.70 °, horizontal angle α is respectively 56.31 °, 34.29 °, 22.07 °, 16.09 °, 12.62 °, drillable length is respectively 20.62m, 28.44m, 41.16m, 55.04m, 69.38m, and often group boring is 15m along the horizontal projection in advance of the face direction.
Claims (2)
1., based on a roof Advance presplitting method for high pressure pneumatic component, it is characterized in that carrying out according to following steps:
1) perform one group of boring respectively to roof at a certain distance in work plane transport and track crossheading, this distance can not be greater than first and periodic weighting step pitch, and often organizes boring in fan-shaped layout and towards goaf; Each boring often in group boring is all with the different elevations angle
βand horizontal angle
αpierce roof, and make equal and along advance of the face direction the horizontal projection of the vertical projection of each boring also equal as far as possible; The distance of foot of hole and working face wall or tunnel sidewall is not less than 5m; The diameter of boring is 60 ~ 180mm;
2) the gas explosion rifle be connected with gases at high pressure compressibility is placed in boring, adopts high-strength fast hardening concrete or resin glue sealing of hole; Between drilling end and gas explosion rifle, the sealed borehole length in space is not less than 8m;
3) start gases at high pressure compressibility, by the gases at high pressure in high pressure tank by the abrupt release explosion in boring of gas explosion rifle, can repeatedly circulate explosion, and the crack around boring is communicated with adjacent boring;
4) above-mentioned steps 2 is repeated successively to often organizing boring) and 3), complete the Advance presplitting of roof; Often the ascending order explosion successively of horizontal angle is pressed in group boring.
2. the roof Advance presplitting method based on high pressure pneumatic component according to claim 1, is characterized in that in step 3) in, the gas source of gases at high pressure can select air or industrial waste gas CO
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310309885.9A CN103334790B (en) | 2013-07-23 | 2013-07-23 | Based on the roof Advance presplitting method of high pressure pneumatic component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310309885.9A CN103334790B (en) | 2013-07-23 | 2013-07-23 | Based on the roof Advance presplitting method of high pressure pneumatic component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103334790A CN103334790A (en) | 2013-10-02 |
| CN103334790B true CN103334790B (en) | 2015-10-28 |
Family
ID=49242994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310309885.9A Active CN103334790B (en) | 2013-07-23 | 2013-07-23 | Based on the roof Advance presplitting method of high pressure pneumatic component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103334790B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481537A (en) * | 2014-11-18 | 2015-04-01 | 山西潞安环保能源开发股份有限公司 | Gas phase fracturing roof weakening treatment and safety caving method |
| CN104712338A (en) * | 2015-01-15 | 2015-06-17 | 山东科技大学 | Thick seam fully-mechanized caving faces double-layer hard-and-thick strata advance presplitting method |
| CN104763426B (en) * | 2015-02-12 | 2017-01-25 | 太原理工大学 | Method for low temperature precracking of thick hard difficult-to-break coal mine top board by liquid nitrogen |
| CN104963700B (en) * | 2015-06-30 | 2017-02-08 | 中国矿业大学 | Soft rock roadway surrounding rock high pressure gas active presplitting grouting device and method |
| CN105156134B (en) * | 2015-06-30 | 2017-04-05 | 中国矿业大学 | The multistage presplitting grout transformation method of Deep Soft Rock Tunnel country rock gases at high pressure and its transformation device |
| CN105781549B (en) * | 2016-04-25 | 2019-03-12 | 重庆科技学院 | A kind of external pressure combines the device and method of shot rock with internal water pocket |
| CN105807800B (en) * | 2016-04-26 | 2019-01-04 | 辽宁工程技术大学 | Pressure-air demolition set tele-control system and control method |
| CN105735993B (en) * | 2016-04-26 | 2017-12-19 | 辽宁工程技术大学 | A kind of method of the preventing and treating tight roof type bump based on carbon dioxide explosion |
| CN105804753B (en) * | 2016-04-26 | 2018-01-30 | 辽宁工程技术大学 | A kind of method of the reduction hard coal seam Sub-Level Caving based on carbon dioxide explosion |
| CN106703808A (en) * | 2016-07-06 | 2017-05-24 | 中国矿业大学 | Method for increasing end top coal recovery rate by means of thick coal seam fully-mechanized caving face mining roadway drilling presplitting |
| CN106996305B (en) * | 2017-05-22 | 2019-08-06 | 中国矿业大学 | A kind of coal mine gob Adjacent Working Face relief range measuring method |
| CN107816352A (en) * | 2017-10-16 | 2018-03-20 | 安徽理工大学 | A kind of method of the hard thick top plate pressure relief erosion control of waterpower cutting |
| CN108661695A (en) * | 2018-03-27 | 2018-10-16 | 山东科技大学 | A kind of hypotonicity coal seam efficient water injection method |
| CN110878694B (en) * | 2019-12-13 | 2021-06-04 | 山东科技大学 | Protection method for mining-influenced impact dangerous roadway during overhaul |
| CN111456730B (en) * | 2020-04-14 | 2022-02-22 | 西安闪光能源科技有限公司 | Method for forming weak protective layer above mine roadway |
| CN114183138B (en) * | 2021-10-12 | 2023-10-20 | 安徽理工大学 | Coal bed non-mining drilling pre-splitting blasting method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5199766A (en) * | 1991-12-11 | 1993-04-06 | Atlantic Richfield Company | Cavity induced stimulation of coal degasification wells using solvents |
| CN101813002A (en) * | 2010-04-26 | 2010-08-25 | 张海成 | Coal seam pre-splitting method based on gas extraction |
| CN101892841A (en) * | 2010-07-05 | 2010-11-24 | 陕西省煤炭地质测量技术中心 | Observation system of water injection in fractured zone in coal seam goaf |
| CN202215279U (en) * | 2011-09-12 | 2012-05-09 | 张海成 | Coal seam presplitting device |
| CN102828735A (en) * | 2012-05-14 | 2012-12-19 | 中国石油大学(华东) | Method for improving shale gas well recovery ratio on basis of air knocking |
| CN102852506A (en) * | 2012-10-17 | 2013-01-02 | 中国矿业大学 | High-pressure pneumatic blasting pressure relieving and transmission increasing method |
-
2013
- 2013-07-23 CN CN201310309885.9A patent/CN103334790B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5199766A (en) * | 1991-12-11 | 1993-04-06 | Atlantic Richfield Company | Cavity induced stimulation of coal degasification wells using solvents |
| CN101813002A (en) * | 2010-04-26 | 2010-08-25 | 张海成 | Coal seam pre-splitting method based on gas extraction |
| CN101892841A (en) * | 2010-07-05 | 2010-11-24 | 陕西省煤炭地质测量技术中心 | Observation system of water injection in fractured zone in coal seam goaf |
| CN202215279U (en) * | 2011-09-12 | 2012-05-09 | 张海成 | Coal seam presplitting device |
| CN102828735A (en) * | 2012-05-14 | 2012-12-19 | 中国石油大学(华东) | Method for improving shale gas well recovery ratio on basis of air knocking |
| CN102852506A (en) * | 2012-10-17 | 2013-01-02 | 中国矿业大学 | High-pressure pneumatic blasting pressure relieving and transmission increasing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103334790A (en) | 2013-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103334790B (en) | Based on the roof Advance presplitting method of high pressure pneumatic component | |
| WO2019242191A1 (en) | Hydraulic cutting seam and multistage combustion shock wave combined coal-fracturing gas extraction method | |
| CN102678120B (en) | Method for releasing pressure and removing danger of rock burst | |
| AU2014336858B2 (en) | Method for enhanced fuel gas extraction by coal mine underground gas-liquid dual-phase alternating phase-driven fracturing of coal body | |
| CN103195466B (en) | A kind of directed hydraulic pressure demolition improves the method for gas permeability of coal seam | |
| CN104314606B (en) | Hydraulic slotted liner technique and the combined reinforced pumping method of gas explosion fracturing coal body in a kind of boring | |
| CN101718191B (en) | Directional cracking method for waterpower slotting | |
| CN104234739B (en) | A kind of gas blastingfracture coal body enhanced gas extraction method in boring | |
| CN104763426B (en) | Method for low temperature precracking of thick hard difficult-to-break coal mine top board by liquid nitrogen | |
| CN103924956A (en) | Advanced pre-splitting method for lump coal mining | |
| CN105756599A (en) | Coal mine two-end gas plug and middle water seal layer penetrating drill hole sealing device and method | |
| CN103883304B (en) | A kind of gasifying underground coal method building gasification furnace passage | |
| CN102071961B (en) | Downward gas drainage drill hole and pressure testing drill hole sealing method | |
| CN104763427B (en) | A kind of supercritical CO2the thick hard difficulty in presplitting colliery collapses the method for top board | |
| CN107120137B (en) | A kind of coal roadway tunneling is along seat earth Deephole pre-splitting blasting pumping method | |
| CN105114116A (en) | Method for strengthening regional gas extraction through hydro-thermal coupling fracturing | |
| CN103277129A (en) | Technology preventing gas on upper corner of coal mining working face from exceeding limit | |
| CN104405358A (en) | Method for fracturing coal seam by employing high-pressure gas | |
| CN109488370B (en) | Underground limestone water exploration and drainage drilling construction method | |
| CN110656936A (en) | Mine roof directional roof cutting pressure relief method based on static expanding agent | |
| CN104989362A (en) | Coal seam air injection expansion secondary permeability improvement method adopted after liquid CO2 blasting and used for promoting gas extraction | |
| Zhao et al. | Well completion technology using screen pipe for horizontally-intersected well in soft coal seam | |
| CN111810164B (en) | Hard roof cutting method based on perforation and hydraulic fracturing | |
| CN104912588A (en) | Spalling permeability increasing method for rapid excavation of underground seam gateway | |
| CN108708694B (en) | High-pressure gas-liquid microbubble permeability increasing method for low-permeability coal seam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |