CN106321142A - Rock cross-cut coal uncovering method combining microwave-assisted extraction with grouting reinforcement - Google Patents
Rock cross-cut coal uncovering method combining microwave-assisted extraction with grouting reinforcement Download PDFInfo
- Publication number
- CN106321142A CN106321142A CN201610941356.4A CN201610941356A CN106321142A CN 106321142 A CN106321142 A CN 106321142A CN 201610941356 A CN201610941356 A CN 201610941356A CN 106321142 A CN106321142 A CN 106321142A
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- Prior art keywords
- microwave
- coal
- grouting
- waveguide
- pipe
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- 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.)
- Pending
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- 239000003245 coal Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000000874 microwave-assisted extraction Methods 0.000 title claims abstract description 10
- 239000011435 rock Substances 0.000 title abstract 4
- 230000002787 reinforcement Effects 0.000 title abstract 2
- 239000003960 organic solvent Substances 0.000 claims abstract description 10
- 230000005855 radiation Effects 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims description 19
- 238000005086 pumping Methods 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000007569 slipcasting Methods 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 5
- 238000007796 conventional method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 238000003795 desorption Methods 0.000 abstract description 7
- 230000035699 permeability Effects 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 abstract description 2
- 238000000638 solvent extraction Methods 0.000 abstract description 2
- 239000000284 extract Substances 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 238000004080 punching Methods 0.000 description 6
- 239000004575 stone Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229950000845 politef Drugs 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000023753 dehiscence Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 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
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to a rock cross-cut coal uncovering method combining microwave-assisted extraction with grouting reinforcement and belongs to the technical field of rock cross-cut coal uncovering under coal mines. The method comprises steps as follows: drilling is performed from a cross-cut to a coal seam, a microwave antenna is connected to a coaxial waveguide inner end and sent into a drill hole, a waveguide switch, a rectangular waveguide and a microwave generator are sequentially connected at the outer end of the coaxial waveguide; then an organic solvent is injected into the coal layer, meanwhile, a microwave radiation coal seam is opened, under the assistance of microwaves, the organic solvent extracts small organic molecules in coal to dredge pores and promote gas desorption, the coal becomes loose and fragile, at the moment, grouting is performed in the drill hole, so that the coal mass is reinforced, and coal uncovering is performed finally. Grouting, solvent extraction and microwave radiation are combined, the porosity and permeability are greatly improved, and gas desorption is promoted, so that the safety of rock cross-cut coal uncovering is substantially improved.
Description
Technical field
The present invention relates to the coal uncovering method that a kind of On Microwave-assisted Extraction combines with grouting and reinforcing, belong to underground coal mine
Stone door punching coal correlative technology field, is particularly suited for soft high gas layer.
Background technology
Being easiest to big prominent of generation scale intensity in outburst danger mine during stone door punching coal, serious restriction mine safety is fast
Fast-growing is produced, and causes debalance of preparation and winning work, also results in serious shade to the psychology of people.Chinese scholars, from prominent mechanism, proposes
Many stone door punching coal anti-burst methods: hydraulic flushing in hole, standing, hydraulic slotted liner technique, metallic framework and grouting and reinforcing etc., these measures
Achieving certain effect in stone door punching coal outburst prevention work, but there is also significant limitation, release is anti-reflection, and technology makes
Coal seam becomes loose frangible thus outburst hazard and strengthens.It is organic that organic solvent extracting under microwave-assisted can be dissolved in coal
Micromolecular compound, the porous dehiscence gap of dredging coal body, substantially increase porosity and the permeability of coal body, meanwhile, microwave radiation energy
Enough effectively facilitating desorption of mash gas, the thermal stress of generation can tear coal body especially, produces micro-crack.But, this technology due to
Organic solvent is difficult to penetrate into coal body and can not be in colliery scene popularization and application.Therefore, a kind of new technique of research, energy are needed badly
Enough organic solvent extracting is combined with grouting and reinforcing, reach quick fracturing, reaming, the effect of rush desorbing, take off improving crossdrift
The safety of coal.
Summary of the invention
Technical problem: it is an object of the invention to the deficiency overcome in prior art, it is provided that a kind of method is simple, can be significantly
Improve the coal uncovering method that the On Microwave-assisted Extraction of stone door punching coal efficiency combines with grouting and reinforcing.
Technical scheme: the coal uncovering method that the On Microwave-assisted Extraction of the present invention combines with grouting and reinforcing, is included in coal
A slip casting of constructing in Ceng is holed with solvent, further comprising the steps of:
Grouting Pipe, microwave pillar and gas pumping pipe is sent in a, boring after having constructed, described three pipes
The exposed junction distance away from aperture is 0.1m；
B, microwave antenna is connected to coaxial waveguide front end, is then fed in microwave pillar, until microwave antenna arrives micro-
The inner of ripple pillar；
C, the exposed junction of coaxial waveguide being connected waveguide switch, waveguide switch is sequentially connected with rectangular waveguide and microwave is sent out
Raw device；
D, Grouting Pipe outer end connect high-pressure rubber pipe, high-pressure rubber pipe connecting tee, a threeway wherein road is sequentially connected with molten
Agent pump and solvent tank, another road of threeway is sequentially connected with grouting pump and slurry tank；
E, hole packer is utilized to block at drilling front end；
F, after sealing of hole operation completes, open solvent pump, make the organic solvent in solvent tank inject coal through high-pressure rubber pipe
Layer；
G, note solvent while, open microwave generator, the microwave of generation pass sequentially through rectangular waveguide, waveguide switch and
Coaxial waveguide, finally arrives microwave antenna, and by microwave antenna to boring radiation；
H, when the abundant desorbing of gas, gas pumping pipe is connected with fire damp pipe network, carries out gas pumping；
After i, gas pumping terminate, close solvent pump, open grouting pump, slip casting in boring, make the coal body around boring
Reinforced, tunneled the most according to a conventional method, and entered top board 2m through coal seam, completed exposed coal work.
Described microwave pillar uses can protect again the politef of microwave antenna and coaxial waveguide by microwave transmissive
Material is manufactured and is formed.
Beneficial effect: the present invention is by noting organic solvent in coal seam, and uses microwave radiation coal seam, in the auxiliary of microwave
Under, the organic molecule in organic solvent extracting coal, to dredge hole, promote desorption of mash gas, ature of coal becomes loose frangible；Meanwhile,
The heat effect that microwave radiation produces can promote desorption of mash gas, and the thermal stress of generation more can tear coal body, produces micro-crack；Take out
To coal seam slip casting after mash gas, coal body is reinforced, the most last exposed coal.The present invention is by slip casting, solvent extraction and microwave radiation
Combine, substantially increase coal seam porosity, permeability, promote desorption of mash gas, thus stone door punching coal peace is greatly improved
Quan Xing, has wide applicability in the art.
Accompanying drawing explanation
Fig. 1 is the coal uncovering method schematic diagram that the On Microwave-assisted Extraction of the present invention combines with grouting and reinforcing.
In figure: 1-coal seam, 2-holes, 3-Grouting Pipe, 4-gas pumping pipe, 5-microwave antenna, 6-coaxial waveguide, 7-microwave
Pillar, 8-waveguide switch, 9-rectangular waveguide, 10-microwave generator, 11-hole packer, 12-high-pressure rubber pipe, 13-solvent pump,
14-solvent tank, 15-grouting pump, 16-slurry tank, 17-threeway.
Detailed description of the invention
Below in conjunction with the accompanying drawings one embodiment of the present of invention is further described:
The coal uncovering method that the On Microwave-assisted Extraction of the present invention combines with grouting and reinforcing: specifically comprise the following steps that
First, a boring 2 of constructing in coal seam 1, send into Grouting Pipe 3, microwave pillar in the boring 2 after having constructed
7 and gas pumping pipe 4 until three pipes exposed junction distance 0.1m position, aperture, described microwave pillar 7 is politef
Material.Then, microwave antenna 5 outer end is connected coaxial waveguide 6, and microwave antenna 5 is sent into microwave together with coaxial waveguide 6
In pillar 7, until microwave antenna 5 arrives the inner terminal of microwave pillar 7；The outer end of coaxial waveguide 6 is connected waveguide switch
8, waveguide switch 8 is connected with rectangular waveguide 9, and rectangular waveguide 9 is connected with microwave generator 10, wherein, and microwave generator 10
Operating frequency is 2.45GHz, and power is 2kW.Meanwhile, connecting high-pressure rubber pipe 12 in Grouting Pipe 3 outer end, high-pressure rubber pipe 12 connects
Threeway 17, a threeway 17 wherein road is sequentially connected with solvent pump 13 and solvent tank 14, and another road of threeway is sequentially connected with grouting pump 15 He
Slurry tank 16.After pipeline connects, implement sealing of hole operation, i.e. utilize hole packer 11 to block at boring 2 leading portions；Treat slurry envelope
After hole operation completes, open solvent pump 13, make the organic solvent tetrahydrofuran in solvent tank 14 through high-pressure rubber pipe 12 and slip casting
Pipe 3 injects coal seam 1；Meanwhile, opening microwave generator 10, the microwave of generation passes sequentially through rectangular waveguide 9, waveguide switch 8 and
Coaxial waveguide 6, finally arrives microwave antenna 5 and by microwave antenna 5 to boring 2 radiation, under the effect of microwave radiation, You Jirong
Organic molecule in agent extracting coal, dredges hole, promotes desorption of mash gas, and ature of coal becomes loose frangible.When the abundant desorbing of gas
Time, gas pumping pipe 4 is connected with fire damp pipe network, carries out gas pumping.After gas pumping terminates, close solvent pump 13,
Opening grouting pump 15, to coal seam 1 slip casting, coal body is reinforced, and tunnels the most according to a conventional method, and enters top board through coal seam
2m, completes exposed coal work.
Claims (2)
1. the coal uncovering method that On Microwave-assisted Extraction combines with grouting and reinforcing, is included in construction one in coal seam (1)
Boring (2), it is characterised in that further comprising the steps of:
Grouting Pipe (3), microwave pillar (7) and gas pumping pipe (4) is sent in a, boring (2) after having constructed, described three
The exposed junction of the individual pipe distance away from aperture is 0.1m；
B, microwave antenna (5) is connected to coaxial waveguide (6) front end, is then fed in microwave pillar (7), until microwave antenna
(5) the inner of microwave pillar (7) is arrived；
C, the exposed junction of coaxial waveguide (6) being connected waveguide switch (8), waveguide switch (8) is sequentially connected with rectangular waveguide (9)
With microwave generator (10)；
D, Grouting Pipe (3) outer end connect high-pressure rubber pipe (12), high-pressure rubber pipe (12) connecting tee (17), threeway (17) is wherein
One tunnel is sequentially connected with solvent pump (13) and solvent tank (14), and threeway (17) another road is sequentially connected with grouting pump (15) and slurry tank
(16)；
E, boring (2) front end utilize hole packer (11) to block；
F, after sealing of hole operation completes, open solvent pump (13), make the organic solvent in solvent tank (14) through high-pressure rubber pipe
(12) coal seam is injected；
While g, note solvent, opening microwave generator (10), the microwave of generation passes sequentially through rectangular waveguide (9), waveguide transitions
Device (8) and coaxial waveguide (6), finally arrive microwave antenna (5), and by microwave antenna (5) to boring (2) radiation；
H, when the abundant desorbing of gas, gas pumping pipe (4) is connected with fire damp pipe network, carries out gas pumping；
After i, gas pumping terminate, close solvent pump (13), open grouting pump (15), slip casting in boring (2), make boring (2)
Coal body around is reinforced, and tunnels the most according to a conventional method, and enters top board 2m through coal seam, completes exposed coal work.
The coal uncovering method that a kind of On Microwave-assisted Extraction the most according to claim 1 combines with grouting and reinforcing, it is special
Levy and be: described microwave pillar (7) uses can protect again gathering of microwave antenna (5) and coaxial waveguide (6) by microwave transmissive
Tetrafluoroethene material is manufactured and is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610941356.4A CN106321142A (en) | 2016-11-01 | 2016-11-01 | Rock cross-cut coal uncovering method combining microwave-assisted extraction with grouting reinforcement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610941356.4A CN106321142A (en) | 2016-11-01 | 2016-11-01 | Rock cross-cut coal uncovering method combining microwave-assisted extraction with grouting reinforcement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106321142A true CN106321142A (en) | 2017-01-11 |
Family
ID=57818345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610941356.4A Pending CN106321142A (en) | 2016-11-01 | 2016-11-01 | Rock cross-cut coal uncovering method combining microwave-assisted extraction with grouting reinforcement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106321142A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812512A (en) * | 2017-03-02 | 2017-06-09 | 新疆大学 | Low-permeability water-bearing coal seam reservoirs microwave steam explosion is anti-reflection drop absorbing method |
| CN108978632A (en) * | 2018-07-05 | 2018-12-11 | 浙江科技学院 | With the Grouting Pipe and heating means of heat effect in soil layer |
| CN109162755A (en) * | 2018-09-11 | 2019-01-08 | 中国矿业大学 | A kind of coal uncovering method that electric pulse is combined with grouting and reinforcing |
| CN114352280A (en) * | 2022-01-27 | 2022-04-15 | 辽宁工程技术大学 | Method for improving coal cutting efficiency of hard coal seam based on combination of microwave radiation and liquid injection |
| CN116816385A (en) * | 2023-04-27 | 2023-09-29 | 中铁十一局集团有限公司 | Grouting method and related equipment for water-rich broken surrounding rock |
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|---|---|---|---|---|
| CN102678167A (en) * | 2012-06-11 | 2012-09-19 | 中国矿业大学 | Hydraulic-fracturing rock cross-cut coal uncovering method for short-distance coal beds |
| CN103114871A (en) * | 2013-03-04 | 2013-05-22 | 刘永杰 | Extraction device and method utilizing microwave coal heating layer |
| CN103510957A (en) * | 2013-10-08 | 2014-01-15 | 中国矿业大学 | Combined rock cross-cut coal uncovering method |
| CN105484720A (en) * | 2015-12-29 | 2016-04-13 | 中国矿业大学 | Microwave-assisted extraction and hydrofracture cooperative coal seam anti-reflection method |
| CN105507812A (en) * | 2015-12-29 | 2016-04-20 | 中国矿业大学 | Microwave-radiation in-hole vaporized hydraulic flushing method |
| CN105525901A (en) * | 2015-12-29 | 2016-04-27 | 中国矿业大学 | Coal seam hydrofracture strengthening permeability increasing method based on microwave irradiation |
-
2016
- 2016-11-01 CN CN201610941356.4A patent/CN106321142A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678167A (en) * | 2012-06-11 | 2012-09-19 | 中国矿业大学 | Hydraulic-fracturing rock cross-cut coal uncovering method for short-distance coal beds |
| CN103114871A (en) * | 2013-03-04 | 2013-05-22 | 刘永杰 | Extraction device and method utilizing microwave coal heating layer |
| CN103510957A (en) * | 2013-10-08 | 2014-01-15 | 中国矿业大学 | Combined rock cross-cut coal uncovering method |
| CN105484720A (en) * | 2015-12-29 | 2016-04-13 | 中国矿业大学 | Microwave-assisted extraction and hydrofracture cooperative coal seam anti-reflection method |
| CN105507812A (en) * | 2015-12-29 | 2016-04-20 | 中国矿业大学 | Microwave-radiation in-hole vaporized hydraulic flushing method |
| CN105525901A (en) * | 2015-12-29 | 2016-04-27 | 中国矿业大学 | Coal seam hydrofracture strengthening permeability increasing method based on microwave irradiation |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812512A (en) * | 2017-03-02 | 2017-06-09 | 新疆大学 | Low-permeability water-bearing coal seam reservoirs microwave steam explosion is anti-reflection drop absorbing method |
| CN108978632A (en) * | 2018-07-05 | 2018-12-11 | 浙江科技学院 | With the Grouting Pipe and heating means of heat effect in soil layer |
| CN109162755A (en) * | 2018-09-11 | 2019-01-08 | 中国矿业大学 | A kind of coal uncovering method that electric pulse is combined with grouting and reinforcing |
| CN114352280A (en) * | 2022-01-27 | 2022-04-15 | 辽宁工程技术大学 | Method for improving coal cutting efficiency of hard coal seam based on combination of microwave radiation and liquid injection |
| CN116816385A (en) * | 2023-04-27 | 2023-09-29 | 中铁十一局集团有限公司 | Grouting method and related equipment for water-rich broken surrounding rock |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20171225 Address after: 221116 Research Institute, China University of Mining and Technology, Xuzhou University, Jiangsu, China, Applicant after: China University of Mining & Technology Applicant after: The large Mine Safety Technology of Xuzhou chats and equipment research and development centre Address before: 221116 Research Institute of China University of Mining and Technology,, Jiangsu Applicant before: China University of Mining & Technology |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170111 |