CN107816365A - A kind of quick-fried pumping integration anti-burst method of coal seam drilling - Google Patents
A kind of quick-fried pumping integration anti-burst method of coal seam drilling Download PDFInfo
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- CN107816365A CN107816365A CN201711005912.8A CN201711005912A CN107816365A CN 107816365 A CN107816365 A CN 107816365A CN 201711005912 A CN201711005912 A CN 201711005912A CN 107816365 A CN107816365 A CN 107816365A
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- 239000003245 coal Substances 0.000 title claims abstract description 129
- 238000005553 drilling Methods 0.000 title claims abstract description 29
- 238000005086 pumping Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000010354 integration Effects 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 87
- 238000002347 injection Methods 0.000 claims abstract description 37
- 239000007924 injection Substances 0.000 claims abstract description 37
- 238000000605 extraction Methods 0.000 claims abstract description 30
- 238000010276 construction Methods 0.000 claims abstract description 11
- 238000004880 explosion Methods 0.000 claims abstract description 11
- 239000011435 rock Substances 0.000 claims abstract description 9
- 239000002360 explosive Substances 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 6
- 230000007812 deficiency Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 230000006855 networking Effects 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 230000008030 elimination Effects 0.000 abstract description 2
- 238000003379 elimination reaction Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000005641 tunneling Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 239000000243 solution 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
- 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
- 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
- E21B43/263—Methods for stimulating production by forming crevices or fractures using explosives
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
A kind of quick-fried pumping integration anti-burst method of coal seam drilling, a special lane of gas control is arranged in roof or floor strata, the equally distributed drainage holes of construction and blast hole from the special lane of gas control to coal seam, standing is implemented to coal road surrounding medium using blast hole, extraction hole access gas drainage pipeline is subjected to gas pumping；When gas pumping is completed, the sets of holes construction water injection hole in explosion hole site, implement water filling into water injection hole using press water of the underground no more than 10MPa, until can not continue to stop water filling when water filling or water injection hole surrounding rock body seep water into drilling." boring quick-fried pumping " integrated technique can increase coalmass crevasse, reduce gas bearing capacity and gas pressure around coal road, improve coal body moisture content, so as to reduce even elimination Coal Seam Outburst Hazard.
Description
Technical field
The present invention relates to a kind of quick-fried pumping integration anti-burst method of coal seam drilling, can increase coalmass crevasse, reduce gas bearing capacity
With gas pressure, raising coal body moisture content, being particularly suitable for use in, it is dangerous to reduce soft projecting coal bed coal and gas prominent.
Background technology
China is main coal producer in the world, and one of country of coal and gas prominent most serious in the world, its coal
Charcoal output 95% comes from pit mining, and high methane, projecting mine coal production account for more than half.Especially with prominent
When going out in the coal seam of danger to carry out digging operation, gas pressure is higher, coal and rock than relatively soft, drying in the case of,
It is easy to that coal and gas prominent accident occurs, this all constitutes great harm to worker's life security.
The projecting coal bed pressure-relief outburst-prevention measure used at present mainly has hydraulic fracturing, hydraulic flushing in hole and Deephole pre-splitting blasting
These three methods.These three methods can reduce coal and gas prominent danger to a certain extent, but there is also some shortcomings
Part.Hydraulic fracturing technology can also form new area of stress concentration, the peace to colliery while crack, release coal body is formed
Full production causes new obstacle, and the damage envelope of water under high pressure and direction are uncontrollable, its region protrusion-dispelling effect still needs to be investigated,
It is perfect；Hydraulic flushing in hole and Deephole pre-splitting blasting strengthen release and anti-reflection, part layer-through drilling by increasing coal hole section diameter respectively
Coal hole section charge explosion release and anti-reflection raising gas pre-drainage effect, its process, technique are more complicated in itself, and security reliability needs
Further improve.Therefore, the advantages of comprehensive each technology at present, the present invention will provide a kind of coal seam of " boring quick-fried pumping " quaternity
Anti-burst method.
The content of the invention
Technical problem：The invention aims to overcome it is of the prior art deficiency after, there is provided a kind of coal seam drilling is quick-fried to be taken out
Integrated anti-burst method is noted, is worn by the special lane of gas control arranged in coal road roof or bottom plate to constructing around coal road
Layer drilling, implements the technical measures such as standing, gas pumping and coal-bed flooding using layer-through drilling successively, and increase coal body splits
Gap, gas bearing capacity and gas pressure in coal road region are reduced, increases coal body moisture content, coal road is reduced or even eliminate so as to reach
Tunnel the purpose of outburst hazard.
Technical scheme：The quick-fried pumping integration anti-burst method of coal seam drilling of the present invention, comprises the following steps：
A. a special lane of gas control is arranged in roof or floor strata；
B. constructed a blast hole to coal seam by the special lane of gas control, and multiple extractions of being constructed around blast hole
Hole, drainage holes penetrate coal seam with blast hole, wherein, blast hole has been constructed apart from the heading end of coal road more than 100m, drainage holes
Conventionally network extraction after, for reducing Coal Seam Outburst Hazard and screening coal roadway tunneling or shielding working face to return
Adopt；
C. explosive is delivered to by coal seam by pvc pipe, explosion then is implemented to blast hole according to prior art, will be quick-fried after explosion
Holes networking carries out gas pumping；
D. following three situation then stops gas pumping for the moment：1. gas extraction concentration is observed by pressure gauge
Change, when gas extraction concentration is reduced to below 10%, stop extraction；2. blast hole between the heading end of coal road away from
During from less than 30m, stop extraction；3. blast hole is apart from the distance deficiency coal roadway tunneling 2 weeks of the heading end of coal road, stop extraction
E. constructed a water injection hole along the track sets of holes of blast hole, or around blast hole in the range of 2m parallel to blast hole
One water injection hole of construction, water injection hole penetrate coal seam；
F. use the water filling into water injection hole of high pressure water, installation water meter test and record injected into water injection hole water,
Water pressure and corresponding time, when that can not continue into water injection hole water filling or water injection hole surrounding rock body seeps water, stopping continues to note
Water.
The locus in the special lane of gas control determines according to geological conditions and coal roof lithologic.
Described high pressure water is static pressure water, and its pressure is no more than 10MPa.
Beneficial effect：By adopting the above-described technical solution, the present invention by " administer lane+layer-through drilling " by explosion and coal
Layer water filling is combined, and realizes the standing to coal road region, adds the crack of burst region coal body, enhancing gas pumping effect
Fruit, thus the gas bearing capacity and pressure of burst region can be significantly reduced, the note after crack caused by standing is also in addition
Water is provided convenience；Coal seam moisture content is improved secondly by water filling, strengthens coal body plasticity, while can make in front of getting working face
Region of stress concentration moves forward, and reduces the danger that coal rock dynamic disaster occurs in mining process for coal seam.The coal of this many integration
Lane driving proof prominence method combines the advantages of protrusion-dispelling administering method such as gas pumping, standing, coal-bed flooding, to keeping mine
Safe and efficient production has important practical significance.
Brief description of the drawings
Fig. 1 is the quick-fried pumping integration anti-burst method arrangement schematic diagram of coal seam drilling of the present invention.
In figure：The special lane of 1- gas controls, 2- drainage holes, 3- coal seams, 4- coal roads, 5- water injection holes, 6- blast holes.
Embodiment
The quick-fried pumping integration anti-burst method of coal seam drilling of the present invention, comprises the following steps：
A. the special lane 1 of a gas control is arranged in the top plate of coal seam 3 or floor strata；
B. constructed a blast hole 6 to coal seam 3 by the special lane 1 of gas control, and multiple take out of being constructed around blast hole
Adopt hole 2, drainage holes 2 penetrate coal seam 3 with blast hole 6, wherein, blast hole 6 apart from coal road 4 heading end more than 100m, extraction
Conventionally network extraction after the completion of the construction of hole 2, for reducing Coal Seam Outburst Hazard and screening coal road 4 to tunnel or cover
Protect working face extraction；Drainage holes 2 and blast hole 6 penetrate coal seam, drainage holes 2 and blast hole 6 can be used for shielding coal roadway tunneling or
Person screens working face extraction, and drilling arrangement and its control range need to meet《State Administration of Quality and Technical Supervision makes the 19th
Number》Requirement, i.e., such as when drilling is used to screen coal roadway tunneling, if seam inclination is less than 25 °, drainage holes and blast hole end hole position
Put and be evenly arranged in the range of the upper and lower each 15m of side of coal road；If seam inclination is more than 25 °, drainage holes exist with blast hole borehole bottom location
Help to be evenly arranged in the range of 20m to lower side 10m on coal road；
C. explosive is delivered to by coal seam 3 by pvc pipe, explosion then is implemented to blast hole 6 according to prior art, will after explosion
The networking of blast hole 6 carries out gas pumping；
D. following three situation then stops gas pumping for the moment：1. gas extraction concentration is observed by pressure gauge
Change, when gas extraction concentration is reduced to below 10%, stop extraction；2. blast hole 6 is between the heading end of coal road 4
When distance is less than 30m, stop extraction；3. blast hole 6 apart from the heading end of coal road 4 distance deficiency coal road 4 tunnel 2 weeks when, stop
Only extraction
E. constructed a water injection hole 5 along the track sets of holes of blast hole 6, or around blast hole 6 in the range of 2m parallel to quick-fried
One water injection hole 5 of construction of holes 6, water injection hole 5 penetrate coal seam 3；
F. the water filling into water injection hole 5 of high pressure water is used, the water injected into water injection hole 5 is tested and recorded to installation water meter
Amount, water pressure and corresponding time, when that can not continue that water filling or the surrounding rock body of water injection hole 5 seep water into water injection hole 5, stop after
Continuous water filling.
The locus in the special lane 1 of gas control determines according to geological conditions and coal roof lithologic.
Described high pressure water is static pressure water, and its pressure is no more than 10MPa.
The invention will be further described for embodiment in below in conjunction with the accompanying drawings：
Embodiment one：The quick-fried pumping integration anti-burst method shielding coal roadway tunneling of coal seam drilling
The quick-fried pumping integration anti-burst method of coal seam drilling of the present invention, for coal roadway stripe gas control, screen coal roadway tunneling.
In coal seam 3 during coal driving 4, the special lane 1 of a gas control, gas can be arranged in the place Roof Rock Strata of Coal Seam of coal road 4
The locus in special lane 1 is administered to be determined according to geological conditions and the Roof rock feature of coal seam 3, in general with coal road 4 residing for coal seam 3
Vertical range be 10~30m, the Roof rock feature hardness of coal seam 3 gets the small value when larger and more complete, on the contrary then take large values, and works as top
When slate dead-soft and high degree of crushing, distance can suitably increase.
From the special lane 1 of gas control to the surrounding of coal road 4, construction layer-through drilling, layer-through drilling are divided into drainage holes 2 and blast hole 6
Two kinds, aperture is typically no less than 75mm；Blast hole 6 passes through the center of coal road 4, and drainage holes 2 are in the upper and lower each 15m models of side of coal road 4
It is uniformly distributed in enclosing；By the layer-through drilling that embodiment is constructed in Fig. 1 belongs to downhole, for convenience of deslagging and draining, need extremely
Make less it is all drill into the bottom plate 3m of coal seam 3 residing for coal road 4, and with drilling pressure wind drainage arrangement, now record all drillings
See and coal depth and see coal segment length；Sealing of hole immediately after the completion of drainage holes 2 are constructed, incoming stream scale in parallel, connects and is taken out into gas
Pipeline is adopted, records gas density, flow in now extraction pipeline；According to blast hole 6 see coal segment length when determining explosion it is required
Explosive charge, a roll of explosive is arranged in coal petrography joint portion using pvc pipe, remaining explosive is all arranged in coal seam, according to
Conventional method, ensure it is errorless under conditions of detonate；Needed after explosion by flowmeter Continuous Observation gas drainage pipeline watts
The change of this concentration and flow, when gas extraction concentration is reduced to below 10%, stop extraction, or the actual feelings according to underground
Condition, when distance of the blast hole 6 between the heading end of coal road 4 is less than 30m, stop extraction, or blast hole 6 is apart from coal road 4
Heading end distance deficiency coal road 4 tunnel 2 weeks when, stop extraction；Then in the track sets of holes construction water injection hole along blast hole 6
5 and coal seam is penetrated, sealing of hole, and temporary plugging drainage holes 2 immediately after the pore-forming of water injection hole 5, prevent its leak in water filling；In water filling
Water meter is installed on pipe, 10MPa static pressure water water filling into water injection hole 5 is no more than using down-hole pressure, every 10min records therewith
Corresponding water injection rate, water injection pressure and corresponding time；When hydraulic pressure moves closer to the maximum of underground static pressure water pressure in the injecting process
Value and during injection flow very little, show now continue the water filling into the water injection hole 5, water filling, record note should be stopped in time
The final water injection rate in water hole 5；When the surrounding rock body of water injection hole 5 starts infiltration, it should also stop water filling in time, record water injection hole 5 is most
Whole water injection rate；It should be noted that explosive distance should at least heading end 150m of leading heading 4, coal road 4 enters burst region scope
When gather the coal sample of heading end, chemically examine its moisture content, and contrasted with the moisture content of the coal sample in the non-water filling region in same coal seam, it is comprehensive
The situation of change of coal seam school inspection index, investigates effect of the water filling for elimination Coal Seam Outburst Hazard before and after conjunction analysis water filling.
Due to coal road and the driving in the special lane of gas control, layer-through drilling, sealing of hole, the arrangement of extraction system and installation, take out
It is mature technology to adopt etc., and here is omitted.
Embodiment two：The quick-fried pumping integration anti-burst method shielding coal-face back production of coal seam drilling
The quick-fried pumping integration anti-burst method of coal seam drilling of the present invention, it can be used for administering section coal-bed gas, for covering
Protect the back production of working face of coal seam.Before the back production of coal seam, in roof or the special lane 1 of construction of bottom plates gas control, and according to
Order in embodiment one, which is carried out, bores quick-fried pumping integrated technique.Same section omits, and it, which is distinguished, is the control range presence that drills
Difference, drilling arrangement area requirement meet country《Safety regulations in coal mine》、《Prevent and treat coal and gas prominent regulation》With region method
Rule etc. require.
The locus in the special lane of gas control determines that high pressure water is according to geological conditions and coal roof lithologic
Static pressure water, its pressure are no more than 10MPa.
Claims (3)
1. a kind of quick-fried pumping integration anti-burst method of coal seam drilling, it is characterised in that comprise the following steps：
A, in coal seam（3）A special lane of gas control is arranged in top plate or floor strata（1）；
B, the special lane of gas control is passed through（1）To coal seam（3）One blast hole of construction（6）, and it is multiple to construct around blast hole
Drainage holes（2）, drainage holes（2）With blast hole（6）Penetrate coal seam（3）, wherein, blast hole（6）Apart from coal road（4）Heading end
More than 100m, drainage holes（2）Conventionally network extraction after the completion of construction, for reducing Coal Seam Outburst Hazard and screening
Coal road（4）Driving or shielding working face extraction；
C, explosive is delivered to by coal seam by pvc pipe（3）, then according to prior art to blast hole（6）Implement explosion, will after explosion
Blast hole（6）Networking carries out gas pumping；
D, following three situation then stops gas pumping for the moment：1. the change of gas extraction concentration is observed by pressure gauge,
When gas extraction concentration is reduced to below 10%, stop extraction；2. blast hole（6）Apart from coal road（4）Heading end between away from
During from less than 30m, stop extraction；3. blast hole（6）Apart from coal road（4）Heading end distance deficiency coal road（4）Driving 2 weeks
When, stop extraction；
E, along blast hole（6）Track sets of holes construct a water injection hole（5）, or in blast hole（6）In the range of surrounding 2m parallel to
Blast hole（6）One water injection hole of construction（5）, water injection hole（5）Penetrate coal seam（3）；
F, using high pressure water to water injection hole（5）Interior water filling, installation water meter are tested and recorded to water injection hole（5）The water of interior injection
Amount, water pressure and corresponding time, when can not continue to water injection hole（5）Interior water filling or water injection hole（5）When surrounding rock body seeps water, stop
Only continue water filling.
2. the quick-fried pumping integration anti-burst method of coal seam drilling according to claim 1, it is characterised in that：The gas control is special
Use lane（1）Locus determined according to geological conditions and coal roof lithologic.
3. the quick-fried pumping integration anti-burst method of coal seam drilling according to claim 1, it is characterised in that：Described high pressure water
For static pressure water, its pressure is no more than 10MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711005912.8A CN107816365B (en) | 2017-10-25 | 2017-10-25 | Coal seam drilling, blasting and pumping integrated outburst prevention method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711005912.8A CN107816365B (en) | 2017-10-25 | 2017-10-25 | Coal seam drilling, blasting and pumping integrated outburst prevention method |
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| Publication Number | Publication Date |
|---|---|
| CN107816365A true CN107816365A (en) | 2018-03-20 |
| CN107816365B CN107816365B (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711005912.8A Active CN107816365B (en) | 2017-10-25 | 2017-10-25 | Coal seam drilling, blasting and pumping integrated outburst prevention method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113784A (en) * | 2018-09-20 | 2019-01-01 | 中国矿业大学 | A kind of coal bed gas extraction-water filling coupling device and method |
| CN109209472A (en) * | 2018-07-27 | 2019-01-15 | 中国矿业大学 | The coal seam pressure relief anti-burst method that a kind of punching, explosion, water filling intercouple |
| CN109236352A (en) * | 2018-09-20 | 2019-01-18 | 中国矿业大学 | A kind of region anti-burst method of explosion hydraulic fracturing integration gas displacement |
| CN109268060A (en) * | 2018-09-20 | 2019-01-25 | 中国矿业大学 | One kind is based on the quick-fried note integrated regional anti-burst method of strong and weak strong structure |
| CN112664259A (en) * | 2020-12-23 | 2021-04-16 | 中国矿业大学 | Trinity comprehensive outburst prevention method for high outburst coal seam |
| CN113047899A (en) * | 2021-04-09 | 2021-06-29 | 中国矿业大学 | Deep hole multistage loosening blasting cracking method |
| CN114934765A (en) * | 2022-05-19 | 2022-08-23 | 贵州一和科技有限公司 | Method for enhancing gas extraction efficiency by combining hydraulic joint cutting and loosening blasting of coal roadway |
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| CN107152303A (en) * | 2017-07-05 | 2017-09-12 | 安徽理工大学 | A kind of low ventilative high gas layer is by the method for the shielding efficient unloading pressure by blasting extraction in lane |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209472A (en) * | 2018-07-27 | 2019-01-15 | 中国矿业大学 | The coal seam pressure relief anti-burst method that a kind of punching, explosion, water filling intercouple |
| CN109209472B (en) * | 2018-07-27 | 2020-04-21 | 中国矿业大学 | Punching, blasting and water injection mutual coupling coal seam pressure relief and outburst prevention method |
| CN109113784A (en) * | 2018-09-20 | 2019-01-01 | 中国矿业大学 | A kind of coal bed gas extraction-water filling coupling device and method |
| CN109236352A (en) * | 2018-09-20 | 2019-01-18 | 中国矿业大学 | A kind of region anti-burst method of explosion hydraulic fracturing integration gas displacement |
| CN109268060A (en) * | 2018-09-20 | 2019-01-25 | 中国矿业大学 | One kind is based on the quick-fried note integrated regional anti-burst method of strong and weak strong structure |
| CN109268060B (en) * | 2018-09-20 | 2020-06-16 | 中国矿业大学 | Explosion-injection integrated region outburst prevention method based on strong and weak structure |
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| CN112664259A (en) * | 2020-12-23 | 2021-04-16 | 中国矿业大学 | Trinity comprehensive outburst prevention method for high outburst coal seam |
| CN113047899A (en) * | 2021-04-09 | 2021-06-29 | 中国矿业大学 | Deep hole multistage loosening blasting cracking method |
| CN113047899B (en) * | 2021-04-09 | 2022-02-01 | 中国矿业大学 | Deep hole multistage loosening blasting cracking method |
| CN114934765A (en) * | 2022-05-19 | 2022-08-23 | 贵州一和科技有限公司 | Method for enhancing gas extraction efficiency by combining hydraulic joint cutting and loosening blasting of coal roadway |
| CN114934765B (en) * | 2022-05-19 | 2022-12-06 | 贵州一和科技有限公司 | Method for enhancing gas extraction efficiency by combining hydraulic joint cutting and loosening blasting of coal roadway |
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| CN107816365B (en) | 2020-02-07 |
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