CN108331610A - Method for enhancing permeability of soft coal body containing gas under combined action of shock wave and acidification - Google Patents
Method for enhancing permeability of soft coal body containing gas under combined action of shock wave and acidification Download PDFInfo
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- CN108331610A CN108331610A CN201810111817.4A CN201810111817A CN108331610A CN 108331610 A CN108331610 A CN 108331610A CN 201810111817 A CN201810111817 A CN 201810111817A CN 108331610 A CN108331610 A CN 108331610A
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- 239000003245 coal Substances 0.000 title claims abstract description 72
- 230000035939 shock Effects 0.000 title claims abstract description 56
- 230000020477 pH reduction Effects 0.000 title claims abstract description 31
- 230000035699 permeability Effects 0.000 title abstract description 10
- 238000000034 method Methods 0.000 title abstract description 6
- 230000009471 action Effects 0.000 title abstract description 3
- 230000002708 enhancing effect Effects 0.000 title abstract 2
- 238000005728 strengthening Methods 0.000 claims abstract description 15
- 239000002253 acid Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000005553 drilling Methods 0.000 claims description 48
- 238000001028 reflection method Methods 0.000 claims description 16
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000000605 extraction Methods 0.000 abstract description 4
- 238000005065 mining Methods 0.000 description 9
- 238000005086 pumping Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- 230000003667 anti-reflective effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910021532 Calcite Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003911 water pollution Methods 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- 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
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)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a method for enhancing the permeability of soft coal containing gas by the combined action of shock wave and acidification, which comprises the following steps: (1) arranging a plurality of drill holes in the working face crossheading; (2) conveying the shock wave generating device to the bottom of the drill hole by using a drill rod, sealing the hole opening, and filling water into the drill hole; (3) selecting a shock wave strengthening area in the drill hole, and moving the shock wave generating device to enable the shock wave generating device to be gradually opened and acted in each shock wave strengthening area from the deep part to the shallow part of the drill hole; (4) taking out the drill rod and the shock wave generating device, and opening the hole to discharge water in the drill hole; (5) injecting an acid solution into the drill hole, sealing the hole opening again, and carrying out sealing acidification; (6) opening the hole to discharge the acid solution in the drill hole; (7) repeating steps (2) - (6) for the next borehole. The method can realize the anti-reflection of the coal body containing the gas on the basis of reducing the disturbance of the coal bed and protecting the environment, and improve the gas extraction rate.
Description
Technical field
The present invention relates to gas pumping field in process of coal mining, more particularly to a kind of shock wave and acidification synergy
Strengthen anti-reflection method containing the soft coal body of gas.
Background technology
Coal in China consumption accounts for 60% or more primary energy consumption amount, and within a very long time from now on, coal exists
Leading position in China's primary energy consumption will not change.As maximum coal production state in the world, China faces simultaneously
The situation that safe coal production form is severe, fatality rate per million tons are high compared to developed country.The coal mining in China 92% is
Underground job, ocurrence of coal seam complex geologic conditions, coal mining disaster is serious, as mining depth is with about 10~20m's every year
Speed extends to deep, and Coal Mine Disasters are further serious, and especially Gas Disaster, which has become, restricts China's coal-mine safety in production and coal
The key factor of charcoal Industrial Health development.
Gas pumping is to administer the key technology of Gas Disaster, and it is to restrict gas pumping that coal seam permeability is low.Many richnesses
Coal seam containing coal bed gas belongs to low air permeability coal seam, and coal seam permeability generally between (0.1~0.001) × 10-3 μm 2, is made
It is not high at coal bed gas well production efficiency.Gas permeability of coal seam directly decides the complexity that coal bed gas flows in reservoir.Wherein,
The Chinese universal poor permeability in coal seam causes mining conditions to more they tend to complexity with the gradually increasing of coal mining depth, occurs
High-ground stress, high methane, high anisotropism, hypotonicity, low intensive coal body feature, the initial fissure and porosity of coal body by
Gradual change is small, and the permeability in coal seam further decreases.
The mode for improving coal seam permeability at present mainly has hydraulic fracturing, hydraulic slotted liner technique, deep hole explosion to be split etc., deep hole control
Presplit blasting processed is easily that the exploitation in coal seam leaves security risk, and antireflective effect quality differs；Hydraulic fracturing and hydraulic slotted liner technique mesh
Preceding application is wider, and waterpower is anti-reflection, and measure easily induces a series of secondary disasters, and fracturing fluid easily causes water pollution.Therefore, it just needs
Want a kind of and being directed to the antireflective new tool of coal seam with gas, can be realized on the basis of reducing coal seam disturbance, environmental protection containing watt
Anti-reflection, the raising gas pumping rate of this coal body.
Invention content
In view of this, the purpose of the present invention is to provide the soft coal bodies containing gas of a kind of shock wave and acidification synergy
Strengthen anti-reflection method, can realize the anti-reflection of coal seam with gas on the basis of reducing coal seam disturbance, environmental protection, improve gas
Extraction rate.
The shock wave of the present invention strengthens anti-reflection method, including following step with acidification synergy soft coal body containing gas
Suddenly：
(1) if arranging dry hole in return airway；
(2) it is transported to foot of hole by wave generation device is impacted using drilling rod, then seal orifice, then is filled into drilling
Water；
(3) the shock wave strengthening region in drilling, mobile impact wave generation device are selected so that impact wave generation device by
It gradually opens and acts in each shock wave strengthening region to superficial part in drilling deep；
(4) drilling rod and impact wave generation device are taken out, the water in the discharge drilling of aperture is opened；
(5) it is again sealed off aperture after injecting acid solution into drilling, is sealed acidification；
(6) acid solution in the discharge drilling of aperture is opened；
(7) step (2)-(6) are repeated to next drilling.
Further, in step (3), in each shock wave strengthening region, shock wave enhanced time is 0.8-1.2h.
Further, in step (3), the distance of adjacent shock wave strengthening region is 9-11m.
Further, in step (5), the acid solution is hydrochloric acid, sulfuric acid, hydrofluoric acid, one kind in acetic acid or two
Kind or more mixture.
Further, in step (5), the time of acidification is sealed no less than for 24 hours.
Further, in step (1), the aperture of the drilling is 108mm, depth 50m, is at a distance from bottom plate
The distance of 1.5m, adjacent drilling are 2m.
Further, it in step (1), drills as along coal seam lateral aperture.
The shock wave of the present invention strengthens anti-reflection method with acidification synergy soft coal body containing gas, has beneficial below
Effect：
First, without apparent macroscopical crack, the generation of collapse hole accident is reduced, shock wave combines anti-reflection technology not break with acidification
Premised on bad coal bed texture, cutting property, extensional stress fracturing coal seam are first passed through, it is rear strong using acidification with high-strength acoustic wave excitation coal seam
Change it is anti-reflection, can environmental protection can realize that coal seam is anti-reflection again；
Second, the micron order cracks of shock wave and a large amount of communication nanoscale holes of the anti-reflection generation of acidification synergy can
In a distributed manner, timesharing, the comprehensive anti-reflection coal seam of continuity pattern；
Third, control shock wave generate the work times of equipment, can carry out repeated action to finite region, adjust drilling
The effect to entire reservoir is realized in position, the control of acidificatoin time.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is blast wave generating apparatus operating diagram in the embodiment of the present invention two；
Fig. 2 is tri- different zones borehole patterns of crossheading A, B, C on 1296 working faces in the embodiment of the present invention two, wherein
The areas A are without anti-reflection measure region, and B area is the anti-reflection region of shock wave, and the areas C are shock wave and acidification synergy region；
Fig. 3 is bore inner blast wave generating apparatus operating location figure in the embodiment of the present invention two；
Fig. 4 is tri- different zones gas pumping effect figures of A, B, C in the embodiment of the present invention two；
In figure, the tunnels 1-, 2- drillings, 3- drilling rods, the coal seams 4-, 5- impact wave generation devices, 6- shock waves strengthening region.
Specific implementation mode
Embodiment one：Shock wave strengthens anti-reflection method with acidification synergy soft coal body containing gas
The shock wave of the present embodiment strengthens anti-reflection method, including following step with acidification synergy soft coal body containing gas
Suddenly：
(1) it if arranging dry hole in return airway, drills as along coal seam lateral aperture；The aperture of the drilling is
108mm, depth 50m, at a distance from bottom plate it is 1.5m, the distance of adjacent drilling is 2m；
(2) it is transported to foot of hole by wave generation device is impacted using drilling rod, then seal orifice, then is filled into drilling
Water；
(3) the shock wave strengthening region in drilling is selected, impact wave generation device is moved by control stick so that shock wave
Generation device is gradually opened and is acted in each shock wave strengthening region to superficial part from drilling deep；In each shock wave stiffened region
Domain, shock wave enhanced time can be 0.8-1.2h；The distance of adjacent shock wave strengthening region can be 9-11m；
(4) drilling rod and impact wave generation device are taken out, the water in the discharge drilling of aperture is opened；
(5) it is again sealed off aperture after injecting acid solution into drilling, is sealed acidification；The acid solution can be salt
One or more kinds of mixtures in acid, sulfuric acid, hydrofluoric acid, acetic acid；The time of sealing acidification is no less than for 24 hours；
(6) acid solution in the discharge drilling of aperture is opened；
(7) step (2)-(6) are repeated to next drilling, it is anti-reflection waits for that all drilled hole is completed after the completion.
Embodiment two：Shock wave strengthens example and the evaluation of anti-reflection method with the soft coal body containing gas of acidification synergy
Certain 1296 fully-mechanized mining working of mine is located at 9 coal seam, 2 exploiting field, and working face strike length is 642m, and tilt length is
171m.Coal seam thickness is 2.5m, 25~35 ° of bearing, 8 ° of coal seam mean obliquity, can adopt index 1, and ocurrence of coal seam is stablized；Always
Top is Dark grey siltstone, and thick 2.7m, directly top are aterrimus mud stone, thick 2.2m；Direct bottom is taupe gray packsand, thick
2.5m, past are packsand, thick 4.6m.Coal-dust explosion property coefficient is 38.72%.Spontaneous combustion period is long；Coal body unit weight is 1.4t/
m3；Working face extraction rate is 95%；Working face mining height is 2.2m, day promotes 4.8m.
Layer gas bearing capacity 9m3/ t, coal-bed gas pressure 0.73MPa, face gas relative amount of mine gas emission 11.4m3/ t, coal seam
Permeability coefficient 0.018m2/MPa2.d, drilling gas flux depression coefficient 0.004d-1, belong to typical hard-pumped mining coal seam.
To the anti-reflection of the coal seam and evaluation, it may include following steps：
(1) parameters such as monitoring monitoring coal seam gas-bearing capacity, gas pressure, gas emission, find coal seam gas-bearing capacity
9m3/ t, coal-bed gas pressure 0.73MPa, face gas relative amount of mine gas emission 11.4m3/ t can be used shock wave and combine with acidification
The anti-reflection mode of effect.
(2) the fundamental mechanics parameter of crossheading on 1296 working faces is measured, measurement result is that uniaxial compressive strength is 12MPa,
Elasticity modulus is 3000MPa, Poisson's ratio 0.3.
(3) sampling is carried out to 1296 working faces and carries out mineralogical composition analysis, it is found that mineralogical composition and content are as follows：Calcite
11%, dolomite 3%, kaolin 8%, quartz 4%, noncrystalline 74%.
(4) choosing has targetedly acid solution classification and mass fraction, determines shock wave and acidification Joint Implementation scheme；Needle
To composition of the 1296 working face coal seam mineralogical compositions based on carbonate, supplemented by alumino-silicate, selection is sour based on hydrochloric acid,
Hydrofluoric acid is auxiliary acid, adds a small amount of expansion-resisting agent ammonium chloride；Wherein, hydrochloric acid mass fraction is 12%, hydrofluoric acid 2%, addition 2%
Expansion-resisting agent ammonium chloride.
(4) it is 20m to choose almost the same 3 of the parameters such as coal quality, gas bearing capacity in the middle part of crossheading respectively on 1296 working faces
Long A, B, C construction area, a-quadrant are represented as archioporus without anti-reflection measure region, and B area represents the anti-reflection region of shock wave, the areas C
Domain represents shock wave and acidification synergy region (such as Fig. 2).
(5) it is all made of same pattern in 3 construction areas of A, B, C, using along coal seam lateral aperture, aperture is
108mm, drilling depth 50m, spacing of wells 2m, drilling are away from bottom plate 1.5m, A, B, 3 construction area drilling numbers of C
3 (such as Fig. 2).
(6) drilling being set as in the region B, C is transported to foot of hole using drilling rod by wave generation device is impacted, and then seals
Aperture, the injected clear water into hole.
(7) opening impact wave generation device, and impact wave generation device is moved by control stick, one is set as at 10m
Shock wave strengthening region, shock wave enhanced time can be 1h, can be to next drilling after the completion of each drilling everywhere operating location
Carry out shock wave and strengthens (such as Fig. 3).
(8) after the reinforcing of the regions C shock wave, drilling rod and impact wave generation device are taken out, opens aperture to be discharged in drilling
Water, the mixed liquor of hydrochloric acid and hydrofluoric acid is then noted into drilling, sealing, Sealing period is not less than for 24 hours.
(9) it is drained after sealing 28h, installation flowmeter, gas density meter are connected into methane gas extraction pipeline.
(10) carry out shock wave and the evaluation for being acidified synergy soft coal body anti-reflection method containing gas；Evaluation result is such as
Shown in Fig. 4, as seen from the figure, by shock wave be acidified combined reinforced anti-reflection effect (c) after, single hole gas pumping scale ratio without
Anti-reflection measure (a) and pure shock wave anti-reflection (b) greatly improve, that is, improve and improve gas pumping rate.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to compared with
Good embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the right of invention.
Claims (7)
1. a kind of shock wave strengthens anti-reflection method with acidification synergy containing the soft coal body of gas, which is characterized in that including with
Lower step：
(1) if arranging dry hole in return airway；
(2) it is transported to foot of hole by wave generation device is impacted using drilling rod, then seal orifice, then fills water into drilling；
(3) the shock wave strengthening region in drilling, mobile impact wave generation device so that impact wave generation device is by drilling are selected
It gradually opens and acts in each shock wave strengthening region to superficial part in deep；
(4) drilling rod and impact wave generation device are taken out, the water in the discharge drilling of aperture is opened；
(5) it is again sealed off aperture after injecting acid solution into drilling, is sealed acidification；
(6) acid solution in the discharge drilling of aperture is opened；
(7) step (2)-(6) are repeated to next drilling.
2. shock wave according to claim 1 strengthens anti-reflection method with acidification synergy soft coal body containing gas,
It is characterized in that：In step (3), in each shock wave strengthening region, shock wave enhanced time is 0.8-1.2h.
3. shock wave according to claim 2 strengthens anti-reflection method with acidification synergy soft coal body containing gas,
It is characterized in that：In step (3), the distance of adjacent shock wave strengthening region is 9-11m.
4. shock wave according to claim 2 strengthens anti-reflection method with acidification synergy soft coal body containing gas,
It is characterized in that：In step (5), the acid solution be hydrochloric acid, sulfuric acid, hydrofluoric acid, it is more than one or two kinds of in acetic acid
Mixture.
5. shock wave according to claim 4 strengthens anti-reflection method with acidification synergy soft coal body containing gas,
It is characterized in that：In step (5), the time of acidification is sealed no less than for 24 hours.
6. shock wave according to claim 3 strengthens anti-reflection method with acidification synergy soft coal body containing gas,
It is characterized in that：In step (1), the aperture of the drilling is 108mm, depth 50m, at a distance from bottom plate is 1.5m, adjacent
The distance of drilling is 2m.
7. shock wave according to claim 1 strengthens anti-reflection method with acidification synergy soft coal body containing gas,
It is characterized in that：In step (1), the drilling is along coal seam lateral aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810111817.4A CN108331610A (en) | 2018-02-05 | 2018-02-05 | Method for enhancing permeability of soft coal body containing gas under combined action of shock wave and acidification |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810111817.4A CN108331610A (en) | 2018-02-05 | 2018-02-05 | Method for enhancing permeability of soft coal body containing gas under combined action of shock wave and acidification |
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Cited By (8)
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| CN109323972A (en) * | 2018-12-18 | 2019-02-12 | 重庆大学 | A kind of experimental provision of the controllable shock wave fracturing coal seam with gas of multi- scenarios method |
| CN109578060A (en) * | 2019-02-01 | 2019-04-05 | 西安闪光能源科技有限公司 | Coal bed gas extraction method based on controllable shock wave technology |
| CN110107263A (en) * | 2019-06-20 | 2019-08-09 | 中联煤层气有限责任公司 | A kind of method of deformed coal exploiting coal bed methane |
| CN111691864A (en) * | 2020-06-18 | 2020-09-22 | 陕西煤业化工技术研究院有限责任公司 | Underground coal mine ultrasonic excitation assisted hydraulic fracturing pressure relief and permeability increasing method |
| CN112284965A (en) * | 2020-10-16 | 2021-01-29 | 中煤科工集团重庆研究院有限公司 | Coal roadway driving face drilling flow simulation experiment device and method |
| CN112727403A (en) * | 2021-01-06 | 2021-04-30 | 湖南科技大学 | Soft coal gas extraction drilling and injection inhibiting method with cooperation of bottom plate slot and acid invasion |
| CN114352277A (en) * | 2022-01-18 | 2022-04-15 | 辽宁工程技术大学 | Coal mine composite power disaster prevention and control method based on controllable shock waves |
| CN114483160A (en) * | 2021-12-28 | 2022-05-13 | 西安交通大学 | Gas extraction method for connecting roadway |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323972A (en) * | 2018-12-18 | 2019-02-12 | 重庆大学 | A kind of experimental provision of the controllable shock wave fracturing coal seam with gas of multi- scenarios method |
| CN109578060A (en) * | 2019-02-01 | 2019-04-05 | 西安闪光能源科技有限公司 | Coal bed gas extraction method based on controllable shock wave technology |
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| CN110107263A (en) * | 2019-06-20 | 2019-08-09 | 中联煤层气有限责任公司 | A kind of method of deformed coal exploiting coal bed methane |
| CN111691864A (en) * | 2020-06-18 | 2020-09-22 | 陕西煤业化工技术研究院有限责任公司 | Underground coal mine ultrasonic excitation assisted hydraulic fracturing pressure relief and permeability increasing method |
| CN112284965A (en) * | 2020-10-16 | 2021-01-29 | 中煤科工集团重庆研究院有限公司 | Coal roadway driving face drilling flow simulation experiment device and method |
| CN112284965B (en) * | 2020-10-16 | 2022-09-23 | 中煤科工集团重庆研究院有限公司 | Coal roadway driving face drilling flow simulation experiment device and method |
| CN112727403A (en) * | 2021-01-06 | 2021-04-30 | 湖南科技大学 | Soft coal gas extraction drilling and injection inhibiting method with cooperation of bottom plate slot and acid invasion |
| CN112727403B (en) * | 2021-01-06 | 2022-06-14 | 湖南科技大学 | Soft coal gas extraction drilling and injection inhibiting method with cooperation of bottom plate slot and acid invasion |
| CN114483160A (en) * | 2021-12-28 | 2022-05-13 | 西安交通大学 | Gas extraction method for connecting roadway |
| CN114352277A (en) * | 2022-01-18 | 2022-04-15 | 辽宁工程技术大学 | Coal mine composite power disaster prevention and control method based on controllable shock waves |
| CN114352277B (en) * | 2022-01-18 | 2024-02-13 | 辽宁工程技术大学 | Coal mine composite dynamic disaster prevention and control method based on controllable shock waves |
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