CN108412453A - A kind of coal mining water controls system and construction method altogether with gas - Google Patents
A kind of coal mining water controls system and construction method altogether with gas Download PDFInfo
- Publication number
- CN108412453A CN108412453A CN201810382814.4A CN201810382814A CN108412453A CN 108412453 A CN108412453 A CN 108412453A CN 201810382814 A CN201810382814 A CN 201810382814A CN 108412453 A CN108412453 A CN 108412453A
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- 239000003245 coal Substances 0.000 title claims abstract description 120
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000005065 mining Methods 0.000 title claims abstract description 73
- 238000010276 construction Methods 0.000 title claims abstract description 43
- 238000000605 extraction Methods 0.000 claims abstract description 61
- 238000005553 drilling Methods 0.000 claims abstract description 58
- 239000011435 rock Substances 0.000 claims abstract description 16
- 238000005086 pumping Methods 0.000 claims description 23
- 230000000903 blocking effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 230000008033 biological extinction Effects 0.000 claims description 4
- 230000035699 permeability Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims 1
- 238000009738 saturating Methods 0.000 claims 1
- 230000002265 prevention Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/046—Directional drilling horizontal drilling
-
- 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
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)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A kind of coal mining water of present invention offer controls system altogether with gas, the vertical drilling of water-bearing layer construction closed on from ground to first mining coal seam including an at least hole, and the horizontal grouting water blockoff in water-bearing layer being connected to vertical drilling drills, the horizontal grouting water blockoff drilling is at least a hole；And the first level extraction borehole in first mining coal seam being connected to vertical drilling；And the second horizontal extraction borehole in first mining coal seam overlying rock being connected to vertical drilling.The advantage of the invention is that：It is comprehensive to complete control of coalmine gas and water hazard prediction work by vertical ground drilling construction horizontal drilling, compared to construction gas control drilling respectively and underwater prevention drilling, more efficient, economy higher.
Description
Technical field
The present invention relates to exploitation of mineral resources field, more specifically a kind of coal mining water and gas control altogether system and
Construction method.
Background technology
During underground coal resource exploitation, it can usually be threatened by underground water and gas.Before coal mining, adopt more
It carries out underground water closure and gas pumping work respectively with the method for drilling, drills generally by constructing in ground or underworkings.
It is vertically drilled using ground and carries out water blockoff and gas pumping safety is good, but borehole engineering amount is big, and construction cost is high.And from underground
Roadway construction drills, and borehole engineering amount is small, but easily causes spray orifice accident, and underground water or gas is caused to pour in tunnel, in some instances it may even be possible to
Coal and gas prominent accident is induced, causes casualties and economic loss, danger is higher.In addition, current mash gas pumping drilling
Larger by influence on groundwater, underground water, which pours in mash gas pumping drilling, can reduce the effective air-flow section of extraction borehole, and it is negative to increase extraction
Crushing consumes, and reduces or fails so as to cause mash gas pumping drilling working efficiency.Therefore, existing coal mine underground water and gas control
The control that technology is difficult to safety, economically and efficiently completes water and gas in coal mining.
Invention content
Under the conditions of water and Gas Disaster, the dangerous height of coal mining, quantities are big
With construction cost height, a kind of coal mining water is provided and controls system and construction method altogether with gas.
The present invention solves above-mentioned technical problem by the following technical programs：
A kind of coal mining water controls system altogether with gas, including the water-bearing layer that at least a hole is closed on from ground to first mining coal seam
The vertical drilling of construction, and the horizontal grouting water blockoff in water-bearing layer being connected to vertical drilling drill, the horizontal grouting
Water blockoff drilling is at least a hole；
And the first level extraction borehole in first mining coal seam being connected to vertical drilling；
And the second horizontal extraction borehole in first mining coal seam overlying rock being connected to vertical drilling.
Preferably, further include：The overlying rock in the coal seam and the coal seam that are opened in successively above first mining coal seam respectively with
The horizontal extraction borehole of third and the 4th horizontal extraction borehole of vertical drilling connection.
Preferably, further include the vertical extraction borehole of auxiliary；The vertical extraction borehole bottom end of auxiliary is in coal seam.
A kind of coal mining water controls the construction method of system with gas altogether：Include the following steps：
Grouting for water blocking construction procedure：The vertical drilling of water-bearing layer construction closed on from ground to first mining coal seam, then by fixed
To the horizontal grouting for water blocking drilling in water-bearing layer of constructing is drilled in water-bearing layer, water blockoff material is injected into the horizontal grouting for water blocking drilling in water-bearing layer
Expect, the underground water in plugging water-bearing stratum；
Mash gas pumping drilling construction step：From vertically drilling to first mining coal seam construction first level extraction borehole, by vertical
It drills to first mining coal seam overlying rock the second horizontal extraction borehole of construction；
First mining coal seam gas pre-drainage adopts extinction construction procedure：By the horizontal extraction borehole of first mining coal seam to first mining coal seam preservation
Gas carries out pre- extraction, eliminates the protrusion hidden danger of first mining coal seam；
First mining coal seam gas pumping and its top pre- extraction construction procedure of coal-bed gas：While exploitation first mining coal seam,
By the gas being precipitated in the be arranged in first mining coal seam overlying rock second horizontal extraction borehole extraction head mining coal seam recovery process,
The gas that its top coal seam caused by pressure release pours in first mining coal seam overlying rock is exploited in extraction simultaneously due to first mining coal seam, i.e., to upper
Square coal seam carries out pre- extraction.
Preferably, it according to the second horizontal extraction borehole to the extracting result in top coal seam, may be selected to apply in coal seam above
The horizontal extraction borehole of work third or the 4th horizontal extraction borehole of top Strata Overlying The Seam carry out further gas pumping work.
Preferably, as gas permeability of coal seam is poor, can drill injection high pressure water to drainage from coal seam, and hydrofracturing is carried out to coal seam
After increasing gas permeability, then carries out gas pre-drainage and adopt work.
The advantage of the invention is that：
1. comprehensive to complete control of coalmine gas and water hazard prediction work, phase by vertical ground drilling construction horizontal drilling
Than gas control drilling and the underwater prevention drilling of constructing respectively, more efficient, economy higher；
2. being controlled altogether with gas by water, safety guarantee and execution conditions are provided for coal and gas power phenomenon work；
3., it can be achieved that the gas pre-drainage of adjacent coal bed is adopted while carrying out coal mining to a coal seam, eliminate adjacent
The protrusion hidden danger in coal seam, to realize gas control to whole coal seams successively, coal is more efficient with gas production, and economy is more
It is good；
4. by blocking underground water, influence of the underground water to mash gas pumping drilling is eliminated, improves gas pumping work
Efficiency；
5. being worked by gas pumping, pressure release is carried out to coal seam, the gas pressure in coal seam is reduced, to reduce ground
Stressor layer eliminates the hidden danger of underground water intrusion coal mine underground working region in conjunction with grouting for water blocking measure；
6. by drilling from the drilling of ground construction gas control and water hazard prediction, ground construction place floor space is small, applies
It arranges conveniently, flexibly to workshop, ground neighboring buildings and environment is influenced smaller with equipment；
7. the present invention has wide applicability.
Description of the drawings
Fig. 1 is the cross-sectional view of the present invention.
Specific implementation mode
The effect of to make to structure feature of the invention and being reached, has a better understanding and awareness, to preferable
Embodiment and attached drawing cooperation detailed description, are described as follows：
As shown in Figure 1, a kind of coal mining water controls system, including an at least hole from ground 1 to first mining coal seam 5 altogether with gas
The water-bearing layer 3 closed on is constructed vertical drilling 2, and the horizontal grouting water blockoff brills in water-bearing layer 3 be connected to vertical drilling 2
Hole 4, the horizontal grouting water blockoff drilling 4 are at least a hole；And first in first mining coal seam 5 being connected to vertical drilling 2
Horizontal extraction borehole 6；And the second horizontal extraction borehole 7 in 5 overlying rock of first mining coal seam being connected to vertical drilling 2.
In order to ensure safety, it can open up and erect respectively in the overlying rock in the top coal seam 8 of first mining coal seam 5 and the coal seam
To horizontal 9 and the 4th horizontal extraction borehole 10 of extraction borehole of third of 2 connection of drilling.
And also vertical extraction borehole 11 can be assisted to ensure extracting result by opening up；The vertical extraction of auxiliary is bored
11 bottom end of hole is in coal seam.
A kind of coal mining water controls the construction method of system with gas altogether：Include the following steps：
Grouting for water blocking construction procedure：The water-bearing layer 3 closed on from ground 1 to first mining coal seam 5 is constructed vertical drilling 2, is then led to
It crosses Directional Drilling to construct in water-bearing layer 3 water-bearing layer horizontal grouting for water blocking drilling 4, be noted into the horizontal grouting for water blocking drilling in water-bearing layer 4
Enter water shutoff material, the underground water in plugging water-bearing stratum；
Mash gas pumping drilling construction step：From vertically drilling 2 to the construction first level of first mining coal seam 5 extraction borehole 6, by erecting
To drilling 2 to 5 overlying rock of first mining coal seam construct the second horizontal extraction borehole 7；
5 gas pre-drainage of first mining coal seam adopts extinction construction procedure：First mining coal seam 5 is assigned by 5 horizontal extraction borehole 6 of first mining coal seam
The gas deposited carries out pre- extraction, eliminates the protrusion hidden danger of first mining coal seam 5；
5 gas pumping of first mining coal seam and its top pre- extraction construction procedure of coal-bed gas：In the same of exploitation head mining coal seams 5
When, by being precipitated in 7 extraction head mining coal seams of the second horizontal extraction borehole, 5 recovery process that is arranged in 5 overlying rock of first mining coal seam
Gas, while extraction exploits its top coal seam caused by pressure release due to first mining coal seam 5 and pours in watt of 5 overlying rock of first mining coal seam
This, i.e., carry out pre- extraction to top coal seam.
According to the second horizontal extraction borehole 7 to the extracting result in top coal seam, third of constructing in coal seam 8 above may be selected
Horizontal extraction borehole 9 or the 4th horizontal extraction borehole 10 of top Strata Overlying The Seam carry out further gas pumping work.
If gas permeability of coal seam is poor, can drill injection high pressure water to drainage from coal seam, carry out hydrofracturing to coal seam and increase thoroughly
After gas, then carries out gas pre-drainage and adopt work.
Water blockoff and gas pumping region area size can be determined as needed, may be selected a vertical drilling and and its
Several horizontal extraction boreholes of unicom individually complete water blockoff and gas pumping work, or by it is multiple it is vertical drilling and with its unicom
Several horizontal drillings cooperation complete water blockoff and gas pumping work；
According to the gas pumping effect of horizontal drilling, may be selected from the vertical extraction borehole 11 of ground construction auxiliary to coal seam,
Draining coal seam gas further increases coal seam extinction and gas pumping effect；
The sequence of construction of grouting for water blocking and coal and gas power phenomenon can be according to the formation condition flexible arrangement of construction site, complete
After working at water blockoff, can gas pumping work be carried out to each coal seam successively.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection domain by appended claims and its
Equivalent defines.
Claims (6)
1. a kind of coal mining water controls system altogether with gas, it is characterised in that：Including an at least hole from ground (1) to first mining coal seam
(5) the vertical drilling (2) of water-bearing layer (3) construction closed on, and be in water-bearing layer (3) with what vertical drilling (2) was connected to
Horizontal grouting water blockoff drills (4), and the horizontal grouting water blockoff drilling (4) is at least a hole；
And the first level extraction borehole (6) in first mining coal seam (5) being connected to vertical drilling (2)；
And the second horizontal extraction borehole (7) in first mining coal seam (5) overlying rock being connected to vertical drilling (2).
2. a kind of coal mining water according to claim 1 controls system altogether with gas, it is characterised in that：Further include：Successively
It is opened in the third water that the overlying rock in the coal seam and the coal seam above first mining coal seam (5) is connected to vertical drilling (2) respectively
Flat extraction borehole (9) and the 4th horizontal extraction borehole (10).
3. a kind of coal mining water according to claim 1 or 2 controls system altogether with gas, it is characterised in that：Further include auxiliary
Help vertical extraction borehole (11)；Vertical extraction borehole (11) bottom end of auxiliary is in coal seam.
4. a kind of coal mining water controls construction method altogether with gas, it is characterised in that：It is any applied to the claims 1 to 3
Described controls system altogether, it is characterised in that：Include the following steps：
Grouting for water blocking construction procedure：The vertical drilling (2) of water-bearing layer (3) construction closed on from ground (1) to first mining coal seam (5), so
By Directional Drilling, the horizontal grouting for water blocking in construction water-bearing layer drills (4) in water-bearing layer (3) afterwards, is bored to the horizontal grouting for water blocking in water-bearing layer
Water shutoff material, the underground water in plugging water-bearing stratum are injected in hole (4)；
Mash gas pumping drilling construction step：From vertically drill (2) to first mining coal seam (5) construction first level extraction borehole (6), by
Vertical drilling (2) is constructed the second horizontal extraction borehole (7) to first mining coal seam (5) overlying rock；
First mining coal seam (5) gas pre-drainage adopts extinction construction procedure：By the horizontal extraction borehole of first mining coal seam (5) 6 to first mining coal seam (5)
The gas of preservation carries out pre- extraction, eliminates the protrusion hidden danger of first mining coal seam (5)；
First mining coal seam (5) gas pumping and its top pre- extraction construction procedure of coal-bed gas：In the same of the first mining coal seam (5) of exploitation
When, by the be arranged in first mining coal seam (5) overlying rock second horizontal extraction borehole (7) extraction head mining coal seams (5) recovery process
The gas of middle precipitation, while extraction is since coal seam pours on first mining coal seam (5) above it caused by first mining coal seam (5) exploitation pressure release
The gas of rock stratum carries out pre- extraction to top coal seam.
5. a kind of coal mining water according to claim 4 controls construction method altogether with gas, it is characterised in that：According to second
The construction horizontal extraction borehole of third (9) in coal seam above may be selected to the extracting result in top coal seam in horizontal extraction borehole (7)
Or Strata Overlying The Seam the 4th horizontal extraction borehole (10) in top carries out further gas pumping work.
6. a kind of coal mining water according to claim 4 controls construction method altogether with gas, it is characterised in that：As coal seam is saturating
Gas is poor, drills injection high pressure water using to drainage from coal seam, is carried out after hydrofracturing increases gas permeability to coal seam, then carry out watt
This pre- extraction work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810382814.4A CN108412453A (en) | 2018-04-24 | 2018-04-24 | A kind of coal mining water controls system and construction method altogether with gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810382814.4A CN108412453A (en) | 2018-04-24 | 2018-04-24 | A kind of coal mining water controls system and construction method altogether with gas |
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| CN108412453A true CN108412453A (en) | 2018-08-17 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109898992A (en) * | 2019-03-14 | 2019-06-18 | 安徽建筑大学 | It is a kind of that disaster-ridden source ore bed safe working method is administered using surface orientation drilling in advance |
| CN111075502A (en) * | 2020-02-18 | 2020-04-28 | 太原理工大学 | Method for preventing coal mine water and gas spray holes |
| CN111894671A (en) * | 2020-08-14 | 2020-11-06 | 山东科技大学 | Ground water pumping hole pumping and draining method aiming at working face top plate separation layer water damage |
| CN112012785A (en) * | 2020-09-11 | 2020-12-01 | 中国矿业大学 | Method for extracting pressure-relief gas by utilizing L-shaped drilling in overburden rock isolation grouting filling process |
| CN112360345A (en) * | 2020-10-27 | 2021-02-12 | 山东科技大学 | Method and system for reinforcing grouting of gas extraction hole under extremely soft coal seam and application |
| CN112879077A (en) * | 2021-01-13 | 2021-06-01 | 中煤科工开采研究院有限公司 | Coal and coalbed methane continuous development method based on ground directional horizontal hole |
| CN113107583A (en) * | 2021-05-21 | 2021-07-13 | 中国矿业大学 | Thick and hard roof high-gas coal seam gas extraction system and extraction method |
| CN113123720A (en) * | 2021-03-22 | 2021-07-16 | 中国煤炭地质总局水文地质局 | Construction process for treating grouting holes and simultaneously using grouting holes as gas extraction holes in water damage area of coal seam floor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109898992A (en) * | 2019-03-14 | 2019-06-18 | 安徽建筑大学 | It is a kind of that disaster-ridden source ore bed safe working method is administered using surface orientation drilling in advance |
| CN111075502A (en) * | 2020-02-18 | 2020-04-28 | 太原理工大学 | Method for preventing coal mine water and gas spray holes |
| CN111894671A (en) * | 2020-08-14 | 2020-11-06 | 山东科技大学 | Ground water pumping hole pumping and draining method aiming at working face top plate separation layer water damage |
| CN112012785A (en) * | 2020-09-11 | 2020-12-01 | 中国矿业大学 | Method for extracting pressure-relief gas by utilizing L-shaped drilling in overburden rock isolation grouting filling process |
| CN112012785B (en) * | 2020-09-11 | 2022-02-08 | 中国矿业大学 | Method for extracting pressure-relief gas by utilizing L-shaped drilling in overburden rock isolation grouting filling process |
| CN112360345A (en) * | 2020-10-27 | 2021-02-12 | 山东科技大学 | Method and system for reinforcing grouting of gas extraction hole under extremely soft coal seam and application |
| CN112879077A (en) * | 2021-01-13 | 2021-06-01 | 中煤科工开采研究院有限公司 | Coal and coalbed methane continuous development method based on ground directional horizontal hole |
| CN113123720A (en) * | 2021-03-22 | 2021-07-16 | 中国煤炭地质总局水文地质局 | Construction process for treating grouting holes and simultaneously using grouting holes as gas extraction holes in water damage area of coal seam floor |
| CN113107583A (en) * | 2021-05-21 | 2021-07-13 | 中国矿业大学 | Thick and hard roof high-gas coal seam gas extraction system and extraction method |
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