CN106978986A - Special thickness comprehensive coal face coal body high pressure water injection hole long range method for sealing - Google Patents
Special thickness comprehensive coal face coal body high pressure water injection hole long range method for sealing Download PDFInfo
- Publication number
- CN106978986A CN106978986A CN201710136197.5A CN201710136197A CN106978986A CN 106978986 A CN106978986 A CN 106978986A CN 201710136197 A CN201710136197 A CN 201710136197A CN 106978986 A CN106978986 A CN 106978986A
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- CN
- China
- Prior art keywords
- hole
- water injection
- sealing
- water
- injection hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 113
- 238000002347 injection Methods 0.000 title claims abstract description 74
- 239000007924 injection Substances 0.000 title claims abstract description 74
- 238000007789 sealing Methods 0.000 title claims abstract description 66
- 239000003245 coal Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229920000742 Cotton Polymers 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000002955 isolation Methods 0.000 claims abstract description 6
- 238000003780 insertion Methods 0.000 claims abstract description 4
- 230000037431 insertion Effects 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000011017 operating method Methods 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- 239000011440 grout Substances 0.000 claims description 3
- 238000007569 slipcasting Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000004568 cement Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000011083 cement mortar Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003466 welding Methods 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention relates to underground coal mine water injection hole method for sealing, specially special thick comprehensive coal face coal body high pressure water injection hole long range method for sealing, solve existing method for sealing and be easily caused refluence of injected water and current from the leakage of drilling surrounding medium crack, waste water resource, cause production inconvenience, water injection rate is small, the problem of falling flat, scheme：A, water injection hole is bored on coal body；B, insertion water injection pipe and hole sealing tube in hole, water filling pipe end set isolation catch pawl；The uniform material spilling hole of sealing of hole tube wall；C, with mixed with water leak-free cotton yarn in water injection hole aperture sealing of hole 1m；D, the cement injection sealing of hole into water injection hole, plug is installed in sealing of hole two-way；E, the water filling into water injection hole, interval can carry out high pressure water injection work in 1 day after water filling.Advantage：1st, sealed borehole length is long, it is ensured that high pressure water injection does not leak outside, and pressure-bearing is high, long lifespan, and water injection rate is big, and effect is good；2nd, reasonable in design, sealing quality is high, effect is good；3rd, it is simple in construction, it is with low cost, save manpower.
Description
Technical field
It is specially special thick comprehensive coal face coal body high pressure water injection hole long range the present invention relates to underground coal mine water injection hole method for sealing
Method for sealing.
Background technology
The outstanding top of coal mine rock burst, spontaneous combustion of coal, coal dust and top plate is all the weight of serious threat Safety of Coal Mine Production
Big disaster, can not only cause damage, the coal resources loss of installations and facilities, can also cause casualties.Horizontal high voltage is entered to coal body
Water filling, is a kind of effective ways for administering above-mentioned disaster.Coal texture can be made to change after pumping water into coal, caused under intensity
Drop, the ability for putting aside elasticity energy declines, and to be plastically deformed the ability increase that mode consumes elastic energy, impact can be greatly reduced
Press and the outstanding generation pushed up on ground.The increase of coal institute water content, temperature reduction after water filling, attachment oxygen and gas amount are reduced, for anti-
Control coal dust and spontaneous fire is very good.High pressure water injection is carried out to coal body, coal body drilled first by rig, boring aperture one
As use φ 75mm, drilling depth, angle, arrangement density according to condition of coal seam occurrence and the water filling purpose to be reached specifically and
It is fixed.Then by water injection pipe insertion drilling, drilling orifice is sealed, height is injected into drilling by water injection pipe using high pressure water-injection pump
Press water.The factor for influenceing high pressure water injection effect maximum, is exactly sealing of hole effect.Traditional method for sealing typically uses rubber hole packer
Sealing of hole；Or single iron pipe water filling is used, use yellow mud, cementing in aperture.The use of rubber hole packer sealing of hole is to lean on high pressure
Water makes rubber hole packer expand hold-down apertures wall to close drilling, and sealing of hole effect is bad, with water injecting pump start-stop have substantial amounts of water from
Flowed back in hole, and hole sealing depth is limited.Yellow mud, cementing is added to be to go deep into iron pipe after drilling in aperture filling using single iron pipe
Note yellow mud and cement and carry out sealing of hole, such sealing of hole is apart from short, and when carrying out high pressure water injection, current are easy to from the coal body around drilling
Crack is revealed, and is caused water injection rate very little, is fallen flat.Therefore, design one kind can avoid refluence of injected water and current from
Coalmass crevasse leakage around drilling, it is necessary effectively to carry out long range method for sealing to high pressure water injection hole.
The content of the invention
The existing method for sealing of present invention solution is easily caused refluence of injected water and current and let out from drilling surrounding medium crack
Dew, not only waste water resource, and being brought inconvenience to production, water injection rate is small, and there is provided a kind of special thick for the problem of falling flat
Comprehensive coal face coal body high pressure water injection hole long range method for sealing.
The present invention is realized by following operating procedure：Special thickness comprehensive coal face coal body high pressure water injection hole long range sealing of hole side
Method, including following operating procedure：
A, on coal body hole diameter be φ 75mm, depth be not less than stope tilt length 3/4 water injection hole；
B, water injection pipe and hole sealing tube are inserted in water injection hole, the water filling pipe range 24m, water filling pipe end is back welded at 3m places interval
The isolation catch pawl of two groups of attachment cotton yarns；The sealing of hole pipe range 21m, hole sealing tube is uniform from the tube wall beyond close water filling aperture 1m
There is material spilling hole；
C, with mixed with water leak-free cotton yarn in water injection hole aperture sealing of hole 1m；
D, the silicate grout sealing of hole by hole sealing tube note 435 into water injection hole, 15 ~ 20min of slip casting time, then in envelope
Plug is installed in sealing of hole two-way on the outside of the pipe of hole；
E, 1 ~ 3min of water filling in water injection hole, water injection pressure 2Mpa led to by the water filling two of water filling pipe end, be spaced 1 day after water filling
High pressure water injection work can be carried out.
Water filling pipe end back at 3m two groups of attachment cotton yarns of interval welding isolation catch pawl, can play and stop sealing of hole
Cement mortar, which enters water injection pipe, causes the effect of water filling blockage.Sealing of hole tube wall is provided with material spilling hole, facilitates cement mortar uniformly to irrigate
Sealing of hole, does not have material spilling hole within the 1m of water filling aperture, is easy to vacate sealing of hole region.With mixed with water leak-free cotton yarn sealing of hole
1m, it is ensured that sealing of hole is closely knit, the cement mortar of perfusion will not be excessive.Plug is installed in sealing of hole two-way on the outside of hole sealing tube, it is ensured that water
Mud does not leak outside.Water injection pipe 1 ~ 3min of water filling into hole, it is ensured that water injection pipe is unobstructed.
The water injection pipe is in charge of to be connected through a screw thread by the 6 of 8 3m length to be constituted, and the hole sealing tube is in charge of by the 4 of 7 3m length
It is connected through a screw thread composition.
The present invention has advantages below：1st, sealed borehole length can reach 20m or even longer, it is ensured that in high pressure water injection process
Reclaimed water does not leak outside, and bears water injection pressure height, and use time is long, and single hole water injection rate is big, and flood effectiveness is good；2nd, it is reasonable in design, sealing of hole
Quality is high, effect is good；3rd, simple in construction, with low cost, transport, install convenient, two workmans can complete.
Brief description of the drawings
Fig. 1 is sealing of hole schematic diagram of the present invention；
In figure：1- water injection pipes, 2- water filling two-ways, 3- hole sealing tubes, 4- sealing of hole two-ways, 5- water injection holes, 6- mixed with water leak-free cotton yarn,
7- material spilling holes, 8- cement mortars, 9- screw threads, 10- adheres to the isolation catch pawl of cotton yarn, 11- plugs.
Embodiment
Special thickness comprehensive coal face coal body high pressure water injection hole long range method for sealing, including following operating procedure：
A, hole diameter is φ 75mm on coal body, and depth is not less than the water injection hole 5 of stope tilt length 3/4, general deep
Degree is between 100 ~ 150m；
B, insertion water injection pipe 1 and hole sealing tube 3, the long 24m of the water injection pipe 1 in water injection hole 5, are in charge of by spiral shell by the 6 of 8 3m length
Line 9 connection composition, the termination of water injection pipe 1 back 3m place interval weld two groups of attachment cotton yarns isolation catch pawl 10；The hole sealing tube 3 is grown
21m, is in charge of by the 4 of 7 3m length and is made up of the connection of screw thread 9, hole sealing tube 3 is equal from the tube wall beyond 5 mouthfuls of 1m of water injection hole
It is furnished with material spilling hole 7；
C, with mixed with water leak-free cotton yarn 6 in the aperture sealing of hole 1m of water injection hole 5；
D, the sealing of hole of silicate grout 8 by the note 435 into water injection hole of hole sealing tube 3, slip casting time 15 ~ 20min, Ran Hou
Plug 11 is installed in the sealing of hole two-way 4 in the outside of hole sealing tube 3；
E, by the water filling two-way 2 of the termination of water injection pipe 1 into water injection hole 51 ~ 3min of water filling, water injection pressure 2Mpa, after water filling be spaced
High pressure water injection work can be carried out within 1 day.
Claims (3)
1. a kind of special thick comprehensive coal face coal body high pressure water injection hole long range method for sealing, it is characterised in that：Including following operating procedure：
A, on coal body hole diameter be φ 75mm, depth be not less than stope tilt length 3/4 water injection hole（5）；
B, in water injection hole（5）Interior insertion water injection pipe（1）And hole sealing tube（3）, the water injection pipe（1）Long 24m, water injection pipe（1）Termination
Back the isolation catch pawl of two groups of attachment cotton yarns is welded at interval at 3m（10）；The hole sealing tube（3）Long 21m, hole sealing tube（3）From close
Water injection hole（5）Material spilling hole is evenly equipped with tube wall beyond mouth 1m（7）；
C, with mixed with water leak-free cotton yarn（6）In water injection hole（5）Aperture sealing of hole 1m；
D, pass through hole sealing tube（3）The silicate grout of note 435 into water injection hole（8）Sealing of hole, 15 ~ 20min of slip casting time, so
Afterwards in hole sealing tube（3）The sealing of hole two-way in outside（4）Upper installation plug（11）；
E, pass through water injection pipe（1）The water filling two-way of termination（2）To water injection hole（5）Interior 1 ~ 3min of water filling, water injection pressure 2Mpa, water filling
Interval can carry out high pressure water injection work in 1 day afterwards.
2. special thick comprehensive coal face coal body high pressure water injection hole long range method for sealing according to claim 1, it is characterised in that：Institute
State water injection hole（5）Depth is between 100 ~ 150m.
3. special thick comprehensive coal face coal body high pressure water injection hole long range method for sealing according to claim 1 or 2, its feature exists
In：The water injection pipe（1）It is in charge of by the 6 of 8 3m length by screw thread（9）Connection composition, the hole sealing tube（3）By the 4 of 7 3m length
It is in charge of by screw thread（9）Connection composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710136197.5A CN106978986A (en) | 2017-03-09 | 2017-03-09 | Special thickness comprehensive coal face coal body high pressure water injection hole long range method for sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710136197.5A CN106978986A (en) | 2017-03-09 | 2017-03-09 | Special thickness comprehensive coal face coal body high pressure water injection hole long range method for sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106978986A true CN106978986A (en) | 2017-07-25 |
Family
ID=59338283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710136197.5A Pending CN106978986A (en) | 2017-03-09 | 2017-03-09 | Special thickness comprehensive coal face coal body high pressure water injection hole long range method for sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106978986A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581229A (en) * | 2009-06-25 | 2009-11-18 | 抚顺矿业集团有限责任公司 | Method for drilling and sealing holes through high-pressure water injection under coal mine |
| CN102287163A (en) * | 2011-09-08 | 2011-12-21 | 重庆市能源投资集团科技有限责任公司 | Drilling-sealing method and sealing device of coal mine underground ultrahigh pressure fracturing hole |
| CN202946093U (en) * | 2012-12-05 | 2013-05-22 | 兖矿集团有限公司 | High-pressure water injection hole plugging device for long drill hole of coal mine |
-
2017
- 2017-03-09 CN CN201710136197.5A patent/CN106978986A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581229A (en) * | 2009-06-25 | 2009-11-18 | 抚顺矿业集团有限责任公司 | Method for drilling and sealing holes through high-pressure water injection under coal mine |
| CN102287163A (en) * | 2011-09-08 | 2011-12-21 | 重庆市能源投资集团科技有限责任公司 | Drilling-sealing method and sealing device of coal mine underground ultrahigh pressure fracturing hole |
| CN202946093U (en) * | 2012-12-05 | 2013-05-22 | 兖矿集团有限公司 | High-pressure water injection hole plugging device for long drill hole of coal mine |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170725 |