CN101581229A - Method for drilling and sealing holes through high-pressure water injection under coal mine - Google Patents
Method for drilling and sealing holes through high-pressure water injection under coal mine Download PDFInfo
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- CN101581229A CN101581229A CNA2009100122154A CN200910012215A CN101581229A CN 101581229 A CN101581229 A CN 101581229A CN A2009100122154 A CNA2009100122154 A CN A2009100122154A CN 200910012215 A CN200910012215 A CN 200910012215A CN 101581229 A CN101581229 A CN 101581229A
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Abstract
The invention discloses a method for drilling and sealing holes through high-pressure water injection under a coal mine. The method comprises the following steps: drilling a borehole on a coal body first, wherein the depth of the borehole is between 10 and 15 meters and the bore diameter phi is 89 millimeters; continuously drilling a borehole of which the bore diameter phi is 42 millimeters inwards in the borehole of which the bore diameter phi is 89 millimeters; inserting a hole sealing sleeve into the borehole of which the bore diameter phi is 89 millimeters, wherein the hole sealing sleeve adapts to the length of the borehole of which the bore diameter phi is 89 millimeters, the wall of the sleeve is provided with a plurality of small holes, and polyurethane is used for sealing the holes at the orifices of the holes; and inserting a water injection pipe into the hole sealing sleeve, and injecting Mali powder into the hole sealing sleeve to seal the holes. The packing material can reach the strength after 10 to 20 minutes, and water is injected into the boreholes through the water injection pipe. The method has the advantages of reasonable design, simple structure, convenient and quick transportation and demounting, high hole sealing speed, good effect, high endured water injection pressure, and long service time.
Description
One, technical field
The method of drilling and sealing when the present invention relates to a kind of colliery industry and coal body being carried out high pressure water injection in the down-hole.
Two, background technology
The outstanding top of bump, spontaneous combustion of coal, coal dust and top board all is the great disaster of serious threat Safety of Coal Mine Production, not only can cause the damage of installations and facilities, and the coal resources loss also can cause casualties.Coal body is carried out high pressure water injection, is a kind of effective ways of administering above-mentioned disaster.At first use rig that coal body is drilled, boring aperture generally adopts ∮ 42mm, and drilling depth, angle, layout density are specifically decided according to the condition of coal seam occurrence and the water filling purpose that will reach.Then water injection pipe is inserted in the boring, seal drilling orifice, use high pressure water-injection pump in boring, to inject water under high pressure by water injection pipe.The structure of coal is changed, cause intensity to descend, the ability drop of savings elastic energy, and increase with the ability that the plastic strain mode consumes elastic energy, can significantly reduce the generation on bump and outstanding top.The increase of coal institute water content, temperature reduce after the water filling, adhere to oxygen and gas amount and reduce, and be very beneficial for control coal dust and spontaneous fire.Influencing the factor of high pressure water injection effect maximum, is exactly the sealing of hole effect.Traditional method for sealing generally is to use the water filling of ∮ 25mm sebific duct, with rubber hole packer sealing of hole; Or adopt single iron pipe water filling, use yellow mud, cement sealing of hole in the aperture.Using rubber hole packer sealing of hole is to make rubber hole packer turgor pressure tieholen wall seal boring by water under high pressure, and the sealing of hole effect is bad, have a large amount of water with the water injecting pump start-stop and reflux in the hole, and hole sealing depth is limited.Using single iron pipe to add yellow mud, cement sealing of hole is iron pipe to be stretched into the boring back carry out sealing of hole at aperture perfusion yellow mud and cement, need mix cement at the scene, construction technology complexity, engineering quantity are bigger, hardening of cement needs for a long time, and uses and can form the slit between the cement and hole wall after a period of time and leak.In case the sealing of hole failure is leaked, the current short circuit refluxes, and water filling is just with inoperative.Repeat construction and not only strengthen engineering quantity, loss material also can be wasted the plenty of time, affects hazard management opportunity adversely.
Three, summary of the invention
The purpose of this invention is to provide a kind of method for drilling and sealing holes through high-pressure water injection under coal mine fast and effectively, can under high-pressure state, guarantee water-tightly, reach due water injection pressure.
The technical solution used in the present invention is: method for drilling and sealing holes through high-pressure water injection under coal mine is the boring of first drilling depth 10～15m, aperture ∮ 89mm on coal body, the boring that ∮ 42mm is beaten in continuation inwards in the boring of ∮ 89mm again, then the sealing of hole sleeve pipe is inserted in the boring of ∮ 89mm, the boring length of sealing of hole sleeve pipe and ∮ 89mm adapts, some small holes are arranged on the tube wall, use the polyurethane sealing of hole in the aperture; Again water injection pipe is inserted in the sealing of hole sleeve pipe, and in the sealing of hole sleeve pipe, annotate the diffusing sealing of hole of Mary.
On sealing of hole outside of sleeve 0.5～2m tube wall, there is not hole; The diffusing ascending pipe of welding Mary on the tube wall of sealing of hole sleeve pipe outer end; In the flanged plate shutoff of sealing of hole sleeve pipe outer end.
Filler can reach intensity through 10～20min time, by water injection pipe water filling in boring.The present invention is reasonable in design, and is simple in structure, and transportation, dismounting is convenient, and sealing of hole speed is fast, effective, and bears the water injection pressure height, and service time is long.
Four, description of drawings
Fig. 1 is the inventive method schematic diagram;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the B-B sectional drawing of Fig. 1;
Fig. 4 is the C-C sectional drawing of Fig. 1;
Fig. 5 is the D-D sectional drawing of Fig. 1.
Five, the specific embodiment
Method for drilling and sealing holes through high-pressure water injection under coal mine, be the boring 3 of boring dark 10m, aperture ∮ 89mm on coal body, in the boring of ∮ 89mm, continue the boring 4 of drilling depth 90m, aperture ∮ 42mm inwards again, after having constructed, long 2 writing brushes of 10 1m are connected to form sealing of hole sleeve pipe 2 by screw thread 10, insert in the boring 3 of ∮ 89mm and connect fastening.On the tube wall of 9 pipes in inboard of forming sealing of hole sleeve pipe 2, plurality of holes 8 is arranged, do not have hole on the outermost root canal wall, use polyurethane 11 fillings between 1 meter boring 3 with ∮ 89mm in sealing of hole sleeve pipe 2 outer ends.Again with long 4 being in charge of by screw thread 10 and connecting to form water injection pipe 1 of 10 2m, insert in the sealing of hole sleeve pipe 2 and the 10m distance that surpasses ∮ 89mm reaming 3 stretches in the ∮ 42mm boring 4.On sealing of hole sleeve pipe 2 outer end tube walls, be welded with the diffusing ascending pipe 7 of Mary in 1 writing brush footpath; Sealing of hole sleeve pipe 2 outer ends are connected fastening with water injection pipe 1 usefulness rubber seal 12 with bolt 6 the sealing of hole sleeve pipe 2 that is welded with flanged plate 5 with flanged plate 5 shutoff.Mary diffusing 9 is injected in the sealing of hole sleeve pipes 2 from the diffusing ascending pipe 7 of Mary with grouting pump, the Mary looses and 9 to be filled in the boring 3 of ∮ 89mm and the spaces in the sealing of hole sleeve pipe 2 by the hole on the sealing of hole sleeve pipe 28, makes the boring 3 of sealing of hole sleeve pipe 2, water injection pipe 1 and ∮ 89mm form an integral body.Filler can reach intensity through 10～20min time, by water injection pipe 1 water filling in boring 4.
Claims (4)
1, a kind of method for drilling and sealing holes through high-pressure water injection under coal mine, it is characterized in that: the boring (3) of first drilling depth 10～15m, aperture ∮ 89mm on coal body, in the boring (3) of ∮ 89mm, continue the boring of hole diameter ∮ 42mm inwards (4) again, then sealing of hole sleeve pipe (2) is inserted in the boring (3) of ∮ 89mm, sealing of hole sleeve pipe (2) adapts with boring (3) length of ∮ 89mm, some small holes (8) are arranged on the tube wall, use polyurethane (11) sealing of hole in the aperture; Again water injection pipe (1) is inserted in the sealing of hole sleeve pipe (2), and in sealing of hole sleeve pipe (2), annotate diffusing (9) sealing of hole of Mary.
2, method for drilling and sealing holes through high-pressure water injection under coal mine according to claim 1 is characterized in that: do not have hole on the 0.5～2m tube wall of sealing of hole sleeve pipe (2) outside; The diffusing ascending pipe (7) of welding Mary on the tube wall of sealing of hole sleeve pipe (2) outer end; Use flanged plate (5) shutoff in sealing of hole sleeve pipe (2) outer end.
3, method for drilling and sealing holes through high-pressure water injection under coal mine according to claim 1 is characterized in that: sealing of hole sleeve pipe (2) adopts long 2 writing brushes of the 1m composition that is threaded; Water injection pipe (1) adopts 2m long 4 to be in charge of the composition that is threaded.
4, method for drilling and sealing holes through high-pressure water injection under coal mine according to claim 3, it is characterized in that: in the diffusing ascending pipe (7) of Mary loose the Mary (9) injection sealing of hole sleeve pipes (2), Mary diffusing (9) was filled into the interior space that reaches in the sealing of hole sleeve pipe (2) of boring (3) of ∮ 89mm by the hole (8) on the sealing of hole sleeve pipe (2) with grouting pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100122154A CN101581229A (en) | 2009-06-25 | 2009-06-25 | Method for drilling and sealing holes through high-pressure water injection under coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100122154A CN101581229A (en) | 2009-06-25 | 2009-06-25 | Method for drilling and sealing holes through high-pressure water injection under coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101581229A true CN101581229A (en) | 2009-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2009100122154A Pending CN101581229A (en) | 2009-06-25 | 2009-06-25 | Method for drilling and sealing holes through high-pressure water injection under coal mine |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071962A (en) * | 2010-12-24 | 2011-05-25 | 中国矿业大学 | Method for sealing downward hole |
| CN103541679A (en) * | 2013-10-16 | 2014-01-29 | 中国矿业大学 | Method for sealing underground hydraulic fracture drilled hole of coal mine in combined manner |
| CN103806914A (en) * | 2014-01-27 | 2014-05-21 | 冀中能源峰峰集团有限公司大淑村矿 | Coal mining method for coal and gas outburst mine |
| CN103939126A (en) * | 2014-03-31 | 2014-07-23 | 解波 | Coal seam water injection method of coal mining working face |
| CN105114118A (en) * | 2015-08-21 | 2015-12-02 | 贵州大学 | Flat hole gas extraction structure and implementing method thereof |
| CN106437715A (en) * | 2016-11-25 | 2017-02-22 | 河南理工大学 | Prevention and treatment method of large-mining-height coal mining working face rib spalling roof fall |
| CN106978986A (en) * | 2017-03-09 | 2017-07-25 | 大同煤矿集团有限责任公司 | Special thickness comprehensive coal face coal body high pressure water injection hole long range method for sealing |
| CN117569302A (en) * | 2024-01-15 | 2024-02-20 | 中国电建集团西北勘测设计研究院有限公司 | Water injection spiral drilling pore-forming construction method suitable for saline-alkali soil |
| US20240264054A1 (en) * | 2022-01-20 | 2024-08-08 | Shandong University Of Science And Technology | Method for estimating contribution rate of elastic energy of top plate during instability catastrophe of deep gas-containing coal body |
-
2009
- 2009-06-25 CN CNA2009100122154A patent/CN101581229A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071962B (en) * | 2010-12-24 | 2012-10-24 | 中国矿业大学 | Method for sealing downward hole |
| CN102071962A (en) * | 2010-12-24 | 2011-05-25 | 中国矿业大学 | Method for sealing downward hole |
| CN103541679B (en) * | 2013-10-16 | 2016-11-23 | 中国矿业大学 | Method for sealing underground hydraulic fracture drilled hole of coal mine in combined manner |
| CN103541679A (en) * | 2013-10-16 | 2014-01-29 | 中国矿业大学 | Method for sealing underground hydraulic fracture drilled hole of coal mine in combined manner |
| CN103806914A (en) * | 2014-01-27 | 2014-05-21 | 冀中能源峰峰集团有限公司大淑村矿 | Coal mining method for coal and gas outburst mine |
| CN103806914B (en) * | 2014-01-27 | 2015-11-11 | 冀中能源峰峰集团有限公司大淑村矿 | A kind of coal and gas outburst mine coal-mining method |
| CN103939126A (en) * | 2014-03-31 | 2014-07-23 | 解波 | Coal seam water injection method of coal mining working face |
| CN105114118A (en) * | 2015-08-21 | 2015-12-02 | 贵州大学 | Flat hole gas extraction structure and implementing method thereof |
| CN106437715A (en) * | 2016-11-25 | 2017-02-22 | 河南理工大学 | Prevention and treatment method of large-mining-height coal mining working face rib spalling roof fall |
| CN106437715B (en) * | 2016-11-25 | 2019-10-25 | 河南理工大学 | A kind of control method of high working face coal working face side fall roof |
| CN106978986A (en) * | 2017-03-09 | 2017-07-25 | 大同煤矿集团有限责任公司 | Special thickness comprehensive coal face coal body high pressure water injection hole long range method for sealing |
| US20240264054A1 (en) * | 2022-01-20 | 2024-08-08 | Shandong University Of Science And Technology | Method for estimating contribution rate of elastic energy of top plate during instability catastrophe of deep gas-containing coal body |
| CN117569302A (en) * | 2024-01-15 | 2024-02-20 | 中国电建集团西北勘测设计研究院有限公司 | Water injection spiral drilling pore-forming construction method suitable for saline-alkali soil |
| CN117569302B (en) * | 2024-01-15 | 2024-04-05 | 中国电建集团西北勘测设计研究院有限公司 | Water injection spiral drilling pore-forming construction method suitable for saline-alkali soil |
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Open date: 20091118 |