CN102704986A - Pressure-controlled hole sealing method for gas drainage hole - Google Patents
Pressure-controlled hole sealing method for gas drainage hole Download PDFInfo
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- CN102704986A CN102704986A CN2012102109777A CN201210210977A CN102704986A CN 102704986 A CN102704986 A CN 102704986A CN 2012102109777 A CN2012102109777 A CN 2012102109777A CN 201210210977 A CN201210210977 A CN 201210210977A CN 102704986 A CN102704986 A CN 102704986A
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Abstract
The invention relates to a pressure-controlled hole sealing method for a gas drainage hole. Two hole sealing cloth bags, which serve as two separation sections, are arranged at the two ends of a hole sealing section of the gas drainage hole, and a macromolecular material is injected to the hole sealing section between the two separation sections until a certain pressure is reached, so that the macromolecular material can be fully filled in the hole sealing section and can permeate into cracks in a hole wall. Thus, the pressure-controlled hole sealing method for the gas drainage hole has the advantages of excellence in sealing of a borehole pipe, good quality in hole sealing, and high labor efficiency, and the gas drainage rate is increased from the original 30% to 80%.
Description
Technical field
The present invention relates to the method for a kind of gas pumping hole pressure control sealing of hole.
Background technology
At present; Extraction hole hole-sealing technology generally adopts cloth to dip in to wrap up in the chemical pulp looping in the method for gas pumping pipe outer wall with filling extraction pipe and hole wall gap under the coal mine, is a kind of no press seal hole technology, is a kind of open type method for sealing of tunnel; There are a lot of weak points in it: as run into boring position of opening the place ahead country rock, the coal seam lithology is changeable; Have situation broken, weak tectosome, rock, cracks in coal seam can not fillings, more can not in the breaking surrounding rock crack, permeate; Cause bore closed not tight, sealing quality is bad.
Summary of the invention
Technical problem to be solved by this invention is to overcome drawbacks such as method, bore closed that extraction hole hole-sealing technology under the existing coal mine do not have the press seal hole with open type are tight, sealing quality difference, makes grouting serous fluid be stabilized in following a period of time of certain pressure to realize the method for pressure control slip casting, the good sealing that reaches orifice tube, sealing quality is good, efficiency is high a kind of gas pumping hole pressure control sealing of hole and provide through regulating the grouting pump flow.
The present invention solves the technical scheme that its technical problem takes: the method for this gas pumping hole pressure control sealing of hole is characterized in that it can carry out through following seven steps:
A, at first according to the known coal seam gas-bearing capacity in exploiting field, permeability coefficient and around geological conditions, appropriate design data of holes drilled, layout;
B, measure setting-out, implement bore operation, accomplish boring, mash gas pumping drilling is set on coal body according to design;
C, installation gas pumping pipe; In mash gas pumping drilling, place the gas pumping pipe; Be provided with aperture sealing of hole cloth bag at the gas pumping pipe near hell one end, the gas pumping pipe other end is provided with sealing of hole cloth bag in the hole, is provided with Grouting Pipe in the sealing of hole cloth bag of aperture; Be provided with Grouting Pipe in the sealing of hole cloth bag in the hole, be provided with Grouting Pipe, stack in the sealing of hole section between the sealing of hole cloth bag in aperture sealing of hole cloth bag and the hole;
D, connection filling system; Use pneumatic two fluid grouting pump to inject a certain amount of polymer chemistry reinforcing slurries Bo Leiyin PN-6 type to aperture sealing of hole cloth bag with through Grouting Pipe sealing of hole cloth bag in the hole, treat that slurry reaction solidifies the back and forms distance piece in aperture distance piece and the hole through Grouting Pipe;
E, pressure control slip casting are that sealing of hole section injection polymer chemistry is reinforced slurries Bo Leiyin PN-6 type through Grouting Pipe cavity in the middle of the distance piece in aperture distance piece, hole, and regulate flow-control pressure;
F, fill with and keep after the sealing of hole section 3～4MPa grouting pressure to continue slip casting, and can do suitably adjustment, make slurries fill with diffusion sealing of hole Duan Bingxiang hole wall crack in fully, fully permeate according to the actual conditions of coal body cranny development;
G, slip casting finish scavenging pump and pipeline.
The present invention solves another technical scheme that its technical problem takes: described sealing of hole diameter is 75mm～300mm, and the sealing of hole segment length is 1.5m～20m.
The method of this gas pumping provided by the present invention hole pressure control sealing of hole; It has a great difference with the method that the open type of using does not in the past have the press seal hole; It is distance piece that the two ends that it is employed in gas pumping hole sealing of hole section are provided with the sealing of hole cloth bag; Sealing of hole section injection macromolecular material in the middle of two distance pieces also reaches certain pressure; Make to be full of in macromolecular material and the crack on hole wall in the sealing of hole section and permeate, thereby reach that good sealing, the sealing quality of orifice tube is good, efficiency is high that the gas pumping rate brings up to 80% by original 30%.
Description of drawings
Fig. 1 is the method structural representation of the gas pumping hole pressure control sealing of hole that the embodiment of the invention provided.
The specific embodiment
With reference to accompanying drawing 1, the method for this gas pumping hole pressure control sealing of hole that the embodiment of the invention provided, it can carry out through following seven steps:
A, at first according to the known coal seam gas-bearing capacity in exploiting field, permeability coefficient and around geological conditions, appropriate design data of holes drilled, layout;
B, measure setting-out, implement bore operation, accomplish boring, mash gas pumping drilling 2 is set on coal body 1 according to design;
C, installation gas pumping pipe 6; In mash gas pumping drilling 2, place gas pumping pipe 6; Be provided with sealing of hole cloth bag 3 at gas pumping pipe 6 near hell one end, gas pumping pipe 6 other ends are provided with sealing of hole cloth bag 9, are provided with Grouting Pipe 4 in the sealing of hole cloth bag 3; Be provided with Grouting Pipe 8 in the sealing of hole cloth bag 9, be provided with Grouting Pipe 7, stack 5 in 9 sealing of hole sections 10 of sealing of hole cloth bag 3 and sealing of hole cloth bag;
D, connection filling system; Use pneumatic two fluid grouting pump through Grouting Pipe 4 to aperture sealing of hole cloth bag 3 with inject a certain amount of polymer chemistry through Grouting Pipe 8 sealing of hole cloth bag 9 in the hole and reinforce slurries Bo Leiyin PN-6 type, treat that slurry reaction solidifies the back and forms distance piece 9 ' in aperture distance piece 3 ' and the hole;
E, pressure control slip casting are that sealing of hole section 10 injection polymer chemistry are reinforced slurries Bo Leiyin PN-6 type through Grouting Pipe 7 cavity in the middle of the distance piece 9 ' in aperture distance piece 3 ', hole, and regulate flow-control pressure;
F, fill with sealing of hole section 10 back and keep 3～4MPa grouting pressure to continue slip casting, and can do suitably adjustment, make slurries fill with sealing of hole section 10 fully and diffusion in the hole wall crack, fully infiltration according to the actual conditions of coal body cranny development;
G, slip casting finish scavenging pump and pipeline.
Described sealing of hole diameter is 75mm～300mm, and the sealing of hole segment length is 1.5m～20m.
Described macromolecule chemical material is a Bo Leiyin PN-6 type, is that effluent north becomes the development and production of mining industry Science and Technology Ltd. together, and use for sale; These slurries have higher bonding force and mechanical performance preferably, with the rock stratum affinity are preferably arranged, and the flexility of induration bears certain stratum deformation; After material injects the rock stratum; Low viscosity mixtures keeps several seconds, penetrates into tiny crack and expands, and its performance parameter of Bo Leiyin PN-6 type is following:
Described grouting pump is pneumatic two fluid grouting pump; Be that effluent north is with becoming the development and production of mining industry Science and Technology Ltd.; Use for sale, and be called " a kind of pneumatic two fluid grouting pump " with name and applied for utility model patent, authorized patent right; The patent No. is: 200620023450.3, and pneumatic its performance indications of two fluid grouting pump are following:
1. main frame model ZBQ_5/12 type
2. pressure ratio is 65: 1
3. maximum pump discharge 20L/min
4. supply gas pressure 0.2～0.6MPa
5. air consumption 3m
3/ min
Claims (2)
1. the method for a gas pumping hole pressure control sealing of hole, it is characterized in that: it can carry out through following seven steps:
A, at first according to the known coal seam gas-bearing capacity in exploiting field, permeability coefficient and around geological conditions, appropriate design data of holes drilled, layout;
B, measure setting-out, implement bore operation, accomplish boring, mash gas pumping drilling (2) is set on coal body (1) according to design;
C, installation gas pumping pipe (6); In mash gas pumping drilling (2), place gas pumping pipe (6); Be provided with aperture sealing of hole cloth bag (3) at gas pumping pipe (6) near hell one end, gas pumping pipe (6) other end is provided with sealing of hole cloth bag (9) in the hole, is provided with Grouting Pipe (4) in the aperture sealing of hole cloth bag (3); Be provided with Grouting Pipe (8) in the hole in the sealing of hole cloth bag (9), be provided with Grouting Pipe (7), stack (5) in aperture sealing of hole cloth bag (3) and the hole between sealing of hole cloth bag (9) in the sealing of hole section (10);
D, connection filling system; Use grouting pump through Grouting Pipe (4) to aperture sealing of hole cloth bag (3) with inject a certain amount of polymer chemistry through Grouting Pipe (8) sealing of hole cloth bag (9) in the hole and reinforce slurries, treat that slurry reaction solidifies the back and forms distance piece (9 ') in aperture distance piece (3 ') and the hole;
E, pressure control slip casting are that sealing of hole section (10) injection polymer chemistry is reinforced slurries through Grouting Pipe (7) cavity in the middle of the distance piece (9 ') in aperture distance piece (3 '), hole, and regulate flow-control pressure;
F, fill with sealing of hole section (10) back and keep 3～4MPa grouting pressure to continue slip casting, and can do suitably adjustment, make slurries fill with sealing of hole section (10) fully and diffusion in the hole wall crack, fully infiltration according to the actual conditions of coal body cranny development;
G, slip casting finish scavenging pump and pipeline.
2. the method for gas pumping according to claim 1 hole pressure control sealing of hole is characterized in that: described sealing of hole diameter is 75mm～300mm, and the sealing of hole segment length is 1.5m～20m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102109777A CN102704986A (en) | 2012-06-26 | 2012-06-26 | Pressure-controlled hole sealing method for gas drainage hole |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102109777A CN102704986A (en) | 2012-06-26 | 2012-06-26 | Pressure-controlled hole sealing method for gas drainage hole |
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| CN102704986A true CN102704986A (en) | 2012-10-03 |
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| CN2012102109777A Pending CN102704986A (en) | 2012-06-26 | 2012-06-26 | Pressure-controlled hole sealing method for gas drainage hole |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926700A (en) * | 2012-11-23 | 2013-02-13 | 平顶山市安泰华矿用安全设备制造有限公司 | Grouting bag type hole packer with multi-section seal |
| CN103362471A (en) * | 2013-07-30 | 2013-10-23 | 焦作市长海机械科技有限公司 | Bag type gas extraction hole plugging device |
| CN103485747A (en) * | 2013-09-23 | 2014-01-01 | 陕西煤业化工技术研究院有限责任公司 | Automatic pressure-adding borehole sealing device and method |
| CN103498644A (en) * | 2013-09-29 | 2014-01-08 | 中国矿业大学 | Outburst prevention method in rock cross-cut coal uncovering and gas outburst coal seam double-curtain grouting |
| CN105317397A (en) * | 2015-10-30 | 2016-02-10 | 中国矿业大学 | Double cloth bags type grouting sealing set and method |
| CN103362471B (en) * | 2013-07-30 | 2016-11-30 | 焦作市长海机械科技有限公司 | Pocket type gas pumping hole hole sealing device |
| CN106351606A (en) * | 2016-11-18 | 2017-01-25 | 河南理工大学 | Method for improving hole sealing effect based on drilled surrounding rock fracture structure |
| CN107387120A (en) * | 2017-08-09 | 2017-11-24 | 山西晋城无烟煤矿业集团有限责任公司 | Underground coal mine passing fault, break up coal body region federation consolidation grouting method |
| CN109184781A (en) * | 2018-09-13 | 2019-01-11 | 河南工程学院 | Mine district gas drainage device |
| CN109236226A (en) * | 2018-07-06 | 2019-01-18 | 中国矿业大学 | A kind of mash gas pumping drilling method for sealing of grooving-backfill method building antiseepage barrier |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926700A (en) * | 2012-11-23 | 2013-02-13 | 平顶山市安泰华矿用安全设备制造有限公司 | Grouting bag type hole packer with multi-section seal |
| CN103362471A (en) * | 2013-07-30 | 2013-10-23 | 焦作市长海机械科技有限公司 | Bag type gas extraction hole plugging device |
| CN103362471B (en) * | 2013-07-30 | 2016-11-30 | 焦作市长海机械科技有限公司 | Pocket type gas pumping hole hole sealing device |
| CN103485747A (en) * | 2013-09-23 | 2014-01-01 | 陕西煤业化工技术研究院有限责任公司 | Automatic pressure-adding borehole sealing device and method |
| CN103485747B (en) * | 2013-09-23 | 2016-08-10 | 陕西煤业化工技术研究院有限责任公司 | A kind of automatic compensation borehole sealing device and method |
| CN103498644A (en) * | 2013-09-29 | 2014-01-08 | 中国矿业大学 | Outburst prevention method in rock cross-cut coal uncovering and gas outburst coal seam double-curtain grouting |
| CN105317397A (en) * | 2015-10-30 | 2016-02-10 | 中国矿业大学 | Double cloth bags type grouting sealing set and method |
| CN106351606A (en) * | 2016-11-18 | 2017-01-25 | 河南理工大学 | Method for improving hole sealing effect based on drilled surrounding rock fracture structure |
| CN107387120A (en) * | 2017-08-09 | 2017-11-24 | 山西晋城无烟煤矿业集团有限责任公司 | Underground coal mine passing fault, break up coal body region federation consolidation grouting method |
| CN109236226A (en) * | 2018-07-06 | 2019-01-18 | 中国矿业大学 | A kind of mash gas pumping drilling method for sealing of grooving-backfill method building antiseepage barrier |
| CN109184781A (en) * | 2018-09-13 | 2019-01-11 | 河南工程学院 | Mine district gas drainage device |
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Address after: Three Jiangdong Road, Xingtai Development Zone, Hebei 054001, China Applicant after: Hebei Tongcheng Technology Co., Ltd. Address before: Three Jiangdong Road, Xingtai Development Zone, Hebei 054001, China Applicant before: Hebei Tongcheng Mining Technology Co., Ltd. |
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Address after: 054001 No. 1666, main street, Xingtai Economic Development Zone, Hebei Applicant after: Hebei Tongcheng Technology Co., Ltd. Address before: Three Jiangdong Road, Xingtai Development Zone, Hebei 054001, China Applicant before: Hebei Tongcheng Technology Co., Ltd. |
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Application publication date: 20121003 |