CN102352225A - Powder for plugging air leaking crack - Google Patents
Powder for plugging air leaking crack Download PDFInfo
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- CN102352225A CN102352225A CN2011101855018A CN201110185501A CN102352225A CN 102352225 A CN102352225 A CN 102352225A CN 2011101855018 A CN2011101855018 A CN 2011101855018A CN 201110185501 A CN201110185501 A CN 201110185501A CN 102352225 A CN102352225 A CN 102352225A
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Abstract
The invention discloses a powder for plugging an air leaking crack. The powder comprises, by mass, 20 to 25 parts of bentonite, 30 to 35 parts of talcum powder, 18 to 20 parts of a super absorbent resin, 12 to 15 parts of sodium alginate and 10 to 15 parts of anhydrous calcium sulfate, and all the above-mentioned components are directly mixed for utilization. The powder is especially applicable to plugging of air leaking cracks in underground coal mines caused by drilling in the process of gas extraction. According to the invention, under the action of positive pressure from a compressed air system and negative pressure from gas extraction, lubricity of talcum powder enables the powder to be transported to a deep crack; when transportation of the powder is stopped, bentonite and the super absorbent resin absorb water and swell, sodium alginate powder becomes wet when meeting water, hydration of the sodium alginate powder enables the surface of the sodium alginate powder to have viscosity, the sodium alginate powder enables all the components of the powder to bond together to form aggregate and to adhere to crack walls, the powder continues to swell after anhydrous calcium sulfate absorbs water, and anhydrous calcium sulfate turns into hard gypsum at the same time, which enables the hardness of the powder aggregate to be increased and the powder aggregate to firmly plug the crack. All the materials used in the invention are common material on the market, which enables a low cost to be obtained.
Description
Technical field
The present invention relates to a kind of material of the crack of leaking out of shutoff coal mine gas extraction borehole country rock, relate in particular to the leak out powder in crack of a kind of shutoff.
Background technology
The gas disaster is that the coal master wants one of natural disaster; Through hole pumping and mining gas is the important means that the gas disaster is administered in the colliery; Yet along with constantly carrying out of gas pumping; The boring wall-rock crack germinates, expands, links up; Finally can cause the tunnel air under the extraction action of negative pressure, to be prone to get in the extraction borehole from these cracks of leaking out; Thereby cause the gas pumping density loss, shortened effective extraction life-span of extraction borehole, reduced the utilization ratio of boring.
In the prior art, be to solve the technical barrier that gas density descends, adopt secondary hole sealing method, fine expansion powder is transported in the crack of leaking out of mash gas pumping drilling periphery, and then the effective shutoff crack of leaking out.Fine expansion powder of the prior art is formulated according to a certain percentage by several materials such as cement, yellow mud, lime powder, terra alba and industrial starch.
There is following shortcoming at least in above-mentioned prior art:
Under down-hole compressed-air system malleation and gas pumping suction function, the above-mentioned powder resistance of in the crack, migrating is bigger, influences the powder transport distance; Water regain is few, can not fully expand, and viscosity is poor, hardness is low; Be prone to be drawn into the gas pumping system, thereby influence the shutoff crack effect of leaking out.
Summary of the invention
The purpose of this invention is to provide a kind of being easy to and in the crack of leaking out, migrate, and effective shutoff boring country rock the leak out powder in crack of the shutoff in crack that leaks out.
The objective of the invention is to realize through following technical scheme:
The leak out powder in crack of shutoff of the present invention comprises following component:
Wilkinite 20-25 mass parts, talcum powder 30-35 mass parts, High hydrophilous resin 18-20 mass parts, sodium alginate 12-15 mass parts, anhydrous calciumsulphate 10-15 mass parts, each component mixes.
Technical scheme by the invention described above provides can be found out; The leak out powder in crack of shutoff provided by the invention; Comprise wilkinite 20-25 mass parts, talcum powder 30-35 mass parts, High hydrophilous resin 18-20 mass parts, sodium alginate 12-15 mass parts, the mixing of anhydrous calciumsulphate 10-15 mass parts; Be easy in the crack of leaking out, migrate, and the effective shutoff boring country rock crack of leaking out.
Embodiment
To do to describe in detail further to the embodiment of the invention below.
The leak out powder in crack of shutoff of the present invention, its preferable embodiment is:
Comprise following component:
Wilkinite 20-25 mass parts, talcum powder 30-35 mass parts, High hydrophilous resin 18-20 mass parts, sodium alginate 12-15 mass parts, anhydrous calciumsulphate 10-15 mass parts, each component mixes.
The granularity of described wilkinite, talcum powder, High hydrophilous resin, sodium alginate, anhydrous calciumsulphate is the 140-200 order.
The water content of described wilkinite, talcum powder, High hydrophilous resin, sodium alginate, anhydrous calciumsulphate is 3-7%.
The leak out powder in crack of the object of the invention shutoff is easy in the crack of leaking out, migrate, and the effective shutoff boring country rock crack of leaking out.Its beneficial effect is:
Powder can be transported to the crack, deep under down-hole compressed-air system malleation and gas pumping negative pressure, make plugging effect better; Powder can the heavy several thousand times water of specific absorption self and fully expand; Powder after moistening has high viscosity and meeting setting and harden, thereby is difficult for being sucked the gas pumping system by the extraction negative pressure; Powder is the shutoff mash gas pumping drilling crack of leaking out on every side effectively, increases substantially gas pumping concentration, negative pressure and pure gas flow, prolongs the mash gas pumping drilling service life.
Specific embodiment:
Embodiment 1:
With following component proportioning by mass percentage:
Wilkinite 25%, talcum powder 35%, High hydrophilous resin 20%, sodium alginate 10%, anhydrous calciumsulphate 10%; Wilkinite, talcum powder, High hydrophilous resin, sodium alginate and anhydrous calciumsulphate particle diameter are 140 orders, can use after these materials are mixed by mass percentage.
Embodiment 2:
With following component proportioning by mass percentage:
Wilkinite 23%, talcum powder 32%, High hydrophilous resin 19%, sodium alginate 14%, anhydrous calciumsulphate 12%; Wilkinite, talcum powder, High hydrophilous resin, sodium alginate and anhydrous calciumsulphate particle diameter are 170 orders, can use after these materials are mixed by mass percentage.
Embodiment 3:
With following component proportioning by mass percentage:
Wilkinite 20%, talcum powder 30%, High hydrophilous resin 20%, sodium alginate 15%, anhydrous calciumsulphate 15%; Wilkinite, talcum powder, High hydrophilous resin, sodium alginate and anhydrous calciumsulphate particle diameter are 200 orders, can use after these materials are mixed by mass percentage.
The foregoing description realize leaking out principle of crack shutoff is:
Utilize the negative pressure of inherent compressed-air system malleation and gas pumping system under the coal mine, reserve the small bore of construction around section or the mash gas pumping drilling, powder is transported in the crack of leaking out around the mash gas pumping drilling through mash gas pumping drilling sealing of hole sector hole mouth; Talcous oilness makes powder can migrate to the crack, deep.After the powder migration stops; Utilize down-hole waterworks, spraying gun and nozzle to produce the high speed superfine spray, and for the powder that has been transported in the crack of leaking out competent moisture is provided through the small bore of construction around mash gas pumping drilling sealing of hole sector hole mouth reservation section or the mash gas pumping drilling.Wilkinite in the powder, High hydrophilous resin water-swelling; Sodium alginate powder is met water and is become wet; The hydration of this particulate makes its surface have viscosity; With each component of powder formation agglomerate that is bonded together; And with crack wall bonding, anhydrous calciumsulphate suction back powder continues to expand, and becomes the gypsum of hard simultaneously; Increase the hardness of powder group, firmly the shutoff crack.
The above; Only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (3)
1. the shutoff powder in crack that leaks out is characterized in that, comprises following component:
Wilkinite 20-25 mass parts, talcum powder 30-35 mass parts, High hydrophilous resin 18-20 mass parts, sodium alginate 12-15 mass parts, anhydrous calciumsulphate 10-15 mass parts, each component mixes.
2. the leak out powder in crack of shutoff according to claim 1 is characterized in that the granularity of described wilkinite, talcum powder, High hydrophilous resin, sodium alginate, anhydrous calciumsulphate is the 140-200 order.
3. the leak out powder in crack of shutoff according to claim 2 is characterized in that the water content of described wilkinite, talcum powder, High hydrophilous resin, sodium alginate, anhydrous calciumsulphate is 3-7%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110185501 CN102352225B (en) | 2011-07-04 | 2011-07-04 | Powder for plugging air leaking crack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110185501 CN102352225B (en) | 2011-07-04 | 2011-07-04 | Powder for plugging air leaking crack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102352225A true CN102352225A (en) | 2012-02-15 |
| CN102352225B CN102352225B (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110185501 Active CN102352225B (en) | 2011-07-04 | 2011-07-04 | Powder for plugging air leaking crack |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953752A (en) * | 2012-10-30 | 2013-03-06 | 中国矿业大学 | Sealing method of water-containing drill hole for gas extraction |
| CN103450441A (en) * | 2013-07-29 | 2013-12-18 | 洛阳嘉冠化工产品有限公司 | Double-bag foaming component for sealing gas extraction holes of coal mines |
| CN106519770A (en) * | 2015-09-14 | 2017-03-22 | 庄少玉 | Universal environment-friendly nano-powder |
| CN107344835A (en) * | 2017-07-20 | 2017-11-14 | 徐州工程学院 | A kind of plugging material in cement concrete pavement of aerodrome crack |
| CN107760090A (en) * | 2016-08-17 | 2018-03-06 | 庄少玉 | Seaweeds powder of lacquer putty for use on |
| CN107905762A (en) * | 2017-10-11 | 2018-04-13 | 山东科技大学 | A kind of solid powder band pressure grouting dynamic seal hole method |
| CN108825296A (en) * | 2018-07-19 | 2018-11-16 | 河南理工大学 | A kind of static anti-reflection heating promotion gas pumping method of solid matter |
| CN113636056A (en) * | 2021-08-11 | 2021-11-12 | 安庆中船柴油机有限公司 | Marine diesel engine cooling system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664044A (en) * | 2005-02-08 | 2005-09-07 | 宜兴市嘉业土工合成材料有限公司 | Bentonite anti-seep jointing material |
| CN101486891A (en) * | 2008-01-18 | 2009-07-22 | 杨增忠 | Anti-water seepage powder water-proofing material |
-
2011
- 2011-07-04 CN CN 201110185501 patent/CN102352225B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664044A (en) * | 2005-02-08 | 2005-09-07 | 宜兴市嘉业土工合成材料有限公司 | Bentonite anti-seep jointing material |
| CN101486891A (en) * | 2008-01-18 | 2009-07-22 | 杨增忠 | Anti-water seepage powder water-proofing material |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953752A (en) * | 2012-10-30 | 2013-03-06 | 中国矿业大学 | Sealing method of water-containing drill hole for gas extraction |
| CN102953752B (en) * | 2012-10-30 | 2015-06-17 | 中国矿业大学 | Sealing method of water-containing drill hole for gas extraction |
| CN103450441A (en) * | 2013-07-29 | 2013-12-18 | 洛阳嘉冠化工产品有限公司 | Double-bag foaming component for sealing gas extraction holes of coal mines |
| CN106519770A (en) * | 2015-09-14 | 2017-03-22 | 庄少玉 | Universal environment-friendly nano-powder |
| CN107760090A (en) * | 2016-08-17 | 2018-03-06 | 庄少玉 | Seaweeds powder of lacquer putty for use on |
| CN107344835A (en) * | 2017-07-20 | 2017-11-14 | 徐州工程学院 | A kind of plugging material in cement concrete pavement of aerodrome crack |
| CN107905762A (en) * | 2017-10-11 | 2018-04-13 | 山东科技大学 | A kind of solid powder band pressure grouting dynamic seal hole method |
| CN108825296A (en) * | 2018-07-19 | 2018-11-16 | 河南理工大学 | A kind of static anti-reflection heating promotion gas pumping method of solid matter |
| CN113636056A (en) * | 2021-08-11 | 2021-11-12 | 安庆中船柴油机有限公司 | Marine diesel engine cooling system |
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| Publication number | Publication date |
|---|---|
| CN102352225B (en) | 2013-05-22 |
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