CN103775024A - Fine coal slurry hole sealing method - Google Patents
Fine coal slurry hole sealing method Download PDFInfo
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- CN103775024A CN103775024A CN201410051169.XA CN201410051169A CN103775024A CN 103775024 A CN103775024 A CN 103775024A CN 201410051169 A CN201410051169 A CN 201410051169A CN 103775024 A CN103775024 A CN 103775024A
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- duff
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- grouting
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- hole sealing
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Abstract
The invention discloses a fine coal slurry hole sealing method. The method comprises the following steps: firstly, adding the following components in percentage by weight into a stirrer: 60 to 70 percent of fine coal power, 25 to 35 percent of cement and 4 to 6 percent of white emulsion, and then adding water for continuous stirring, so as to enable water and fine coal to be mixed according to the ratio of 0.3 to 05; then, using a grouting pump to transport and press fine coal slurry into a grouting opening of a grouting hole sealing device. According to the invention, the fine coal slurry is used for replacing cement slurry to seal holes, the coal slurry and a coal body are combined tightly, no shrinkage is achieved, and pollutions to the coal body can be avoided. The fine coal power is used as a hole sealing material, materials can be obtained from local sources, exploitation cost is lowered, the distribution is simple and convenient, and times of tests show that the hole sealing effect is very good. Too much residual of sundries such as cement, sandstone and the like after coal layer mining can be prevented, the mining purity is high, the mining efficiency is high, and the fine coal slurry hole sealing method is very suitable for promotion and implementation.
Description
Technical field
The present invention relates to the hole sealing technology in the technical field of colliery, be specifically related to a kind of duff slurry method for sealing.
Background technology
Along with the high speed development of coal industry and coal production mechanization, dust hazard problem in coal production is still severe, and the sick incidence of disease of coal worker's pneumoconiosis is higher, and coal-dust explosion happens occasionally, Gas Outburst is a kind of serious natural calamity under coal mine, seriously restricts the safety in production in colliery.The coal mining process need of standard is first to Gas Drainage from Virgin Coal Seams, and because coal seam is buried underground, between coal seam, pressure is large, need to after the punching of coal seam, insert gas pumping pipe, and depths, coal seam methane gas is extracted out.The process need that draws out methane seals releasing pipe, and traditional short-cut method is directly to adopt cement mortar sealing of hole, gas pumping pipe is inserted to sealing of hole section bottom timber wedge or the cotton yarn of boring and blocks then by cementing.Just can hand gas after Behavior of Hardened Cement Paste slurry solidifies.By the cement mortar sealing of hole water filling length that expends time in, sealing effectiveness is not good enough, bears air pressure indifferent, and consume material is many, inconvenient operation.
In addition, existing utilize cement paste and coal body joint portion tight, after cement paste solidifies, have minimal shrink, sealing effectiveness is poor, also can pollute coal body, cause coal ash increase.
Summary of the invention
The object of the invention is the problem and shortage existing for prior art, a kind of multistage pouch hole packer that can effectively prevent spray orifice is provided.
For achieving the above object, adopt following technical scheme: a kind of duff slurry method for sealing, first, and to adding following percentage by weight composition in agitator: fine breeze 60～70%, cement 25～35%, white glue with vinyl 4～6%, duff compound is made in stirring; Add water to continue to stir, making water and duff compound ratio is 0.3～0.5 again; Then, utilize grouting pump that duff slurry is carried to the grouting port that is pressed into injection hole sealing device, described injection hole sealing device comprises gas pumping pipe and forward and backward pouch and Grouting Pipe, pouch before and after being fixed with respectively before and after the body of gas pumping pipe, in each pouch, run through and be connected with Grouting Pipe, described Grouting Pipe is communicated with pouch inner chamber by arm, and on arm, one way valve is installed; On the slip casting tube wall between adjacent two pouches, be provided with explosive valve.The each composition percentage by weight of described duff compound is preferred: fine breeze 65～70%, and cement 27～30%, white glue with vinyl 5～6%, further preferred: fine breeze 68%, cement 27%, white glue with vinyl 5%.Water and duff compound ratio are 0.4.In each pouch outside, a constraint lasso is at least set.Described gas pumping pipe inner terminal is provided with gas collecting segment, is distributed with bar shaped or circular air-vent on this gas collecting segment.
Another kind of duff slurry method for sealing, first, to adding following percentage by weight composition in agitator: fine breeze 80～92%, white glue with vinyl 8～20%, duff compound is made in stirring; Add water to continue to stir, making water and duff compound ratio is 0.3～0.5 again; Duff slurry is made in stirring; Then, utilize grouting pump that duff slurry is carried to the grouting port that is pressed into injection hole sealing device, described injection hole sealing device comprises gas pumping pipe and forward and backward pouch and Grouting Pipe, pouch before and after being fixed with respectively before and after the body of gas pumping pipe, in each pouch, run through and be connected with Grouting Pipe, described Grouting Pipe is communicated with pouch inner chamber by arm, and on arm, one way valve is installed; On the slip casting tube wall between adjacent two pouches, be provided with explosive valve.The each composition percentage by weight of described duff compound is preferred: fine breeze 90%, white glue with vinyl 10%.
Beneficial effect: the present invention utilizes duff slurry to replace cement paste, carries out sealing of hole, and coal slurry is combined with coal body closely, without shrinking, coal body is not polluted.Fine breeze, as sealing material, can be gathered materials on the spot, and reduces cost of winning, allocates simple and conveniently, determines that sealing of hole effect is very good through test of many times.And can residual too many cement sandstone after working seam etc. foreign material, exploitation purity is high, production efficiency is high, is applicable to very much promotion and implementation.
Accompanying drawing explanation
Fig. 1 is surface structure schematic diagram of the present invention;
Fig. 2 is the cross-sectional view of Fig. 1.
Number in the figure 1 is gas pumping pipe, and 2 is pouch, and 3 is constraint lasso, and 4 is Grouting Pipe, and 5 is explosive valve, and 6 is gas collecting segment, and 7 is one way valve, and 8 is agitator, and 9 is grouting pump, and 10 is valve.
the specific embodiment
Embodiment 1: a kind of duff slurry method for sealing, first configures raw material: to adding following percentage by weight composition in the agitator 8 in Fig. 1: fine breeze 60～70%, cement 25～35%, white glue with vinyl 4～6%, duff compound is made in stirring; Add water to continue to stir, making water and duff compound ratio is 0.3～0.5 again.
Secondly,, as Fig. 1 and Fig. 2, utilize grouting pump that duff slurry is carried to the grouting port that is pressed into injection hole sealing device.On the body of gas pumping pipe 1, be fixed with successively forward and backward pouch 2, between the pouch 2 at gas pumping pipe 1 two ends, be divided into mutually 3m ~ 15m spacing.In each pouch 2, run through and be connected with Grouting Pipe 4, described Grouting Pipe 4 is communicated with pouch 2 inner chambers by arm, and one way valve 7 is installed on arm, and Grouting Pipe 4 end fixing seals are in the pouch 2 of rear side; On the slip casting tube wall between adjacent two pouches 2, be provided with explosive valve 5; Two binding constraint lassos 3 of each suit in each pouch 2 outsides.Explosive valve 5 on slip casting tube wall between adjacent two pouches 2, explosion at once when grouting pressure is increased to 0.5MPa, after two explosive valve 5 explosions in the middle of gear, the space before and after slurries enter between pouch 2, sealing of hole pressurizes.In addition, gas pumping pipe 4 inner terminals are provided with gas collecting segment 6, are distributed with bar shaped or circular air-vent on this gas collecting segment 6.
Embodiment 2: content is substantially the same manner as Example 1, something in common does not repeat, different: the each composition percentage by weight of duff compound: fine breeze 65～70%, cement 27～30%, white glue with vinyl 5～6%.Add water to continue to stir, making water and duff compound ratio is 0.4～0.5 again.
Embodiment 3: content is substantially the same manner as Example 2, something in common does not repeat, different: fine breeze 68%, cement 27%, white glue with vinyl 5%.Add water to continue to stir, making water and duff compound ratio is 0.4 again.
Embodiment 4: another kind of duff slurry method for sealing, first, and to adding following percentage by weight composition in agitator: fine breeze 80～92%, white glue with vinyl 8～20%, duff compound is made in stirring; Add water to continue to stir, making water and duff compound ratio is 0.3～0.5 again; Duff slurry is made in stirring; Then, utilize grouting pump that duff slurry is carried to the grouting port that is pressed into injection hole sealing device, described injection hole sealing device comprises gas pumping pipe and forward and backward pouch and Grouting Pipe, pouch before and after being fixed with respectively before and after the body of gas pumping pipe, in each pouch, run through and be connected with Grouting Pipe, described Grouting Pipe is communicated with pouch inner chamber by arm, and on arm, one way valve is installed; On the slip casting tube wall between adjacent two pouches, be provided with explosive valve.
Embodiment 5: content is substantially the same manner as Example 4, something in common does not repeat, different: the each composition percentage by weight of duff compound is preferred: fine breeze 90%, white glue with vinyl 10%.Add water to continue to stir, making water and duff compound ratio is 0.4 again.
Claims (10)
1. a duff slurry method for sealing, is characterized in that: first, to adding following percentage by weight composition in agitator: fine breeze 60～70%, cement 25～35%, white glue with vinyl 4～6%, duff compound is made in stirring; Add water to continue to stir, making water and duff compound ratio is 0.3～0.5 again; Then, utilize grouting pump that duff slurry is carried to the grouting port that is pressed into injection hole sealing device, described injection hole sealing device comprises gas pumping pipe and forward and backward pouch and Grouting Pipe, pouch before and after being fixed with respectively before and after the body of gas pumping pipe, in each pouch, run through and be connected with Grouting Pipe, described Grouting Pipe is communicated with pouch inner chamber by arm, and on arm, one way valve is installed; On the slip casting tube wall between adjacent two pouches, be provided with explosive valve.
2. duff slurry method for sealing according to claim 1, is characterized in that: the each composition percentage by weight of described duff compound is: fine breeze 65～70%, cement 27～30%, white glue with vinyl 5～6%.
3. duff slurry method for sealing according to claim 2, is characterized in that: the each composition percentage by weight of described duff compound is: fine breeze 68%, cement 27%, white glue with vinyl 5%.
4. according to the duff slurry method for sealing described in claim 1-3 any one, it is characterized in that: water and duff compound ratio are 0.4.
5. duff slurry method for sealing according to claim 1, is characterized in that: in each pouch outside, a constraint lasso is at least set.
6. duff slurry method for sealing according to claim 1, is characterized in that: described gas pumping pipe inner terminal is provided with gas collecting segment, is distributed with bar shaped or circular air-vent on this gas collecting segment.
7. a duff slurry method for sealing, is characterized in that: first, to adding following percentage by weight composition in agitator: fine breeze 80～92%, white glue with vinyl 8～20%, duff compound is made in stirring; Add water to continue to stir, making water and duff compound ratio is 0.3～0.5 again; Duff slurry is made in stirring; Then, utilize grouting pump that duff slurry is carried to the grouting port that is pressed into injection hole sealing device, described injection hole sealing device comprises gas pumping pipe and forward and backward pouch and Grouting Pipe, pouch before and after being fixed with respectively before and after the body of gas pumping pipe, in each pouch, run through and be connected with Grouting Pipe, described Grouting Pipe is communicated with pouch inner chamber by arm, and on arm, one way valve is installed; On the slip casting tube wall between adjacent two pouches, be provided with explosive valve.
8. duff slurry method for sealing according to claim 7, is characterized in that: the each composition percentage by weight of described duff compound is preferred: fine breeze 90%, white glue with vinyl 10%.
9. according to the duff slurry method for sealing described in claim 7 or 8, it is characterized in that: water and duff compound ratio are 0.4.
10. duff slurry method for sealing according to claim 7, is characterized in that: in each pouch outside, a constraint lasso is at least set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051169.XA CN103775024B (en) | 2014-02-14 | 2014-02-14 | Duff slurry method for sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051169.XA CN103775024B (en) | 2014-02-14 | 2014-02-14 | Duff slurry method for sealing |
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| CN103775024A true CN103775024A (en) | 2014-05-07 |
| CN103775024B CN103775024B (en) | 2017-01-04 |
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| CN201410051169.XA Expired - Fee Related CN103775024B (en) | 2014-02-14 | 2014-02-14 | Duff slurry method for sealing |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018806A (en) * | 2014-05-24 | 2014-09-03 | 安徽淮河化工股份有限公司 | B type constant pressure explosion valve device for coal mine gas pumping-discharging hole slurry grouting pocket hole sealing machine |
| CN104863542A (en) * | 2015-06-03 | 2015-08-26 | 中国矿业大学 | Approximately horizontal gas drainage hole drilling cutting and pocket combined hole sealing method |
| CN105003224A (en) * | 2015-07-23 | 2015-10-28 | 江苏中煤矿山设备有限公司 | Two-section type hole packer and core drilling process of two-section type hole packer |
| CN106437611A (en) * | 2016-10-24 | 2017-02-22 | 河南理工大学 | Method and device for prefabricated pipeline pressurized grouting hole sealing inside gas extraction drill hole |
| CN107011881A (en) * | 2017-05-24 | 2017-08-04 | 河南理工大学 | A kind of mining ickings base hole-sealing grouting material and prepare hole-sealing technology |
| CN107473641A (en) * | 2017-08-21 | 2017-12-15 | 安徽省康宇水电机械成套设备有限公司 | A kind of revetment brick dedicated water mud |
| CN110608012A (en) * | 2019-08-30 | 2019-12-24 | 贵州大学 | Gas hole packer with pressure relief function |
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| US4093310A (en) * | 1977-03-07 | 1978-06-06 | In Situ Technology, Inc. | Sealing an underground coal deposit for in situ production |
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-
2014
- 2014-02-14 CN CN201410051169.XA patent/CN103775024B/en not_active Expired - Fee Related
Patent Citations (6)
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| US4093310A (en) * | 1977-03-07 | 1978-06-06 | In Situ Technology, Inc. | Sealing an underground coal deposit for in situ production |
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| 田照军等: "《水泥-粉煤灰注浆加固巷道技术》", 《煤矿开采》, no. 43, 30 April 2001 (2001-04-30), pages 50 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018806A (en) * | 2014-05-24 | 2014-09-03 | 安徽淮河化工股份有限公司 | B type constant pressure explosion valve device for coal mine gas pumping-discharging hole slurry grouting pocket hole sealing machine |
| CN104863542A (en) * | 2015-06-03 | 2015-08-26 | 中国矿业大学 | Approximately horizontal gas drainage hole drilling cutting and pocket combined hole sealing method |
| CN105003224A (en) * | 2015-07-23 | 2015-10-28 | 江苏中煤矿山设备有限公司 | Two-section type hole packer and core drilling process of two-section type hole packer |
| CN105003224B (en) * | 2015-07-23 | 2017-12-29 | 郑州煤电股份有限公司告成煤矿 | Two-part hole packer and its boring and coring process |
| CN106437611A (en) * | 2016-10-24 | 2017-02-22 | 河南理工大学 | Method and device for prefabricated pipeline pressurized grouting hole sealing inside gas extraction drill hole |
| CN106437611B (en) * | 2016-10-24 | 2018-12-04 | 河南理工大学 | Prefabricated pipeline grouting with pressure method for sealing and device in mash gas pumping drilling hole |
| CN107011881A (en) * | 2017-05-24 | 2017-08-04 | 河南理工大学 | A kind of mining ickings base hole-sealing grouting material and prepare hole-sealing technology |
| CN107473641A (en) * | 2017-08-21 | 2017-12-15 | 安徽省康宇水电机械成套设备有限公司 | A kind of revetment brick dedicated water mud |
| CN110608012A (en) * | 2019-08-30 | 2019-12-24 | 贵州大学 | Gas hole packer with pressure relief function |
| CN110608012B (en) * | 2019-08-30 | 2021-11-12 | 贵州大学 | Gas hole packer with pressure relief function |
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| CN103775024B (en) | 2017-01-04 |
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Granted publication date: 20170104 Termination date: 20210214 |