CN207863920U - Multistage pressure-bearing type osmosis type hole sealing device - Google Patents
Multistage pressure-bearing type osmosis type hole sealing device Download PDFInfo
- Publication number
- CN207863920U CN207863920U CN201820035614.7U CN201820035614U CN207863920U CN 207863920 U CN207863920 U CN 207863920U CN 201820035614 U CN201820035614 U CN 201820035614U CN 207863920 U CN207863920 U CN 207863920U
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- CN
- China
- Prior art keywords
- pouch
- sealing device
- hole sealing
- sealing
- multistage pressure
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- Expired - Fee Related
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Abstract
The utility model is related to a kind of multistage pressure-bearing type osmosis type hole sealing devices, including the multiple pouches being sheathed on main pipe, and spacing is installed between each pouch；The main pipe is equipped with the Grouting Pipe penetrated through with each pouch, and position of the Grouting Pipe between each pouch is equipped with explosive valve；The pouch includes positioned at the seal section at both ends and positioned at intermediate infiltration section.The utility model can improve grouting pressure on the basis of the stifled note method for sealing of tradition two, to improve sealing quality, solve the problems, such as that coal mine gas drainage concentration is low, realize the gas pumping of mine extraction borehole high concentration high quality.
Description
Technical field
The utility model belongs to technical field of coal exploitation more particularly to a kind of multistage pressure-bearing type osmosis type hole sealing device.
Background technology
Sealing quality when coal mine gas drainage determines the extraction degree of gas.With advances in technology, at present gradually
Using " a two stifled notes " method of pore sealing, concrete principle is：First blocked after the both ends of sealing of hole sections are expanded with pouch slip casting, then
Slip casting is carried out by drilling section of the Grouting Pipe between the pouch block section of both ends, under the action of grouting pressure, slurries are to drilling
Wall permeates and fills drilling surrounding crack.
The advantages of " a two stifled notes " grouting method with pressure is to realize the wall of a borehole slip casting, supporting drilling after slurry consolidation, from
Theoretically, if grouting pressure is sufficiently large, slurries are blocked under the action of expansive force into the wall of a borehole crack, after solidification
The expansive force of injecting paste material can make to form the region of high stress around drilling and sealing section close to crustal stress, it is logical to reduce gas leakage
Road improves the seal of sealing of hole sections.
So grouting pressure determines the quality of injection hole sealing.But traditional " a two stifled notes " method for sealing is due to both ends
With pouch sealing of hole, the frictional resistance for only relying on pouch and borehole sidewall is blocked, and intensity is relatively low, and pouch is deposited with borehole sidewall
In gap leakage, thus larger grouting pressure can not be supported.Above-mentioned reason limits " a two stifled notes " method and further increases envelope
Hole quality.
Utility model content
In order to improve the sealing quality of coal mine gas drainage measure, reduce due to mine coal caused by gas pumping deficiency with
The generation of the accidents such as Gas Outburst, the utility model provide the utility model and provide a kind of multistage pressure-bearing type osmosis type sealing of hole
Device, concrete scheme are：
A kind of multistage pressure-bearing type osmosis type hole sealing device, including multiple pouches for being sheathed on main pipe, between each pouch
It is installed with spacing；The main pipe is equipped with the Grouting Pipe penetrated through with each pouch, position of the Grouting Pipe between each pouch
It is equipped with explosive valve；The pouch includes positioned at the seal section at both ends and positioned at intermediate infiltration section.
Further, the pouch includes the osmosis type bag body positioned at internal layer, is covered at the both ends of osmosis type bag body close
Sealing.
Further, there are two the pouches.
Further, the total length of the pouch is 0.8 ~ 1.2m, and the length for being located at intermediate infiltration section is 0.3 ~ 0.5m.
The hole sealing device is redesigned by the structure to conventional pouch, on the basis of conventional pouch among increase
Section is permeated, makes pouch that both there is original expansion plugging effect, while there is osmosis.Pass through the material to osmosis type bag body
Selection, can control its osmotic pressure, the limit of Grouting Pipe explosive valve between the osmotic pressure of pouch is higher or lower than pouch
When pressure, the claimed multistage pressure-bearing type osmosis type method for sealing of the utility model both may be implemented.
The utility model can solve the problems, such as that coal mine gas drainage concentration is low, realize that mine extraction borehole high concentration is high-quality
The gas pumping of amount promotes coal seam number to be utilized with the comprehensive mining of trillion tons of coal bed gas, ensures that safety of coal mines is efficiently exploited, real
The Production trend of existing coal and gas power phenomenon.For the easy collapse hole of three-soft seam, the features such as coal body is soft, poor air permeability, improve tradition
A two stifled note hole-sealing technology shortcoming and defect can effectively improve coal mine gas pumping using multistage pressure-bearing type injection hole sealing technology
Effect is adopted, extraction reaching standard time is shortened, ensures safety in production.
Description of the drawings
Fig. 1 is the structural schematic diagram of hole sealing device in the utility model.
Specific implementation mode
As shown in Figure 1, a kind of multistage pressure-bearing type osmosis type hole sealing device, including two pouches being sheathed on main pipe 1
2, the spacing between two pouches is determined according to the length of sealing of hole sections；Main pipe 1 is equipped with the slip casting penetrated through with each pouch
Pipe 4, position of the Grouting Pipe 4 between two pouches are equipped with explosive valve 3；Pouch 2 includes in being located at the seal section at both ends and being located at
Between infiltration section.The pouch 2 includes the osmosis type bag body 2a positioned at internal layer, and sealing is covered at the both ends of osmosis type bag body 2a
Layer 2b, is seal section by the position that sealant 2b is covered, and unlapped position is infiltration section.According to practical effect, pouch 2
Total length be preferably 0.8 ~ 1.2m, the length positioned at intermediate infiltration section is preferably 0.3 ~ 0.5m.
When in use, by Grouting Pipe to carrying out slip casting in pouch, when pressure is less than the osmotic pressure of osmosis type bag body,
The pouch bulk expansion plays the pre- plugging action in tradition " a two stifled notes " method of pore sealing.In the present embodiment, osmosis type bag body is adopted
With canvas material, rubber material can be used in sealant, and osmotic pressure is controlled in 1.3MPa or so, the limit of Grouting Pipe explosive valve
Pressure is set as 0.9MPa or so.When grouting pressure reaches 0.9MPa or more, explosive valve is first turned on, and is first carried out among two pouches
Slip casting, when pressure reaches 1.3MPa or more, the infiltration section of pouch starts to permeate slurries, plays the effect of infiltration sealing of hole, enhancing
The plugging effect at both ends, it is ensured that the main infiltration section among two pouches is continued to improve grouting pressure.
Claims (4)
1. a kind of multistage pressure-bearing type osmosis type hole sealing device, it is characterised in that：Including the multiple pouches being sheathed on main pipe, respectively
Spacing is installed between pouch；The main pipe is equipped with the Grouting Pipe that is penetrated through with each pouch, the Grouting Pipe each pouch it
Between position be equipped with explosive valve；The pouch includes positioned at the seal section at both ends and positioned at intermediate infiltration section.
2. multistage pressure-bearing type osmosis type hole sealing device according to claim 1, it is characterised in that：The pouch includes being located at
The osmosis type bag body of internal layer is covered with sealant at the both ends of osmosis type bag body.
3. multistage pressure-bearing type osmosis type hole sealing device according to claim 1 or 2, it is characterised in that：The pouch has two
It is a.
4. multistage pressure-bearing type osmosis type hole sealing device according to claim 3, it is characterised in that：The total length of the pouch
For 0.8 ~ 1.2m, the length for being located at intermediate infiltration section is 0.3 ~ 0.5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820035614.7U CN207863920U (en) | 2018-01-10 | 2018-01-10 | Multistage pressure-bearing type osmosis type hole sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820035614.7U CN207863920U (en) | 2018-01-10 | 2018-01-10 | Multistage pressure-bearing type osmosis type hole sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207863920U true CN207863920U (en) | 2018-09-14 |
Family
ID=63461309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820035614.7U Expired - Fee Related CN207863920U (en) | 2018-01-10 | 2018-01-10 | Multistage pressure-bearing type osmosis type hole sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207863920U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939333A (en) * | 2018-01-10 | 2018-04-20 | 河南理工大学 | Multistage pressure-bearing type osmosis type method for sealing and device |
| CN111456680A (en) * | 2020-04-21 | 2020-07-28 | 上海长凯岩土工程有限公司 | Self-sealing type grouting and well sealing device |
| CN111579282A (en) * | 2020-05-28 | 2020-08-25 | 安徽理工大学 | In-situ detection method for primary CO in coal bed |
| CN114922188A (en) * | 2022-06-16 | 2022-08-19 | 上海同人里岩土工程技术有限公司 | Grouting device and post-grouting construction method for pile end |
-
2018
- 2018-01-10 CN CN201820035614.7U patent/CN207863920U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939333A (en) * | 2018-01-10 | 2018-04-20 | 河南理工大学 | Multistage pressure-bearing type osmosis type method for sealing and device |
| CN111456680A (en) * | 2020-04-21 | 2020-07-28 | 上海长凯岩土工程有限公司 | Self-sealing type grouting and well sealing device |
| CN111579282A (en) * | 2020-05-28 | 2020-08-25 | 安徽理工大学 | In-situ detection method for primary CO in coal bed |
| CN114922188A (en) * | 2022-06-16 | 2022-08-19 | 上海同人里岩土工程技术有限公司 | Grouting device and post-grouting construction method for pile end |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180914 Termination date: 20190110 |