CN207905824U - A kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction - Google Patents
A kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction Download PDFInfo
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- CN207905824U CN207905824U CN201820313974.9U CN201820313974U CN207905824U CN 207905824 U CN207905824 U CN 207905824U CN 201820313974 U CN201820313974 U CN 201820313974U CN 207905824 U CN207905824 U CN 207905824U
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- valve tube
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Abstract
The utility model discloses a kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction, including slip casting drilling rod, shaft grouting stop-valve, shaft slurry outlet, grouting valve tube body, only starch air bag, Grouting Pipe, air-inflating tube and grouting gun, the slip casting drilling rod is equipped with shaft slurry outlet, shaft grouting stop-valve is provided on shaft slurry outlet, grouting valve tube body is provided in slip casting drilling rod, it is provided on the grouting valve tube body and only starches air bag, only slurry air bag is wrapped in one entirety of formation on grouting valve tube body, it starches valve tube body front and connects grouting gun, tail portion connects Grouting Pipe, only slurry air bag connects air-inflating tube；The air bag grouting stop-valve tube assembly is remarkably improved slip casting efficiency, compared with current existing grouting valve pipe product, the component has higher slurry-outlet velocity and pulp pressure, wider array of slip casting radius, more closely knit slurries filling effect and better slurries non-return performance under identical grouting pressure, can effectively prevent the plugging phenomenon because caused by using quick setting early strength slurries.
Description
Technical field
The utility model is related to the engineerings slip casting fields such as tunnels and underground engineering, side slope protection improvement, foundation stabilization, specifically
For be it is a kind of convenient for bored grouting construction air bag grouting stop-valve tube assembly.
Background technology
Soletancle-3 slip casting construction methods are since the 1950s is by invention, since its delamination pour slurry is controllable and can be compared with
It good control grouting pressure and is widely adopted the advantages of grout mixing, domestic will be studied after engineering method introduction changes
It makes, forms current sleeve valve barrel grouting engineering method.
By engineering practice demonstration for many years, it is found that sleeve valve barrel grouting method has the following problems：(1) during slip casting,
With the increase of mini-valve tube front slurry pressure, the lower PVC of bend resistance rigidity only starches bowl and easily reversely bends, and it is existing spillage occur
As being reduced so as to cause mini-valve tube front grouting pressure, slip casting not exclusively even Grouting Pipe is scrapped；(2) due to only starching bowl easily
Reversed bending, existing mini-valve tube engineering method must control pulp pressure, the small speed of pulp pressure cause slowly slip casting radius reduce and when
Between it is longer, slurry fluidity reduce even solidify, eventually cause plugging phenomenon, seriously reduce construction efficiency；(3) drilling rod trepanning is not
Has a check function, slurry reflux after the completion of mortar depositing construction, slip casting effect is had a greatly reduced quality.
Invention content
The purpose of the utility model is to overcome above-mentioned defects existing in the prior art, provide a kind of convenient for bored grouting
The air bag grouting stop-valve tube assembly of construction, the component shorten the slip casting time, improve slip casting efficiency, and injection speed is fast, slip casting half
Diameter is big, slip casting effect is closely knit, only slurry effect is outstanding, can effectively prevent the plugging phenomenon because caused by using quick setting early strength slurries.
To achieve the goals above, the technology contents of the utility model are：
A kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction, including slip casting drilling rod, shaft grouting stop-valve, shaft go out
Hole, grouting valve tube body, only slurry air bag, Grouting Pipe, air-inflating tube and grouting gun are starched, the slip casting drilling rod is equipped with shaft pulp
Hole is provided with shaft grouting stop-valve on shaft slurry outlet, grouting valve tube body, the grouting valve tube body is provided in slip casting drilling rod
On be provided with and only starch air bag, only starch air bag and be wrapped in one entirety of formation on grouting valve tube body, the connection of slurry valve tube body front
Grouting gun, tail portion connect Grouting Pipe, only starch air bag and connect air-inflating tube.
Optimal technical scheme as the utility model：
The slip casting drilling rod can be that all well cementing equipments such as pipe canopy drilling rod, hollow grouting anchor or hollow conduit are set
Standby and structure.
The shaft slurry outlet, aperture are 8 ~ 10mm, and longitudinally adjacent pitch-row is 400 ~ 600mm.The aperture of shaft slurry outlet
It is not limited to the range with longitudinally adjacent pitch-row, should include the size range that all meet engineering demand, according to practical work
Journey situation adjusts, and Adjustment principle is to should not be too large or too small.Pulp bore dia is excessive, can increase corresponding mating unidirectional only slurry
The cost of valve simultaneously reduces slip casting radius, and slurry outlet is too small, can reduce slurry-outlet velocity, influences slip casting efficiency；Adjacent holes away from excessive,
Slip casting segmentation is reduced, and the segmental averaging slip casting time increases, and effect can not ensure, away from too small, slip casting segmentation increases adjacent holes, increases
Difficulty of construction.
The shaft grouting stop-valve is one-way check valve arrangement, and slurries only flow out, can not reverse backflow.
The shaft grouting stop-valve is mounted in shaft slurry outlet, and the two size matches, and shaft grouting stop-valve diameter is slightly less than
Shaft slurry outlet, to install.
The grouting valve tube body is made by steel, alloy or high strength plastics.
The grouting valve tube body matches with slip casting drilling rod, grouting valve tube body outer diameter be less than slip casting drilling rod internal diameter 20 ~
30mm.By taking the tube shed grouting of φ 102 as an example, if gap is less than 20mm, difficulty of construction can be increased, be not easy operation；If gap
More than 30mm, then valve tube body is too small, seriously affects slurry-outlet velocity and slip casting efficiency, relatively low when using quick setting early strength slurries
Slurry-outlet velocity can cause plugging phenomenon to be aggravated.
The only slurry air bag material is that the high resiliency such as nylon, rubber, polyester, polyurethane or more the composite material of material are high
Intensity material.
In the technical solution of the utility model, extraneous air is driven into only slurry air bag via air-inflating tube using air pump and is worked as
In, air bag expansion is only starched, the gap compacting between valve tube body and drilling rod is compacted, slurries are beaten by Grouting Pipe using high-pressure pump
Enter into drilling rod, only slurry air bag block effect under cannot return slurry, the slurry pressure in slip casting drilling rod is constantly risen, when
When pressure is sufficiently large, internal slurries break through the closure indentation target reinforcing body of shaft grouting stop-valve, and shaft grouting stop-valve is one-way check
Structure, slurries realize the uniform closely knit reinforcing to stratum via grouting stop-valve only export but no import.The air bag grouting stop-valve tube assembly can be shown
Write and improve slip casting efficiency, compared with current existing grouting valve pipe product, the component have under identical grouting pressure it is higher go out
Speed and pulp pressure, wider array of slip casting radius, more closely knit slurries filling effect and better slurries non-return performance are starched, it can
It effectively prevent the plugging phenomenon because caused by using quick setting early strength slurries.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is that the utility model stops the principle schematic for starching air bag.
Fig. 3 is the structural schematic diagram of the unidirectional grouting stop-valve of the utility model.
Fig. 4 is the only slurry functional schematic of the unidirectional grouting stop-valve of the utility model.
Fig. 5 is the mortar depositing construction flow diagram using the utility model.
It is marked in figure：1- slip castings drilling rod, 2- shafts grouting stop-valve, 3- shafts slurry outlet, 4- grouting valves tube body, 5- only starch gas
Capsule, 6- Grouting Pipes, 7- air-inflating tubes, 8- grouting guns.
Specific implementation mode
The embodiment of the utility model is further elaborated in 1-5 below in conjunction with the accompanying drawings.
A kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction of the utility model, as shown in Figure 1, being bored including slip casting
Bar 1 and air bag grouting valve tube body 4.1 shaft of slip casting drilling rod is equipped with slurry outlet 3 and unidirectional grouting stop-valve 2；Air bag grouting valve pipe sheet
4 front end of body is slip casting muzzle 8, and pipe shaft is wrapped up by only slurry air bag 5, and tail portion is connected with Grouting Pipe 6 and air bag air-inflating tube 7.
Before slip casting, enough outside airs is squeezed by air-inflating tube 7 only starch in air bag 5 first, make its high compression swelling,
The gap between drilling rod and valve tube body is filled, realizes the function of efficiently blocking slurries, as shown in Figure 2.
The slurries of high pressure injection are constantly accumulated in drilling rod front, and pressure is constantly increased in bar, when pressure is sufficiently large,
Slurries break through unidirectional grouting stop-valve 2, and high speed is pressed into target reinforcing body, realizes the reinforcing to stratum.Unidirectional grouting stop-valve 2 is a kind of and is permitted
Slurries flow out, mustn't slurry reflux backstop structure, structure is as shown in figure 3, its unidirectional only slurry function is as shown in Figure 4.
When practice of construction, positioning measured to drilling first, then after slip casting drilling rod 1 is squeezed into predetermined hole position and sealing,
The grouting valve tube body 4 that package is only starched to air bag 5 is pushed into 1 front end of slip casting drilling rod, is inflated to only slurry air bag 5, waits for that it reaches
When gap between enough pressure and compacted valve pipe and drilling, by slurries configure progress slip casting operation, startup high-pressure grout injector,
Grouting pressure 2.5MPa carries out the first segmenting slip casting reinforcing, after the completion of slip casting, excludes the air in air bag, valve pipe is pulled out backward
Go out, prepares subsequent cycle, mortar depositing construction flow such as Fig. 5.
Claims (8)
1. a kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction, which is characterized in that including slip casting drilling rod (1), shaft
Grouting stop-valve (2), shaft slurry outlet (3), grouting valve tube body (4), only slurry air bag (5), Grouting Pipe (6), air-inflating tube (7) and slip casting
Rifle (8), the slip casting drilling rod (1) are equipped with shaft slurry outlet (3), shaft grouting stop-valve (2) are provided on shaft slurry outlet (3),
It is provided with grouting valve tube body (4) in slip casting drilling rod (1), only slurry air bag (5), slurry are provided on the grouting valve tube body (4)
Valve tube body (4) front connects grouting gun（8）, tail portion connects Grouting Pipe (6), only starches air bag (5) and connect air-inflating tube (7).
2. a kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction according to claim 1, which is characterized in that institute
It is pipe canopy drilling rod, hollow grouting anchor or hollow conduit to state slip casting drilling rod (1).
3. a kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction according to claim 1, which is characterized in that institute
Shaft slurry outlet (3) is stated, aperture is 8 ~ 10mm, and longitudinally adjacent pitch-row is 400 ~ 600mm.
4. a kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction according to claim 1, which is characterized in that institute
It is one-way check valve arrangement to state shaft grouting stop-valve (2), and slurries only flow out, can not reverse backflow.
5. a kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction according to claim 1, which is characterized in that institute
Shaft grouting stop-valve (2) is stated in shaft slurry outlet (3), the two size matches, shaft grouting stop-valve（2）Diameter is slightly less than bar
Body slurry outlet（3）.
6. a kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction according to claim 1, which is characterized in that institute
Grouting valve tube body (4) is stated to be made by steel, alloy or high strength plastics.
7. a kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction according to claim 1, which is characterized in that institute
It states grouting valve tube body (4) with slip casting drilling rod (1) to match, grouting valve tube body（4）Outer diameter is less than slip casting drilling rod（1）Internal diameter 20
~30mm。
8. a kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction according to claim 1, which is characterized in that institute
State only slurry air bag (5）Material is the composite material of nylon, rubber, polyester, polyurethane or more material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820313974.9U CN207905824U (en) | 2018-03-07 | 2018-03-07 | A kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820313974.9U CN207905824U (en) | 2018-03-07 | 2018-03-07 | A kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction |
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| CN207905824U true CN207905824U (en) | 2018-09-25 |
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| CN201820313974.9U Active CN207905824U (en) | 2018-03-07 | 2018-03-07 | A kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180024A (en) * | 2018-03-07 | 2018-06-19 | 中铁二院昆明勘察设计研究院有限责任公司 | A kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction |
| CN110984904A (en) * | 2019-10-29 | 2020-04-10 | 东北大学 | Air pressure type separation high-pressure liquid injection device and method for complex fractured rock mass |
| CN116291396A (en) * | 2023-04-07 | 2023-06-23 | 徐州中矿岩土技术股份有限公司 | Method for monitoring goaf slurry migration and condensation in drilled holes in real time |
-
2018
- 2018-03-07 CN CN201820313974.9U patent/CN207905824U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180024A (en) * | 2018-03-07 | 2018-06-19 | 中铁二院昆明勘察设计研究院有限责任公司 | A kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction |
| CN110984904A (en) * | 2019-10-29 | 2020-04-10 | 东北大学 | Air pressure type separation high-pressure liquid injection device and method for complex fractured rock mass |
| CN110984904B (en) * | 2019-10-29 | 2021-06-18 | 东北大学 | Air pressure type separation high-pressure liquid injection device and method for complex fractured rock mass |
| CN116291396A (en) * | 2023-04-07 | 2023-06-23 | 徐州中矿岩土技术股份有限公司 | Method for monitoring goaf slurry migration and condensation in drilled holes in real time |
| CN116291396B (en) * | 2023-04-07 | 2023-10-20 | 徐州中矿岩土技术股份有限公司 | Method for monitoring goaf slurry migration and condensation in drilled holes in real time |
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