CN217480186U - Prestressed anchor cable for preventing seepage by using mould bag - Google Patents
Prestressed anchor cable for preventing seepage by using mould bag Download PDFInfo
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- CN217480186U CN217480186U CN202220964611.8U CN202220964611U CN217480186U CN 217480186 U CN217480186 U CN 217480186U CN 202220964611 U CN202220964611 U CN 202220964611U CN 217480186 U CN217480186 U CN 217480186U
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- seepage
- anchor cable
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- mold bag
- grouting pipe
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Abstract
The utility model discloses a prestressed anchor cable for preventing seepage by utilizing a mould bag, which comprises an anchor cable main body, wherein a first grouting pipe and a second grouting pipe are fixed on the anchor cable main body side by side, the lower end of the first grouting pipe is opened, and the lower end of the second grouting pipe is sealed; the upper end of the anchor cable main body is sleeved with a first anti-seepage mold bag and a second anti-seepage mold bag respectively, and the first anti-seepage mold bag is positioned below the second anti-seepage mold bag; the first grouting pipe penetrates through the first seepage-proofing mold bag and the second seepage-proofing mold bag, a plurality of first grout outlet holes are longitudinally distributed on the first grouting pipe positioned in the first seepage-proofing mold bag, and a packer is arranged in the first grouting pipe positioned below the first grout outlet holes and is positioned in the first seepage-proofing mold bag; the lower end of the second grouting pipe extends into the second anti-seepage mold bag, and a plurality of second grout outlet holes are longitudinally distributed on the second grouting pipe positioned in the second anti-seepage mold bag. The prestressed anchor cable can effectively control the water leakage phenomenon of the orifice during the construction of the anchor cable, and saves the subsequent leaking stoppage cost.
Description
Technical Field
The utility model belongs to the technical field of foundation ditch reinforcement construction, concretely relates to utilize prestressed anchorage cable of mould bag prevention of seepage.
Background
When the prestressed anchor cable is used for foundation pit soil body reinforcing construction in a stratum, particularly a complex stratum, the foundation pit is damaged and the safety of constructors and construction equipment is endangered due to the fact that underground water is abundant and the phenomenon of foundation pit water leakage is easy to occur during drilling. At present, the prestressed anchor cable is commonly adopted for reinforcing the foundation pit soil body in China, but the phenomenon of water leakage is common due to poor treatment of a drilling hole opening, damage of a grouting material after prestress is applied, influence on subsequent construction and high leakage stoppage construction cost.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides an utilize prestressed anchorage cable of mould bag prevention of seepage. The to-be-solved technical problem of the utility model is realized through following technical scheme:
a pre-stressed anchor cable for preventing seepage by using a mold bag comprises an anchor cable main body, wherein a first grouting pipe and a second grouting pipe are fixed on the anchor cable main body side by side, the lower end of the first grouting pipe is opened, and the lower end of the second grouting pipe is sealed; the upper end of the anchor cable main body is sleeved with a first anti-seepage mold bag and a second anti-seepage mold bag respectively, the first anti-seepage mold bag is positioned below the second anti-seepage mold bag, and two ends of the first anti-seepage mold bag and two ends of the second anti-seepage mold bag are sealed with the anchor cable main body; the first grouting pipe penetrates through the first seepage-proofing mold bag and the second seepage-proofing mold bag, a plurality of first grout outlet holes are longitudinally distributed on the first grouting pipe positioned in the first seepage-proofing mold bag, a packer is arranged in the first grouting pipe below the first grout outlet holes, and the packer is positioned in the first seepage-proofing mold bag; the lower end of the second grouting pipe extends into the second anti-seepage mold bag, and a plurality of second grout outlet holes are longitudinally distributed on the second grouting pipe located in the second anti-seepage mold bag.
The anchor cable further comprises a slurry outlet pipe, wherein the slurry outlet pipes are fixed on the anchor cable main body side by side and penetrate through the first seepage-proofing mold bag and the second seepage-proofing mold bag.
Further, the first impermeable mould bag and the second impermeable mould bag are both geotechnical mould bags.
Furthermore, the distance between the first impermeable mould bag and the second impermeable mould bag is 10-20 cm, and the lengths of the first impermeable mould bag and the second impermeable mould bag are 0.3-0.7 m.
Furthermore, the anchor cable main body is formed by fixing a plurality of unbonded steel strands through a plurality of clamping rings, and a guide cap is fixed at the lower end of the anchor cable main body.
The utility model has the advantages that:
1. compared with the traditional prestressed anchor cable, the prestressed anchor cable of the utility model can effectively control the water leakage phenomenon of the orifice during the construction of the anchor cable, reduce the influence on the subsequent construction to the maximum extent, save the subsequent leaking stoppage cost and improve the construction efficiency;
2. the prestressed anchor cable is novel and reasonable in design, high in working reliability, good in using effect and convenient to widely popularize and use.
The present invention will be described in further detail with reference to the drawings and examples.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is a schematic view of the local enlarged structure of the present invention.
Description of the reference numerals:
1-an anchor cable main body; 2-a snap ring; 3, a guide cap; 4-steel wire; 5-a first grouting pipe; 6-a second grouting pipe; 7-a first impermeable mould bag; 8-a second impermeable mould bag; 9-a packer; 10-slurry outlet pipe; 5-1-a first grout outlet; 6-1-second slurry outlet.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the present invention is not limited thereto.
Example 1
Referring to fig. 1 to 2, an embodiment of the present invention provides a prestressed anchor cable for preventing seepage by using a mold bag, including an anchor cable main body 1, where the anchor cable main body 1 is formed by fixing a plurality of unbonded steel strands through a plurality of snap rings 2, and a distance between adjacent snap rings 2 is 2m, so as to ensure that the steel strands are straight; the lower end of the anchoring section of the anchor cable main body 1 is fixedly provided with a guide cap 3, the ends of the steel strands are tightened together by the guide cap 3, smooth installation of the steel strands is guaranteed when the steel strands enter the anchor cable holes, and the anchoring force of the anchor cable main body 1 is enhanced.
A first grouting pipe 5 and a second grouting pipe 6 are bound on the anchor cable main body 1 side by side through a steel wire 4, and the first grouting pipe 5 and the second grouting pipe 6 are parallel to the anchor cable main body 1 integrally; the lower end of the first grouting pipe 5 is opened, and the lower end of the second grouting pipe 6 is sealed; the anchor cable comprises an anchor cable body 1, a first anti-seepage mold bag 7 and a second anti-seepage mold bag 8, wherein the upper end of the anchor cable body 1 is sleeved with the first anti-seepage mold bag 7 and the second anti-seepage mold bag 8 respectively, the first anti-seepage mold bag 7 and the second anti-seepage mold bag 8 are both geotechnical mold bags, the lengths of the first anti-seepage mold bag 7 and the second anti-seepage mold bag 8 are both 0.5m, and the distance between the first anti-seepage mold bag 7 and the second anti-seepage mold bag 8 is 15 cm; the first impermeable mold bag 7 is positioned below the second impermeable mold bag 8, and two ends of the first impermeable mold bag 7 and two ends of the second impermeable mold bag 8 are wound and sealed with the anchor cable main body 1 through steel wires 4.
The first grouting pipe 5 penetrates through the first impermeable mold bag 7 and the second impermeable mold bag 8 and is positioned below the first impermeable mold bag 7, 3-4 first grout outlet holes 5-1 are longitudinally drilled on the pipe wall of the first grouting pipe 5 positioned in the first impermeable mold bag 7, a packer 9 is arranged in the first grouting pipe 5 positioned below the first grout outlet holes 5-1, the packer 9 is positioned in the first impermeable mold bag 7, and the packer 9 is used for segmented grouting of the prestressed anchor cable; by grouting into the first grouting pipe 5, grouting material flows into the first impermeable mold bag 7 through the first grout outlet, after grouting is completed, the packer 9 is poked open, and then grouting fluid flows into the first impermeable mold bag 7 and the anchor cable duct along the first grouting pipe 5 to perform grouting of the anchor cable duct. The first seepage-proofing mold bag 7 is used for avoiding the condition of foundation pit water leakage when grout is not filled densely during grouting in the anchor cable pore.
The lower end of the second grouting pipe 6 extends into the second seepage-proofing mold bag 8, and 3-4 second grout outlet holes 6-1 are longitudinally drilled in the pipe wall of the second grouting pipe 6 positioned in the second seepage-proofing mold bag 8; and grouting materials enter the second impermeable mold bag 8 through the second grouting holes 6-1 by grouting into the second grouting pipe 6. The second seepage-proofing mould bag 8 avoids the situation that the first seepage-proofing mould bag 7 is damaged and the foundation pit leaks water after the anchor cable is tensioned; secondly, the condition that the foundation pit leaks water due to water seepage of the foundation pit wall between the first impermeable membrane bag 7 and the second impermeable membrane bag 8 is avoided.
In order to ensure more complete filling of the grouting liquid, slurry outlet pipes 10 are fixed on the anchor cable main body 1 side by side through steel wires 4, and the slurry outlet pipes 10 penetrate through the first impermeable mold bag 7 and the second impermeable mold bag 8 and are positioned below the first impermeable mold bag 7. When grouting is continuously performed in the first impermeable mold bag 7 and the anchor cable pore channel, if slurry flows out of the slurry outlet pipe 10, the grouting is full, and the grouting can be stopped.
In addition, for convenience of grouting and observation, the heights of the upper ends of the first grouting pipe 5, the second grouting pipe 6 and the grout outlet pipe 10 are all higher than the height of the anchor cable main body 1.
Example 2
The embodiment of the utility model provides an utilize construction method of prestressed anchorage cable of mould bag prevention of seepage specifically includes following step:
step 1: and drilling anchor cable holes in the side wall of the foundation pit.
According to the design requirements, a hole position is determined and marked by using a measuring instrument, then a down-the-hole percussion drill is used for drilling according to the design requirements, after the drilling is finished, a drill rod and a drilling tool are pulled out one by one, an impactor is cleaned for standby, a polyethylene pipe is used for rechecking the hole depth, and the hole is blown by high-pressure air to clean the hole.
Step 2: arranging a first grouting pipe, a second grouting pipe, a first seepage-proofing mold bag, a second seepage-proofing mold bag and a grout outlet pipe on the anchor cable main body, and lowering the anchor cable main body into an anchor cable duct.
And fixing the first grouting pipe, the second grouting pipe, the grout outlet pipe, the clamping ring and the guide cap on the steel strand according to design requirements.
Then, an anchor cable main body is placed, the placing angle of the anchor cable main body is consistent with the drilling angle, force is required to be applied and the anchor cable main body is placed uniformly without swinging left and right, and the steel strands are ensured to be straight.
And step 3: and after the anchor cable main body is placed, grouting the first anti-seepage mold bag.
The grouting material is quick-setting mortar, and grouting is stopped after the grouting pressure reaches more than 1 MPa.
And 4, step 4: and after the first anti-seepage mold bag is grouted, grouting the anchor cable pore passage.
And after the first impermeable mold bag completes grouting, poking a packer in the first grouting pipe by using a reinforcing steel bar to perform grouting on the anchor cable duct, wherein the grouting material is a high-strength quick anchoring agent, and when the grout flows out from the upper orifice of the grout outlet pipe, the grouting is full, and the grouting is stopped.
And 5: and (3) when the slurry in the anchor cable pore channel reaches the designed anchoring strength, performing prestress tensioning on the anchor cable, and performing grouting on a second anti-seepage mold bag after tensioning is completed.
The grouting material of the second anti-seepage mold bag is quick-setting mortar, and grouting is stopped when the grouting pressure reaches more than 1 MPa.
The utility model discloses in the work progress, can effectual control anchor rope construction area seepage water's phenomenon, improve the construction environment, practice thrift the maintenance cost, and use the rapid hardening material, improved the efficiency of construction.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (5)
1. The pre-stressed anchor cable for preventing seepage by using the mold bag is characterized by comprising an anchor cable main body, wherein a first grouting pipe and a second grouting pipe are fixed on the anchor cable main body side by side, the lower end of the first grouting pipe is opened, and the lower end of the second grouting pipe is sealed; the upper end of the anchor cable main body is sleeved with a first anti-seepage mold bag and a second anti-seepage mold bag respectively, the first anti-seepage mold bag is positioned below the second anti-seepage mold bag, and two ends of the first anti-seepage mold bag and two ends of the second anti-seepage mold bag are sealed with the anchor cable main body; the first grouting pipe penetrates through the first seepage-proofing mold bag and the second seepage-proofing mold bag, a plurality of first grout outlet holes are longitudinally distributed on the first grouting pipe positioned in the first seepage-proofing mold bag, a packer is arranged in the first grouting pipe below the first grout outlet holes, and the packer is positioned in the first seepage-proofing mold bag; the lower end of the second grouting pipe extends into the second anti-seepage mold bag, and a plurality of second grout outlet holes are longitudinally distributed on the second grouting pipe located in the second anti-seepage mold bag.
2. The pre-stressed anchor cable using a form bag for seepage control as claimed in claim 1, further comprising a grout outlet pipe, wherein the grout outlet pipe is fixed on the anchor cable main body side by side, and the grout outlet pipe penetrates through the first and second seepage-control form bags.
3. The prestressed anchorage cable using form bag for seepage control of claim 1 or 2, wherein the first seepage-control form bag and the second seepage-control form bag are both geotechnical form bags.
4. The pre-stressed anchor cable for preventing seepage by using a formwork bag as claimed in claim 3, wherein the first anti-seepage formwork bag and the second anti-seepage formwork bag are spaced from each other by 10-20 cm and have a length of 0.3-0.7 m.
5. The pre-stressed anchor cable for preventing seepage by using a mold bag as claimed in claim 4, wherein the anchor cable main body is formed by fixing a plurality of unbonded steel strands through a plurality of snap rings, and a guide cap is fixed at the lower end of the anchor cable main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220964611.8U CN217480186U (en) | 2022-04-25 | 2022-04-25 | Prestressed anchor cable for preventing seepage by using mould bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220964611.8U CN217480186U (en) | 2022-04-25 | 2022-04-25 | Prestressed anchor cable for preventing seepage by using mould bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217480186U true CN217480186U (en) | 2022-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220964611.8U Active CN217480186U (en) | 2022-04-25 | 2022-04-25 | Prestressed anchor cable for preventing seepage by using mould bag |
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| Country | Link |
|---|---|
| CN (1) | CN217480186U (en) |
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2022
- 2022-04-25 CN CN202220964611.8U patent/CN217480186U/en active Active
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