深地层防渗墙灌注接头管及拔管方法
By using a split-type connector pipe and a specific pipe pulling method, the problem of high resistance in pulling out the grouting connector pipe of deep stratum anti-seepage wall was solved, achieving a lower pulling force and a higher success rate in pipe pulling, which is suitable for the construction of deep stratum anti-seepage walls.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SINOHYDRO FOUND ENG
- Filing Date
- 2023-11-27
- Publication Date
- 2026-07-17
AI Technical Summary
The existing deep stratum cutoff wall grouting joint pipes have high resistance when pulled out, requiring a pulling force of up to several hundred tons. Furthermore, improper timing of pipe pulling can easily cause the joint pipe to jam and become impossible to pull out, resulting in huge cost waste.
A split-type connector pipe is adopted, which is formed by the first half pipe and the second half pipe being nested and interlocked. By decomposing the concrete adhesion and jamming resistance and the stratum squeezing resistance, the pulling force is reduced. The split-type connector pipe is pulled out first on the side closer to the stratum, combined with the pipe pulling method of hydraulic mechanism and pressure plate.
Under the same conditions, the pipe can be pulled out with a lower pulling force, which improves the pulling efficiency and success rate, reduces the probability of joint pipe jamming, broadens the judgment conditions for the initial setting time of concrete, and ensures that the pipe pulling is carried out smoothly.
Smart Images
Figure CN117536230B_ABST