Curtain grouting water plugging device in confined water stratum and working method of curtain grouting water plugging device

Abstract

The invention relates to a curtain grouting water plugging device in confined water stratum and a working method of the curtain grouting water plugging device. The curtain grouting water plugging device comprises a water guiding pipe, a water distribution pipe, a water pressure balancing pipe, a diagonal brace and a grouting pipe. Water at a water leakage point is drained into the water pressure balancing pipe through the water guiding pipe, the water distribution pipe and the water pressure balancing pipe which communicate with each other, so that the water head pressure in the pipes is balanced with the water pressure in a water leakage hole. Then the water in the guiding pipe is blocked by grouting at the bottom of the hole and grouting at a hole opening. The curtain grouting water plugging device is simple in principle and convenient to operate, static water grouting can be realized in curtain water gushing holes, and the plugging quality of a leaking curtain is greatly improved.

Description

technical field [0001] The invention relates to the technical field of foundation pit curtain leak plugging, in particular to a curtain grouting water plugging device and a working method in a pressurized water formation. Background technique [0002] During the foundation pit support construction in the confined water stratum, the situation of continuous water leakage of the curtain is often encountered. At this moment, there is water continuously flowing out in the water leakage hole, it is difficult to directly carry out grouting and plugging. The traditional curtain water leakage treatment method is generally to use cement water glass double slurry grouting to seal or use grout stop ring pressure grouting. The use of cement water glass double grout construction is only effective for slight water gushing, and the construction cost is high; if the grout stop ring is pressure grouted, when the water pressure is high, it is difficult to seal the leak hole with the grout sto...

AI Technical Summary

Problems solved by technology

The use of cement water glass double grout construction is only effective for slight water gushing, and the construction cost is high; if the grout stop ring is pressure grouted, when the water pressure is high, it is difficult to seal the leak hole with the grout stop ring, and it is impossible to seal the leak hole. Completely blocked, the blocking effect cannot be guaranteed

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