Curtain rapid-leakage-plugging device in high-water-head stratum and working method thereof

Abstract

The invention relates to a curtain rapid-leakage-plugging device in a high-water-head stratum and a working method thereof. The curtain rapid-leakage-plugging device in the high-water-head stratum comprises a water diversion system, an anchoring system and a cable tie. First a water diversion pipe is used for drawing water out of a water leakage hole, then a grouting pipe A is used for performinggrouting into an expansion bag located outside the water diversion pipe, and combined with a bracket also located outside the water diversion pipe, an anchorage body A is formed; a grouting pipe B isused for performing grouting into a cavity between the anchorage body A and the water diversion pipe and the hole wall of the water leakage hole to form an anchorage body B; at the moment, a gap between the water diversion pipe and the water leakage hole is completely blocked, and the water in the water leakage hole can only flow from the water diversion pipe, and a valve A of a water outlet of the water diversion pipe is finally closed to complete the water plugging. The curtain rapid-leakage-plugging device has simple principle, convenient operation, high plugging speed and good effect, andcan greatly improve the plugging quality of a water leakage curtain.

Description

technical field [0001] The invention relates to the technical field of curtain leak plugging in foundation pits, in particular to a curtain rapid leak plugging device in high water head formations and a construction method thereof. Background technique [0002] When carrying out foundation pit support construction in high water head strata, it is often encountered that the curtain is damaged and continues to leak. At this time, the leak hole continues to gushes water, which makes it difficult to block. The traditional curtain water leakage treatment method is generally to use cement water glass double grout grouting to seal or use grout stopper pressure grouting to seal. Using cement water glass double grout to seal is only effective for slight water gushing, and the construction cost is high; if using grout stopper pressure grouting, when the water pressure is high, it is difficult to seal the leaking hole with the grout stopper, and it is impossible to The leak hole is c...

AI Technical Summary

Problems solved by technology

However, currently commonly used water-swelling strips, kelp and other water-swelling materials are mostly strips, and the winding operation is time-consuming and labor-intensive, and the construction quality is difficult to guarantee; the expansion rate is limited and the integrity is poor, which greatly reduces the water-stop effect

In addition, this type of material cannot provide sufficient anchoring force for the water diversion pipe. In order to prevent the water diversion pipe from coming out of the leakage hole, it needs to be supplemented with a cable-stayed structure, which brings inconvenience to the sealing construction

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