Rapid sealing method for high-pressure water-surge drilling hole

Abstract

The invention discloses a rapid sealing method for high-pressure water-surge drilling hole. The method comprises the following steps: a high-pressure water-surge drilling hole (13) is blocked and designed according to a hydrogeological information of the high-pressure water-surge drilling hole (13), and a drilling hole wall groove (5) is formed on the hole wall of the high-pressure water-surge drilling hole (13) with a drilling tool, the anchor rod bulge (7) is machined on a grouting anchor rod (4), and an assembled bagging anchor rod device is fixed in the high-pressure water-surge drilling hole (13) ; grouting is carried out in an anchor rod bag (6) from a bagging grouting pipe (3), the grouting is stopped when the set pressure is reached, a grouting anchor rod valve (1) is kept open, and after the grouting material in the anchor rod bag (6) is solidified and stabilized, the grouting anchor rod valve (1) is closed, thereby completing the sealing of the high-pressure water-surge drilling hole (13). By the method, the high-pressure water-surge drilling hole can be blocked safely, efficiently and conveniently, and the gushing water can be recycled and reused.

Description

technical field [0001] The invention belongs to the technical field of deep excavation engineering, and in particular relates to a rapid plugging method for high pressure and large water inflow boreholes in advanced drilling and water exploration projects, and is especially suitable for plugging and reinforcement of boreholes with large water inflow and high water pressure and reuse. Background technique [0002] In roadway and shaft excavation construction, especially when passing through complex water-bearing zones, advanced drilling must be carried out to detect water, so as to avoid water inrush disasters. When the water pressure of the water exploration borehole is small and the water inflow is small, the cement-sodium silicate double-liquid grouting method can be used for sealing, but when the water inflow is large and the water pressure is high, the cement-sodium silicate There will be problems of slurry dispersion and slurry structure holes. In engineering practice...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a fast plugging method for high pressure and large water inflow drilling in order to solve the problems of unreliable plugging, difficult construction and inability to achieve fast and efficient plugging in the prior art. Not only can it safely, efficiently and conveniently block high-pressure water-rich boreholes, but it can also reuse gushing water as a resource

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