Subway station side wall water seepage back grouting plugging method

Abstract

The invention relates to the technical field of subway maintenance, in particular to a subway station side wall water seepage back grouting plugging method. The subway station side wall water seepageback grouting plugging method comprises the steps of drilling a hole, installing a grouting pipe head, conducting water drainage and pressure relief, conducting grouting and plugging the grouting pipe, wherein the outer side of the side wall is provided with a waterproof roll, an enclosure structure is arranged outside the waterproof roll, a water jet drill hole machine is adopted to drill a holeat the center position of water seepage of the side wall, the depth of the hole reaches the surface of the enclosure structure, the grouting pipe is installed in the hole, water drainage and pressurerelief are conducted for a period, after the water flow in the pipe becomes small, the grouting pipe is connected, cement and sodium silicate mixed slurry is poured into the grouting pipe, gaps between the waterproof roll and the enclosure structure is filled, an underground water seepage channel is blocked, and therefore a back plugging effect is achieved. The subway station side wall water seepage back grouting plugging method achieves a good water seepage plugging effect, has a rapid plugging speed, thoroughly solves the problem that repeated leakage of a station side wall needs repeated plugging and provides more reliability quality guarantee for station operation in a later period. The subway station side wall water seepage back grouting plugging method is mainly applied to the subwayside wall water seepage plugging aspect.

Description

technical field [0001] The invention relates to the technical field of subway maintenance, and more specifically relates to a grouting sealing method behind the leaking water of a side wall of a subway station. Background technique [0002] As an important carrier to relieve the pressure of ground traffic, urban subways generally have the characteristics of large buried depth and long service life. Due to the defects of the waterproof membrane of the side wall and the concrete itself during the construction process, water leakage often occurs in different degrees on the side wall , affect the use of the structure, and cause safety hazards to the later station operation. Currently, the commonly used plugging method: groove the surface of the concrete crack, bury the grouting needle and inject epoxy resin into the plugging method. The problems of this method: one is plugging The method is not thorough, and the leakage problem cannot be solved fundamentally, and repeated leakag...

AI Technical Summary

Problems solved by technology

[0002] As an important carrier to relieve the pressure of ground traffic, urban subways generally have the characteristics of large buried depth and long service life. Due to the defects of the waterproof membrane of the side wall and the concrete itself during the construction process, water leakage often occurs in different degrees on the side wall , affect the use of the structure, and cause safety hazards to the later station operation. Currently, the commonly used plugging method: groove the surface of the concrete crack, bury the grouting needle and inject epoxy resin into the plugging method. The problems of this method: one is plugging The method is not thorough, and the leakage problem cannot be solved fundamentally, and repeated leakage is prone to occur; second, repeated leakage needs to be treated repeatedly, which takes a long period and costs a lot; third, only sealing the concrete surface cannot solve the problem well Concrete internal leakage, as time goes by, the structural steel bars are easy to corrode, and the structural quality cannot be guaranteed; therefore, it is necessary to use a more efficient and fast plugging method that treats both symptoms and root causes

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