Repair process for local leakage of underwater concrete wall

Abstract

The invention discloses a repair process for local leakage of an underwater concrete wall, and belongs to the technical field of water conservancy and hydropower construction. The method comprises the steps that a leakage area on a non-water-contact wall surface is delineated, a water catchment mechanism and a first sealing mechanism are installed, a mapping area of a water guide crack on the non-water-contact wall surface is determined, a second sealing mechanism is installed, a grouting hole is drilled, a formwork is fixed to the water guide crack seam of the water-contact wall surface, water pumping and drainage are conducted on the formwork and the crack, and cement grout is injected into the formwork. And injecting crack pouring glue into the cracks and the like. According to the repair process for local leakage of the underwater concrete wall, the cement grout and crack pouring glue area can be completely isolated from a water source, interference of water to repair operation is avoided, the filling strength of the cement grout and the crack pouring glue is guaranteed, cavities are prevented from being generated in the pouring area, and the strength of the repaired position is enhanced. All devices used in the repairing process are simple in structure and easy and convenient to operate, and repairing of local leakage of the underwater concrete wall can be conveniently achieved.

Description

technical field [0001] The invention relates to a repair process for local leakage of underwater concrete walls, which belongs to the technical field of water conservancy and hydropower construction. Background technique [0002] In water conservancy and hydropower projects, a part of the outer wall of concrete auxiliary structures used to place electromechanical equipment such as suction pumps is often below the water surface of the river or reservoir. During the use of water conservancy and hydropower projects, due to factors such as structural stress conditions, foundation deformation, temperature control, and water pressure, cracks will appear in the concrete structure, and cracks will continue to expand inside the wall under the action of water pressure. Finally, water seepage occurs in the inner wall of the auxiliary structure. Under the long-term action of water pressure, cracks will continue to expand, and the amount of water leakage will continue to increase, which...

AI Technical Summary

Problems solved by technology

But for water-rich fractures under pressure, the surface treatment method, drilling plugging method and polymer immersion method cannot achieve the ultimate goal because they cannot block the water supply source; while the grouting method is completely water-rich and has a certain pressure in the fracture. , the grout cannot completely displace the water in the cracks, and it only has a better reinforcement effect on the wider parts of the cracks, and cannot achieve the purpose of radically curing the cracks

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