Water stop inspection and leakage treatment structure of plunge pool structural joint and water stop inspection and leakage treatment method

Abstract

The invention provides a water stop inspection and leakage treatment structure of a plunge pool structural joint and a water stop inspection and leakage treatment method. Hollow grooves are formed inthe positions, between upper water stop structures and lower water stop structures, of the structural joints between concrete plates forming a plunge pool, and the hollow grooves can be used as waterstop defect inspection channels and can also be used as leakage treatment channels; the plunge pool is divided into a plurality of inspection areas through water stop separation structures welded between the upper water stop structures and the lower water stop structures; the structural joints in the same inspection area communicate to each other, and the structural joints between different inspection areas do not communicate; and more than three steel pipes connected into a foundation gallery from the hollow grooves are pre-buried in each inspection area of the plunge pool and serve as a water inlet pipe, a water outlet pipe and an exhaust pipe for water stop inspection and a grout pipe and a grout outlet pipe for leakage treatment. The hollow grooves and the pre-buried steel pipes are both water stop inspection structures and the leakage treatment channels. According to the structure and the method, a water leakage position can be rapidly found, nondestructive repairing treatment isconducted, the hidden danger of plunge pool leakage is eliminated, and the dam flood discharge safety degree is improved.

Description

technical field [0001] The invention relates to a water stop inspection and leakage treatment structure of a pad pond structure seam and a water stop inspection and leakage treatment method. It is suitable for water seepage inspection and treatment of concrete structures in water conservancy and hydropower projects. Background technique [0002] The water cushion pond (or stilling pond) is a concrete structure built at the bottom of the riverbed downstream of the dam. When the dam discharges flood water, the water body in the water cushion pond (or stilling pond) can dissipate the energy of the flood released by the dam. Generally, the water cushion pond (or stilling pond) has a wide range and is formed by connecting multiple concrete slabs. Waterstops are installed at the joints between the slabs to prevent the water in the pond from leaking along the joints. Due to the difficulty in pouring the concrete in the lower part of the water stop, there may be defects that are no...

AI Technical Summary

Problems solved by technology

In view of the fact that there are many concrete slabs forming the water cushion pond (or stilling pool), a large number of structural joints are formed, and the water-stop defects of structural joints are hidden inside the concrete, making it difficult to observe the surface

In some projects, there have been accidents in which the corridors were flooded due to large water leakage, which may lead to the instability of the bottom plate of the cushion pond in severe cases.

The leakage treatment requires drilling and grouting on the concrete surface, which will also cause certain damage to the concrete flow surface and water stop.

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