Concrete face dam peripheral joint water sealing structure and construction method thereof

Abstract

The invention discloses a concrete face dam peripheral joint water sealing structure and a construction method thereof. A combined rubber stick is arranged at the joint opening of a peripheral joint groove and covered with a metal water sealing belt which is matched with the combined rubber stick in a concave-convex mode; the two sides of the metal water sealing belt are attached to the attaching positions of a joint groove concrete face through dual-component epoxy resin. The upper portion of the metal water sealing belt is covered with an anti-seepage protection cover piece; the space between the metal water sealing belt and the anti-seepage protection cover piece is filled with plastic filler; the anti-seepage protection cover piece is fixed to a stainless steel pressing strip through an expansion bolt. The anti-seepage protection cover piece and the two lateral sides of the stainless steel pressing strip are sealed through an elastic sealing edge, and the width of the elastic sealing edge is not smaller than 5 cm. The anti-seepage protection cover piece is an ethylene propylene diene monomer cover piece. The metal water sealing belt is a stainless steel water sealing belt or a red copper water sealing belt. The top water sealing effect is enhanced by adding the arc-shaped closed metal water sealing belt, and the concrete face dam peripheral joint water sealing structure can be widely applied to a 100 m-level concrete face dam newly-established project and a reinforcing and repairing project.

Description

technical field [0001] The invention relates to the technical field of concrete face rockfill dams, and relates to a water-stopping structure for joints around concrete face dams and a construction method thereof. Background technique [0002] For a high concrete face rockfill dam, under the action of its own weight and upstream water pressure, the rockfill body will undergo large deformation, and the peripheral joints will also undergo three-dimensional deformation of opening, shearing and settlement, and the deformation value may reach tens of centimeters. For high concrete face rockfill dams, three waterstops are usually set up around the joints: bottom waterstop, middle waterstop and top waterstop. According to the technical development experience of concrete face rockfill dams at home and abroad, due to the difficulty in construction of the central waterstop, the construction quality is not easy to guarantee, and the quality of the concrete in the lower part of the wate...

AI Technical Summary

Problems solved by technology

According to the technical development experience of concrete face rockfill dams at home and abroad, due to the difficulty in construction of the central waterstop, the construction quality is not easy to guarantee, and the quality of the concrete in the lower part of the waterstop is poor due to insufficient local vibration. Most of them tend to be canceled except for super high dams Waterstop in the middle puts forward higher requirements on the anti-seepage reliability of top and bottom waterstops

When the face dam leaks and repairs to the surrounding seams are required, if the face is removed and the bottom and middle water stops are inspected and repaired one by one, the amount of work will be huge and new damage will be caused to the face

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