Copper sheet water stop construction method

Abstract

The invention relates to a copper sheet water stop construction method, which solves the problem of poor water stop effect of a construction method of firstly chiseling grooves in concrete and then filling the concrete during copper sheet water stop construction. The method comprises the steps that firstly, the outline of a water stop groove is cut through a cutting machine on firstly-poured concrete, the firstly-poured concrete in the range of the water stop groove is chiseled away manually with an electric pick, an expansion bolt hole is drilled through an impact electric drill, and after old concrete in the water groove is chiseled away, loose concrete particles and blocks on the surface and in the expansion bolt hole are manually removed; washing the water stop groove and the expansion bolt hole with high-pressure water to clean the concrete base surface and the expansion bolt hole, manually compacting the cushion epoxy resin mortar after the concrete interface is dried, then installing a copper sheet water stop, knocking the copper sheet water stop with a rubber hammer to enable the copper sheet water stop to be tightly attached to the compacted cushion epoxy resin mortar, and sealing the cushion epoxy resin mortar; and after the copper sheet water stop is installed, the copper sheet water stop is fixed through a gasket and an expansion bolt, the epoxy resin mortar is compacted and filled, curing is conducted for 7 days in a dry environment, and finally plug concrete is poured.

Description

technical field [0001] The invention relates to a water-stop construction method of concrete copper sheets for plugs in civil engineering. Background technique [0002] During the construction of the plug concrete of the hydropower station, due to the drying shrinkage of the newly poured plug concrete, the interface between the first poured concrete and the newly poured plug concrete will be separated, forming a leakage channel and affecting the use function of the plug concrete. To cause a safety accident, it is necessary to set a water stop between the first poured concrete and the newly poured plug. The traditional copper sheet water stop construction adopts a deep water stop groove in the previously poured concrete. The water stop groove is rectangular, with a width and height of 400mm. ×400mm, then install the copper sheet water stopper. The copper sheet water stopper is located in the middle of the water stop groove. Finally, the plug concrete is poured. Due to the nar...

AI Technical Summary

Problems solved by technology

[0002] During the construction of plugging concrete in hydropower stations, due to the dry shrinkage of the newly poured plugging concrete, the interface between the previously poured concrete and the newly poured plugging concrete will be disengaged, forming a leakage channel, which will affect the function of the plugging concrete. In severe cases Cause safety accidents, so it is necessary to install a water stop between the first poured concrete and the newly poured plug. The traditional copper sheet water stop construction uses a deeper water stop groove in the first poured concrete. The water stop groove is rectangular, and the width × height is 400mm ×400mm, then install the copper sheet water stop, the copper sheet water stop is located in the middle of the water stop, and finally pour the plug concrete, because the concrete in the water stop has a narrow working space, especially the top arch, the concrete is not easy to pour densely, which seriously affects the backfill of the water stop Concrete construction quality, and the copper water seal is not easy to fix. When pouring backfill concrete, the copper water seal is easy to shift, and the expected water sealing effect cannot be achieved. Water seepage and water leakage often occur in engineering practice, which affects the normal function of the project. Seriously endanger the safety of the project

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