Copper sheet water stop construction method

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 wat