Overflow face protection method

Abstract

The invention provides an overflow face protection method in which shock-and-abrasion resistant protection processing is performed on a concrete surface of an overflow face of an overflow dam. The overflow face protection method includes step 1, firstly grinding and repairing the concrete surface, above water surface, of the overflow face; step 2, smearing a polyuria coating on the concrete surface, above the water surface, of the overflow face; step 3, when a power unit halts and water level of the overflow face of the overflow dam falls back, grinding and repairing the concrete surface, exposed after the water level falls back, of the overflow face; step 4, smearing a high-tenacity epoxy coating on the concrete surface, exposed after the water level falls back, of the overflow face. By the overflow face protection method, the problems of denudation and cracking existing on the concrete surface of the overflow face of the overflow dam can be solved, structural safety of the overflow face can be guaranteed, and the overflow face can meet requirements on safe operation of the overflow dam.

Description

technical field [0001] The invention relates to the technical field of anti-wear protection, in particular to an overflow surface protection method. Background technique [0002] An overflow dam is a dam whose crest can discharge floods, also known as a rolling dam. The overflow dam is generally made of concrete or masonry. There are three types of overflow in the overflow dam: crest overflow (drop flow), dam surface overflow and large orifice dam surface overflow. The overflow dam and the factory building are combined together, as the flood discharge structure, the overflow dam of the factory building inside the dam, the factory building roof overflow and the factory dam joint flood discharge method that lifts the factory building roof discharge, which can be used in the alpine and narrow valley areas. A way to solve the shortage of spillways and power plant layouts is a new form developed from overflow dams. Because the overflow surface of the overflow dam needs to flow ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a protection method for the overflow surface to solve the problem of erosion and cracks on the concrete surface of the overflow dam overflow surface, ensure the structural safety of the overflow surface, and make the overflow surface meet the safe operation of the overflow dam need