古洞口电站大坝趾板贯穿性裂缝化学灌浆处理

Treatment of Cracks in Dam Toe with Chemical Grouting for Gudongkou Hydropower Station

介绍古洞口电站大坝趾板在浇筑混凝土时由于温度应力和基础约束的影响产生了贯穿性裂缝 ,裂缝的渗漏危及大坝的运行安全。因趾板处于水下 ,而且是关键部位 ,处理难度较大。在不影响工程的工期和经济的条件下 ,采用了一种简单的化学灌浆处理方法 ,结果是成功的。

Due to temperature stress and foundation restraint,transverse cracks occurred during the pouring of dam toe for Gudongkou Hydropower Station.Leakage through the cracks would endanger the operation of the dam.Since the toe is underwater and is a key componert,its treatment is quite difficult.A simple treatment with chemical grouting has been wsed successfully without impairing the project schedule and construction cost.