坝址水环境与三峡坝基帷耐蚀性研讨

Water Environment at Dam Site & Anti-Corrosion of Dam Foundation Curtain

大坝运行后水环境发生剧变，由于库水中有机质的富集，可导致下层库水和部分坝基地下水侵蚀性的加强，从而造成坝基水泥帷防渗性能的衰减，甚至有可能引起坝基软弱岩层性状的变化。从丹江口、梅山、安砂、新安江等运行多年的水质资料看，三峡大坝坝基灌浆帷幕的耐蚀性研究应予重视。

After a dam is built and the water environment will change greatly. A large quantity of organism will often enrich in the reservoir, with the result that it may lead to the chemically corrosion to the dam foundation, make the attenuation in curtain impermeability, and even change the behaviour of soft and weak rock layers in the dam foundation. From the water quality findings at the Danjiangkou, Meishan, Ansha, Xinganjiang, etc, it should be paid great attention to anticorrosion of the grout curtain in the Three Gorges dam site.