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大坝建成后,坝址周边环境发生剧变,水库中下层水具较强的侵蚀性。库水作为一种溶液,既具有水压力作用,又具有化学潜蚀作用。它可以促使坝基帷幕破损、混凝土强度减低以及坝基软岩性状的变化,甚至影响大坝的稳定,应积极采取防治措施。
After the completion of the dam, the surrounding environment of the dam site drastically changed, and the water in the middle and lower reaches of the reservoir was strongly corrosive. As a solution, the reservoir water not only has the effect of water pressure, but also has the function of chemical latent erosion. It can promote dam foundation curtain damage, concrete strength and dam foundation soft rock changes, or even affect the stability of the dam, should take active preventive measures.