水布垭工程地质研究
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摘要
由于水布垭坝址区地质环境比较复杂，工程地质研究历时多年。研究确定坝址的地震基本烈度为Ⅵ度，建议大坝设计以Ⅶ度地震烈度校核为宜。研究结果表明，大多数库岸边坡稳定性好；仅少量滑坡稳定性差，但对水库的安全运行不构成重大威胁。水库封闭条件好，不存在向邻谷渗漏问题。鉴于坝址区地质环境比较复杂，对与工程关系密切的马崖高陡边坡、大岩淌滑坡、马岩湾滑坡等，必须采取工程措施进行处理。此外，对建坝的主要工程地质问题作了扼要的论述，并提出了处理意见及应采取的工程措施。
Since the geologic environment in the dam site region of Shuibuya Project is rather complicated, studies on engineering geology for the project has lasted several years. Based on research results, the basic earthquake intensity at the dam site is determined to be of Ⅵ magnitude and it is proposed that the dam design should be checked in accordance with earthquake intensity of Ⅶ magnitude. Research results show that the slope stability of most reservoir banks is perfect, and only a few landslides stability is not up to standard, which will not pose serious threat to the safe operation of the reservoir. The closure condition of the reservoir is very good, so that there is no problem of water leakage from the reservoir to adjacent valley. In view of the complicated geologic environment in the dam site region, it is necessary to take engineering measures to treat Maya high steep slope, Dayantang landslide, Mayanwan landslide, which are closely related to the project. Main problems on engineering geology for building the dam are briefly described and some proposals and necessary engineering measures are put forward in this paper.
Since the geologic environment in the dam site region of Shuibuya Project is rather complicated, studies on engineering geology for the project has lasted several years. Based on research results, the basic earthquake intensity at the dam site is determined to be of Ⅵ magnitude and it is proposed that the dam design should be checked in accordance with earthquake intensity of Ⅶ magnitude. Research results show that the slope stability of most reservoir banks is perfect, and only a few landslides stability is not up to standard, which will not pose serious threat to the safe operation of the reservoir. The closure condition of the reservoir is very good, so that there is no problem of water leakage from the reservoir to adjacent valley. In view of the complicated geologic environment in the dam site region, it is necessary to take engineering measures to treat Maya high steep slope, Dayantang landslide, Mayanwan landslide, which are closely related to the project. Main problems on engineering geology for building the dam are briefly described and some proposals and necessary engineering measures are put forward in this paper.
引文
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