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本文主要阐述湖南省澧水三江口水电站工程在覆盖型岩溶宽河床地区,采用多种研究分析方法(岩溶形态分析法、洞隙充填物分析法、地质综合类比进行坝基岩溶工程地质分区法)及多种综合勘测手段,查明了坝基的岩溶发育规律,成功地预测评价了坝基水文工程地质条件。根据勘察资料分析的结论,进行了施工开挖处理,证明结论与实际情况相符。经工程实践,对该区的水文地质条件,岩溶渗漏的预测评价也是正确的。
This paper mainly expounds that the Sanjiankou hydropower project in Lishui, Hunan Province, covers a wide area of karst creek with a variety of research and analysis methods (Karst morphology analysis, pore filling analysis and geologic analogy) A variety of comprehensive survey means identified the karst development law of the dam foundation and successfully predicted and evaluated the geological conditions of dam foundation hydrological engineering. According to the conclusion of survey data analysis, the construction excavation was carried out, and the conclusion is consistent with the actual situation. The engineering practice, the hydrogeological conditions in the area, prediction and evaluation of karst leakage is correct.