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在坝区水文地质调查及岩溶发育研究的基础上,对区域中地表水、地下水的宏量组份、稀土元素含量、碳酸盐的碳、氧同位素组成的调查结果表明:雨季前后地下水水化学的变化表明存在断裂带或岩溶通道深部埋藏水向地表排泄的特征;稀土元素含量的变化证实了坝址上游和下游均具有河水补给泉水现象的存在;碳、氧同位素组成的测定为进一步划分出相关的地下水系统提供了依据。本研究结果为坝区岩溶渗漏的工程处理方案提供理论依据。
Based on the research of hydrogeology and karst development in the dam area, the survey results of the macro-components of surface water and groundwater, the contents of rare earth elements and the carbon and oxygen isotopic composition of carbonate show that the chemical composition of groundwater before and after rainy season The variation of REE content confirms the existence of river recharge spring water both upstream and downstream of dam site. The determination of carbon and oxygen isotopic composition is further divided into Relevant groundwater systems provide the basis. The results of this study provide a theoretical basis for engineering treatment of karst seepage in dam area.