摘要
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。
Hydrogeology and Karst characteristics are researched in the Yongdingqiao dam.Chemical compositions,REE and oxygen isotope of the surface water and groundwater and carbon isotope of the carbonate are analyzed.Hydrogeochemical changes between rain and dry season indicate that the discharge way from fault zone and deep aquifer to surface water are existence.River water recharge to the springs are confirmed by REE;hydrogeological systems are sorted by carbon and oxygen isotope.The results offer theoretical support for the treatment schemes of the Karst seepage in the dam area.
出处
《地质灾害与环境保护》
2010年第2期58-63,共6页
Journal of Geological Hazards and Environment Preservation
关键词
岩溶渗漏
永定桥水库
稀土元素
碳、氧同位素
水化学
Karst seepage
carbon and oxygen isotopes
REE
Yongdingqiao Dam
hydrogeochemistry
