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坝址区渗漏问题一直是水利工程界研究的重点问题。水库在蓄水期出现渗漏,将直接影响水电站的经济效益,甚至对水库安全产生威胁。坝址区岩溶环境十分复杂,尤其是在钙质砂岩区,钙质胶结物溶解后将会产生类岩溶现象,库水在压力的作用下通过地下通道向邻区渗漏。本文研究了库区含水岩组和地下水补径排条件,通过坝址区地下水连通试验,得出不同区域的电导率变化。基于试验结果,得出了坝址区地下水系分布情况。可为同类型水库坝址区防渗漏研究提供参考。
The leakage of dam site has always been a key issue in the research of water conservancy engineering. The leakage of the reservoir during the storage period will directly affect the economic benefits of the hydropower station and may even threaten the reservoir safety. The karst environment in the dam site area is very complicated. In particular, in the calcareous sandstone area, the karst phenomenon will occur after the calcareous cement is dissolved. The reservoir water leaks into the adjacent area through the underground channel under the pressure. In this paper, the water-bearing rock reservoirs in the reservoir area and the groundwater recharge conditions are studied. The groundwater conductivity test in the dam area is used to obtain the conductivity changes in different areas. Based on the test results, the distribution of groundwater in dam site is obtained. It can provide a reference for the research on the anti-seepage of the same type of dam site.