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该文以云南德厚水库建设工程为例,针对罗世鲊村-黑莫村一带分布有地下水位低槽区,水库蓄水后存在渗漏问题,在分析库区地质资料及水文地质资料的基础上,结合实地踏勘,确定潜在的渗漏通道。采用示踪试验,在地下水位低槽区的ZK15和ZK02钻孔处,进行食盐和孢子粉示踪剂的投放,并在盘龙河畔的天然泉水出露点S1和S2处监测。示踪试验结果表明,地下水位低槽区与泉水S1和S2存在水力联系,并用示踪剂估算岩溶地下水的实际流速约为620m/d。
In this paper, the construction of Dehou Reservoir in Yunnan Province is taken as an example. According to the low groundwater level slot area distributed in the area of Luo Shihuan Village - Heimo Village, there is a leakage problem after the reservoir is impounded. Based on the analysis of the geological and hydrogeological data , Combined with field reconnaissance to determine the potential leakage path. Tracer tests were conducted to salt and spore powder tracer at holes ZK15 and ZK02 in the low water table area and monitored at points S1 and S2 of the natural springs at Panlong River. Tracer test results show that there is hydraulic connection between springs S1 and S2 in low trough area of groundwater table and tracer to estimate the actual flow rate of karst groundwater is about 620m / d.