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由于金康水电站库区的长期运行,环境水对库区内基岩以及石膏岩的溶蚀,已经对大坝的安全性产生重要影响。本文采用室内实验模拟的方法,对库区的石膏岩样品用城市自来水模拟库区环境水对其进行溶蚀实验,以其中的Ca~(2+)和SO_4~(2-)等参数为指标,根据溶蚀前后环境水的水质变化情况,并结合灰色预测的方法,分析其对水电站安全性的影响。结果表明,该库区石膏岩在当前的天然状态下遭受到环境水和地下水的强烈溶蚀。
Due to the long-term operation of Jinkang Hydropower Station reservoir area, the environmental water erosion of bedrock and gypsum rock in the reservoir area has had an important impact on the dam safety. In this paper, indoor laboratory simulation method is used to simulate the dissolution of gypsum samples in the reservoir area by using urban tap water to simulate the environmental water in the reservoir area. Taking Ca 2+ and SO 4 2- as the indexes, According to the change of water quality of environmental water before and after dissolution, combined with the gray prediction method, the impact on the safety of hydropower station is analyzed. The results show that the gypsum rocks in the reservoir area are strongly corrupted by environmental water and groundwater in the current natural state.