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库水在向坝基运移的过程中,所产生的水与坝基岩石之间,水与帷幕及混凝土之间物理化学作用,导致形成不同的坝基水质特征。通过对坝基水质资料分析,结果表明,坝基水化学场是坝基渗流场的重要组成部分,水的pH值、化学成分和化学类型的形成均受制于坝基地下水的径流条件,可依据水质的特征将坝基划分出不同的水文地质单元,即强径流带、缓径流带和孤立水体带。
During the migration of reservoir water to the dam foundation, the physical and chemical interactions between the water produced and the rocks in the dam foundation, the water and the curtain and the concrete lead to the formation of different dam foundation water quality characteristics. Based on the analysis of the dam foundation water quality data, the results show that the dam foundation hydration field is an important part of the dam foundation seepage field. The formation of water pH value, chemical composition and chemical type are subject to the runoff conditions of groundwater in dam foundation. According to the characteristics of water quality The dam foundation is divided into different hydrogeological units, namely strong runoff zone, slow runoff zone and isolated water zone.