雅砻江某水电站坝址左岸江水水化学特征研究

雅砻江某水电站左岸坝肩地表无泉水出露，勘探揭露地下水露头也极为有限，多为尚未充水的干燥岩体。通过对江水水化学分析．运用聚类分析和水化学组分对比的方法，发现该电站左岸岸边有地下水隐伏排泄．并导致江水水化学异常，而且岸边排泄地下水按其水化学特征可分为两类。相当于赋存在左岸谷坡大理岩中的岩溶裂隙水和砂板岩中的风化裂隙水，为左岸谷坡水文地质以及地下水系划分的研究提供了重要的依据。

STUDY ON THE CHEMICAL CHARACTERISTICS OF WATER ON THE LEFT BANK OF YALONG RIVER DAM

There is no spring or limited groundwater at the left bank of the Yalong river dam, moreover, very.In order to study the situation of hydrogeology at the research region,a special method regarding the study of the chemistry of water collected from the river's left as supplement was introduced.That method is effective.Cluster analysis and among different components,along with the method of chemical analysis,there is insidious discharge of groundwater at the left bank, which results in the unusual water chemistry and two kinds of groundwater in terms of their chemical characteristics occurred,one is karst canny water in marble and the other is weathering canny water in sandstone. The recognization provided evidence for the study of hydrogeology and division of groundwater system in the area.