金沙江水电开发区域工程地质环境综合评价

金沙江所流经的川滇交界地区是中国西南典型的活动构造区，区内地震及地质灾害十分严重，所以在金沙江水电梯级规划中，进行该区域的工程地质环境系统评价尤为重要，本文选取对工程地质环境有较大影响的九种因素，从地壳稳定性、地面稳定性、岩土稳定性三方面建立层次分析模型。根据层次分析所取得的因素权重值，按好、较好、一般、较差、差5个等级进行工程地质环境质量综合评价及分工。工程地质环境特征的分区性向我们显示各梯级工程规划选址区所存在的重大工程地质问题。

COMPREHENSIVE ASSESSMENT OF ENGINEERING GEOLOGICAL ENVIRONMENT IN HYDROELECTRIC DEVELOPMENT ZONE, JINSHAJIANG RIVER

The intersection between Sichuan and Yunnan Provinces through which flows the Jinshajiang River, is a typical active tectonic zone in southwestern China. In this intersection zone, occur strong neotectonic activities accompanied by various endogenic and ectodynamic geological hazards. In this case, the engineering geological environmental system in this region should be evaluated in the planning of the Jinshajiang hydroelectrical gradient project. In this paper, nine factors closely related to the engineering geological environment are chosen to establish a hierarchical analysis model in terms of crust stability, ground stability, and rock and soil mass stability. The factor weighing values obtained from the hierarchical analysis are used to make a comprehensive assessment and zoning of the engineering geological environment quality in the following five categories: poor, relatively poor, normal, relatively good, and good. The zoning of the engineering geological environment indicates that some important engineering geological problems are present in the site selection regions for different gradient engineering projects.