为了评价金沙江阿海水电站坝址区地应力的分布特 征，进行了水压致裂法测试与分析。结果表明：应力量值较低，最大水平主应力方位呈NW向 。后者可以归结为坝址区地形地貌和水平构造应力的共同作用，并受到周边区域断裂构造的 影响。

In order to evaluate the characteristics of in - situ stress distribution in Ahai Hydro - power Stations dam site, Jinshajiang River , the hydro - fracturing measurement and analysis are conducted. Results reveal t hat the stress magnitude is relatively low and the maximum horizontal principal stress' direction is NW. The later character should be attributed to the combine d action of dam sites geomorphology and horizontal tectonic stress conditions, and is also influenced by the regional geostructural fractures.