乌东德水电站边坡岩体卸荷特征及稳定性评价

就水电工程而言，高陡边坡岩体卸荷可能导致边坡整体或局部失稳，对水电工程的施工及运行安全构成威胁。以乌东德水电站坝址区高陡岩质边坡为研究对象，在边坡卸荷岩体宏观地质特征、渗透特征及弹性波特征3方面研究的基础上，综合分析确定了坝址区边坡岩体卸荷的水平深度及特征，并就卸荷带岩体总体稳定性进行了分析评价。总体认为，乌东德水电站坝址区边坡岩体卸荷变形微弱，边坡总体稳定性较好。 

Unloading characteristics of slope rock mass of Wudongde Hydropower Station and stability evaluation

Rock mass unloading of high and steep slope may lead to losing stable of the whole or part of the slope, which will endanger the construction and operation of hydropower projects. Taking the high and steep rock slopes at the dam site of Wudongde Hydropower Station as the research object, through the investigation of the macroscopic geological features, seepage characteristics, and the elastic wave characteristics of the unloaded slope rock mass, the horizontal depth and characteristics of the slope rock mass unloading at the dam site are analyzed and identified, and the overall stability of the rock mass in the unloaded zone are evaluated. It can be concluded that the unloading deformation of the slope rock mass is slight and the slopes generally remain stable. 