Abstract：It is one of important issues to insure the stability of high rock slopes of a hydropower station during the construction. Generally，high rock slopes have the characteristics such as complex geologic conditions，large area and considerable height. The difficulty to ascertain a slope stability with the current stability parameters，for instance，the degree of slope stability, is drastic. To research the stability of some high rock slope of Xiaowan Hydropower Station，the measured surface displacement observation，the inclinometer，the multi-point displacement meter and the load of anchors are used to the slope analysis. The monitoring data are employed to analyze the reasons of the deformation of the high-slope and the development trend of the slope's stability. The analytical results show that the slope is stable. The results can provide reference to the other similar engineering projects.
