关键词: 普西桥水电站, 进水口, 边坡稳定性分析, 滑塌体

Abstract: During excavation, the slope at left bank intake of Puxiqiao hydropower station collapsed and destabilized many times, and the upper slope at left dam abutment was cracking, which not only endangerd the construction safety of the dam, but also restricted the construction of diversion tunnel and flood discharge tunnel. Combined with the geological conditions and construction process, this paper analyzes the cause reasons of the collapse, calculates the stability of the intake slope and upper slope by using 2D limit-equilibrium method, determines the support measures for the slope based on the calculation results, and gives out the guiding advices on the treatment scheme of the sliding rock mass. The reinforcement construction was successful. At present, Puxiqiao hydropower station is impounded, and the slope is stable.

Key words: Puxiqiao hydropower station, intake, slope stability analysis, sliding rock mass