天花板水电站厂房后边坡稳定分析与支护设计

Stability Analysis and Support Design for the Back Slope behind the Powerhouse of Tianhuaban Hydropower Station

天花板水电站厂房后边坡自然坡高约243 m,永久边坡开挖高度85 m。边坡稳定分析与支护设计以地质专业提供的岩体力学参数为基础,对原始边坡的稳定性进行分析判断。根据规范要求工况,对开挖边坡的滑动稳定与楔形体稳定进行了计算,对关键支护措施的参数进行了研究,从而选取了合理的开挖坡比与支护参数。

The back slope behind the powerhouse of Tianhuaban Hydropower Station is about 243 m high and the permanent excavation height is 85 m. The slope stability is analyzed based on the rock mass mechanical parameters for designing the support. According to the requirements of Specification, the sliding and wedge stabilities of excavated slope are calculated and the supports are also studied, and the reasonable excavated slope ratio and support parameters are finally selected.