动态设计中的小湾水电站边坡工程

小湾水电站边坡工程针对其两岸边坡的不同地形地质情况和要求，分别以左岸“强开挖弱支护”，右岸“弱开挖强支护”为设计原则进行边坡处理，初步提出了不同失稳机制与模式的针对性合理定量分析评价体系，对于深厚覆盖层分布，规模巨大的堆积边坡首次大规模采用预应力网板深孔锚索治理并取得了成功，还将动态设计理念渗透到了小湾水电站边坡的具体工程中。

Dynamic design of slope excavation works of Xiaowan Hydropower Station

This paper describes the design characteristics and overall principle of the slope excavation works of Xiaowan Hydropower Station and briefs the dynamic design of its upstream slopes. The principles of strong excavation and poor support in the left slope and weak excavation and strong support in the right slope were carried out in the practice according to the local geological conditions. It also puts forward the quantitative assessment system for the different non-stability mechanisms and modes and introduces the successful adoption of pre-stressed net-plate deep-hole anchorage cable in the big mass side slope. In addition, the dynamic design concepts are used in the practical works of Xiaowan Hydropower Station.