苗尾水电站右岸倾倒变形边坡加固设计

Reinforcement for deformed and toppled slope at right bank of Miaowei Hydropower Station

苗尾水电站在施工中出现多次坝基边坡倾倒变形。在调研坝址区工程地质水文气象资料的基础上,分析了坝址区岩体结构及岩体倾倒变形的基本特征、倾倒岩体的稳定性及失稳机制,并据此得出大坝右岸坝基边坡倾倒变形的变化规律。在此基础上结合现场实际,采取了一系列必要的工程措施进行加固处理,相关经验可供类似工程借鉴。

During the construction of Miaowei Hydropower Station,the toppling and deformation of dam foundation appeared several times. On the basis of investigating the geological,hydrological and meteorological data of the dam site,the basic characteristics of rock mass structure and rock toppling and deformation,the stability and instability mechanism of toppling rock were analyzed. So the toppling and deformation law of left bank dam foundation was obtained. In combination with the field practice,a series of necessary engineering measures were adopted to reinforce the dam foundation. The relevant experiences can be used for reference of similar engineering in future.