苗尾水电站右坝基边坡变形体加固施工技术

Reinforcement Construction Technology for Deformable Body of Right Dam Foundation Slope of Miaowei Hydropower Station

苗尾水电站右坝基上游侧边坡岩体在心墙基础切脚开挖完成后,受连续下雨等综合因素影响,边坡出现拉裂变形、表层滑塌,并形成较大体量的变形体,严重威胁工程安全。为确保右坝基边坡稳定,采用“锁脚、束腰、裹头、系统排水”的施工方案,对右坝基变形体进行加固处理。监测数据表明边坡安全稳定。该施工方案为同类工程高边坡变形体处理提供参考。

After the cutting foot excavation of the core wall foundation of the upstream side slope rock mass of the right dam foundation of Miaowei Hydropower Station is completed,affected by continuous rain and other comprehensive factors,the slope appears tensile crack deformation,surface collapse,and forms a large amount of deformation body,which seriously threatens the safety of the project.In order to ensure the stability of the right dam foundation slope,the construction scheme of“locking foot,girdling waist,wrapping head and systematic drainage”is adopted to reinforce the right dam foundation deformation.The monitoring data show that the slope is safe and stable.The construction scheme provides reference for the treatment of high slope deformation body of similar projects.