摘要
构皮滩水电站W24岩溶系统规模大,管道复杂多变,形态多样,跨越地下厂房三大洞室区,直接影响洞室围岩稳定与防渗幕体的形成。通过前期与施工期工程地质勘察研究,查明了岩溶系统的空间分布特征,在施工过程中采取多种工程措施进行了处理。其处理原则为:及时对洞室边墙水平距离15 m、顶拱高程以上垂直距离20 m范围以内的所有岩溶管道予以清理,并作回填混凝土处理。
W24 karst system of Goupitan Hydropower Station is characterized by large scale, complicated passage, various styles and crossing 3 chamber areas, which directly affect the stability of surrounding rock of chamber and the formation of anti - seepage curtain. We find out the spatial distribution features of karst system through geological exploration at earlier stage and during construction period, and take various engineering measures in construction. The treatment principle is to clean all the karst passages within the range of 15m in horizontal distance of chamber side wall and 20 m above arch crown elevation in vertical distance and to carry out concrete backfill.
出处
《人民长江》
北大核心
2010年第22期12-15,共4页
Yangtze River
关键词
W24岩溶系统
围岩稳定
防渗帷幕
工程处理
构皮滩水电站
W24 karst system
surrounding rock stability
anti -seepage curtain
engineering treatment
Goupitan Hydropower Station
