面板堆石坝趾板设计方法探讨  

Discussion on toe slab design method ofconcrete faced rockfill dam

作　　者：肖化文[1] 

机构地区：[1]长江水利委员会设计院,湖北武汉430010

出　　处：《人民长江》2004年第11期27-29,共3页Yangtze River

摘　　要：在混凝土面板堆石坝中,趾板是大坝表面防渗体系与地基防渗体系的连接构件,其主要作用是防渗。趾板既是基础灌浆的工作平台,也是周边缝的依托,因此其作用是很特殊的。趾板的特殊地位决定了趾板的设计涉及的因素很多,采用不同的设计方法对这些因素的考虑是不同的。结合典型的具体工程实例,对目前采用的趾板设计的方法、趾板设计中应考虑的相关因素进行了较详细的讨论。认为:以"Y"线作为趾板结构控制线,概念明确,应用方便,且可采用便于施工的平趾板型式;采用"4+X"的趾板设计思想,趾板的设计和基础开挖灵活经济,因此更为科学合理。For concrete-faced rockfill dam, toe slab is the connecting element between seepage prevention system of dam surface and seepage prevention system of foundation, and mainly functions as seepage prevention. Toe slab is the work platform for foundation grouting and the support of peripheral joint and so it possesses special functions. The special role of toe slab determines that its design involves various factors and different design methods involve different considerations on these factors. In combination of typical project case, the detail discussion on correlative factors in toe slab design and design method are carried out. It is considered that taking “Y” line as the control line of toe slab structure characterizes clear concept, easy application and the plate-type toe slab which is convenient for construction can be adopted. The “4+X” toe slab design concept makes toe slab design and foundation excavation easy and economy, so, it is more scientific and reasonable.

关 键 词：面板堆石坝 趾板设计 Y线 防渗 

分 类 号：TV640.3[水利工程—水利水电工程]