河谷地形对面板坝防渗体系安全性的影响  

Influence of valley topography on the safety of CFRD anti-seepage systems

作　　者：宋文晶[1] 王彭煦[1] 

机构地区：[1]清华大学水沙科学与水利水电工程国家重点实验室(筹),北京100084

出　　处：《水力发电学报》2008年第4期94-100,共7页Journal of Hydroelectric Engineering

摘　　要：通过对实际工程案例的分析,河谷地形对面板防渗体系的影响主要在两个方面,基坑开挖形状和坝肩岸坡地形。本文通过引入摩擦接触来模拟堆石体与坝肩之间的接触关系,分析了不同岸坡坡度下堆石体的变形特性和岸坡发生转折的地形条件下堆石体的滑移性状,解释了面板在岸坡转折处发生破坏的原因。Several concrete faced rockfill dam projects are analyzed and the valley topography influences the antiseepage systems in two ways： one is the shape of bed ground, the other is the slope gradient of abutment. Friction contact model is introduced to simulate the contact between rockfill and abutment. It is shown that rockfill is inclined to happen bigger horizontal displacement in wide and plain valley. Arch action of narrow valley declines the horizontal displacement of rockfill. So the slippage of rockfill along the slope results in the fragmentation of concrete slab at the corner.

关 键 词：水工结构 面板裂缝 摩擦接触模型 面板堆石坝 河谷地形 

分 类 号：TV31[水利工程—水工结构工程]