【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。更多还原

【Abstract】 Several concrete faced rockfill dam projects are analyzed and the valley topography influences the anti-seepage 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.更多还原