面板坝垂直缝失效渗流场有限元模拟

以班多面板堆石坝为例,用有限元方法计算了当面板缝局部失效时各种工况下的渗流场,系统分析了大坝在面板垂直缝局部失效后的稳定渗流场的规律和特点。通过分析计算结果,指出了面板缝的失效位置、失效缝宽、失效缝长以及垫层的渗透系数对等势线和浸润线的影响,并且对面板、垫层和接缝的设计提出建议。

FEM Seepage Analysis of Concrete Faced Rockfill Dam under the Cases of Vertical Joint Inactivation

The seepage field and stability of concrete-faced rockfill dam in Banduo Hydropower Project,when vertical joint inactivation are occurred to the face plate,are calculated by FEM method.Analyze the chiaracteristic and regularity of the dam when the vertical joints of face plate are partial inactived.Through analyzing the result,point out the effect to the saturation line and equipotential line by the position,width,length of the inactived vertical joints and the permeability coefficient of bedding material.And then bring forward some suggestion for the design of the face plate,bedding,and the joint.