尾矿坝内透镜体对浸润线影响的数值模拟

Numerical Simulation for the Effect on Lens to Saturation Line in Tailings Dam

应用数值模拟方法,研究泥夹层透镜体对尾矿坝浸润线的影响。结果显示:透镜体位于浸润线及其以下附近区域才会对浸润线的埋深和形状产生影响,分布在浸润线以上或远离浸润线均不会对浸润线产生影响,但会改变透镜体及其周边局部范围的渗流场。透镜体的尺度沿水平方向增大时,对坝体的稳定性影响极大。透镜体的尺度沿垂直方向增大时,浸润线的形状逐渐变成"S"型。这些研究发现,对尾矿库的安全生产会有一定指导意义。

The effect of lens on the saturation line of tailings dam was studied by numerical simulation. The results showed that the lens which located on or under the nearby saturation line would have an impact on the burial depth and shape of saturation line,otherwise,it would not affect the saturation line but change seepage field of lens.The scale of lens increasing along the horizontal direction would greatly influence the stability of dam.And when the scale of lens increased along the vertical direction,the shape of saturation line gradually became an ' S' type.These study results had certain guiding significance on the safety management of tailings dam.