基于流固耦合模型分析库水位对尾矿坝的影响

尾矿库水位是影响坝体安全的重要因素之一,针对库水位变化对尾矿坝稳定性的影响问题,建立考虑超孔隙水压力作用下的流固耦合数学模型,利用有限差分程序FLAC3D进行数值求解.模拟了某尾矿库在不同库水位时的稳定性,得出库水位的升高对尾矿坝影响规律.即随着库水位的升高,尾矿坝浸润线升高,安全系数降低,尾矿坝坝体中部的剪应力逐渐增...

Analysis on Influence of Reservoir Water Level on Tailings Dam Based on Fluid-Solid Coupled Model

Reservoir water level is an important factor for the security of tailings dam.According to the problem of tailings dam stability by variation of reservoir water level,this paper established a fluid-solid coupled mathematic model under the excess pore water pressure,using the finite difference method FLAC3D to solve the solution.The paper simulates stability of a tailings dam with different reservoir water levels and the law of influence of reservoir water level on stability of tailings dam is obtained.With rising of water level,the seepage line was rising,and factor of safety descended.From analysis of contours of shear stress distribution,it is shown that the shear stress in the middle of tailings dam increased with a rise of reservoir water level.There was bigger shear stress in the embankment near the starter dam,where was the location of dam instability.This paper has some referential values for the study on stability of tailings dam.