某尾矿库渗流稳定性的数值模拟

Numerical Simulation of the Seepage Stability of A Tailing Reservoir

为某尾矿库的安全生产,防治由渗流引发的尾矿库灾害事故,利用FLAC3D计算软件对尾矿库进行渗流数值模拟计算,结果表明,在冲沟的位置有较大的速度矢量,对流沙的裹挟会使局部危害加剧;从图上可以知道水头、梯度和比降最大值的地方相应的动水压力最大,所以最容易发生渗流破坏,造成尾矿库事故;所取断面A-A的坝坡坡角β明显大于使坝坡稳定的安全角度。FLAC3D软件可以比较好地模拟计算尾矿库的渗流,对尾矿库的安全生产有一定的参考价值和指导意义。

To ensure the safe operation of tailing reservoir and to prevent and control its disaster accident due to seepage, FLAC^3D is used to carry out the seepage numerical simulation calculation of the tailing reservoir. The result shows that there is a large speed vector at the gully, which can wrap the flowing sands and therefore, intensify the local damage. It is known from the figure that the dynamic pressure is the largest where the water head, gradient and hydraulic slope are the maximum, and the corresponding part is most likely to be destroyed by seepage, leading to an accident of the reservoir. The chosen section A-A＇s dam slope angle is evidently larger than the dam stability angle. FLAC^3D software can be used to do a better simulation calculation of tailing reservoir＇s seepage, which can be of certain reference and guidance importance to the safe operation of tailing reservoir.