Numerical Simulation of Overtopping and Dam Collapse Process in Tailings Ponds Based on Flow-3D
Tailings pond is a high-risk source with high potential energy.Once a dam breaks,it will pose a serious threat to the lives and property of downstream residents.In order to improve the prediction and emergency support capabilities of tailings dam failure disasters,this article takes a given tailings dam as the engineering background,conducts indoor model experiments of tailings dam failure,and combines Flow-3D numerical simulation technology to conduct in-depth research on the evolution process of tailings flow after overtopping of tailings dam failure.The indoor model experiment and numerical simulation results were compared,and the dam failure process was basically consistent,verifying the accuracy of the small-scale model experiment and the reliability of the numerical simulation.The results of numerical simulation research indicate that the inundation height and cross-sectional flow rate of the dam break show a rapid increase in the early stage and a slow decrease in the later stage as the dam break time changes,and as the evolution distance increases,the peak values of the inundation height and cross-sectional flow rate significantly decrease;The downstream terrain affects the flow velocity and evolution direction of the dam break;The tailings flow of dam break occurs a phenomenon of "climbing" at the downstream bend,with different submergence heights on both sides of the bend,and the submergence height on the concave bank of the bend is higher than that on the other side;At the connection between the valley and the river channel,the collapsed water spreads towards both upstream and downstream sides of the river channel,forming an "alluvial fan" at the entrance of the river channel to block the river channel.
tailings pondmodel testingoverflowing dam failurenumerical simulation
NETL
NSTL
万方数据
维普
