尾矿库溃坝泥石流的演进过程及防护措施研究  

Study on Evolution of Debris Flow from Dam Break and Protection Measures

作　　者：刘洋[1] 齐清兰[1] 张力霆[1] 

机构地区：[1]石家庄铁道大学土木工程学院,河北石家庄050043

出　　处：《金属矿山》2015年第12期139-143,共5页Metal Mine

摘　　要：以实际工程为例,建立三维溃坝数值模型,对尾矿库溃坝泥石流的演进规律进行三维数值模拟,得到淹没范围以及溃坝泥石流速度、堆积厚度随时间的变化规律,并通过实测资料对数值模拟结果进行验证。将拦挡导流坝应用于实际工程中,旨在通过人为改变泥石流的演进方向,最大程度地降低泥石流灾害。通过分析设置拦挡导流坝前后的泥石流运动特征,证明拦挡导流坝不仅对泥石流起到导流作用,还可拦蓄一部分泥石流,有效地减小泥石流向下游的演进距离。Taking a practical project for example,the three dimensional numerical model of dam break is set up to make numerical simulation on the evolution law of debris flow from dam break and obtain the submerged area and the law of velocity and accumulation depth varied with time. Then,the experimental data verified the numerical simulation results. Applying the landslide and diversion dam to the practical engineering aimed at artificially changing the evolution direction of debris flow to maximumly reduce the damage. By analyzing the protection effect of the landslide and diversion dam to the debris flow,it is verified that the landslide and diversion dam could not only guide the debris flow,but also retain parts of debris flow. Therefore,it can effectively reduce the evolution distance of debris flow to the downstream.

关 键 词：尾矿库 溃坝 泥石流 拦挡导流坝 

分 类 号：TD926[矿业工程—选矿]