真实地形下尾矿库溃坝尾砂流下泄过程数值模拟  

Numerical Simulation of Tailings Flow Discharge Process of Tailings Dam Break in Real Terrain

作　　者：刘晓峰 廖宗文 肖利兴 姚池 LIU Xiaofeng;LIAO Zongwen;XIAO Lixing;YAO Chi(China Ruilin Engineering Technology Co.,Ltd.,Nanchang 330031,China;Jiangxi Key Laboratory of Tailings Reservoir Engineering Safety,Nanchang 330031,China;School of Architecture and Engineering,Nanchang University,Nanchang 330031,China)

机构地区：[1]中国瑞林工程技术股份有限公司,江西南昌330031 [2]江西省尾矿库工程安全重点实验室,江西南昌330031 [3]南昌大学建筑工程学院,江西南昌330031

出　　处：《金属矿山》2023年第9期206-212,共7页Metal Mine

基　　金：国家自然科学基金项目(编号:51879127);江西省自然科学基金项目(编号:20192ACB20020)。

摘　　要：为了研究尾矿库溃坝尾砂流对下游敏感目标的影响,以江西省某尾矿库为研究对象,建立了真实三维地形数值模型,利用FLOW-3D三维流体力学软件模拟分析了该尾矿库分别在不同工况下溃坝下泄尾砂流在下游1 km范围内的输移时空变化特征。结果表明:溃坝尾砂流的发展方向、分布情况、水深以及泥沙淤积受真实三维地形变化影响较为明显,溃坝尾砂流主要分布于下游稻田和低洼地段,浅溪河作为主要行洪通道,水深变化和泥沙淤积情况较为明显,只有已搬离的浅溪村受到尾砂流淹没,洪水最远到达港口村西部鱼塘,其余村庄均未受到影响。所得结果可以为尾矿库安全运行管理和制定溃坝应急预案提供依据。In order to study the influence of tailings flow caused by dam break on downstream sensitive targets,a real three-dimensional terrain numerical model was established for a overhead tailings pond in Jiangxi Province.The FLOW-3D three-dimensional hydrodynamics software was used to simulate the temporal and spatial changes of tailings flow in the down-stream 1km range under different working conditions.The results show that:the development direction,distribution,water depth and sediment deposition of dam break tailings flow are obviously affected by the real three-dimensional terrain changes.The dam break tailings flow mainly distributes in the downstream paddy fields and low-lying areas.As the main flood passage,Qianxi River has obvious water depth changes and sediment deposition.Only the removed Qianxi Village is submerged by the tailings flow,as far as the fish pond in the west of Gangkou Village,the other villages were not affected.The results can provide the basis for the safe operation management of tailings pond and the formulation of dam break emergency plan.

关 键 词：尾矿库 FLOW-3D 溃坝 真实地形 数值模拟 

分 类 号：TD926[矿业工程—选矿]