基于离散元与光滑粒子流体力学耦合的高浓度尾砂浓密过程仿真  

Simulation of Thickening Process for High Solids Concentration Tailings Using Coupled DEM-SPH Method

作　　者：熊有为[1,2] 刘福春 陈伟[3] 刘恩彦 雷显权[1,2] XIONG Youwei;LIU Fuchun;CHEN Wei;LIU Enyan;LEI Xianquan(CINF Engineering Co.,Ltd.,Changsha 410003,China;Hunan Province Research and Development Center for Applications of Safe and High-efficient Mining Technologies in Deep Underground Mine,Changsha 410003,China;School of Energy Science and Engineering,Central South University,Changsha 410083,China)

机构地区：[1]长沙有色冶金设计研究院有限公司,湖南长沙410003 [2]深井矿山安全高效开采技术湖南省工程研究中心,湖南长沙410003 [3]中南大学能源科学与工程学院,湖南长沙410083

出　　处：《金属矿山》2021年第11期19-24,共6页Metal Mine

基　　金：“十三五”国家重点研发计划项目(编号:2016YFC0801600,2018YFC0604600)。

摘　　要：为实现对高浓度尾砂浓密过程的动态可视化观测和定量化表征,弥补常规物理相似模拟和数值模拟方法适用性较差的不足,提出了一种基于离散元(DEM)和光滑粒子流体动力学(SPH)耦合的高浓度尾砂浓密仿真方法,并采用该方法对某矿全尾砂浓密工艺进行了模拟仿真。通过建立与工业机结构一致的全尺寸深锥浓密机模型,基于物理试验标定固液两相流体仿真参数,以浓密机底流浓度作为主要评价指标,将仿真结果与现场生产情况进行对比,结果显示二者误差极小,验证了仿真模型的准确性和可靠性,为矿山充填浓密工艺研究与优化设计提供了一种新方法。In order to realize the dynamic visual observation and quantitative characterization of the dense process of high-concentration tailings,and make up for the lack of applicability of conventional physical similarity simulation and numerical simulation methods,a method based on discrete element(DEM)and smooth particle fluid dynamics(SPH)coupled high-concentration tailings thickening simulation method is proposed,and based on this method,the unclassified tailings thickening process is simulated of a mine.Through the establishment of a full-scale deep cone thickener model consistent with the structure of the industrial machine,the simulation parameters of solid-liquid two-phase fluid are calibrated based on physical tests,and the underflow concentration of the thickener is used as the main evaluation index.The simulation results are compared with the on-site production situation.The results show that the error of the two is extremely small,which verifies the accuracy and reliability of the simulation model,and provides a new method for the research and optimization of mine filling dense technology.

关 键 词：膏体充填 尾砂浓密 数值仿真 离散元方法 光滑粒子流体动力学方法 DEM-SPH耦合 

分 类 号：TD853[矿业工程—金属矿开采]