矿山泥石流运动堆积过程数值模拟研究  

Numerical simulation study on movement and accumulation process of mine debris flow

作　　者：谭国荣[1] 韩超超[1] TAN Guorong;HAN Chaochao(School of Environmental and Resources,Southwest University of Science and Technology,Mianyang Sichuan 621010,China)

机构地区：[1]西南科技大学环境与资源学院

出　　处：《化工矿物与加工》2019年第8期55-58,共4页Industrial Minerals & Processing

摘　　要：基于特征线算子分裂法有限元思想,建立了一种求解矿山泥石流流动特性的有限元数值模型。该模型在每一个时间步长内,采用算子分裂法将泥石流方程分裂为扩散项、对流项、泥深修正项和平均流量校正项;对流项采用特征线Galerkin法显式时间离散。以刘希林等基于某矿山泥石流地质事件所建立的连续堆积物理实验为依据,采用提出的计算模型对某矿山泥石流地质事件进行连续堆积数值模拟。模拟结果与物理实验结果、相关文献计算结果吻合较好。表明本数值模型具有较高的计算精度,可为矿山泥石流地质灾害的预防和防治提供一定的技术支持。Based on the idea of characteristic operator splitting finite element method,a finite element numerical model for calculating the flow characteristics of mine debris flow is established.In each time step,the operator splitting method is used to split the debris flow equation into diffusion term,convection term,mud depth correction term and average flow correction term and the characteristic line Galerkin method is used for explicit time dispersion of convection term.Based on the physical experiment of continuous accumulation made by Liu Xilin and the others from the geological events of debris flow in a mine,the proposed model is used to simulate the continuous accumulation of debris flow geological events in the mine.The simulation results are in good agreement with the physical experiment results and the calculation results of related literature.It shows that the numerical model has a high accuracy and can provide some technical support for the prevention and control of the geological hazard of mine debris flow.

关 键 词：矿山泥石流 地质灾害 特征线算子分裂有限元 数值模拟 堆积高度 

分 类 号：P642.23[天文地球—工程地质学]