三维随机渗流摄动有限元模拟研究  

Simulation research of random seepage field by 3-D perturbation stochastic finite element method

作　　者：宋会彬[1] 戴海旭[1] 

机构地区：[1]中国恩菲工程技术有限公司,北京100038

出　　处：《中国矿山工程》2016年第5期77-80,共4页China Mine Engineering

摘　　要：在非确定性渗流研究中,本文考虑渗透系数的空间随机性,基于摄动随机有限元法,推导相应的渗流场随机分析中渗流响应量(水头)的随机响应公式,进而实现三维稳定渗流场随机有限元分析。通过一个算例,将三维摄动随机有限元法计算的随机渗流场与蒙特卡罗法计算的渗流场进行对比,验证自编三维随机渗流摄动有限元程序的正确性和可行性。In the study of non-deterministic seepage,considering the spatial randomness of permeability coefficient,the formulas of seepage response variable（water level） in stochastic seepage analysis are deduced based on perturbation stochastic finite element method,and then the stochastic analysis of 3-D steady seepage field is performed.Finally,a numerical example is given and discussed.The correctness and feasibility of the self-made 3-D seepage perturbation stochastic finite element program is proved by comparing the seepage field that calculated by 3-D perturbation stochastic finite element method and Monte Carlo stochastic FEM.

关 键 词：摄动随机有限元 蒙特卡罗法 渗流计算 

分 类 号：TV649[水利工程—水利水电工程]