基于FEM-RSM-GA的边坡可靠度计算方法研究  

Research on Method for Calculating Slope Reliability Based on FEM-RSM-GA

作　　者：胡平安[1] 杨仕教[2] 杨海辉[2] 

机构地区：[1]湖南有色金属研究院,湖南长沙410015 [2]南华大学核资源与核燃料工程学院,湖南衡阳市421001

出　　处：《矿业研究与开发》2011年第5期95-98,共4页Mining Research and Development

基　　金：国家自然科学基金资助项目(50974076)

摘　　要：用随机有限元法计算实际边坡工程的可靠度和破坏概率需解决的关键问题是计算精度和运算效率。提出了基于FEM-RSM-GA的边坡工程的稳定性可靠度计算方法,以FLAC3D强度折减法(SRM)计算边坡工程的安全系数,建立响应面函数,利用遗传算法对可靠度指标和破坏概率优化求解。通过算例表明:该方法计算量小,用时少,可靠指标和破坏概率的相对误差分别为3%和6%,能满足实际边坡工程需求。The computational accuracy and operating efficiency are the key problems in calculating reliability and failure probability of the slope project by stochastic finite element method. A reliability calculation method of slope stability based on method of finite element - response surface method - genetic algorithm is presented in this paper, calculating the safety factor of slope project with strength reduction method （SRM） based on FLAG3D, and estabhshing response surface function, then getting the optimal solutions of the reliability index and failure probability with genetic algorithm. A numerical example shows that the method involves less arithmetic computation and less computing time, the relative error of reliability index and failure probability are 3 % and 6% respectively, which can meet the needs of the actual slope project.

关 键 词：边坡工程 可靠度 强度折减法 响应面法 遗传算法 

分 类 号：TD216[矿业工程—矿井建设]