岩土力学2017，Vol.38Issue(1)：205-213,9.DOI:10.16285/j.rsm.2017.01.026
基于广义Hoek-Brown准则的节理岩体强度及变形参数随机分析
Stochastic analysis of strength and deformation parameters of jointed rock mass based on generalized Hoek-Brown criterion
摘要
Abstract
Uniaxial compressive strength,rock quality designation (RQD) and statistics data of joints survey are used as input parameters to construct probabilistic models based on mechanical tests and field surveying data from Muliashi Open Pit.These probabilistic models are well fitted by using the chi-square test.From the generalized Hoek-Brown criterion,the probabilistic distributions of strength and deformation parameters of jointed rock mass are obtained by using the stochastic analysis in the MATLAB program and Monte Carlo method.Spearman's rank correlation coefficient is applied to analyze the correlations between strength parameters and each input parameters.Based on the practical slope engineering,the slope stability is evaluated from the perspective of failure probability.The proposed method comprehensively considers the uncertainty and variability of jointed rock mass parameters,and can provide a valuable reference for safety decisions of practical engineering projects.关键词
节理岩体/Hoek-Brown准则/岩体强度/随机分析Key words
jointed rock mass/Hoek-Brown criterion/rock mass strength/stochastic analysis分类
矿业与冶金引用本文复制引用
程爱平,肖术,许梦国,王平,刘艳章..基于广义Hoek-Brown准则的节理岩体强度及变形参数随机分析[J].岩土力学,2017,38(1):205-213,9.基金项目
国家自然科学基金项目(No.51604195,No.51074014).This work was supported by the National Natural Science Foundation of China (51604195,51074014). （No.51604195,No.51074014）
