摘要
首先基于等效岩体技术,开展圆柱体模型数值压缩试验,探究在不同裂隙密度等条件下破碎岩体的REV尺度和等效力学参数;然后提出基于岩体结构特征的破碎岩体围岩分类指标,最后给出不同类型破碎岩体的力学参数区间,为节理岩体工程稳定性评价中力学模型的建立和力学参数的选取提供理论基础。
Firstly,based on equivalent rock mass technology,numerical compression tests were conducted on cylindrical models to explore the REV scale and equivalent mechanical parameters of fractured rock masses under different crack densities and other conditions;then,a classification index for fractured rock mass surrounding rock based on the structural characteristics of rock mass is proposed,and finally,mechanical parameter intervals for different types of fractured rock mass are given,providing a theoretical basis for the establishment of mechanical models and the selection of mechanical parameters in the stability evaluation of jointed rock mass engineering.
作者
童杰栋
胡浩
宋超
杨玲
石崇
Tong Jiedong;Hu Hao;Song Chao;Yang Ling;Shi Chong(Henan Hengyu Water Conservancy Engineering Co.,Ltd.,Xinyang 464000,China;Xinyang Guoxin Development Group Co.,Ltd.,Xinyang 464000,China;Institute of Geotechnical Engineering Science,Hohai University,Nanjing 210098,China)
出处
《山西建筑》
2023年第10期83-86,145,共5页
Shanxi Architecture
基金
国家自然科学基金(41831278,51679071)联合资助。
关键词
随机裂隙
破碎围岩
力学参数
离散元
结构面
random cracks
fractured surrounding rock
mechanical parameters
discrete element
structural plane
