山东煤炭科技2025，Vol.43Issue(1)：101-105,5.DOI:10.3969/j.issn.1005-2801.2025.01.021
非均质结构对砂岩强度影响的模拟研究
Simulation Study on Influence of Heterogeneous Structure on Sandstone Strength
佟波 1刘怀喜 1刘小龙1
作者信息
- 1. 山东新巨龙能源有限责任公司,山东 菏泽 274918
- 折叠
摘要
Abstract
Aiming at the problem of mine accidents caused by the failure of heterogeneous roof in Datun Coal Mine in Xuzhou,Jiangsu Province,based on discrete element numerical simulation method,a sandstone sample with randomly distributed heterogeneous structure is established on the basis of PBM.The influence of homogeneity changes on the strength and failure characteristics of sandstone is studied.The results show that sandstone samples containing weak heterogeneous particles have lower crack initiation stress,peak value stress,and elastic modulus than standard sandstone samples.The crack initiation stress,peak value stress,and elastic modulus of sandstone samples containing hard heterogeneous particles show different variation laws according to different content of heterogeneous particles;The greater the difference in properties between heterogeneous particles and sandstone particles,the greater the discreteness of the sample's crack initiation stress,peak value stress,and elastic modulus.关键词
非均质结构/强度特征/裂纹扩展/离散元Key words
heterogeneous structure/strength characteristics/crack propagation/discrete element分类
矿山工程引用本文复制引用
佟波,刘怀喜,刘小龙..非均质结构对砂岩强度影响的模拟研究[J].山东煤炭科技,2025,43(1):101-105,5.
