维普中文期刊产品整合服务

A review of fracture mechanic behaviors of rocks containing various defects

查看全文 作　　者：Fei [1,2]Zhao;Zhenming [1,2]Shi;Songbo [1,2]Yu;Hongchao [1,2]Zheng 高影响力作者 机构地区：[1]Department of Geotechnical Engineering,College of Civil Engineering,Tongji University,Shanghai 200092,China;[2]Key Laboratory of Geotechnical and Underground Engineering,Ministry of Education,Tongii University,Shanghai 200092,China高影响力机构 出　　处：《Underground Space》索引2023年第5期,共14页高影响力期刊 基　　金：supported by the National Key Research and Development Program of China,(Grant No.2019YFC1509702). 摘　　要：The existence of defects in a rock mass is a vital factor complicating the mechanical response of the rock mass under stress.The characteristics of defects control the rock mass’s mechanical behaviors.This report reviews the experimental studies on the influence of simulating the internal defects of rock mass’s mechanical properties.The effects of preexisting defects(shape,size,number,angle,and other factors)on the mechanical properties and failure modes of the rock are investigated from the perspectives of rock failure and fracture mechanics.The fracture propagation mechanisms of different defective rock masses are analyzed by studying the stress state of different defective rock masses under uniaxial compression.After the defective rock samples with varying inclination angles are destroyed,the relationship among the compressive strength,the fracture propagation,and the failure characteristics is explored.The primary findings are as follows.The increase in the size and number of defects rapidly damages the mechanical properties of the rock and intensifies defect penetration and expansion.The rock mechanics characteristics of fissured rocks with different inclination angles show two primary variations:one is a continuous increase,and the other is a decrease followed by an increase.This result is strongly related to the failure pattern of rocks with preexisting fissures.This investigation is crucial for further studying the failure modes of complex defective rock masses and the geotechnical engineering related to defective rocks. 关 键 词：Rock mechanics Preexisting defects Failure patterns Fracture characteristics
相关文献

参考文献(80)

引证文献(4)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费