典型文献
Influence of maximum principal stress direction on the failure process and characteristics of D-shaped tunnels
文献摘要：
To investigate the failure process and characteristics of D-shaped tunnels under different maximum principal stress directions θ,true-triaxial tests were conducted on cubic sandstone samples with a through D-shaped hole.The test results show that the failure process can be divided into 4 periods:calm,buckling deformation,gradual buckling and exfoliation of rock fragment,and formation of a V-shaped notch.With an increase in θ from 0° to 90°,the size of the rock fragments first decreases and then increases,whereas the fractal dimension of the rock fragments first increases and then decreases.Meanwhile,the failure position at the left side shifts from the sidewall to the corner and finally to the floor,whereas the failure position at the right side moves from the sidewall to the span-drel and finally to the roof,which is consistent with the failure position in underground engineering.In addition,the initial vertical failure stress first decreases and then increases.By comparing the results,the failure severities at different maximum principal stress directions can be ranked from high to low in the following order:90°＞60°＞30°＞45°＞0°.
文献关键词：
中图分类号：
作者姓名：
Linqi Huang;Xuefeng Si;Xibing Li;Fengqiang Gong;Yong Luo
作者机构：
School of Resources and Safety Engineering,Central South University,Changsha 410083,China;School of Resources Environment and Safety Engineering,University of South China,Hengyang 421001,China;School of Civil Engineering,Southeast University,Nanjing 211189,China
文献出处：
引用格式：
[1]Linqi Huang;Xuefeng Si;Xibing Li;Fengqiang Gong;Yong Luo-.Influence of maximum principal stress direction on the failure process and characteristics of D-shaped tunnels)[J].矿业科学技术学报（英文版）,2022(05):1125-1143
A类：
drel
B类：
Influence,maximum,principal,stress,failure,process,characteristics,shaped,tunnels,To,investigate,different,directions,true,triaxial,tests,were,conducted,cubic,sandstone,samples,through,hole,results,show,that,can,be,divided,into,periods,calm,buckling,deformation,gradual,exfoliation,rock,notch,With,from,size,fragments,first,decreases,then,increases,whereas,fractal,dimension,Meanwhile,position,left,shifts,sidewall,corner,finally,floor,right,moves,span,roof,which,consistent,underground,engineering,addition,initial,vertical,By,comparing,severities,ranked,high,following,order
AB值：
0.496379
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
