典型文献
Experimental study on the influence of hydrostatic stress on the Lode angle effect of porous rock
文献摘要：
To investigate the deformation mechanisms of rock under hydrostatic stress,destructive experiments were conducted on sandstone under different levels of hydrostatic stress and stress Lode angles.The results reveal that the shape of the strength envelope on the π plane gradually changes from the shape of the Lade criterion to the shape of the Drucker-Prage criterion with an increase in hydrostatic stress.Normally,there exists a deviation between the strain and stress paths for porous rocks on the k plane,and the deviation decreases with an increase in stress Lode angle and hydrostatic stress.A rock failure hypothesis based on the rock porous structure was proposed to investigate the reasons for the above-mentioned phenomena.It was found that the shear expansion in the minimum principal stress direction is the dominant factor affecting the Lode angle effect(LAE);the magnitude of the hydrostatic stress induces the variation of the porous structure and influences the shear expansion.Therefore,the hydro-static stress state affects the LAE.The failure hypothesis proposed in this paper can clarify the hydrostatic stress effect,LAE,and the variation of the rock strength envelope shape.
文献关键词：
中图分类号：
作者姓名：
Zhenlong Song;Zhenguo Zhang;P.G.Ranjith;Wanchun Zhao;Chao Liu
作者机构：
Department of Earth and Space Sciences.Southern University of Science and Technology,Shenzhen,Guangdong 518055,China;State Key Laboratory of Coalmine Disaster Dynamics and Control,Chongqing University,Chongqing 400030,China;Deep Earth Energy Research Laboratory,Department of Civil Engineering,Monash University,Melbourne,Victoria 3800,Australia;School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China;School of Electrical Engineering & Information.Northeast Petroleum University,Daqing 163318,China
文献出处：
引用格式：
[1]Zhenlong Song;Zhenguo Zhang;P.G.Ranjith;Wanchun Zhao;Chao Liu-.Experimental study on the influence of hydrostatic stress on the Lode angle effect of porous rock)[J].矿业科学技术学报（英文版）,2022(04):727-735
A类：
Lade,Prage
B类：
Experimental,study,hydrostatic,stress,Lode,effect,porous,To,investigate,deformation,mechanisms,under,destructive,experiments,were,conducted,sandstone,different,levels,angles,results,reveal,that,shape,strength,envelope,plane,gradually,changes,from,criterion,Drucker,increase,Normally,there,exists,deviation,between,strain,paths,rocks,decreases,failure,hypothesis,structure,was,proposed,reasons,above,mentioned,phenomena,It,found,shear,expansion,minimum,principal,direction,dominant,affecting,LAE,magnitude,induces,variation,influences,Therefore,state,affects,this,paper,can,clarify
AB值：
0.421492
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