摘要
考虑了力矩效应的存在对顺层岩质边坡稳定性的影响。当存在力矩效应时,剪切面上的剪应力和正应力不是均匀分布的,在剪切过程中存在一个调整过程,并在局部集中。当力矩效应较弱时,结构面上的应力可视为均匀分布;随着力矩效应的增大,正应力和剪应力都增大,出现非均匀分布,在局部表现为应力集中,并且出现局部破坏,而在整体上表现为力矩平衡和受力平衡。当剪切力大于抗剪强度时,则宏观上出现边坡失稳。同时根据应力集中部位的不同划分了不同的边坡破坏形式。
The model of moment of force was introduced to the bedding rock slop stability,and the instability process was analyzed.When the force moment exists,the shear stress and the support stress are not the even distribution.There is a process alignment procedure in cuts.The stress concentrate in some part cause the existence of shearing moment.Along with increasing of force moment,the supports stress and the shear stress all increase.The non-uniform distribution appears.The stress is concentrated partially,and the rock slope appears partial failure.When the shear force is bigger than the shear strength,the macroscopic instability appears.It is also divided the different modes of slope instability based on stress concentrated zone.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2011年第5期762-765,共4页
Journal of China Coal Society
基金
中国科学院工程地质力学重点实验室开放基金资助项目
国家自然科学基金重点资助项目(41030750)
中央高校基本科研业务费专项资金资助项目(2010QNA5)
关键词
力矩效应
顺层岩质边坡
结构面
受力状态
剪切强度
moment of force
bedding rock slope
structural plane
stress state
shear strength
