炭质泥岩三维动静组合下岩石变形机理及吸收能影响研究  

Impact on Rock Deformation and Absorption Energy Based on 3D Dynamic and Static Combination of Carbonaceous Mudstone

作　　者：杨蒙 YANG Meng(Henan Polytechnic University, Jiaozuo 454003, China)

机构地区：[1]河南理工大学土木工程学院,河南焦作454003

出　　处：《洛阳理工学院学报（自然科学版）》2021年第4期39-46,共8页Journal of Luoyang Institute of Science and Technology：Natural Science Edition

摘　　要：对岩石进行常规三轴压缩试验及三维动静组合试验,分析岩石在不同冲击气压下吸收能与峰值应力、应变关系,不同应力状态与峰值应力、应变关系,轴压所做功与吸收能关系。研究发现:可以从岩石吸收能角度描述岩石破坏程度,峰值应变与吸收能有较好的线性增长关系,峰值应力与吸收能有较好的指数型增长关系,轴压的增大导致岩石吸收能减小,而围压的增大导致岩石吸收能增加。Based on the conventional triaxial compression test and the three-dimensional dynamic and static combination test on the rock,this paper analyzes the relationship between the absorption energy and the peak stress under different pressures,and between the different stress state and the peak stress and strain and between work from axial compression and energy absorption.The study shows that the rock failure can be described with the absorption energy.The peak stress and absorption energy grow linearly and exponentially,and the increase of axial pressure leads to the decrease of rock absorption energy,while the increase of confining pressure leads to the increase of rock absorption energy.

关 键 词：炭质泥岩 常规三轴 能量耗散 岩石强度 

分 类 号：TU458[建筑科学—岩土工程]