摘要
岩石强度破坏理论是岩石力学与工程问题的理论基础。本文推广了适用于金属玻璃材料拉伸破坏下的椭圆准则强度理论运用于岩石材料,开展如下主要工作:导出椭圆准则在o-σ_1σ_2σ_3坐标系下的描述形式,再选取三组不同类型的岩石式样,观察每组岩石式样的常三轴实验数据与椭圆准则强度曲线的偏离程度。结果表明,每组式样的实验数据点总体上在椭圆准则强度曲线附近,偏差较小。该准则对于岩石材料是适用的。
The theory of rock strength destruction is the theoretical basis of rock mechanics and engineering problems.The ellipse criterion which could be applicable to the tensile fracture criterion of metallic glass.Was used to rock material the following main work is carried out:exporting the description form of ellipse criterion in o-σ1σ2σ3 coordinate system,selecting three different types of rock patterns and observing the deviation degree of the triaxial experimental data of each type and the strength curve of the ellipse criterion.In general,the experimental datum of each group of patterns are near the ellipse criterion strength curve,and the deviation is small.This criterion can be applicable to rock materials.
作者
吴强杰
王宝宁
WU Qiangjie;WANG Baoning(School of Safety Engineering,North China Institute of Science and Technology,Yanjiao,065201,China)
出处
《华北科技学院学报》
2019年第2期55-60,共6页
Journal of North China Institute of Science and Technology
基金
中央高校基本科研业务费资助项目(3142018069)
关键词
破坏判据:椭圆准则
岩石强度
三轴实验
rock pattern
rock mechanics and engineering
rock strength theory
ellipse criterion
