摘要
简述了Mohr-Coulomb强度准则、抛物线型Mohr强度准则和双曲线型Mohr强度准则,并采用3种高应力下岩石的真三轴试验结果对这3种强度准则进行对比分析。研究结果表明:在高应力条件下,硬岩的试验值与MohrCoulomb强度准则和双曲线型Mohr强度准则的预测值均比较接近。Mohr-Coulomb强度准则是线性强度准则,双曲线型Mohr-Coulomb强度准则是非线性强度准则,因此,可认为双曲线型Mohr强度准则更适合用于描述高应力条件下岩石的强度变形特征。
Comparative analysis of Mohr-Coulomb strength criterion,parabolic Mohr strength criterion and hyperbolic Mohr strength criterion was presented in this paper based on the result of true triaxial test on three kinds of rocks under high stress. Research results show that in the presence of high geostress,the predicted values of hard rock using Mohr-Coulomb strength criterion and hyperbolic Mohr strength criterion are close with the experimental value.Mohr-Coulomb strength criterion is a linear strength criterion; whereas hyperbolic Mohr-Coulomb strength criterion is a nonlinear strength criterion. Therefore,the hyperbolic Mohr strength criterion is more suitable for describing the strength and deformation characteristics of rock under high stress.
出处
《长江科学院院报》
CSCD
北大核心
2016年第4期81-85,共5页
Journal of Changjiang River Scientific Research Institute
基金
国家自然科学基金项目(41541021
41002108)
长江科学院开放研究基金资助项目(CKWV2014207/KY)