岩石强度条件分析的理论研究

应用科学学报 ›› 2001, Vol. 19 ›› Issue (2): 103-106.

岩石强度条件分析的理论研究

李传亮, 孔祥言

中国科学技术大学力学系, 安徽合肥 230027

收稿日期:1999-11-11 修回日期:2018-08-02 出版日期:2001-06-30 发布日期:2001-06-30
作者简介:李传亮(1962-),男,山东嘉祥人,副教授,博士.

A Theoretical Study of Rock Strength Conditions

LI Chuan-liang, KONG Xiang-yan

Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027 China

Received:1999-11-11 Revised:2018-08-02 Online:2001-06-30 Published:2001-06-30

摘要/Abstract

摘要： 在岩石强度条件分析中,必须使用有效应力.目前广泛应用的Terzaghi方程只适用于胶结程度较低的疏松点接触多孔介质;而对于胶结程度较高的致密岩石,应使用结构有效应力.用正应力进行岩石强度条件分析,结论过于安全;用Terzaghi有效应力进行分析,结论偏于破坏;用结构有效应力进行分析,结论正确而适中.

关键词: 岩石(多孔介质), 有效应力, 莫尔强度理论

Abstract: Effective stresses should be used instead of normal-stresses in the analysis of rock strength. Terzaghi effective stress is the approximation of structural effective stress. Terzaghi equation is only applicable to porous media like soil. Tight media like rock must adopt the structural effective stress,otherwise error will inevitably occur. Normal-stress analysis overestimates the strength of rock, and Terzaghi effective stress underestimates the strength of rock. Only the structural effective stress can provide the correct answer.

Key words: Mohr strength theory, rock (porous media), effective stress

中图分类号:

TU452

李传亮, 孔祥言. 岩石强度条件分析的理论研究[J]. 应用科学学报, 2001, 19(2): 103-106.

LI Chuan-liang, KONG Xiang-yan. A Theoretical Study of Rock Strength Conditions[J]. Journal of Applied Sciences, 2001, 19(2): 103-106.