Experimental research on limestone of strength and deformability under different confining pressures

XIONG Zan-min; GAO Quan-chen; WU Ai-qing; HU Jian-min

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Experimental research on limestone of strength and deformability under different confining pressures

更新时间：2026-06-25

- Experimental research on limestone of strength and deformability under different confining pressures
- Vol. 28, Issue S1, (2007)
- 作者机构：
  
  1. 中国矿业大学力学与建筑学院,北京,100083
  2. 长江科学院岩基研究所,武汉,430010
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU452
- Online First：28 March 2014，
  
  Published：2007
- 稿件说明：
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XIONG Zan-min, GAO Quan-chen, WU Ai-qing, et al. Experimental research on limestone of strength and deformability under different confining pressures[J]. 2007, 28(S1).
DOI：

XIONG Zan-min, GAO Quan-chen, WU Ai-qing, et al. Experimental research on limestone of strength and deformability under different confining pressures[J]. 2007, 28(S1). DOI：

摘要

针对灰岩进行了室内常规三轴试验，对试样在不同围压下的强度和变形特性进行了分析。结果表明：灰岩的变形分为4个阶段，在2～10 MPa的围压范围内，岩石为脆性剪切破坏。其峰值强度、残余强度随围压的增加而增加，但峰值时的变形与围压的大小没有相关性；根据试验数据的回归分析，得到灰岩强度准则的表达式。

Abstract

Triaxial compressive tests on limestone are conducted with a variety of confining pressures that range from 2MPa to 10MPa. This observation causes us to conclude that the deformation of limestone can be divided into four stages and the wreck is brittle cutting

The peak and stub intensity value increase with the confining pressure adding up

but the strain of the stress peak has no relativity to the confining pressure. By the redressing analysis

the formula of relation between intensity parameters is produced.

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