Experimental study of relation between in-situ crustal stress and rock elastic modulus

QIN Xiang-hui; TAN Cheng-xuan; SUN Jin-zhong; CHEN Qun-ce; AN Mei-jian

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Experimental study of relation between in-situ crustal stress and rock elastic modulus

更新时间：2026-06-25

- Experimental study of relation between in-situ crustal stress and rock elastic modulus
- Vol. 33, Issue 6, (2012)
- 作者机构：
  
  1. 国土资源部新构造运动与地质灾害重点实验室,北京,100081
  2. 中国地质科学院地质力学研究所,北京,100081
  3. 中国地质大学工程技术学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC： P642.3
- Online First：14 June 2012，
  
  Published：2012
- 稿件说明：
移动端阅览
QIN Xiang-hui, TAN Cheng-xuan, SUN Jin-zhong, et al. Experimental study of relation between in-situ crustal stress and rock elastic modulus[J]. 2012, 33(6).
DOI：

QIN Xiang-hui, TAN Cheng-xuan, SUN Jin-zhong, et al. Experimental study of relation between in-situ crustal stress and rock elastic modulus[J]. 2012, 33(6). DOI：

摘要

在北京某深孔原岩应力测量和原岩应力测量段同等深度单轴及不同围压下的三轴岩石力学试验的基础上，结合统计的钻孔岩体结构参数，分析了原岩应力测量段深度处修正前、后的岩石弹性模量，进而探讨了地应力与岩石弹性模量间关系。结果表明，在花岗岩中，主应力大小与修正前、后的岩石弹性模量间均呈正相关关系，而在灰岩中，主应力大小与修正前、后岩石弹性模量间的关系不明确，需要进一步研究；在花岗岩中，主应力大小与修正后的岩石弹性模量间的相关性系数高于主应力大小与修正前的岩石弹性模量间的相关性系数；各向同性高的岩体（如花岗岩），实测地应力大小与岩石力学试验结果相关性好，而各向异性大的岩体（如沉积岩），实测地应力大小与岩石力学试验结果相关性较差

Abstract

An in-situ stress measurement and a rock mechanical test under different confining pressures and statistics of structure properties of rock mass in a deep borehole in Beijing have been carried out to research the relation between in-situ stress and rock elastic modulus thoroughly. The results are as follows: the relation between principal stress magnitude and rock elastic modulus shows a positive correlation in granite

but not clear in limestone. In granite

the relative coefficient between principal stress magnitude and revised rock elastic modulus exceeds the relative coefficient between principal stress magnitude and rock elastic modulus. The correlation between in-situ crustal stress magnitude and results of rock mechanical test in high-isotropic rock (e.g. granite) is high

but the correlation in low-isotropic rock (e.g. sedimentary rock) is low.

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