Improvement of true triaxial Hoek-Brown criterion considering the rock critical confining pressure effect

ZHANG Jing; HAN Yan-song; ZHOU Zong-hong; LIU Hai; OUYANG Zhi-hua

doi:10.16285/j.rsm.2025.0765

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Improvement of true triaxial Hoek-Brown criterion considering the rock critical confining pressure effect

更新时间：2026-08-04

- Improvement of true triaxial Hoek-Brown criterion considering the rock critical confining pressure effect
- Vol. 47, Issue 7, (2026)
- 作者机构：
  
  1. ．昆明理工大学国土资源工程学院,云南,昆明,654093
  2. ．云南省中–德蓝色矿山与特殊地下空间利用重点实验室,云南,昆明,654093
  3. ．云南黄金矿业集团股份有限公司博士后科研工作站,云南,昆明,650200
  4. ．武汉科技大学资源与环境工程学院,湖北,武汉,430081
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2025.0765
  CLC：
- Online First：08 July 2026，
  
  Published：2026
- 稿件说明：
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ZHANG Jing, HAN Yan-song, ZHOU Zong-hong, et al. Improvement of true triaxial Hoek-Brown criterion considering the rock critical confining pressure effect[J]. 2026, 47(7).
DOI：

ZHANG Jing, HAN Yan-song, ZHOU Zong-hong, et al. Improvement of true triaxial Hoek-Brown criterion considering the rock critical confining pressure effect[J]. 2026, 47(7). DOI： 10.16285/j.rsm.2025.0765.

摘要

为提高真三轴Hoek-Brown准则对岩石强度的预测精度并拓展其在深部工程中的应用，提出了一种同时考虑常规三轴临界围压效应和真三轴中间主应力效应的改进准则。基于考虑临界围压的Hoek-Brown准则，通过加权平均法引入中间主应力系数，并采用应力替代法构建了组合曲线段和直线段的改进真三轴强度准则。研究结果显示，当中间主应力

超过临界值时，最大主应力

与

的关系由非线性转变为线性，且中间主应力成为控制岩石强度的主导因素。与Priest准则、Zhang-Zhu准则及Li准则相比，改进准则在10类岩石强度预测中平均绝对误差MAE（mean absolute error）的平均值最低（4.946 5%），显著提升了岩石强度的预测精度。该准则在深部岩石工程强度评估与中间主应力临界效应判定方面具有良好的适用性与工程应用价值。

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