基于Hoek-Brown强度准则的巷道围岩弹塑性研究

潘阳; 赵光明; 孟祥瑞

基于Hoek-Brown强度准则的巷道围岩弹塑性研究

1.
安徽理工大学能源与安全学院淮南 232001;
2.
煤炭资源与安全开采国家重点实验室徐州 221116

详细信息

作者简介:
潘阳,从事矿山压力与岩层控制研究.Email: panyang1022@163.com

中图分类号: TU457
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出版历程
- 收稿日期: 2010-08-29
- 修回日期: 2011-02-27
- 刊出日期: 2011-10-24

ELASTRO-PLASTRC RESEARCH OF SURROUNDING ROCK BASED ON HOEK-BROWN STRENGTH CRITERION

1.
School of Mining and Safety, Anhui University of Science and Technology, Huainan 232001;
2.
State Key Laboratory of Coal Resources and Safe Mining, Xuzhou 221116

摘要

摘要: 巷道围岩区域划分和分析是确定巷道里锚杆支护、松散地压的主要依据。巷道围岩位移是煤矿巷道断面设计、确定变形地压等的主要根据。本文采用Hoek-Brown强度理论和极限平衡方程通过对侧压力系数为1的圆形理想巷道的巷道围岩进行弹塑性分析。通过上述计算求出围岩巷道的塑性半径、应力及位移,与目前广泛采用的以Mohr-Coulomb为屈服强度准则的修正的芬纳公式作为比较。
- 巷道围岩 /
- 弹塑性分析 /
- Hoek-Brown强度准则
Abstract: The surrounding rock zoning and analysis are the main basis to determine the roadway bolting and loose ground pressure.Displacement of surrounding rock is the main parameter for the design of coal mine tunnel cross section and the determination of distortion geostatic pressure.This paper adopts Hoek-Brown strength theory and limit equilibrium equation and carries out the elasto-plastic analysis of an idealized roadway surrounding rock with a unit lateral pressure coefficient.It derives the plastic zone radius,stress field and displacements of the surrounding rock.The results are further compared with the results determined from the widely used Fennner formula associated with the Mohr-Coulomb yield strength criterion.
- Surrounding rock /
- Elastro-Plastrc analysis /
- Hoek-Brown strength criterion

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参考文献(1)

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