Analysis of fault rockburst based on shear beam model for interface failure

ZHAO Yang-feng; PAN Yi-shan; YU Hai-jun

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Analysis of fault rockburst based on shear beam model for interface failure

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- Analysis of fault rockburst based on shear beam model for interface failure
- Vol. 28, Issue 8, (2007)
- 作者机构：
  
  辽宁工程技术大学力学与工程科学系,辽宁,阜新,123000
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU456
- Online First：15 October 2013，
  
  Published：2007
- 稿件说明：
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ZHAO Yang-feng, PAN Yi-shan, YU Hai-jun. Analysis of fault rockburst based on shear beam model for interface failure[J]. 2007, 28(8).
DOI：

ZHAO Yang-feng, PAN Yi-shan, YU Hai-jun. Analysis of fault rockburst based on shear beam model for interface failure[J]. 2007, 28(8). DOI：

摘要

将剪切梁层间失效模型用于分析断层冲击地压的发生，在不考虑断层的弹性时对断层冲击地压进行了解析分析，得到了剪切梁的位移和应力分布规律和断层冲击地压发生时撕开裂纹长度和临界载荷。分析了撕开裂纹长度和临界载荷与各种力学参数之间的关系。研究结果表明：当采深越大，剪切梁的剪切弹性模量越小，剪切梁厚度越厚，断层带剪切软化模量越大；断层带厚度、滑动摩擦系数、剪应力峰值强度越小时，断层冲击地压容易发生。采深、剪切梁的剪切弹性模量、断层带剪切软化模量、剪应力峰值强度、断层带厚度这些参数对断层冲击地压的发生影响较大。其结果为预测、防治断层冲击地压提供了理论依据。

Abstract

Shear beam model for interface failure was used for analyzing the fault rockburst occurrence. To analyze fault rockburst without considering the elasticity of the fault

the law of shear beam displacement and stress distributions

tearing crack length and critical load when fault rockburst occurred were obtained. The relation among tearing crack length

critical load and various kinds of mechanical parameters was analyzed. The results obtained show that if mining depth is large

and if the shear elastic modulus of the shear beam is low and thickness of the shear beam is large

and if shear softening ratio of faulted zone is large and thickness

coefficient of sliding friction

shear stress peak strength of faulted zone is low

then fault rockburst is easy to occur. These parameters of mining depth and the shear elastic modulus of the shear beam and shear softening ratio

shear stress peak strength

thickness of faulted zone have a more large influence on the fault rockburst occurrence. The theoretical foundation for fault rockburst prediction and prevention was proposed.

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Related Institution

School of Mechanics and Engineering, Liaoning Technical University

Institute of Disaster Rock Mechanics, Liaoning University

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State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology

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