Breaking mechanism of shoulder bolt of deep coal roadway in tectonic stress area and its control

XIAO Tong-qiang; LI Huai-zhen; XU Ying; ZHANG Zhi-gao

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Breaking mechanism of shoulder bolt of deep coal roadway in tectonic stress area and its control

更新时间：2026-06-25

- Breaking mechanism of shoulder bolt of deep coal roadway in tectonic stress area and its control
- Vol. 34, Issue 8, (2013)
- 作者机构：
  
  1. 河南理工大学能源科学与工程学院,河南,焦作,454000
  2. 中国矿业大学煤炭资源与安全开采国家重点实验室,江苏,徐州,221008
  3. 中国矿业大学矿业工程学院,江苏,徐州,221008
  4. 山东新巨龙能源有限责任公司,山东,菏泽,274918
- 作者简介：
- 基金信息：
- DOI：
  CLC： TD353
- Online First：13 August 2013，
  
  Published：2013
- 稿件说明：
移动端阅览
XIAO Tong-qiang, LI Huai-zhen, XU Ying, et al. Breaking mechanism of shoulder bolt of deep coal roadway in tectonic stress area and its control[J]. 2013, 34(8).
DOI：

XIAO Tong-qiang, LI Huai-zhen, XU Ying, et al. Breaking mechanism of shoulder bolt of deep coal roadway in tectonic stress area and its control[J]. 2013, 34(8). DOI：

摘要

针对深部构造应力作用下煤巷“肩角锚杆破断”问题，建立肩角锚杆力学分析模型，分析煤帮沿顶板滑移对锚杆的作用，得到肩角锚杆的受力、变形特征，揭示深部构造应力区煤巷肩角锚杆破断机制，即在煤帮沿顶板的滑移剪切力作用下，杆体发生弯曲变形，且构造应力越大，弯曲变形越严重；肩角锚杆在煤岩层交界面处受到的剪力最大，而使得锚杆在交界面处易被剪断。针对深部构造应力区煤巷肩角锚杆破断问题，提出“控让耦合支护”围岩控制技术，并成功应用于工程实践。

Abstract

In deep tectonic stress area

shoulder bolt broken and failure phenomenon is prominent in coal roadway; and it’s easy to induce roof collapse accident. It is an immediate requirement to solve support failure problem. In view of “shoulder bolt breakage” in deep coal roadway under the action of tectonic stress

a mechanical analysis model of shoulder bolt is established to analyze the action of slippage of coal ribs along roof on bolts; and stress and deformation characteristics of shoulder bolt are gotten. Shoulder bolt breaking mechanism is discovered. Under slippage shear force produced by tectonic stress

bending deformation of bolt body happens; and the shear force of shoulder bolt is biggest in interface between coal seam and roof

where the bolt body is cut off easily. Focused on the problem of shoulder bolt breakage

“controlling and yielding coupling support” control technology is put forward. The research results have been successfully applied to engineering practice.

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