不同围压作用下锚杆力学响应特征及破坏机理研究

金属矿山 ›› 2025, Vol. 54 ›› Issue (10): 41-48.

不同围压作用下锚杆力学响应特征及破坏机理研究

王　毅¹　袁　强²　张孟军³　肖　海³　范劲松²　潘星雨³

1. 重庆工程职业技术学院资源与安全学院,重庆 402260;2. 煤矿灾害动力学与控制全国重点实验室,重庆 400044;
3. 四川省华蓥山煤业股份有限公司龙门峡南煤矿,四川广安 638020

出版日期:2025-10-15 发布日期:2025-11-04
通讯作者: 袁　强(1988—),男,博士,副研究员。
作者简介:王　毅(1983—),男,副教授,高级工程师。
基金资助:
重庆市教委科研基金项目(编号:KJZD-K202303406);重庆市科技局面上基金项目(编号:CSTB2024NSCQ-MSX0173);国家矿山安全监
察局矿山安全生产科研攻关项目(编号:2023ZX005);国家自然科学基金项目(编号:51804052)。

Study on Mechanical Response Characteristics and Failure Mechanisms of Rock Bolts under Different Confining Pressures#br#

WANG Yi¹　YUAN Qiang²　ZHANG Mengjun³　XIAO Hai³　FAN Jinsong²　PAN Xingyu³

1. School of Resouces and Safty,Chongqing Vocational Institute of Engineering,Chongqing 402260,China;
2. State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing 400044,China;
3. Longmenxia South Coal Mine,Sichuan Huayingshan Coal Industry Co. ,Ltd. ,Guang′an 638020,China

Online:2025-10-15 Published:2025-11-04

摘要/Abstract

摘要： 在巷道掘进过程中,围岩受到外界扰动,不同位置的围岩表现出不同的强度特性。通过构建锚杆锚固
界面的受力模型,采用Mindlin 解计算方法,得出了适用于锚杆拉拔体系的锚杆应力应变表达式,可分析锚杆在不同
拉拔力下的应力应变分布规律。同时,利用有限元模拟软件建立了锚杆锚固系统的数值模型,分析了不同围压对锚
杆受力特性的影响。研究结果表明,围压是影响锚杆—锚固剂界面力学行为的关键因素,其可导致应力、位移集中区
向锚杆端头方向移动。围压增大能显著降低锚杆—锚固剂界面(尤其是横肋处)的剪应力峰值水平,从而降低锚固剂
与锚杆之间发生较大滑移破坏的风险,提高锚固系统的整体性和稳定性,对优化锚杆支护设计和提升锚固可靠性意
义重大。

关键词: 锚杆支护　围压条件　受力特征　应力分布　位移特性

Abstract: In the process of roadway excavation, the surrounding rock is disturbed by the outside world,and the surrounding
rock at different positions shows different strength characteristics. By constructing the stress model of the bolt anchorage
interface and using the Mindlin solution calculation method,the stress-strain expression of the bolt suitable for the bolt pullout
system is obtained,which can analyze the stress-strain distribution law of the bolt under different pull-out forces. At the
same time,the numerical model of the bolt anchorage system is established by using the finite element simulation software,and
the influence of different confining pressures on the stress characteristics of the bolt is analyzed. The results show that the confining
pressure is the key factor affecting the mechanical behavior of the bolt-anchoring agent interface,which can cause the
stress and displacement concentration zone to move towards the end of the bolt. The increase of confining pressure can significantly
reduce the peak level of shear stress at the bolt-anchoring agent interface (especially at the transverse rib),thereby reducing
the risk of large slip failure between the anchoring agent and the bolt,and improving the integrity and stability of the anchoring
system. It is of great significance to optimize the design of bolt support and improve the reliability of anchoring.

Key words: rock bolt support,confining pressure conditions,mechanical behavior,stress distribution,displacement characteristics

中图分类号:

TD350

王　毅　袁　强　张孟军　肖　海　范劲松　潘星雨. 不同围压作用下锚杆力学响应特征及破坏机理研究[J]. 金属矿山, 2025, 54(10): 41-48.

WANG Yi　YUAN Qiang　ZHANG Mengjun　XIAO Hai　FAN Jinsong　PAN Xingyu. Study on Mechanical Response Characteristics and Failure Mechanisms of Rock Bolts under Different Confining Pressures#br#[J]. Metal Mine, 2025, 54(10): 41-48.

扫码分享