刘保民, 韩龙飞, 姚伟, 等.对穿锚固支护体的强化机理研究[J].河南理工大学学报（自然科学版）,2021,40(5):38-44.

LIU B M, HAN L F , YAO W , et al.Study on strengthening mechanism of penetrating anchorage body[J].Journal of Henan Polytechnic University(Natural Science) ,2021,40(5):38-44.

对穿锚固支护体的强化机理研究

刘保民, 韩龙飞, 姚伟, 孙海军

河南理工大学 资源环境学院，河南 焦作454000

摘要:为完善对穿锚固支护方式的理论体系，通过相似试验和数值模拟试验，探讨对穿锚固支护体承载峰后力学性能的变化趋势以及锚杆布设方式对锚固支护体的强化机理，并对锚杆破断失效的原因进行例证分析。结果表明：对穿锚固支护体的强化因素主要是锚固支护体峰后锚杆的布设方式，布设方式不同导致对穿锚杆破断失效的时机也不同，进而影响锚固支护体峰后稳定承载阶段以及峰后承载能力下降阶段的稳定性。

关键词:对穿锚固支护体;峰后承载能力;锚杆布设方式;强化机理

doi:10.16186/j.cnki.1673-9787.2019120044

基金项目:国家自然科学基金资助项目（41872174）

收稿日期:2019-12-16 00:00:00

修回日期:2020/03/20

出版日期:2021/09/15

Study on strengthening mechanism of penetrating anchorage body

LIU Baomin, HANLongfei , YAOWei , SUN Haijun

Institute of Resources & Environment， Henan Polytechnic University， Jiaozuo 454000 ， Henan， China

Abstract:Abstract： In order to improve the theoretical system of penetrating the anchorage body ， based on similar test sand numerical simulation experiments ， the changing trend of mechanical properties of the penetrating anchorage body in the post-peak loading stage ， and the strengthening mechanism of the anchorage body on the bolt arrangement method were discussed ， and the reasons of the failure of the anchored bolts were exemplified and analyzed. The results showed that the strengthening factor of the penetrating anchorage body was mainly the arrangement method of the bolts after the peak load. Different arrangement methods led to different timing of failure of the penetration bolts ， which had an impact on the stability of the anchorage body in the post-peak stable bearing stage and the bearing reduction stage.

Key words:penetrating anchorage body;post-peak bearing capacity;bolt arrangement method;strengthening mechanism

 对穿锚固支护体的强化机理研究_刘保民.pdf