紧凑隧道中岩柱稳定性及加固技术研究
Research on the Stability and Reinforcement Technology of Rock Columns in Compact Tunnels
潘洪 1李锐 1刘张飞1
作者信息
- 1. 中国水利水电第七工程局有限公司 成都 610213
- 折叠
摘要
以金山隧道为例,本文对紧凑隧道中岩柱围岩受力机理、注浆小导管与低预应力锚杆联合加固技术、中岩柱支护稳定性分析等进行研究.明确紧凑隧道中岩柱的受力特征,总结出紧凑隧道中围岩压力的影响因素;对紧凑隧道中岩柱采用联合加固方法,加强围岩承载能力,提高围岩稳定性;联合加固技术的工艺原理及施工参数的成功应用,表明该技术具有良好的加固效果.
Abstract
Taking Jinshan Tunnel as an example,this article studies the stress mechanism of rock column surrounding rock in compact tunnels,the combined reinforcement technology of grouting small conduits and low prestressed anchor rods,and the stability analysis of middle rock column support.Clarified the stress characteristics of rock columns in compact tunnels and summarized the influencing factors of surrounding rock pressure in compact tunnels;The joint reinforcement method is adopted for the rock columns in compact tunnels,which enhances the bearing capacity of the surrounding rock and improves its stability;The successful application of the process principle and construction parameters of the joint reinforcement technology demonstrates its excellent reinforcement effect.
关键词
中岩柱/受力/加固/效果Key words
middle rock pillar/stress/reinforcement/effect引用本文复制引用
出版年
2024
NETL
NSTL
万方数据