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

作　　者：潘洪[1] 李锐 刘张飞 PAN Hong;LI Rui;LIU Zhangfei(Sinohydro Bureau 7 Co.,Ltd.,Chengdu 610213,China)

机构地区：[1]中国水利水电第七工程局有限公司,成都610213

出　　处：《高科技与产业化》2024年第12期46-48,共3页High-Technology & Commercialization

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。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 

分 类 号：U45[建筑科学—桥梁与隧道工程]