黄土隧道锁脚锚管精准安装工艺探析  

Exploration of precise installation techniques for foot-locking anchor pipes in loess tunnels

作　　者：张惠翔 张朝峰 狄恩州 ZHANG Chaofeng;ZHANG Huixiang;DI Enzhou(Shandong Hi-speed Rail Transportation Co.,Ltd,Shandong Jinan 250357 China;Shandong Trafic Engineering Supervision and Consulting Co.,Ltd,Shandong Jinan 250000 China;Shandong Transportation Institute,Shandong Jinan 250031 China)

机构地区：[1]山东高速轨道交通集团有限公司,山东济南250000 [2]山东省交通工程监理咨询有限公司,山东济南250000 [3]山东省交通科学研究院,山东济南250031

出　　处：《山东交通科技》2024年第4期127-129,134,共4页

摘　　要：采用锁脚锚管角度控制器装置,实现黄土隧道锁脚锚管的精准打设,结合工程实例探讨锁脚锚管设计安装的工艺实施要点,有效提升了风洞凿岩机钻孔角度控制精度,断面监测点周最大沉降量由24.3 mm/d减小为-0.9 mm/d。精准的施工角度有益于将拱脚位置的土压力传递到拱脚所在的围岩上,增强拱脚位置的承载力,且在黄土隧道中能够有效地控制围岩变形,提升隧道围岩的稳定性。By introducing the concept of a foot-locking anchor pipe angle controller,we achieved precise installation of foot-locking anchor pipes in loess tunnels.This paper discusses the key implementation points of the design and installation processes of foot-locking anchor pipes through engineering examples.The precision in controlling the drilling angle of the wind tunnel rock drill has significantly improved,reducing the maximum settlement at section monitoring points from 24.3 mm/d to-0.9 mm/d.Precise construction angles facilitate the transfer of earth pressure at the arch foot position to the surrounding rock,enhancing the bearing capacity at the arch foot position.Additionally,in loess tunnels,this precision effectively controls the deformation of the surrounding rock,improving the stability of the tunnel's surrounding rock.

关 键 词：锁脚锚管 定向控制 U形筋 监控量测 

分 类 号：U416[交通运输工程—道路与铁道工程]