盾构近距离下穿运营地铁隧道同时接收施工技术  

Construction technology of shield passing through operating subway tunnel and simultaneously receiving

作　　者：耿传政 GENG Chuanzheng(Tunnel Engineering Co. , Ltd. , China Railway 14th Bureau Group Co. , Ltd. , Jinan 250022, China)

机构地区：[1]中铁十四局集团隧道工程有限公司,山东济南250022

出　　处：《山东交通学院学报》2021年第1期41-53,78,共14页Journal of Shandong Jiaotong University

摘　　要：以成都轨道交通6号线玉双路站—牛王庙站区间双线隧道近距离下穿运营2号线,同时进行盾构接收施工工程为背景,阐述盾构下穿前、中、后以及接收施工阶段的大管棚支护、多重注浆、刀具调整、掘进参数设定、自动化监测以及快速接收、洞门封闭处理等关键施工技术。在成都卵石和泥岩复合地层中盾构施工时,通过采取大管棚预加固、自动化监测等技术措施,有效提升盾构在接收段下穿运营地铁线的施工安全系数,避免监测盲区。Taking the double track tunnel between Yushuang Road station and Niuwangmiao station of Chengdu rail transit line 6 passing through the tunnel of line 2 at close distance,the shield receiving construction project is taken as the background.The key construction technologies,such as the large pipe shed support,multiple grouting,cutter adjustment,tunneling parameter setting,automatic monitoring,rapid receiving and portal closure treatment,are described before,during,after and in the process of the receiving construction stage of shield tunneling.It is verified that during the shield construction of the composite stratum of pebble and mudstone in Chengdu,the construction safety factor of shield passing through the operating subway line in the receiving section can be effectively improved by adopting technical measures such as the pre-reinforcement of the large pipe shed and automatic monitoring so that the monitoring blind area is avoided.

关 键 词：盾构 地铁隧道 大管棚 自动化监测 接收 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]