江西建材Issue(1)：261-264,4.
地铁盾构区间下穿既有地铁线路施工技术研究
Research on Construction Technology ofMetro Shield Tunneling under Passing Existing Subway Lines
摘要
Abstract
Taking the construction of the shield tunneling section from Muxidi Station to Daguanying Station on the newly built Beijing Metro Line 16 as an example,a risk analysis was conducted on the shield tunneling section under Metro Line 1.Based on the characteristics of the upper soft and lower hard strata,matching shield tunneling equipment was selected.Through the experimental section,excavation parameters such as soil chamber pressure,excavation speed,and cutter head speed were determined for the lower crossing section.At the same time,guarantee measures such as secondary grouting,radial grouting,and automatic monitoring were added,Ensure that the shield tunnel section smoothly passes through Metro Line 1.The maximum settlement of the track structure within the existing subway section is only 0.32mm.The smooth implementation of the crossing project effectively ensures the safety of the existing line operation,and can also provide reference for the construction of similar projects.关键词
盾构区间/穿越施工/盾构参数/沉降控制Key words
Shield tunneling/Under passing construction/Shield parameters/Settlement control分类
建筑与水利引用本文复制引用
孙巍..地铁盾构区间下穿既有地铁线路施工技术研究[J].江西建材,2024,(1):261-264,4.基金项目
中铁十五局集团2017 年度科技研发计划项目《暗挖车站多空间交叉施工及纵横向叠加扣拱施工技术研究》(项目编号:2017B4). （项目编号:2017B4）
