长江漫滩地新建隧道上跨运营隧道实测数据分析与前期保护研究  

Analysis and Preliminary Protection of Measured Data of Newly Built Tunnels Crossing Existing Tunnels in the Yangtze River Floodplain

作　　者：王俊杰 蔡乾广 徐东风 WANG Jun-jie;CAI Qian-guang;XU Dong-feng(Nanjing Metro Operation Co.,Ltd.,Nanjing 210019,China)

机构地区：[1]南京地铁运营有限责任公司,南京210019

出　　处：《价值工程》2025年第6期100-103,共4页Value Engineering

摘　　要：新建南京地铁2号线西延线青莲街站-天保街站区间近距离上跨既有运营地铁S3号线高庙路站-天保站区间,该区域处于长江漫滩地且既有线现状结构较差。新建隧道底与既有隧道顶最小竖向净距为5.03m,在不影响既有线日常运营的情况下,施工难度巨大。本文通过对既有线的现状病害调查及长期结构监测数据分析,制定针对性措施。通过现场技术及信息化监控手段,整个监测期间,S3号线道床最大沉降量为-9.8mm,满足沉降10mm限值要求,施工期间未对S3号线正常运营产生影响。The newly-built Nanjing Metro Line 2 West Extension from Qing Lianjie Station to Tian Baojie Station will cross the existing operating Metro Line S3 Gao Miaolu Station to Tianbao Station in a short distance.This area is located in the floodplain of the Yangtze River and the existing structure is poor.The minimum vertical clear distance between the bottom of the new tunnel and the top of the existing tunnel is 5.03m,which is extremely difficult to construct without affecting the daily operation of the existing line.This paper conducts a survey of the current defects and long-term structural monitoring data of existing subway lines to develop targeted measures.Through the use of on-site technical and information monitoring means,the maximum settlement of the tunnel during the entire monitoring period for S3 Line was-9.8mm,which met the settlement limit of 10mm,and the construction period did not have any impact on the normal operation of S3 Line.

关 键 词：长江漫摊 上跨既有运营地铁 数据分析 信息化监控 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]