双线平行隧道掌子面距离和间距对地表沉降的影响  

Effect of Distance and Spacing on Surface Subsidence in Double Line Parallel Tunnel Construction

作　　者：杨子奇[1] 葛克水[1] 冀少鹏 陈松[1] 

机构地区：[1]中国地质大学<北京>工程技术学院,北京100083

出　　处：《西部探矿工程》2016年第9期187-191,共5页West-China Exploration Engineering

摘　　要：近年来双线平行隧道以其高灵活性和施工的简易性逐渐成为地铁隧道开挖的常见形式,对双线平行隧道开挖所造成的地表沉降也越发引起人们的注意。北京轨道交通7号线九龙山—大郊亭区间采用双线隧道正台阶开挖,穿越北京地区特定的砂性土、粘性土互层的地质条件。运用MIDAS/GTS软件,在简化地质模型的基础上,利用软件模拟反演得到地层参数。选取典型的隧道区间,利用数值模拟软件对相同隧道间距情况下不同掌子面距离对地表沉降造成的影响进行分析,得出相应的规律,可为日后北京地区地铁施工提供依据和指导。The parallel tunnels with their high flexibility gradually have become the common forms of the subway construction. Beijing Metro Line 7 Jiulongshan-Dajiaoting interval with double line tunnel positive step excavation, through Beijing area specific sand soil, cohesive soil inter-bedded geologic conditions. Using MIDAS/GTS software, based on the simplified geological model, to simulate the inversion parameters and to analysis the surface subsidence on the different tunnel spacing and the different distance of the tunnel, obtained the corresponding rules, provide the guidance for the construction of the project.

关 键 词：平行隧道 数值模拟 左右线掌子面距离 隧道间距 地表沉降 

分 类 号：U25[交通运输工程—道路与铁道工程]