摘要
针对徐州某隧道建设项目毗邻地铁1号线,为降低施工风险与确保地铁隧道安全运营,选取典型工程断面,通过ABAQUS软件建立了隧道与下方地铁管线的二维数值模型,模拟计算了开挖、支护、回填全过程中边坡稳定性及既有地铁隧道管片应力状态,结果表明:合理支护可以有效将边坡最大位移由10.1 cm降低至6.9 cm,新建隧道项目对埋深16 m的既有地铁影响较小.研究成果在边坡开挖稳定性分析及评估新建工程施工对既有地铁隧道的影响方面具有一定参考价值.
In order to reduce the construction risk and ensure the safe operation of the subway tunnel,a typical project section is selected to establish a two-dimensional numerical model of the tunnel and the underground subway pipeline through ABAQUS software.The slope stability and the stress state of the existing subway tunnel segments during the whole process of excavation,support and backfill are simulated and calculated.The results show that the reasonable support is feasible The protection can effectively reduce the maximum displacement of the slope from 10.1cm to 6.9cm.The new tunnel project has little impact on the existing metro with a buried depth of 16m.The research results have certain reference value in slope excavation stability analysis and evaluation of the impact of new construction on the existing metro tunnel.
作者
侍丽华
徐程
陶祥令
马田飞
SHI Lihua;XU Cheng;TAO Xiangling;MA Tianfei(Municipal Administration Division,Xuzhou City Administration Bureau,Xuzhou,Jiangsu 221116,China;School of Transportation Engineering,Jiangsu Vocational Institute of Architectural Technology,Xuzhou,Jiangsu 221116,China;State Key Laboratory forGeomachanics&Deep Underground Engineering,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China)
出处
《江苏建筑职业技术学院学报》
2020年第1期22-27,共6页
Journal Of Jiangsu Vocational Institute of Architectural Technology
基金
江苏省住建厅项目:基于临空面的超强度岩石破岩机理与成套设备研究(2019ZD079)
江苏建筑职业技术学院院级课题:多年冻土区浅埋隧道围岩变形演化机理研究(JYJBZX16-3)
关键词
明挖法
边坡稳定
交叉工程
上穿隧道
数值模拟
open cut method
slope stability
crossing engineering
upper highway tunnel
numerical simulation
