排水箱涵施工对邻近既有大断面矿山法区间隧道的安全影响分析  

Analysis on the Safety Influence of Drainage Box Culvert Construction on Adjacent Existing Large-section Interval Tunnel by Mine Tunneling Method

作　　者：马庆杰 MA Qingjie(Xuzhou Design Institute of China Railway Shanghai Design Institute Group Corporation Limited,Xuzhou 221000,Jiangsu,China)

机构地区：[1]中铁上海设计院集团有限公司徐州设计院,江苏徐州221000

出　　处：《工程技术研究》2023年第22期9-11,共3页Engineering and Technological Research

摘　　要：文章以某排水箱涵穿越既有大断面矿山法区间隧道为研究背景,对基坑施工进行安全评估,采用Midas GTS-NX软件建模,分析该箱涵施工对邻近既有大断面矿山法区间隧道的安全影响,包括沉降及变形情况,同时通过三维模型模拟卸载工况,分析结构稳定性,并对监测结果进行对比分析。结果表明,箱涵合理分段开挖,对地质条件较好的大断面区间隧道影响有限,隧道隆起变形值较小。实测数据与计算结果大体一致,研究成果可为同类型工程提供参考。Based on the research background of a drainage box culvert crossing existing large-section interval tunnel by mine tunneling method,this paper evaluates the safety of foundation pit construction.Midas GTS-NX software is used to model and analyze the safety influence of the box culvert construction on the adjacent existing large-section interval tunnel by mine tunneling method,including settlement and deformation.At the same time,the three-dimensional model is used to simulate the unloading condition,analyze the structural stability,and compare and analyze the monitoring results.The results show that the reasonable segmented excavation of box culvert has limited influence on the largesection interval tunnel with good geological conditions,and the uplift deformation value of the tunnel is small.The measured data are generally consistent with the calculation results,and the research results can provide reference for similar engineering.

关 键 词：箱涵工程 大断面区间隧道 数值模拟 沉降变形 

分 类 号：U231.3[交通运输工程—道路与铁道工程]