矿山法隧道近距离下穿地下商城技术研究  

Study on the Technology of Mine Tunnel Crossing the Underground Mall in Close Range

作　　者：白东锋[1] 刘罡[1] BAI Dongfeng;LIU Gang(CCCC First Highway Consultants Co.,Ltd.,Xi’an,Shaanxi 710000,China)

机构地区：[1]中交第一公路勘察设计研究院有限公司,陕西西安710000

出　　处：《施工技术》2020年第S01期591-595,共5页Construction Technology

摘　　要：为了保证浅埋暗挖法隧道顺利近距离下穿通过大型老旧地下商城,确保施工期间地下商城的结构安全和正常营业,提出了相应的风险控制措施,包括:掌子面超前深孔注浆加固、加强隧道初期支护刚度、初衬壁后以及初衬与二衬之间注浆等方法。通过建立三维数值模型对隧道施工进行了全过程模拟,对设计措施的处理效果进行了预测计算,并与现场施工监测数据进行了对比分析。现场实施结果表明该设计措施有效控制了地下商城的变形,现场实测结果与数值模拟结果较为接近,各项控制指标满足设计要求。In order to ensure shallow tunnel can pass through the large underground shopping malls smoothly,and control the settlement of underground shopping malls,the corresponding tunnel construction risk control measures are put forward.Including:the tunnel face advanced deep-hole grouting reinforcement,strengthen the tunnel support stiffness,grouting behind the first lining and grouting between the first lining and second lining.The whole process of tunnel construction is simulated by establishing the three-dimensional numerical model,the processing results of design measures are also predicted,the monitoring data is analyzed and compared with the simulation results.The result shows a good agreement between the simulated and the measured on the site,and meet the design requirements.

关 键 词：隧道工程 变形控制 数值模拟 现场监测 深孔注浆 下穿 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]