南宁地铁三号线下穿既有一号线盾构隧道施工措施探讨  

Discussion on Nanning Metro Line 3 Shield Construction Measures Underpassexisting Line 1 Tunnel

作　　者：张鹏翔 Zhang Peng-xiang

机构地区：[1]中国中铁一局城轨公司

出　　处：《建筑技术开发》2019年第14期61-62,共2页Building Technology Development

摘　　要：在盾构法隧道施工中,经常遇到正穿或侧穿既有运营线路的问题,保护临近既有地铁成型隧道安全和控制隧道收敛变形或沉降成为盾构施工必须解决的技术问题。以南宁轨道交通三号线金湖广场站~埌西站区间段为工程依托,对盾构法隧道施工中所采取的既有运营线路的防护措施、盾构施工参数和壁后注浆等关键技术措施进行了探讨,对以后类似工程有借鉴意义。It is very common for tunnels to pass under existing metros during their construction. And how to protect existing subway tunnels and control deformations become technical problems that must be solved in shield construction. Based on the construction of Nanning Metro Line 3 under crossing the existing tunneling of Metro Line 1,the paper discusses the protection measures of the existing line,the shield construction parameters and the grouting behind the wall used in the construction of shield tunnels. Technical measures have been explored and have implications for similar projects in the future.

关 键 词：南宁地铁3号线 盾构机 二次注浆 

分 类 号：TU94[建筑科学—建筑技术科学] U455.43[建筑科学—桥梁与隧道工程]