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    • 8. 发明专利
    • Branch junction part construction method for shield tunnel
    • 分支连接部分施工方法
    • JP2008014125A
    • 2008-01-24
    • JP2006327969
    • 2006-12-05
    • Maeda Corp前田建設工業株式会社
    • MATSUI YOSHIHIKONODA KENJIMIYAZAWA MASAHIROMORI YOSHIKIGOTO SHINGO
    • E21D9/06E21D11/08
    • PROBLEM TO BE SOLVED: To provide a branch junction part construction method for a shield tunnel that can perform construction work safely and efficiently, shorten a construction period and considerably reduce a construction cost while coping with various junction angles.
      SOLUTION: The branch junction part construction method for the shield tunnel comprises a process for constructing a main line tunnel 1 having a machinable segment 6 at a branch junction part; an inside buried material filling process for filling an inside buried material in the branch junction part; a process for cutting the natural ground and the machinable segment 6 to advance for excavation while constructing a ramp tunnel 2 and to penetrate into the main line tunnel 1 obliquely in a proceeding direction; a natural ground improving process for improving the natural ground around the branch junction part from both tunnels 1, 2; a side face communicating process for removing permanent segments on the main line tunnel side and the ramp side to open, eliminating the inside buried material around an opening, and removing the machinable segment 6 left uncut to allow both tunnels to communicate at the side faces; and a building part construction process for constructing the building parts of both tunnels.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 解决的问题:为了提供能够安全有效地进行施工作业的盾构通道的分支接合部施工方法,缩短施工期间,大幅度降低施工成本,同时应对各种接合角度。 解决方案:用于屏蔽隧道的分支连接部分构造方法包括在分支接合部分处构造具有可机加工段6的主线路隧道1的工艺; 用于填充分支接合部分中的内部掩埋材料的内部埋入材料填充过程; 一个切割自然地面的过程和可加工区段6,以在构造斜坡隧道2的同时进行挖掘,并沿着前进方向倾斜地穿入主线隧道1; 一种自然地面改善过程,用于改善隧道1,2的分支接头部分周围的自然地面; 用于去除主线隧道侧和斜坡侧上的永久段的侧面通信处理,以消除开口周围的内部掩埋材料,并且将未切割的可加工区段6移除以允许两个隧道在侧面连通; 以及建设两条隧道建筑物的建筑施工过程。 版权所有(C)2008,JPO&INPIT