Application of 'casting support tunneling system using TBM' to unconsolidated soil with high groundwater level

Hiroomi Iida, Takashi Kitagawa, Keizo Chishiro, Takatoshi Ono, Yukinori Koyama, Atsushi Koizumi

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    The Sambongihara Tunnel on the Tohoku Shinkansen Line, located between Hachinohe and Shin-Aomori stations, is a double-track tunnel 4,280 meters long. The geology of this tunneling site mainly consists of alternating layers of unconsolidated sandy soil under high hydraulic pressures and cohesive soil. Excavation of this tunnel began in August 2001 using the NATM from the Shin-Aomori side, but the tunnel face collapsed twice, preventing the tunnel construction from advancing as scheduled. We therefore conducted an in-depth study to develop a new tunneling technique, aimed at improving efficiency and safety of the work. The new tunneling method uses a standard earth and mud pressure shield to maintain face stability and ensure good excavating capability. The technique developed will significantly improve the efficiency and safety of the work. This paper outlines the construction and design of the linings selected for this tunneling practice.

    Original languageEnglish
    Title of host publicationUnderground Space Use: Analysis of the Past and Lessons for the Future - Proceedings of the 31st ITA-AITES World Tunnel Congress
    Pages765-771
    Number of pages7
    Volume2
    Publication statusPublished - 2005
    Event2005 ITA-AITES World Tunnel Congress and 31st General Assembly - Istanbul
    Duration: 2005 May 72005 May 12

    Other

    Other2005 ITA-AITES World Tunnel Congress and 31st General Assembly
    CityIstanbul
    Period05/5/705/5/12

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Geography, Planning and Development

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  • Cite this

    Iida, H., Kitagawa, T., Chishiro, K., Ono, T., Koyama, Y., & Koizumi, A. (2005). Application of 'casting support tunneling system using TBM' to unconsolidated soil with high groundwater level. In Underground Space Use: Analysis of the Past and Lessons for the Future - Proceedings of the 31st ITA-AITES World Tunnel Congress (Vol. 2, pp. 765-771)