Work and design of a new tunneling method 'SENS' to unconsolidated ground

Hiroomi Iida, Atsumi Isogai, Keizo Chishiro, Takatoshi Ono, Yukinori Koyama, Atsushi Koizumi

    研究成果: Conference contribution

    抄録

    The Sambongihara Tunnel is on the Tohoku Shinkansen Line. The geology of this tunneling site mainly consists of alternating layers of unconsolidated sandy soil under high hydraulic pressures and cohesive soil. This tunnel was excavated using the NATM, 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. This paper outlines the construction and design of the linings selected for this tunneling practice.

    本文言語English
    ホスト出版物のタイトルGeotechnical Aspects of Underground Construction in Soft Ground - Proceedings of the 5th International Conference of TC28 of the ISSMGE
    ページ231-237
    ページ数7
    出版ステータスPublished - 2006
    イベント5th International Conference of TC28 of the International Society for Soil Mechanics and Geotechnical Engineering, ISSMGE - Amsterdam
    継続期間: 2005 6 152005 6 17

    Other

    Other5th International Conference of TC28 of the International Society for Soil Mechanics and Geotechnical Engineering, ISSMGE
    CityAmsterdam
    Period05/6/1505/6/17

    ASJC Scopus subject areas

    • Geochemistry and Petrology
    • Geotechnical Engineering and Engineering Geology

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