Advancement of analysis method for electromagnetic screening effect of mountain tunnel

Tamio Okutani, Nobuyuki Nakamura, Natsuki Terada, Mitsuyoshi Fukuda, Yutaka Tate, Satoshi Inada, Hidenori Itoh, Shinji Wakao

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    In this paper we report advancement of an analysis method for electromagnetic screening effect of mountain tunnel I with a multiple conductor circuit model. On A.C. electrified railways it is a great issue to manage the influence of electromagnetic induction caused by feeding circuits. Tunnels are said to have a screening effect to reduce the electromagnetic induction because a large amount of steel is used in the tunnels. But recently the screening effect is less expected because New Austrian Tunneling Method (NATM), in which the amount of steel used is less than in conventional methods, is adopted as the standard tunneling method for constructing mountain tunnels. So we measured and analyzed the actual screening effect of mountain tunnels constructed with NATM. In the process of the analysis we have advanced a method to analyze the screening effect more precisely. In this method we can adequately model tunnel structure as a part of multiple conductor circuit.

    Original languageEnglish
    JournalIEEJ Transactions on Industry Applications
    Volume127
    Issue number4
    Publication statusPublished - 2007

    Fingerprint

    Tunnels
    Screening
    Electromagnetic induction
    Networks (circuits)
    Steel

    Keywords

    • A.C. Electrification
    • Earth return circuit
    • Electromagnetic induction
    • Electromagnetic screening
    • Multiple conductor circuit
    • NATM

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Industrial and Manufacturing Engineering

    Cite this

    Advancement of analysis method for electromagnetic screening effect of mountain tunnel. / Okutani, Tamio; Nakamura, Nobuyuki; Terada, Natsuki; Fukuda, Mitsuyoshi; Tate, Yutaka; Inada, Satoshi; Itoh, Hidenori; Wakao, Shinji.

    In: IEEJ Transactions on Industry Applications, Vol. 127, No. 4, 2007.

    Research output: Contribution to journalArticle

    Okutani, T, Nakamura, N, Terada, N, Fukuda, M, Tate, Y, Inada, S, Itoh, H & Wakao, S 2007, 'Advancement of analysis method for electromagnetic screening effect of mountain tunnel', IEEJ Transactions on Industry Applications, vol. 127, no. 4.
    Okutani, Tamio ; Nakamura, Nobuyuki ; Terada, Natsuki ; Fukuda, Mitsuyoshi ; Tate, Yutaka ; Inada, Satoshi ; Itoh, Hidenori ; Wakao, Shinji. / Advancement of analysis method for electromagnetic screening effect of mountain tunnel. In: IEEJ Transactions on Industry Applications. 2007 ; Vol. 127, No. 4.
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