Construction of Walensee railroad tunnel in Switzerland was complicated by simultaneously built parallel vehicular tunnel; close crossing of tunnels necessitated cautious blasting; fractioned and dusty rock formations in railroad tunnel required timbering; successful grouting with thick honeylike solution of bitumen; tunneling was advanced by making first or pioneer tunnel.


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    Title :

    Tunneling for swiss railroad relocation


    Additional title:

    World Construction


    Contributors:

    Published in:

    Publication date :

    1960


    Size :

    3 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


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