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Browsing by Subject "roof bolting"

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  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Projekt zabezpieczenia komory »Ważyn«
    (Wydawnictwa AGH, 2005) Chmura, Janusz; Lasoń, Andrzej
    Several hundred years long mining perforated considerably the underground rock mass of Bochnia. Damaging influence of time has resulted in advancing destruction of a unique, historic salt mine, shaped by many generation of Bochnia miners. The advancing alterations of the »Ważyn« underground chamber are a spectacular example of destructive changes within the rock mass. Convergence of excavations is much more pronounced in the Bochnia salt mine in comparison with the salt mine in Wieliczka: the underground deformations result from different geological structures of both mines. Protecting old excavations is a must if the historic substance of this unique mine is to be preserved. This assumption was a basis of investigations on how to protect the »Ważyn« chamber.