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    Item type:Article, Access status: Open Access ,
    Wzmacnianie obudowy wyrobisk korytarzowych w złożonych warunkach górniczo-geologicznych
    (Wydawnictwa AGH, 2010) Majcherczyk, Tadeusz; Niedbalski, Zbigniew; Małkowski, Piotr
    Designing optimal support for underground headings in hard coal mines, particularly for the conditions with intensified rock pressure, is a serious challenge for engineers and coal companies. Not only the already-existing technological practices are continually improving but also numerous innovative solutions related to such problems are implemented. The paper presents an analysis of heading support work. The applied support scheme consisted of steel yielding support reinforced with strand bolts and crown runners. Coal-mine research findings indicated the changes around the analyzed headings, during exploitation. It was carried on at considerable depths and in the areas of hard mining and geological conditions. The results of the field research and achieved experience provided a basis for designing a drift in combined standing-and-roof-bolting support. Such a solution was elaborated with the use of numerical methods. The drift is to became the main opening working at the depth of almost 1300 m.