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An arch useful for withstanding effect of rockburst occuring in underground mines/tunnels
An arch useful for withstanding effect of rockburst occuring in underground mines/tunnels
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机译:拱门,用于抵抗地下矿山/隧道中发生的岩爆效应
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摘要
An arch useful for withstanding effects of rock burst occuring in underground mines/tunnels. The arch comprises a curved U-section arch provided on both ends with slidingly coupled U-section arch pieces, the coupled top and bottom pieces being provided with at least two guides on both sides. The guides are slidingly coupled with the bottom section aches, the ends of the top section arch being placed on upper holder plates, the upper holder plates being fixed with the bottom sections on both sides. The bottom portion arches also having at least one lower pair of holder plates fixed on both sides below the upper holder plates.
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