公开(公告)号：US06102628A

公开(公告)日：2000-08-15

申请号：US52367

申请日：1998-03-31

申请人： Sibnath Maity ,  Bharat Bhushan Dhar ,  Pinaki Ranjan Ghosh

发明人： Sibnath Maity ,  Bharat Bhushan Dhar ,  Pinaki Ranjan Ghosh

IPC分类号： E21D11/22 ,  E21D15/22 ,  E21D15/502 ,  E21D15/56

CPC分类号： E21D11/22

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.

摘要翻译： 一个拱有助于承受地下矿井/隧道岩爆的影响。 拱形件包括一个弯曲的U形弓形拱，其两端具有滑动联接的U形拱形件，所述联接的顶部和底部件在两侧设置有至少两个导轨。 引导件与底部部分凹陷滑动联接，顶部拱形件的端部被放置在上部保持板上，上部保持板在两侧固定有底部部分。 底部拱部还具有固定在上支架板下方两侧的至少一对下保持板。