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    • 4. 发明申请
    • SAFETY DEVICE FOR MINES
    • 矿山安全装置
    • WO2004046508A1
    • 2004-06-03
    • PCT/ZA2003/000173
    • 2003-11-17
    • LEWIS, Brian, Peter
    • LEWIS, Brian, Peter
    • E21D11/00
    • E21D19/00
    • A safety device (10) for catching and/ or breaking the fall of a fragment of rock falling from a region of a hanging wall located between support and/or anchor means in the form of roof supports (16.1 and 16.2), the device including a mesh (18) configured to be anchored by and span between two or more roof supports (16.1 and 16.2) located underneath the hanging wall (14), wherein the apertures (20) of the mesh (18) are selected to be smaller than said fragments of rock. The mesh (18) is manufactured from high density polyethylene in which a flame retardant is included.
    • 一种安全装置(10),其用于捕获和/或破坏岩石碎片的落下,所述塌陷碎片从位于支撑体和/或锚定装置之间的悬挂壁的区域中,所述悬挂壁的形式为屋顶支撑件(16.1和16.2),所述装置包括 一种网格(18),其被构造成由位于所述悬挂壁(14)下方的两个或更多个屋顶支撑件(16.1和16.2)之间锚定并且跨过所述网格(18),其中所述网格(18)的所述孔(20)被选择为小于 说碎片的岩石。 网格(18)由包含阻燃剂的高密度聚乙烯制成。