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    • 2. 发明授权
    • Peripherally flexible prop arch for mining tracks, tunnels or the like
    • 用于采矿轨道,隧道等的外围柔性支撑拱
    • US4630973A
    • 1986-12-23
    • US617522
    • 1984-06-04
    • Peter HeintzmannManfred KoppersKarlheinz BohnesLothar Domanski
    • Peter HeintzmannManfred KoppersKarlheinz BohnesLothar Domanski
    • E21D11/20E21D11/22E21D11/18
    • E21D11/22E21D11/20
    • A peripherally flexible arch for propping rock structure for mining tracks, tunnels or the like is comprised of a plurality of partially overlapped elongated segments, each of which has an end portion extended toward the rock structure, a bottom portion opposite to the end portion, and a lateral flange offset from the end portion laterally and in the direction toward the bottom portion. Clamping devices are arranged at the ends of the overlapping regions of the segments to clamp the segments to each other. The end portion of each lower segment is inserted into a groove formed between the end portion and the flange portion of each upper segment at the side of this segment facing away from the rock structure. Each clamping device has a hook engaged in a groove formed between the end portion and the flange of the upper segment at the side of this segment facing toward the rock structure.
    • 用于支撑用于采矿轨道,隧道等的岩石结构的外围柔性拱形物包括多个部分重叠的细长段,每个细长段具有朝向岩石结构延伸的端部,与端部相对的底部,以及 横向凸缘从端部侧向偏向底部的方向偏移。 夹紧装置布置在段的重叠区域的端部,以将段彼此夹紧。 每个下段的端部插入形成在每个上段的端部和凸缘部分之间的槽中,该槽在该段的背离岩石结构的一侧。 每个夹紧装置具有接合在形成在该段的端部和上段的凸缘之间的凹槽中的钩,其面向岩石结构。