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公开(公告)号:US5143484A
公开(公告)日:1992-09-01
申请号:US661495
申请日:1991-02-26
申请人: Maurice Deul
发明人: Maurice Deul
IPC分类号: E21D15/48
CPC分类号: E21D15/483
摘要: Novel crib members useful in building cribbing to support roofs in underground mines or in tunnel construction and all other underground excavations where roof and ground control is of concern. These crib members are made by filling an envelope of a reinforced elastomeric material with concrete. In a preferred form used motor vehicle tires are filled with concrete.
摘要翻译: 小型婴儿床会员可用于建筑地下矿井或隧道施工中的屋顶,以及屋顶和地面控制受到关注的所有其他地下挖掘。 这些婴儿床构件通过用混凝土填充增强的弹性体材料的包层而制成。 在优选的形式中,使用的机动车辆轮胎充满混凝土。