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9 条记录 (耗时 0.011 秒)

    Safety prop
    4.
    发明授权
    Safety prop 失效

    公开(公告)号：US3173644A

    公开(公告)日：1965-03-16

    申请号：US3173644D

    CPC分类号： E21D11/02

    Mine support system
    6.
    发明授权
    Mine support system 失效
    矿山支援体系

    公开(公告)号：US5547317A

    公开(公告)日：1996-08-20

    申请号：US172421

    申请日：1993-12-22

    申请人： Mark Howell ,  Graham H. Clarke

    发明人： Mark Howell ,  Graham H. Clarke

    IPC分类号： E21D11/00 ,  E21D11/02 ,  E21D15/48 ,  E21O15/55

    CPC分类号： E21D11/02 ,  E21D11/006 ,  E21D15/483

    摘要： The mine support system (26) is typically used in underground coal mines. Support for the hanging wall (40) of the mine is provided by elongate, transversely extending headboards (10) which are supported by spaced apart supports. The supports may take the form of upright mine supports, typically timber props (28) located on the footwall (34) of the mine working, by roof bolts (30) engaging the hanging wall, or by a combination of props and roof bolts. Prestressing grout bags (32) are located on the headboards and bear against the hanging wall. The combination of headboards and bags forms a continuous bridge between the props.

    摘要翻译： 矿井支护系统（26）通常用于地下煤矿。 通过细长的横向延伸的床头板（10）提供对矿井的悬挂壁（40）的支撑，该床板由间隔开的支撑件支撑。 支撑件可以采用直立的矿井支架，通常位于矿井的下脚板（34）上的木材支柱（28），通过与吊壁接合的顶部螺栓（30），或由道具和屋顶螺栓的组合。 预应力胶浆袋（32）位于床头板上，并靠在悬挂墙上。 床头板和袋子的组合在道具之间形成连续的桥梁。

    Prestressed tunnel lining
    7.
    发明授权
    Prestressed tunnel lining 失效
    预应力隧道衬砌

    公开(公告)号：US4615644A

    公开(公告)日：1986-10-07

    申请号：US821284

    申请日：1986-01-22

    申请人： Renon M. Hoge ,  Albert A. Mathews

    发明人： Renon M. Hoge ,  Albert A. Mathews

    IPC分类号： E21D11/02 ,  E21D19/04

    CPC分类号： E21D11/02 ,  E21D19/04

    摘要： The invention provides a tunnel lining and a method of constructing the tunnel lining by aligning prestressed resilient lining panels of uniform thickness, such as plywood sheets, where longitudinal edges of the panels abut to form a ring. The longitudinal edges of the panel correspond to, and impose thrust against a second longitudinal edge of an adjacent panel. The thrust causes bending of the panels to form an arc about the longitudinal axis of the panels and to cause internal stresses within the ring to counteract loads applied at the exterior of the panels. The ring can consist of multiple layers of panels.

    摘要翻译： 本发明提供了一种隧道衬砌和通过对齐均匀厚度的预应力弹性衬砌板（例如胶合板）来构造隧道衬砌的方法，其中板的纵向边缘邻接形成环。 面板的纵向边缘对应于并相对于相邻面板的第二纵向边缘施加推力。 推力导致板的弯曲以围绕板的纵向轴线形成弧并且在环内引起内部应力以抵消施加在面板外部的负载。 环可以由多层面板组成。