Welded grid, primarily for securing underground cavities, cavity
systems, as well as process for making the grid
    2.
    发明授权
    Welded grid, primarily for securing underground cavities, cavity systems, as well as process for making the grid 失效
    焊接网格,主要用于固定地下腔,腔体系统以及制造电网的过程

    公开(公告)号:US4245926A

    公开(公告)日:1981-01-20

    申请号:US906779

    申请日:1978-05-17

    摘要: Welded grid structure for securing underground cavities such as mine roads, consisting of two sets or grid systems of parallel straight bars disposed in parallel planes and connected by welding to a third set of bars that extend perpendicular to the first two sets of bars. The bars of the third set are bent to enable them to intersect the planes of the first and second sets but not all intersection points are welded. The non-welded points are in accordance with a predetermined scheme as a result of which the grid system is rigid in the principal direction along the straight bars of the first two sets but is flexible along a direction perpendicular thereto. A process for making the grid structure is also disclosed.

    摘要翻译: 焊接网格结构,用于固定地下空腔,例如矿井道路,由平行的平行平面布置的两组或并排直杆网格系统组成,并通过焊接连接到垂直于前两组杆延伸的第三组杆。 第三组的杆被弯曲以使它们能够与第一组和第二组的平面相交,但是并非所有交点都被焊接。 非焊接点是根据预定方案,其结果是,栅格系统沿着前两组的直条在主要方向上是刚性的,但是沿着与其垂直的方向是柔性的。 还公开了制造网格结构的过程。