公开(公告)号：US4498816A

公开(公告)日：1985-02-12

申请号：US526259

申请日：1983-08-25

申请人： Thomas Korpela ,  Joseph Subrick

发明人： Thomas Korpela ,  Joseph Subrick

IPC分类号： E21D11/00 ,  E21D21/00 ,  E21D20/00

CPC分类号： E21D21/0086 ,  E21D11/006

摘要： A mine roof-truss-bolt system and a novel clip for use in such systems are provided. The system includes opposed anchor members installed in the roof, a reinforcing member located in a passage below the roof and extending longitudinally to locations past the lower ends of the anchor members, and clips abutting the roof for connection with the anchor and reinforcing members. The system also includes apparatus for placing the anchor and reinforcing members in tension for additional support of the roof. The members are connected to the clips at locations of substantially the same elevation on the clip below the mine roof.

摘要翻译： 提供了一种用于这种系统的矿井屋顶桁架螺栓系统和新颖的夹子。 该系统包括安装在屋顶中的相对的锚固构件，位于屋顶下方的通道中的加强构件，并且纵向延伸延伸穿过锚定构件的下端的位置，以及与顶部邻接的夹具以与锚固件和加强构件连接。 该系统还包括用于将锚固件和加强构件放置在张紧位置以用于屋顶的附加支撑的装置。 这些构件在矿顶上的夹子上的大致相同的高度的位置处连接到夹子。