公开(公告)号：US20140077580A1

公开(公告)日：2014-03-20

申请号：US14087839

申请日：2013-11-22

申请人： Joy MM Delaware, Inc.

发明人： John Holme

IPC分类号： E21D23/00

CPC分类号： E21D23/0043 ,  E21D23/0017 ,  E21D23/03 ,  E21D23/082

摘要： A longwall mining system includes at least one face end roof support having a longitudinal length, and at least one near end roof support adjacent the face end roof support. The near end roof support has a longitudinal length substantially shorter than the face end roof support longitudinal length. There is also at least one face roof support adjacent the near end roof support, and the face roof support has a longitudinal length substantially shorter than the near end roof support longitudinal length. There is also a forward conveyor extending forward to and attached to the face end roof support, the at least one near end roof support, and the at least one face roof support, and a rearward conveyor extending rearward of and attached to the face end roof support, the at least one near end roof support, and the at least one face roof support. This creates an effective cave line at an angle to the coal face, that helps reduce the goaf pressure on the face end, thereby increasing the stability of the main gate roof support.

摘要翻译： 长壁采矿系统包括具有纵向长度的至少一个面端屋顶支撑件和邻近面端屋顶支撑件的至少一个近端屋顶支撑件。 近端屋顶支撑件的纵向长度基本上比端面顶部支撑件纵向长度短。 还有邻近近端屋顶支撑件的至少一个面屋顶支撑件，并且面屋顶支撑件的纵向长度基本上比近端屋顶支撑件纵向长度短。 还有一个向前传送器，其向前延伸并连接到面端屋顶支撑件，至少一个近端屋顶支撑件和至少一个面屋顶支撑件，以及向后传送器，其向后延伸并附接到面端屋顶 支撑件，至少一个近端屋顶支撑件和至少一个面屋顶支撑件。 这就形成了与煤面成一定角度的有效的洞穴线，这有助于降低面端的压力，从而提高主门屋顶支撑的稳定性。

公开(公告)号：US09670777B2

公开(公告)日：2017-06-06

申请号：US14087839

申请日：2013-11-22

申请人： Joy MM Delaware, Inc.

发明人： John Holme

IPC分类号： E21D23/00

CPC分类号： E21D23/0043 ,  E21D23/0017 ,  E21D23/03 ,  E21D23/082

摘要： A longwall mining system includes at least one face end roof support having a longitudinal length, and at least one near end roof support adjacent the face end roof support. The near end roof support has a longitudinal length substantially shorter than the face end roof support longitudinal length. There is also at least one face roof support adjacent the near end roof support, and the face roof support has a longitudinal length substantially shorter than the near end roof support longitudinal length. There is also a forward conveyor extending forward to and attached to the face end roof support, the at least one near end roof support, and the at least one face roof support, and a rearward conveyor extending rearward of and attached to the face end roof support, the at least one near end roof support, and the at least one face roof support. This creates an effective cave line at an angle to the coal face, that helps reduce the goaf pressure on the face end, thereby increasing the stability of the main gate roof support.