公开(公告)号：US3362169A

公开(公告)日：1968-01-09

申请号：US41964764

申请日：1964-12-21

申请人： KARL MARIA GROETSCHEL

发明人： GROETSCHEL KARL MARIA

IPC分类号： E21D23/00 ,  E21D23/04

CPC分类号： E21D23/0069 ,  E21D23/0409

公开(公告)号：US4099785A

公开(公告)日：1978-07-11

申请号：US693114

申请日：1976-06-04

申请人： Karl Maria Groetschel

发明人： Karl Maria Groetschel

IPC分类号： E21C35/00 ,  E21D19/02 ,  E21D23/00 ,  E21D23/06 ,  E21D19/00

CPC分类号： E21D23/06 ,  E21C35/00 ,  E21D19/02 ,  E21D23/0026

摘要： The roof of an underground mine working which is newly exposed by a mining machine passing along a face of the working is supported by applying a flexible mat to the roof and underpinning the mat by self-advancing roof supports. A supply of mat is stored in a region which is already supported by the roof supports, is fed from the store in a first direction, and turned through a right-angle to extend along the newly exposed face. The device which turns the mat and applies it to the roof may have its vertical position controlled in accordance with the vertical position of a cutting cylinder of the mining machine.

摘要翻译： 由穿过工作面的采矿机新露出的地下矿井的屋顶通过将柔性垫施加到屋顶并通过自行推进的屋顶支撑来支撑垫来支撑。 垫子的供给被存储在已经被屋顶支撑件支撑的区域中，从第一方向从商店进给，并且通过直角旋转以沿着新露出的面延伸。 转动垫子并将其施加到屋顶的装置可以根据采矿机的切割圆筒的垂直位置来控制其垂直位置。