Device for the compression of infill material in mines

摘要

Hydraulic shield lining frames are provided, particularly in conjunction with blast filling with a stowage screen system taking the form of a sliding roof bar. For the compression of dense stowage extending up to the roof and the avoidance of gaps in the backfilling under the roof the sliding roof bars according to the invention are provided with a compression plate 4 constructed to be retractable and extensible over the width of a lining frame. The compression plate 4 may be hydraulically actuated.