Mined roadway support with spaced support arches - has reinforcement mats, in support stowing space, and underpinning lintel

摘要

The roadway support system for a mined roadway consists of a number of arched frames (13) spaced along the road. On the heading side (11) of the frames (13) is a reinforcing mat (14) of narrow gauge wire mesh, backfilled with concrete (15) reinforced with mat reinforcement (16). At the intersection with the seam (12), the roof (21) of the seam (12) is underpinned by a lintel (17) with an expansion joint (18) underneath it. ADVANTAGE - Reduced convergence in roadway region and reduced cost of extraction.