Fig. 21
From: Short-wall roadway backfill method for sustainable mining

Real shots of surface and load-bearing structures. (a) Subsidence method. (b) SRBM. (c) Backfill. (d) Solid coal
From: Short-wall roadway backfill method for sustainable mining

Real shots of surface and load-bearing structures. (a) Subsidence method. (b) SRBM. (c) Backfill. (d) Solid coal