Fig. 3
From: Appearance mechanism and prevention technology of impact energy of roadway floor on additional load
Stress distribution of working face with soft floor. I (black): abutment pressure distribution curve of normal working face; II (blue): abutment pressure curve of soft floor coal seam; III (red): abutment pressure distribution curve of suspended roof structure in soft floor coal seam. (A) stress influence range of normal working face; (B) stress influence range of soft floor.
