Fig. 5
Schematic diagram of step-by-step excavation for study of working face width: (a) 2000 m excavation of 1802 face; (b) Excavation of the 1802 face for another 2100 m.
Fig. 5 | Scientific Reports
Schematic diagram of step-by-step excavation for study of working face width: (a) 2000 m excavation of 1802 face; (b) Excavation of the 1802 face for another 2100 m.
