Physical Simulation of the Water-Conducting Fracture Zone of Weak Roofs in Shallow Seam Mining Based on a Self-Designed Hydromechanical Coupling Experiment System

Figure 11

Plastic zone and stress distribution map.

(a) Map of the plastic zone at 140 m

(b) Principle stress distribution map

(c) Shear stress distribution map

(d) Vertical stress distribution map

(e) Vertical displacement map