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

<div>Vertical stress and height of the water level in the roof during the excavation process. (a) No. 1-No. 4, vertical stress. (b) No. 5-No. 8, vertical stress. (c) No. 9 and No. 10, vertical stress. (d) Height of water level and fracture zone.</div>

Geofluids

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Figure 8

Figure 8: 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 8 | Physical Simulation of the Water-Conducting Fracture Zone of Weak Roofs in Shallow Seam Mining Based on a Self-Designed Hydromechanical Coupling Experiment System 