Stability Analysis of Roof and Rib and Source Control Countermeasures of Ultrahigh Roadway in Deep Coal Mine

<div>Internal structure of surrounding rock: (a) internal structure of roof; (b) internal structure of coal rib (CC means circumferential crack; LC means longitudinal crack; IC means interlaced crack; IZ means intact zone; FC means fracture zone).</div>

Shock and Vibration

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Figure 2

Figure 2: Stability Analysis of Roof and Rib and Source Control Countermeasures of Ultrahigh Roadway in Deep Coal Mine 