Experimental Study on Stress Evolution and Microseismic Signals under Vibration Conditions of Coal during Excavation and Subsequent Waiting Time

<div>Stress evolution after opening the tunneling hole: (a) stress-time curve of 4 measuring points; (b) diagram of stress distribution in different locations over time.</div>

Shock and Vibration

fig4

Figure 4

Figure 4: Experimental Study on Stress Evolution and Microseismic Signals under Vibration Conditions of Coal during Excavation and Subsequent Waiting Time 

Figure 4 | Experimental Study on Stress Evolution and Microseismic Signals under Vibration Conditions of Coal during Excavation and Subsequent Waiting Time 