Stability Evaluation on Surrounding Rocks of Underground Powerhouse Based on Microseismic Monitoring

<div>Contour of principal stresses after VI level excavation (unit: MPa). (a) The maximum principal stress contour. (b) The minimum principal stress contour.</div>

Shock and Vibration

fig9

Figure 9

Figure 9: Stability Evaluation on Surrounding Rocks of Underground Powerhouse Based on Microseismic Monitoring 