Study on Rockburst Nucleation Process of Deep-Buried Tunnels Based on Microseismic Monitoring

Figure 9

Topographical map of the evolution of microseismic energy density during TBM tunneling in diversion tunnel #3 (January 20 to February 21, 2011): (a) dissipated energy density cloud map for January 20–February 5, 2011; (b) dissipated energy density cloud map for January 20–February 10, 2011; (c) dissipated energy density cloud map for January 20–February 16, 2011; and (d) dissipated energy density cloud map for January 20–February 21, 2011.

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