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

Figure 7

A projection map of the spatiotemporal distribution of microseismicity during TBM tunneling in diversion tunnel #3 (January 20 to February 21, 2011). (a) Microseismicity distribution from January 20 to February 5, 2011; (b) microseismicity distribution from January 20 to February 10, 2011; (c) microseismicity distribution from January 20 to February 16, 2011; and (d) microseismicity distribution from January 20 to February 21, 2011.

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