Research Article

Influence of Mine Earthquake Disturbance on the Principal Stress of the Main Roadway near the Goaf and Its Prevention and Control Measures

Figure 12

Plane distribution of microseismic events before and after prevention and control of main roadway. (a) August 2017; (b) September 2017; (c) October 2017; (d) November 2017; (e) December 2017; (f) August to December 2017.
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