Shock and Vibration / 2019 / Article / Fig 11

Research Article

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

Figure 11

Original microseismic signals and denoised signals collected in the experiment: (a) signal before denoising during excavation; (b) denoised signal during excavation; (c) signal spectrum before denoising during excavation; (d) denoised signal spectrum during excavation; (e) original signal during waiting time; (f) signal after denoising during waiting time.

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