List of products by author: Masashi Nakaya

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  Risk Assessment for Stability at Tunnel Cutting Face - Spectrogram Analysis for Waves Generated by Blasting

  Abstract: The blasting method is used for tunnel excavation in hard rock. In the blasting, waves such as seismic waves propagating in rock and blasting sounds propagating in tunnel are generated. Spectrogram is signal processing in time and frequency domain, frequency characteristics are evaluated for rock condition at a tunnel cutting face. In this study, spectrogram analysis is carried out for blasting...

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