<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Dynamic Influence of Near-Source Seismic Ground Motion on Underground Mine Working Stability Using Time-Frequency Analysis"^^ . "Peak particle velocity parameter is very useful in assessing underground mine working stability. Its application is widespread and\r\nrequires additional analysis of the dominant frequency of the seismic signal. In order to properly analyze the velocity amplitudes of\r\nstrong ground motions generated from seismic sources, time-frequency properties of near-source seismic signals in underground\r\nmines should be quantified. Using numerical calculations, the continuous wavelet transform (CWT) of the recorded near-source\r\nseismic signals in three perpendicular directions was obtained to characterize its time-frequency properties. &e properties of\r\nrecorded strong ground motion velocity seismograms for two high energy seismic events and two blasts from two underground\r\ncoal mines in Poland have been extracted with the use of continuous wavelet transform spectrograms showing the duration time of\r\neach frequency group. Assuming a constant peak particle velocity amplitude on the analyzed seismograms, the duration time of\r\neach frequency group starts to play a key role. &e longer the duration time of the lower frequency group is on the CWT\r\nspectrogram, the more the damaging effect on underground mining excavations can be observed. Varying bandwidths of\r\ndominant frequencies in separate time intervals for the analyzed seismic signals have had significantly different influence on the\r\npotentially damaging effect on underground mining excavations."^^ . "2021" . . "2021" . . "Shock and Vibration"^^ . . . "10709622" . . . . . . . . . . . . . . "Grzegorz"^^ . "Mutke"^^ . "Grzegorz Mutke"^^ . . "Piotr"^^ . "Małkowski"^^ . "Piotr Małkowski"^^ . . "Adam"^^ . "Lurka"^^ . "Adam Lurka"^^ . . "Sandro"^^ . "Carbonari"^^ . "Sandro Carbonari"^^ . . "Central Mining Institute, Katowice"^^ . . . "Central Mining Institute, Katowice"^^ . . . "AGH University of Science and Technology, Kraków"^^ . . . . . . "HTML Summary of #2340 \n\nDynamic Influence of Near-Source Seismic Ground Motion on Underground Mine Working Stability Using Time-Frequency Analysis\n\n" . "text/html" . . . "Upper Silesia" . .