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Power spectra of quarry blasting works measured in different depths
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SYSNO ASEP 0539568 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Power spectra of quarry blasting works measured in different depths Tvůrce(i) Kaláb, Zdeněk (UGN-S) RID
Lyubushin, A. A. (RU)Celkový počet autorů 2 Zdroj.dok. Acta Montanistica Slovaca. - : Technická univerzita v Košiciach - ISSN 1335-1788
Roč. 25, č. 3 (2020), s. 302-309Poč.str. 8 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. SK - Slovensko Klíč. slova seismic measurement ; power spectrum ; spectral time-frequency ; diagram Vědní obor RIV DC - Seismologie, vulkanologie a struktura Země Obor OECD Environmental and geological engineering, geotechnics Způsob publikování Open access Institucionální podpora UGN-S - RVO:68145535 UT WOS 000642070300004 EID SCOPUS 85101181643 DOI 10.46544/AMS.v25i3.4 Anotace Vibrations generated by quarry blasting are the most intensive manifestation of technical seismicity. Comparative measurements of vibrations from blasting generated in open-pit mines were performed in the Jeroným Mine near Čistá (Czech Republic). A detailed evaluation of vibrations on underground spaces is very important here because this mine is a significant heritage site of medieval tin mining. The distance between the nearest feldspathic quarry named Krásno and the Jeroným Mine is 4.7 km east, Vítkov quarries (granite) is located north in the distance of 6.3 km. Maximum values from the nearest quarry Krásno are usually within the range of 10-3 – 10-2 mm.s-1. Prevailing frequency range of recorded waves is 1 - 6 Hz for both quarries.
To qualify seismic loading of mine, one seismic station was located on the surface, the second one in the mine at a depth of about 30 m. Power spectra could be used for distinguishing, but the difference in spectra shapes is rather evident. Especially the difference is most explicit for the frequency range 70 - 100 Hz between power spectra of surface and underground records. Fitted trends were calculated for the mentioned frequency range of power spectra. Spectral time-frequency diagrams were also defined.
Pracoviště Ústav geoniky Kontakt Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Rok sběru 2021 Elektronická adresa https://actamont.tuke.sk/pdf/2020/n3/4kalab.pdf
Počet záznamů: 1