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Seismic effect of destress rock blasting
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SYSNO ASEP 0332339 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Seismic effect of destress rock blasting Author(s) Koníček, Petr (UGN-S) RID, ORCID
Ptáček, Jiří (UGN-S) RID
Przeczek, A. (CZ)Number of authors 3 Source Title Górnicze zagrozenia naturalne 2009 /16./, 4/2. - Katowice : Glowny Instytut Górnictwa, 2009 / Lipowcan A. - ISSN 1643-7608 Pages s. 110-119 Number of pages 10 s. Action Górnicze zagrozenia naturalne 2009 Event date 03.11.2009-06.11.2009 VEvent location Andrzychów Country PL - Poland Event type EUR Language eng - English Country PL - Poland Keywords underground coal mining ; rock burst ; destress rock blasting Subject RIV DH - Mining, incl. Coal Mining CEZ AV0Z30860518 - UGN-S (2005-2011) Annotation Destress rock blasting in adjacent rocks belongs to the most important rockburst hazard measure in Czech part of Upper Silesian Coal Basin (USCB). The main goal of that measure is disintegration of competent rock in overlaying strata (sandstones and conglomerates) and stress release in rock massif. Release of high energy concentrated in rock massif is very important too. Quantity of released energy is evaluated due to seismic effect. The usual method of evaluation of release effect based on seismic monitoring data is described in the paper. It is calculated as a ratio of registered seismic energy to theoretic energy released by explosive during blasting. Contemporary system of seismic effect evaluation is discussed in the paper. Paper presents some results of new data analysis obtained from seismological monitoring in this region in period from 2000 to 2008 too. On the basis of analyzed data (about 900 seismic events) a new system of release effect evaluation is proposed and a plan of next research. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2010
Number of the records: 1