Number of the records: 1
Rotation of principal axes and changes of stress due to mine-induced stresses
- 1.
SYSNO ASEP 0447884 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Rotation of principal axes and changes of stress due to mine-induced stresses Author(s) Ptáček, Jiří (UGN-S) RID
Koníček, Petr (UGN-S) RID, ORCID
Staš, Lubomír (UGN-S) RID, ORCID
Waclawik, Petr (UGN-S) RID
Kukutsch, Radovan (UGN-S) RID, ORCIDNumber of authors 5 Source Title Canadian Geotechnical Journal - ISSN 0008-3674
Roč. 52, č. 10 (2015), s. 1440-1447Number of pages 14 s. Publication form Online - E Action International Colloquium on Geomechanics and Geophysics /5./ Event date 25.06.2014-27.06.2014 VEvent location Karolinka Country CZ - Czech Republic Event type WRD Language eng - English Country CA - Canada Keywords mining ; principal stress ; stress distribution ; modified overcoring Subject RIV DH - Mining, incl. Coal Mining R&D Projects ED2.1.00/03.0082 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LO1406 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UGN-S - RVO:68145535 UT WOS 000363475700004 DOI 10.1139/cgj-2014-0364 Annotation This research project comprises stress monitoring, primarily of the changes induced by longwall mining or destress blasting, which was realized in a mine of the Ostrava-Karviná Coalfields (Upper Silesian Coal Basin). Verification of the stress field response to stresses induced by different geological or mining factors was the main aim of the research project. Stress change monitoring in the region of the advanced longwall was carried out using seven stress probes. In all, seven boreholes were instru- mented with compact conical ended borehole monitoring (CCBM) probes for continuous stress monitoring of the stress–strain changes due to mining and the destress blasting effect. Compact conical-ended borehole overcoring (CCBO) and CCBM probe instal- lation were carried out before the start of the longwall mining. Data of the stress changes in all seven probes were recorded weekly and, after the longwall advanced, daily. Analysis of the stress changes was based on the idea of original stress distribution, which is based on long-term experiences in rock mass behavior in similar geological and mining conditions. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2016 Electronic address http://www.nrcresearchpress.com/doi/full/10.1139/cgj-2014-0364#.VgqDPpc70mt
Number of the records: 1