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Rock mass fracturing in main gate roof behind advancing longwall face
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SYSNO ASEP 0430258 Document Type A - Abstract R&D Document Type Není vybrán druh dokumentu Title Rock mass fracturing in main gate roof behind advancing longwall face Author(s) Waclawik, Petr (UGN-S) RID
Ptáček, Jiří (UGN-S) RID
Vavro, Martin (UGN-S) RID, ORCID
Koníček, Petr (UGN-S) RID, ORCID
Kukutsch, Radovan (UGN-S) RID, ORCIDNumber of authors 5 Source Title 5th International Colloquium on Geomechanics and Geophysics. GECO 2014, 5. - Ostrava : Ústav geoniky AV ČR, 2014 / Koníček P. ; Souček K. ; Heroldová N. - ISBN 978-80-86407-49-4
S. 45-46Number of pages 2 s. Publication form Print - P Action 5th International Colloquium on Geomechanics and Geophysics Event date 24.06.2014-27.06.2014 VEvent location Ostravice, Karolínka Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords main gate ; longwall exploatation ; RQD testing ; rock mass fracturing ; fracturing zone prediction Subject RIV DH - Mining, incl. Coal Mining Institutional support UGN-S - RVO:68145535 Annotation To increase the stability of roadways, high cable bolts and short steel beams are increasingly used nowadays, which should lead higher stability of the supporting steel arches during both driving of roadways and primarily during mining of longwall panels in the Czech part of the Upper Silesian Coal Basin. This high anchoring is also obtained by the substitution of middle hydraulic props used to stabilize steel arches support ahead of the advancing longwall. If the roadways are re-used, high cable bolts are used to subsequently stabilize a support frame construction behind the advancing longwall. Anchoring in a high non-fracturing rock mass of a roadway roof is necessary for the effective function of these cable bolts. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2015
Number of the records: 1