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Determination of stress state in rock mass using strain gauge probes CCBO
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SYSNO ASEP 0462414 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Determination of stress state in rock mass using strain gauge probes CCBO Author(s) Waclawik, Petr (UGN-S) RID
Staš, Lubomír (UGN-S) RID, ORCID
Němčík, J. (AU)
Koníček, Petr (UGN-S) RID, ORCID
Kaláb, Tomáš (UGN-S)Number of authors 5 Source Title Procedia Engineering. - Amsterdam : Elsevier BV
Roč. 149, č. 149 (2016), s. 544-552Number of pages 9 s. Publication form Online - E Language eng - English Country NL - Netherlands Keywords Compact Conical ended Borehole Overcoring method (CCBO) ; overcoring ; rock mass ; stress Subject RIV DH - Mining, incl. Coal Mining Institutional support UGN-S - RVO:68145535 UT WOS 000386946500072 EID SCOPUS 84979966760 DOI 10.1016/j.proeng.2016.06.703 Annotation The strain gauge probes of different construction are typically used for determination of stress state rock mass. The modified overcoring method known as the Compact Conical ended Borehole Overcoring method (CCBO) for stress state determination in rock mass was designed in Institute of Geonics of the CAS (IGN) in cooperation with Kumamoto University in Japan. The implemented adjustment of the overcoring method consists mainly in omitting the overcoring phase (stress relief phase). The probe is glued directly to the conically shaped end of a borehole. The data logger located within the conical probe enables continual strain monitoring directly in the conically shaped end of the borehohole during the overcoring procedure. The conical probe used to monitor stress changes, named Compact Conical ended Borehole Monitoring (CCBM), can continuously monitor rock strain changes in key locations due to mining. Many stress measurements using both strain gauge probes CCBO and CCBM were carried out in the last decade. These measurements were performed in varied rock mass adjacent to mine excavations. Most of the stress measurements were carried out in Carboniferous sedimentary rocks as part of the experimental work in the Czech part of the Upper Silesian Coal Basin (USCB). Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2017 Electronic address http://ac.els-cdn.com/S1877705816312206/1-s2.0-S1877705816312206-main.pdf?_tid=c951eea6-768c-11e6-bf0e-00000aab0f01&acdnat=1473425952_96caea37ce97896f79050c5dce211b57
Number of the records: 1