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Measurement of Induced Stress Change During Longwall Exploitation
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SYSNO ASEP 0352367 Document Type A - Abstract R&D Document Type The record was not marked in the RIV R&D Document Type Není vybrán druh dokumentu Title Measurement of Induced Stress Change During Longwall Exploitation Author(s) Staš, Lubomír (UGN-S) RID, ORCID
Souček, Kamil (UGN-S) RID, ORCID
Hortvík, Karel (UGN-S)
Kajzar, Vlastimil (UGN-S) RID, ORCID
Knejzlík, Jaromír (UGN-S)Number of authors 5 Source Title Czech - Polish Workshop On Recent Geodynamics of the Sudeten and Adjacent Areas /11./. - Praha : ÚSMH AV ČR, 2010 / Schenk V. ; Kontny B. - ISSN N - ISBN N
S. 27-27Number of pages 1 s. Action Czech - Polish Workshop On Recent Geodynamics of the Sudeten and Adjacent Areas /11./ Event date 04.11.2010-06.11.2010 VEvent location Třešť Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords stress measurement ; conical gauge probe ; stress tensor Subject RIV DH - Mining, incl. Coal Mining CEZ AV0Z30860518 - UGN-S (2005-2011) Annotation This paper describes the first experience from in-situ determination of the total stress tensor changes during a long wall extraction. A device using measurement of local deformations on conical ended borehole bottom was used for long term monitoring of stress changes induced by underground mining activity. The problems of rock stress and its measurement have been investigated in the Institute of Geonics for a long time. At present, we need a method for determination of stress and its changes as reaction to the impact of the underground human activity. The paper deals with principles and used metod of strass measurement, basic description of the equipment and experiment in situ. A new device for determination of stress change tensor was developed on the basis of strain measurement applied to a conical shaped borehole bottom. Within the frame of this development a special probe interlocked to data logger was realized. This type of device was used for the long-term monitoring of the stress – strain changes. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2011
Number of the records: 1