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Innovative Approach to Monitoring Coal Pillar Deformation and Roof Movement Using 3D Laser Technology
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SYSNO ASEP 0475742 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Innovative Approach to Monitoring Coal Pillar Deformation and Roof Movement Using 3D Laser Technology Author(s) Kajzar, Vlastimil (UGN-S) RID, ORCID
Kukutsch, Radovan (UGN-S) RID, ORCID
Waclawik, Petr (UGN-S) RID
Němčík, J. (AU)Number of authors 4 Source Title Procedia Engineering - ISRM European Rock Mechanics Symposium EUROCK 2017. - Amsterdam : Elsevier Ltd., 2017 / Koníček P. ; Souček K. ; Konečný P. - ISSN 1877-7058 Pages s. 873-879 Number of pages 7 s. Publication form Online - E Action ISRM European Rock Mechanics Symposium EUROCK 2017 Event date 20.06.2017 - 23.06.2017 VEvent location Ostrava Country CZ - Czech Republic Event type WRD Language eng - English Country NL - Netherlands Keywords 3D laser scanning ; TLS ; room and pillar ; rib movement pillar deformation Subject RIV DH - Mining, incl. Coal Mining OECD category Mining and mineral processing R&D Projects LO1406 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) ED2.1.00/03.0082 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UGN-S - RVO:68145535 UT WOS 000416996000111 DOI 10.1016/j.proeng.2017.05.256 Annotation Monitoring of pillar and roadway deformations is one of the most important issues in geotechnical engineering and mining
practice. The use of 3D laser technology is ideal to monitor strata displacements in underground excavations enabling complex
spatial data capture of the entire space around monitored pillars including all roof and rib deformation which occurs during
the pillar excavation. This method based on repeated scans, can monitor the excavation surface movement ranging from a few
mm to more than 600 mm. The 3D laser scanner was used to monitor the coal mine roadways and pillar stability in room
and pillar panel trial in the Ostrava-Karvina coal basin (OKD Mines, Czech Republic). The 3D data analysis indicated rib
movement that ranged from 250 mm to more than 600 mm, a large floor heave that was regularly brushed and practically no roof
movement of very strong roof strata overlaying the whole panel area. All scanned results compared well to the results from
the extensometry and other measuring instruments. The results further indicated that the mined roadway cross sectional area
decreased between approximately 15-25 % during the first 7 months of monitoring and stabilized at 5 % after another 7 months.
Further monitoring is planned to identify any long term creep in the room and pillar panel.Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2018 Electronic address http://www.sciencedirect.com/science/article/pii/S1877705817323962
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