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Innovative Approach to Monitoring Coal Pillar Deformation and Roof Movement Using 3D Laser Technology

  1. 1. 0475742 - UGN-S 2018 RIV NL eng C - Konferenční příspěvek (zahraniční konf.)
    Kajzar, Vlastimil - Kukutsch, Radovan - Waclawik, Petr - Němčík, J.
    Innovative Approach to Monitoring Coal Pillar Deformation and Roof Movement Using 3D Laser Technology.
    Procedia Engineering - ISRM European Rock Mechanics Symposium EUROCK 2017. Amsterdam: Elsevier Ltd., 2017 - (Koníček, P.; Souček, K.; Konečný, P.), s. 873-879. 191. ISSN 1877-7058.
    [ISRM European Rock Mechanics Symposium EUROCK 2017. Ostrava (CZ), 20.06.2017-23.06.2017]
    Grant CEP: GA MŠk(CZ) LO1406; GA MŠk ED2.1.00/03.0082
    Institucionální podpora: RVO:68145535
    Klíčová slova: 3D laser scanning * TLS * room and pillar * rib movement pillar deformation
    Kód oboru RIV: DH - Báňský průmysl vč. těžby a zpracování uhlí
    Obor OECD: Mining and mineral processing

    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.
    Trvalý link: http://hdl.handle.net/11104/0272372
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