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Application of the Terrestrial 3D Laser Scanning in Room and Pillar Trial at CSM Mine
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SYSNO ASEP 0496339 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Application of the Terrestrial 3D Laser Scanning in Room and Pillar Trial at CSM Mine Author(s) Kukutsch, Radovan (UGN-S) RID, ORCID
Kajzar, Vlastimil (UGN-S) RID, ORCID
Waclawik, Petr (UGN-S) RID
Němčík, J. (AU)Number of authors 4 Source Title 10th Asian Rock Mechanics Symposium - The ISRM International Symposium for 2018. - Singapur : ISRM Singapur, 2018 - ISBN 978-981-11-9003-2 Number of pages 9 s. Publication form Print - P Action ARMS 10 - Asian Rock Mechanics Symposium - The ISRM International Symposium for 2018 /10./ Event date 29.10.2018 - 03.11.2018 VEvent location Singapur Country SG - Singapore Event type WRD Language eng - English Country SG - Singapore Keywords 3D laser scanning ; room and pillar ; roadways deformation Subject RIV DH - Mining, incl. Coal Mining OECD category Mechanical engineering R&D Projects LO1406 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UGN-S - RVO:68145535 Annotation 3D laser scanning is a unique technology used for the description and subsequent modeling of real
shape of spatially complex underground mining environment. Groundbreaking was its application in
the pilot deployment of the Room and Pillar method at the CSM mine, where this method was used
for the first time within the Upper Silesian Coal Basin, also known to have one of the most difficult
mining and geomechanical conditions in the world. Very difficult mining conditions at depth over 800
m warranted searching for complex geotechnical tool or method that would capture all changes
without distortion. Despite some shortcomings, 3D laser scanning was selected, although there is still
no suitable device for dusty and humid mining environment. During the pillar development phase,
comprehensive geotechnical monitoring was undertaken including the frequent scanning of pillar
movement using 3D laser scanning technology. Based on repeated time-separated measurements,
spatio-temporal analyses of deformation changes during ongoing mining were carried out. These
analyses captured dynamic changes in coal rib, roof and floor movements of designated roadways
while developing the pillar panel. In addition, time dependent long term post-mining measurements
quantified additional strata movements within the panel enabling assessment of the long term pillar
and mine roadway stability. The time-lapse scanning indicated variable pillar rib movement with
maximum measured displacements of 60 cm. The scans indicated that in most cases, the bottom of the
seam displaced more than the top of the rib side due to low floor strength causing large floor heave of
up to 100 cm. During the 3-year monitoring, more than 2 billion spatial points were captured that can
be used for further analysis.Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2019
Number of the records: 1