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Seismological Activity During Room and Pillar Hard Coal Extraction at Great Depth
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SYSNO ASEP 0475754 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Seismological Activity During Room and Pillar Hard Coal Extraction at Great Depth Author(s) Schreiber, J. (CZ)
Koníček, Petr (UGN-S) RID, ORCID
Stoniš, M. (CZ)Number of authors 3 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. 67-73 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 room and pillar ; induced seismological activity ; mining geomechanics 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 000416996000009 EID SCOPUS 85023209721 DOI 10.1016/j.proeng.2017.05.155 Annotation A first attempt of using the Room and Pillar mining method in the Czech Republic was implemented in the southern part of the Upper Silesian Coal Basin. This stratigraphical unit is well known for its complex geological structure with more than 40 main coal seams vertically distributed in the area of about 122 km2 of active mines and a complex slide/overlap fault system. The fact that the extraction of coal by this method is realised at a depth around 900 m below the surface has also made it one of the deepest Room and Pillar mining sites in the world. These facts brought lead to several questions. The main question connected to sustaining the safety of the workers before and after the advance of the mining works has resulted in this study of the prediction of unnatural seismological activity based on data that were collected during and after the excavation of the coal seam. Also, we ask whether the methods can be used for the prediction of inhomogeneous stress distributions in this kind of openings. Seismological monitoring, which is the main goal of this paper, was supplemented by stress and deformation measurements in coal pillars and surrounding rocks. More stations were added to the network of seismic stations of the coal mine at different levels surrounding the Room and Pillar site. We give the first results of the evaluation of seismic activity during the driving of the roadway in the first mining panel. We describe the site and mining conditions, details about seismological network, and a comparison of seismic activity with the gate driving advance and creation of coal pillars. This is compared to stress changes in the coal pillars. 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/S1877705817322956
Number of the records: 1