Stress-state monitoring of coal pillars during room and pillar extraction

0453714 - ÚGN 2016 PL eng C - Konferenční příspěvek (zahraniční konf.)
Waclawik, Petr - Ptáček, Jiří - Kukutsch, Radovan - Němčík, J. … celkem 5 autorů
Stress-state monitoring of coal pillars during room and pillar extraction.
Górnicze zagrozenia naturalne 2015. Katowice: GIG Katowice, 2015, s. 1-10. Zagrozenie naturalne - bariery rozwoju górnictwa. ISBN N.
[Medzinarodowa Konferencja Naukowo - Techniczna z cyklu Górnicze zagrozenia naturalne 2015 /22./. Targanice (PL), 03.11.2015-06.11.2015]
Grant CEP: GA MŠMT ED2.1.00/03.0082; GA MŠMT(CZ) LO1406
Institucionální podpora: RVO:68145535
Klíčová slova: stress-state * monitoring * room and pillar * coal pillar
Kód oboru RIV: DH - Báňský průmysl vč. těžby a zpracování uhlí

Current mining activities of the OKD mines are primarily oriented to coal seams within the Karvina Formation in Karvina SubBasin. A considerable amount of coal reserves are situated in protection pillars that lay under built-up areas. The longwall mining method is not applicable in these areas because significant deformation of the surface is not allowed. For this reason OKD company is considering to use alternate methods of mining to minimise subsidence. The room and pillar method has been trialled with proposed coal pillars to minimise strata convergence. The method was implemented in the shaft protective pillar at the CSM Mine and is the first application of room and pillar mining method within the Upper Silesian Coal Basin.To determine pillar stability, vertical stress was measured in two adjacent coal pillars located within the row of pillars forming the panel. Two pillars diamond in shape and slightly irregular sides were approximately 860 m2 and 1200 m2 in size and 3.5 m high.
Trvalý link: http://hdl.handle.net/11104/0254450