Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8129766 | Journal of Sustainable Mining | 2016 | 8 Pages |
Abstract
To determine pillar stability, vertical stress was measured in two adjacent coal pillars which are diamond in shape and located within a row of pillars forming the panel. Two pillars diamond in shape and slightly irregular sides were approximately 860Â m2 and 1200Â m2 in size and 3.5Â m high To measure the increase in vertical stress due to mining, four stress cells were installed in each coal pillar. Four 5-level multipoint rib extensometers measured displacements of all sides within each monitored pillar. The results of stress-state and pillar displacement monitoring allowed pillar loading and yielding characteristics to be described. This data and other analyses are essential to establishing procedures for a safe room and pillar method of mining within the Upper Silesian Coal Basin.
Related Topics
Physical Sciences and Engineering
Energy
Energy (General)
Authors
Petr Waclawik, Jiri Ptacek, Petr Konicek, Radovan Kukutsch, Jan Nemcik,