Calculation of Subsidence for Room and Pillar and Longwall Panels

Authors

Anton Sroka, Technische Universität Bergakademie Freiberg, Germany
Krzysztof Tajdus, Strata Mechanic Research Institutes, Polish Academy of Science
Axel Preusse, RWTH Aachen, Germany

Document Type

Conference Paper

Publication Date

2011

Publication Details

A. Sroka, K. Tajdus and A. Preusse, Calculation of Subsidence for Room and Pillar and Longwall Panels, 11th Underground Coal Operators' Conference, University of Wollongong & the Australasian Institute of Mining and Metallurgy, 2011, 83-90.

Abstract

A European method of surface subsidence calculation for partial room and pillar and longwall panel mining of coal deposit is presented. The article focuses on the Knothe’ method, that describes the subsidence trough by the Gauss influence function method. This method provides calculation of tilt, curvature radius, horizontal and vertical movements, and horizontal strain of the surface subsidence trough. The method to forecast surface subsidence serves to design exploitation with respect to minimalisation of its influence so that the forecast subsidence should not exceed a limit value.