Acta Geodynamica et Geomaterialia

Title: THE CAUSES OF MINING INDUCED GROUND STEPS OCCURRENCE - CASE STUDY FROM UPPER SILESIA IN POLAND
Author: Strzalkowski Piotr and Ścigała Roman
DOI: 10.13168/AGG.2017.0013
Journal: Acta Geodynamica et Geomaterialia, Vol. 14, No. 3 (187), Prague 2017
Full Text: PDF file (7.6 MB)
Keywords: post-mining discontinuous deformations, ground steps, predictions of post-mining deformations
Abstract: The case study of a ground steps creation due to underground mining in Upper Silesia Basin, where for many years was conducted intensive hard coal extraction has been presented in this paper. This type of linear discontinuous deformations is considered as an important threat to the surface building constructions and elements of underground technical infrastructure. This threat is even more important, that presently still we do not have methods for predictions of such phenomena, and protection of building constructions against such damages is difficult, if not impossible. On the basis of the analyzes results shown in the paper, the following factors were pointed, that favor the formation of mining-induced ground steps: the presence of fault outcrops in the vicinity of extraction fields, multiple extraction in several coal seams led to the same border and large values of tensile horizontal strain.