Review of methods for deflected buildings located in mining area of Upper Silesia

Abstract

The underground coal mining creates the post-mining void, which causes displacements of a massif, both above and under the void. One of the consequences of underground mining is a change in inclination of the surface area. Hence, buildings in the mining area are vertically deflected. This paper presents the procedure for constructions whose deflection was caused by underground coal mining in Upper Silesia. It describes the historical approach, theoretical analyses, and successful rectification processes performed by non-uniform elevation of buildings. The reviewed literature on procedures for deflected building, some of themobserved by the author, and the concepts described in the literature lead to conclusions that the method guaranteeing the purpose of restoring the deflected building is rectification based on non-uniformelevation of jacks with pistons. The scope of other methods is limited to very special cases.