Use of the permeability test of Carboniferous rocks in the underground coal mines located in the Upper Silesian Coal Basin

摘要

Carboniferous rock permeability tests can be used both for documenting hydrogeological and gas conditions, as well as for predicting the possibility of pre-exploitation demethanation of seams and rock mass surrounding mining excavations. The article describes the research process of rarely performed non-destructive profiling of permeability of hard rocks in different directions (x, y, z) using a PDPK-400 permeameter created by Micrometrics. The solution can be applied in mining hydrogeology, and in particular in the assessment of the water hazard in mines located close to reservoirs in flooded mine, evaluation of water filtration through safety pillars and in determining zones with increased permeability, among others for the migration of mine gases to demethanize the deposits, e.g. through holes from the surface.