The Effect of Mining Remnants on Elastic Strain Energy Arising in the Tremor-Inducing Layer

A vast majority of hard coal deposits in Poland have a multi-seam structure, hence the presence mining remnants left from previous operations. The impact those (exploitation edges or residual pillars) can further intensify geomechanical phenomena occurring rock mass, leading to changes original state stress. This applies all layers within strata, including thick and coherent ones (referred as tremor-inducing layers) where impacts are likely trigger tremors, thus enhancing bursts hazard. In light model strata recalled study, it is assumed that homogeneous isotropic elastic found between considered remnant (which revealed stress distribution), medium modelled half-plane. Development bedded was brought down analysis interacting layers, biharmonic equation satisfied for each layer respective be solved by integral Fourrier transform method. exploitation edge pillar on strain energy illustrated recalling Burzyński’s criterion. Strain analysed various deformation properties surrounding methods extraction seam underneath layer. results study evidence change vicinity may affect energy, which tremor hazard levels areas.