D'yachenko N. The influence of strike-slip tectonics on deformation of surface relief due to underground coal mining

The thesis is devoted to solution of the problem related to the influence of strike-slip faults on the recent deformation processes of the ground surfaces due to mine subsidence. On the basis of detailed systematization and treatment of geological and geodetic leveling data, geometric modeling of structural and mining data, integrated morphostructural and morphometric analysis of subsidence surface topography there has been proposed a new solution of the problem of the delineating deformation anomalies of ground surfaces. The obtained results proved that zones of modern deformation anomalies in the mine subsidence relief due to underground coal mining are spatially correlated with faults within tectonic zones of strike-slip origin. Inhomogeneous development of recent deformation anomalies of the ground surface is caused by mosaic block structure of coal-bearing sediments which bear marks of synthetic and antithetic Riedel shears. Peculiarities for tectonic patterns of the Donets and Lviv-Volyn coal basins have been investigated. Small displacement faults have been traditionally interpreted in the Donbas as normal or reversed faults. However, most of them have strike-slip component of move-ment. Clockwise and counter-clockwise rotation of block within strike-slip zones is recorded in the Donbas and clockwise rotation - in the Lviv-Volyn basin. Results of the research are implemented in the forecast of ground surface defor-mation hazards within the limits of closed coal mines in Donetsk.