Trofymov V. Substantiation of seismic prediction criteria for coal-rock mass fault structure in conditions of contiguous seams

The thesis is devoted to solving the important research-applied problem of refining on a low-amplitude fault structure seismic prediction method. The objective is finding out new regularities of channel wave propagation, reflection and dispersion in complex waveguides formed by contiguous seams. Based on the developed physico-mathematical model, which is basically a joint use of Kondratiev modification method and modulus of rupture method, regularities of the impact of contiguous coal seam on information-bearing attributes of seismic wave fields are identified taking into account typical for the Donets Coal Basin mining and geological mode of occurrence, structure and stress-strain properties of coal seams being worked. The most information-bearing wavetrains and their attributes are determined. These attributes contain information on structure and parameters of rock mass with contiguous seams as waveguides. First in theoretical terms the method to determine ground movement direction along the fault in contiguous seams is described. A method to evaluate types and parameters of faults in contiguous seams is worked out and software is developed for wavefield simulation and analysis. The basic results are employed in the working areas of the four coal mines in the Donets Coal Basin.