Известия Томского политехнического университета: Инжиниринг георесурсов (Aug 2018)
Detection and mapping of tectonic disturbances as indicators of outburst hazard zones by MOGT-3D method detailed prospecting in the conditions of the Qaraghandy coal basin
Abstract
The relevance. Life safety in coal mines is the most important task and determines the direction of measures to eliminate and prevent the adverse factors such as coal, rock and gas outburst. At present, the factor of outburst hazard considerably determines both technological principles and organizational and economic aspects of development of coal deposits. The issue of forecasting zones of geological disturbances, with simultaneous consideration of the gas factor, stress-strain state of the massif as well as physical and mechanical properties of the coal seam is very relevant today. The article describes the method of seismic exploration, which allows detecting location and character of tectonic dislocation as indicators of outburst hazard zones. The aim of the research is to specify the tectonic structure of the southern wing of the «Tentekskaya» mine field for indicating possible blows. The object: target coal seams of the tentek and dolinsk formations of the southern wing of the «Tenteskaya» mine field. Methods: seismic survey by the method of the common depth point of MOGT-3D, construction of detailed three/dimensional seismo-geological models characterizing structural-tectonic frame of the main coal seams. Results. The results of geological and geophysical studies are collected, systematized and analysed; the authors have refracted in details the reflecting horizons, controlling the structure of coal seams т1 and д6 and identified the discrete tectonics, including low-amplitude tectonic disturbances. Conclusions. According to the seismic data the authors constructed the structural-tectonic hypsometric plans of coal seams, reflecting all the tectonic disturbances, obtained by MOGT-3D, as well as folded disturbances. The information is the basis for planning mining and mining operations.
