Gas Geology Law And Outburst Prediction In The Nuodong Coal

Coal mine safety production of gas is "the first major killer." Gas was born in coal seam, occur in coal seam, is a gas geological-mass, its migration, preservation and occurrence of geological tectonic evolution by state control.Nuodong coal mine as a research area, the use of gas geology theory, the mine field measurement of gas content, gas pressure data and field observations the distribution of coal structure study on the plate tectonic evolution of the East River coal mine gas waxy health, storage, transport , Cover the control action. Geological structure in the region by the previous research results, from the tectonic evolution, the regional stress state and structural features and other aspects of analysis, the tectonic stress Panjiang overlay zone is located to the main pressure-shear stress, manifested as Successively by the two positive and negative rotational shear tectonic movement, especially in a strong function of Yanshan Movement.Fold shape Puan structural system is constructed Panjiang master patterns within the system a series of back, straight to the slanting line distribution, and performance-based plastic deformation. Mine does not communicate with each other within the fissures, forming easy-to-gas occurrence in the geological conditions and the formation of the fault zone is also the danger of gas accumulation block domain. Gas based combined with the measured parameters of the mine data, in accordance with the geological conditions of the mine gas is divided into three geological units, gas content and depth of a positive correlation between coal, coal seam depth is a waxy East Main controlling factors of gas emission. In accordance with "the provisions of coal and gas outburst" of gas content of Nuodong coal will be greater than the 8m 3 / t of the region is forecast to highlight the danger zone. This study mine planning, ventilation, coal bed methane extraction and utilization of coal and gas outburst prediction reference.