| Our country pay great attention to the coal mine safety management, but as aworldwide problem, coal mine safety situation is still severe. In the formation of coalgas is in the process of generating and kept in coal seam and the surrounding rock moregas mixture composition, is to influence the first element of safety production in coalmine. Geological tectonic evolution control the gas generation, migration and save,complex geological structure level control the risk of coal and gas outburst, thereforethe research of the theory of gas geology is of great significance.Regional geological evolution theory and construct step by step control theory tostudy the tectonic evolution of the Taihang Mountains, Yangquan mine tectonicevolution and evolution of sedimentary environment of mining area; tectonic evolutionShidui Yang Quan mine coal measure strata gas generated, stored, transported Yeecoverage; statistics site rich mine measured and the exploration of gas pressure of gasemission, gas content and other related data to study the gas geology of the mine law.Jing Lu coal mine gas geological data analysis, fault, fold, coal seam roof and floorlithology, coal seam burial depth, hydrogeology, and the thickness of coal seam gasoccurrence. Analysis obtained in a variety of geological factors, the main controllingfactors of methane occurrence coal seam depth. By analyzing the obtained linearrelationship between gas content and depth, the forecast model predicted gas content.The sub-source prediction method to make a face of coal seam gas emission in theforecast. Divided gas weathering zone; preliminary forecast of a seam of coal and gasoutburst danger zone. |
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