Seam Gas Geological Law and Gas Content Prediction of Zaozhifang Mine

The seam gas distribution law and the gas content prediction was applied to guide the mine gas pre-drainage and to set up the rational mine production operation regulation and the rational development of the coal bed methane.Based on the analysis on the geological structure features of the Zaozhifang Minefield, the g eological factors affected to the mine gas deposits were qualitatively and quantitatively analyzed.The mine gas deposit law was obtained.The gas geological map of C7 seam was drawn.The gas content of C7 seam was increased with the depth increased along the seam inclined orientation.At the south-east part of the mining area with a depth less than 300 m, the max value of the gas content was 18 cm3/g.