Study On Gas-Geology Law And Drainage Block Division Of13_-1 Coal Seam In Panxie Mining Area

Gas-geology law is the foundation of gas extraction block division, and gasextraction block division is the key to comprehensive gas prevention and control.In this paper, taking Panxie mining area for the study. it’s mainly used the regionalgeological evolution theory and structure filtering control theory, it combined withgeology evolutionary history of region and mining area, it studies different geologicalstructure to control the occurrence and distribution of coal seam for gas so that provedgas-geology law in Panxie mining area，and it considers the main influencing factorsfor the occurrence and distribution of gas in Panxie mining area which are geologicalstructure and the depth of coal seam.According to the analysis of the geological structure of mining area to divide gasgeological unit, it combined with the measured gas data and forecasted gas content andgas pressure of each gas geological unit of13_-1coal seam in Panxie mining area; Panxiemining area is divided into seven blocks, including two favorable drainage blocks, twoextraction block and three adverse drainage block，analysis the block division basis andgas-geology lawï¼›And it calculated the coalbed methane resources of13_-1coal seam inPanxie mining area，the amount is148.36×10⁸m³. It take the map of block division inPanxie mining area. it’s provides an important basis for the comprehensive managementof gas and methane （CBM） development and utilization in the mining area，andprovides an important reference for the mining area to develop methane developmentplanning.