The Reasonable Mining Sequence of the Coal Seam Group in Mountain

Based on the geological conditions of Songhe Coal Mine in Guizhou province, comprehensive consideration from the technical, safety, economic factors, the study designed the proper mining sequence for the coal mine. Numerical simulation with UDEC software and building a multi-objective analysis model is use to compare the different programs, and found the stress concentration of the coal seam roof and roof vertical displacement is different with different mining sequence, and the study optimized the reasonable coal seam mining sequence, and analysis showed the stress concentration of the coal seam roof in a low range with the mining sequence of 3^#,6^#,9^#,4^#,and the pressure behavior phenomenon was not strong.