Research on economy efficiency by complex coal seam mining

Complex coal mining economic research is an important factor for method determining. Based on the Muchenjian mine reverse "S" coal mining as the research object, we established different schemes of piecewise mining coal economic model of the 5# coal seam and analyzed the economic benefits of the different mining schemes. Considering the influence of the three main factors that coal production, the time value of money and the service life of mining equipment, on coal production cost of coal seam mining 5.Then we make economic benefit analysis and finally determine that we will adopt the pseudo sharp inclined section of flexible shield support mining method in heavy pitch section and tilt segment using prone pseudo inclined dense pillar mining method in inclined section. This conclusion of this paper may provide a new thought for the complex coal seam mining.