Mining Method To Short Distance And Large Thickness Coal Seams Intashan Coal Mine Of State Development&Investment Corporation In Datong City

Paper takes No.3-5coal seam mining of SDIC(State Development&InvestmentCorporation) Tashan Coal Mine as engineering background, with the integrated use oftheoretical analysis, mechanical test, in situ observation and numerical simulationmethods, researched the key problems, such as mining technology, roadway layout andcoal pillar design of close distance specially thick coal seam and makes many usefulconclusions. The results show that, fully mechanized top coal caving technology withlarge mining height is the best choice for No.3-5coal seam development. The fit lengthof working face is180m, working resistance of hydraulic support is15000kN, miningheight is4to4.5m. The arrangement of mining roadway need keep away fromcoverage area of coal pillars in No.2coal seam. The25m coal pillars in No.3-5coalseam are the best choice for technique and economic effects. The research work linkstheory with practice, which abundant the theoretical basis of most thickness coal seamsmining, and give the beneficial guidance to the production and development of theenterprise.