High Performance Longwall Mining in Deep and Methane Rich Coal Deposits in Germany Taking into Account Methods and Technologies for Controlling the Estimated Gas Liberation
In German underground hard coal mining，extraction has had to be moved to ever-greater depths，using the multi-seam mining method.On the one hand this requires high quality longwall entries，which are normally used twice.On the other hand successful control of gas emissions is adecisive factor if longwall mining is to be productive.Despite extremely difficult geologicalconditions with winning depths of more than 1，100 m，rock temperatures of over 60℃ andreleasable gas contents in the working seams up to 9 m3/t coal and in the surrounding strata(for 1 ton saleable coal)up to 40 m3/t,it has been possible to implement high-performancelongwall mining operations.Several factors are important for this success today and in thefuture：a program for advance calculation of gas emissions developed on the basis of practicalexperience，modern gas drainage and monitoring technology，supporting and sealing off the seamedge areas using innovative construction material machinery-and last but not least，a carefully trained and experienced mining team.
gas emissions longwall mining operations Gas Drainage
Michael Bauer
Mine Safety Seetion of the Cenral Teehnology of Deutsche Steinkolne AG．,Grrnany
国内会议
安徽淮南
英文
57-75
2007-10-25（万方平台首次上网日期，不代表论文的发表时间）