精选优质文档-倾情为你奉上英文原文High Productivity A Question of Shearer Loader Cutting SequencesK. Nienhaus, A. K. Bayer & H. Haut, Aachen University of Technology, GER1 AbstractRecently, the focus in underground longwall coal mining has been on increasing the installed motor power of shearer loaders and armoured face conveyors (AFC), more sophisticated support control systems and longer face length, in order to reduce costs and achieve higher productivity. These efforts have resulted in hig
