Research and practice on roll steering mining technology for large mining height and super-long working face
Based on the gas geology and mining technique conditions of 11071 fully mechanized mining face at Liangbei Coal Mine,the real center roll steering plan was compaed with the virtual center's.It was chosen to adopt the roll steering mining around virtual center.The technical parameter indicators of roll steering mining were accurately calculated.At the same time,the process flow and safety technical guarantee measures for roll steering mining were determined.Through practice,it has been proven that this mining plan simplifies the coal transportation system of the machine roadway,solves problems such as virtual center control,support attitude control,scraper conveyor up and down slippage control,overlap control of reversed loader and conveyor,and advance stress control during the roll steering mining period,and achieves uninterrupted advancement of the working face during the roll steering mining period,bringing huge economic benefits and profound technical precipitation to the mine.
fully mechanized super-long working faceroll steering miningroll steering ratiolong and short sumping
NETL
NSTL
万方数据
