Study on five-in-one rapid excavation technology of rock roadway with fully-mechanized method

ln order to solve the problem of slow excavation of rock roadways and tense prospect of mining and excavation continuance in Pingdingshan Mining Are a,the main factors that constraints fully-mechanized excavation speed were studied,and a five-in-oneful -mechanized raidexcavation technological system was put forward. Taking the gas drainage roadway for the 24011 working face as an example reasonable roadway excavation horizon and section were determined; a fully-mechanized operation line was establis hed; a time-space vertical intersection constru:tion method and a rapid and active support of surounding rock control technology were proposed; a series of security techmnologies including finegeological detection,comprehensive dust removal and hard rock vibration blasting were developed; and fimally a five-inone fally-mechanized rapidexcavation technology system including roadway horizon and section design,rational selection of equipment and matching facilities ,construction echnology eficient support technology and construction safety and security was formed. The practice showed that this technology system realized high-efficiency rock breaking.continuous waste stone exhaust efficient support and dust removal.and the excavation speed was up to 312 meters per month which significantly increased the speed of rock roadway excavation.