Abstract: We discuss the problem that many sets of series belt conveyor continuous transportation system use coal bunker to lead to the continuity or interruption during the rehabilitation period of initial mining and relay two fully-mechanized caving faces with large dip angle in Changshanzi Coal Mine, analyze the necessity of setting coal bunker to prevent roof falling rock rushing scraper conveyor during the rehabilitation, and clarify that coal bunker provides great persistence utility to the rehabilitation in many sets of series belt conveyor continuous transportation system.