Research on technology of passing through the lower roadway in ultra long comprehensive mining faces
When the 454 meters ultra long comprehensive mining face passes through the lower roadway,the base of hydraulic support passing directly above the roadway may cause the lower roadway to collapse,and pose a safety hazard to personnel and equipment on the working face.This article introduces the coal cutting process,working face inclination design,and support technology for the lower roadway in the 454 meters ultra long comprehensive mining face.The research results indicate that when using this technology to pass through the lower roadway of the 454 meters ultra long comprehensive mining face,there are no accidents caused by the collapse of the lower roadway,resulting in personnel and equipment falling into the collapse zone,nor any movement of the scraper conveyor on the working face.
ultra long comprehensive mining facelower roadwayworking face inclination adjustmenttechnology research
NETL
NSTL
万方数据
