Research and application of advance supporting technology for 8.2 m large mining height fully-mechanized face
LI Mingzhong
ZHANG Desheng
LIU Zhuang
XU Yi
Abstract：According to the problems of advance support of large cross-section mining roadway in 8.2 m large mining face in Jinjitan Coal Mine,the double-row multi-section self-moving advanced support frame type was determined by comprehensive geological conditions and propulsion efficiency.Adopting the support concept of low initial support and high engineering resistance and the automatic assurance technology of initial support force,new structures,such as anti-roof guard,walking control and slope connecting beam were developed and the advanced support group of air return lane and transport lane was developed.The downhole test showed that the anti-mine pressure ability of the advanced support was strong,the propulsion efficiency was high,the top roof of the advanced roadway was complete and had good adaptability.The repeated support function of the integral support beam of the advance support to the roof was further analyzed,which could provide a model and reference for the advance support technology of the ultra large height mining face.
Keywords：ultra large mining height faceadvance supportingoffset adjustment mechanismrepeatedly supporting
Publication Date：2017-01-01