Aiming at the support problem of the thick coal top dynamic pressure affected roadway in 8206 return airway,we comprehensively applied the research methods such as on-site research,literature search,theoretical analysis,etc.,analysed the defects of the original support scheme of this roadway and the direction that should be optimised,and designed a set of"high prestressing anchor cable overall support scheme",which has been successfully carried out in the engineering practice.The observation of mine pressure after digging support shows that after the implementation of the optimised support scheme,the amount of top and bottom plate migration,the amount of two gangs migration,and the value of top plate off layer have been effectively controlled,and safe and efficient digging has been achieved.
thick coal roofdynamic pressure influencemining roadwayperimeter rock stabilitysupport scheme
NETL
NSTL
维普
万方数据
