Abstract:

The shallow of Wangershan mining is limited by a subjective condition,cannot achieve access recovery with scrapers.Because of the No.I-2 orebody broken,the mining efficiency is low.After many mining method optimization,and based on the existing projects,studied and applied “the upward horizontal fan drift mining method” recovery mode.Using local super strong support and taking cementation top filling to solve the difficulties of second access recovery milestones and mining exposure space and landslides mining.This process in practice, first of all,reserving a way back into the mined-out area as far as possible,which is for the other path to reduce the labor intensity of mud after filling silt cleaning space.Furthermore,adopting two steps of the closed road to prevent leakage of slurry phenomenon.And taking the tiberium spikes,etc to ensure top safety.This method can improve the production efficiency and meet the requirements expansion.The mining technique has large application value.

Key words: Broken orebody, Fan drift, Wangershan mining, Mining method