Abstract:

In datong yungang mine mining height over geological structure and local change support problem, through the forecast flush with directions, and the analysis of rock pressure support damage effects, compared the arrangement "hilt" transport along the tank after wash with a big move change support plan, and "spindle move cut lane" directly into the move change support plan, and the cutting roadway bolt + anchor beam + anchor group + net + monomer column joint support, large section change support technology and working face and cut lane through before and after the ventilation system safety technology have been discussed in detail. Practice shows that the spindle move cut lane "directly into the move replacement of the damaged support technology short construction period, driving less quantity, saving the supporting materials and avoid the loss of coal pillar, the roof, ventilation, electrical and mechanical equipment operation, construction technology to realize the safe and effective control.