Based on the Longdingshan coal mine 9102 back to the wind tunnel over the F5 fault residual stress area,the roadway for the right gang appeared serious deformation phenomenon,and accompanied by the roadway coal column collapsed,the roof plate sinking crushing and so on,serious constraints on the roadway safety and rapid digging problems,Longdingshan coal mine through the technical research,in the optimisation of the premise of the support of the roadway decided to take the perimeter of the rock"L-beam+T-beam shed"joint strengthening support technology.L-type steel+T-type steel shed"joint strengthening support technology.Through the actual application effect,after adopting the reasonable and effective support for the 9102 backwind tunnel tectonic stress area,the phenomenon of collapsing coal columns and roof leakage was effectively controlled,and the measured deformation of the roof plate was controlled below 210 mm,the deformation of the two gangs was controlled below 235 mm,and the load of the roof plate and the gang anchors was controlled below 110 kN,which has achieved remarkable application results.
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