Study and Application of Mining Technology for Oversize Drop Reverse Fault in Fully Mechanized Working Face
The large drop reverse fault seriously affects the safe production of coal mining working face.The reverse fault is rare in Yongxia mining area.The technical difficulties of large drop reverse fault mining in fully mechanized mining face were firstly studied and analyzed in the 2902 working face of Juji coal mine.Through the reverse analysis of the blasting mechanism and effect,the blasting law of fully mechanized working face was explored and the blasting parameters were optimized.Reduction of the rock breaking amount was achieved due to reasonable control of the mining level.The control measures of supporting roof coal were formulated,which effectively realizes the safe and rapid passage through the reverse fault,and has a strong reference value for the mining of similar tectonic coal seam.
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