Mining Technology Practice Under Complex Geologic Structure Working Face

Through reforming roadway,the study aims to optimize the working face layout.by moving parts of face’s equipments,the mining face passes through fault F₁₃₁ with a drop height of 18 m.Based on the treasonable blasting parameters,the study carries out the concussion blasting to break top to pass through DF₂₀ fault with a drop height 7.7 m.These two methods are applied successfully in the same work-face to lighten the effects from the complicated geological conditions towards mining,reduce frequency of fully mechanized mining coal work-face removing,achieve continuous mining and improve the recovery coefficient.