预裂爆破是一项新的爆破技术。它主要是沿着矿、岩爆破开挖区的轮廓线,以一定的距离,合理布置一排钻孔,孔内采用串状小直径药卷,在采掘区爆破之前预先引爆。从而可获得一个符合设计轮廓,稳定性好,光滑平整的采掘面。我矿现在处于山坡露天,过去采用的是普通的爆破方法,对于岩体的震动和破坏难 Presplitting blasting is a new blasting technique. It is mainly along the contour lines of the mine and rock blasting excavation area. A certain distance is used to arrange a row of drilling holes. The small diameter coil in the hole is used for pre-detonation before the blasting in the mining area. This results in a smooth, smooth mining face that conforms to the design profile. Mine is now in open hillsides, the past is used in general blasting method, the rock for the vibration and damage difficult