利用全息激光动光弹等测试手段，对岩巷定向断裂爆破成缝机理进行实验研究，并在井下进行了生产试验结果表明，孔壁切槽、切缝药包及线性聚能装药控制爆破均具有明显的定向断裂作用在巷道掘进中，可以提高巷道的成形质量，使眼痕率达９５％以上具有广阔的应用前景 The mechanism of directional fracture cracking in rock tunnel was experimentally studied with holographic laser dynamic photoelastic test, and the production test was conducted downhole. The results show that the hole wall slot, kerf kits and linear shaped charge control Blasting has obvious directional fracture  In the roadway tunneling, can improve the quality of roadway forming, so that the eye marks rate of 95% or more  has broad application prospects