定向断裂爆破是利用聚能药卷改变巷道周边眼的装药结构,利用聚能作用控制裂隙的方向和数量,因而能获得较好的爆破效果。本文主要介绍了定向断裂爆破的机理以及在汾西矿业集团所进行的爆破试验的方案、爆破参数和试验结果。同时对使用聚能药卷前后的爆破效果进行了对比,结果表明,定向断裂爆破可明显提高巷道的成型质量,降低材料消耗。 Directional burst blasting is the use of polyblend rolls to change the charge structure of the surrounding eye of the roadway, and the direction and amount of the fractures are controlled by the action of energy gathering. Therefore, a better blasting effect can be obtained. This paper mainly introduces the mechanism of directional fracture blasting and the blasting test program, blasting parameters and test results in Fenxi Mining Group. At the same time, the blasting effect before and after the use of the poly energy-dispersible drug roll was compared. The results show that directional blasting can obviously improve the quality of the roadway and reduce the material consumption.