空孔直眼掏槽爆破时 ,因槽腔内高压爆生气体膨胀 ,岩石碎块沿轴向向槽外运动。孔口非装药段在爆炸载荷作用下形成爆破漏斗 ,成为腔内抛体的前沿。本文结合模型实验和高速摄影观测 ,探讨槽腔顶部漏斗范围 ,提出顶部漏斗抛掷及作用过程 When a hole is cut by a straight hole, the rock fragments expand along the axial direction due to the expansion of gas in the groove cavity at high pressure. The non-charge section of the orifice forms a blasting funnel under the explosive load and becomes the front of the cavity projectile. Combined with model experiment and high-speed photogrammetry, this paper explores the scope of funnel at the top of the bowl and proposes the process of top funnel throwing and action