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深孔柱状装药阶段崩矿炮孔的上下端部附近的矿岩处于侧向崩矿空区和凿岩硐室底板或拉底空间两个自由面状态下，不合理的装药结构将在硐室底板和拉底空间引起后冲带炮。后冲带炮在硐室底板形成的斜面影响后续装药施工，在拉底空间产生大块。结合工程实践分析了后冲带炮的原因及对策。
Deep columnar charge stage collapse mine blasthole near the upper and lower ends of the ore rock in the side of the collapse of the mine and the hollow chamber floor or floor space two free surface state, the unjustified charge structure will be in Chamber floor and bottom space caused by red belt gun. After the blasted cannon formed in the chamber floor slant subsequent loading construction, in the bottom space to produce large pieces. Combined with engineering practice, the reason and countermeasure of rear blasted gun were analyzed.