Furthermore, the paper also describes the charge shapes, the differential time and the guide hole stemming.
对药包形态、微差时间、导硐堵塞也作了描述。
Three dimensional finite element computing model is established and the effect of stemming length to deep hole bench blasting is studied by three dimensional finite element method.
采用三维有限元数值分析法，通过建立三维有限元计算模型，分析堵塞长度对堵塞区有效应力场的影响。
Simulation on effect of stemming length to deep hole bench blasting;
大块率是评价露天矿台阶深孔爆破质量的重要指标之一。
The hole remained may be blocked up frequently after blasting if the solid granular material was used for stemming.
固体颗粒封孔的装药结构频繁发生炮孔堵塞。
The hole remained may be blocked up frequently after blasting if the solid granular material was used for stemming.
固体颗粒封孔的装药结构频繁发生炮孔堵塞。
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