The article reports the modeling results on direct dumping of overburden by cast blasting. The cast factor variation as function of seam occurrence and explosion block parameters is found. Potential improvement of cast blasting to displace overburden to mined-out pit area is described. The ways of enhancing efficiency of direct dumping in gently dipping coal extraction by combination of truck-and-shovel system with direct dumping in Kuzbass are identified.

中文翻译：

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覆岩抛爆提高直接倾倒效率

文章报告了通过抛丸法直接倾倒覆盖层的建模结果。发现了作为接缝发生和爆炸块参数的函数的铸造因子变化。描述了铸造爆破将覆盖层转移到采空坑区的潜在改进。确定了在库兹巴斯采用车铲系统与直接倾倒相结合的方式提高缓倾式采煤中直接倾倒效率的方法。