使用VCR采矿法进行采矿时，必须就地进行爆破漏斗实验，以确定利用球状药包落矿时的爆破参数。

By employing the VCR mining method, the experiment of blasting funnel must be carried out on the spot in order to ensure the parameters in mining by globular dynamite charge.

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本文在室内模型试验与现场爆破漏斗试验基础上，着重论述了单个闭合状裂隙对单个球状药包爆破破碎效果的影响。

Based on the indoor model tests and field blasting crater tests, the paper discussed the influence of single closed fissure upon fragmentation effect of blasting with single spherical charge.

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