爆破火药;
The results of the calculation show that when the blasting with not-coincident powder charge is happened, the effective affecting radius of stress waves is about eight times of the diameter of the blasthole.
计算结果表明,采用不偶合装药的爆破方法时,应力波有效作用半径约为炮孔直径的8倍。
The test and use of the controlled blasting of black powder in granite dimension stone production in Shangcheng County, Henan is described with working face production elements and reasonable blasting parameters recommended.
介绍了黑火药控制爆破法在河南省商城县花岗岩开采中的试验与应用,给出了工作面开采要素和合理的爆破参数。
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