This paper introduces the technique of millisecond extruding blasting with wide hole space in city cutting excavation.

本文介绍宽孔距微差挤压爆破技术在城市路堑开挖中的应用。

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Recently, the practice improved that using technique of wide-space small burden blasting can improve the rock crushing, low the big crushing rock rate, reduce the secondary crushing cost.

本文介绍了云浮硫铁矿在台阶应用宽孔距小抵抗线爆破技术改善爆破质量，从而降低爆破成本提高经济效益的情况。

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