用深孔微差爆破技术成功地拆除了复杂环境下的四个大体积桥墩。
By use of deep-hole millisecond blasting technique, four large-volume bridge piers under complicated circumstances were successfully demolished.
高台段深孔孔内微差爆破技术在我国的首次应用，为中小型石灰石矿山高台段开采提供了切实可行的方法。
Millisecond delay technology of high step and deep hole is the first application in China, it offers a realistic method for high step exploitation of middle and small scale limestone mine.
本文简要介绍了深孔松动微差控制爆破技术。
Short delay controlled blasting technology for deep hole loose is presented in this paper.
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