long hole blasting

The detonating cord can satisfy the requirements for long hole blasting in mine.

该产品克服了普通导爆索在露天爆破工程中的各种特殊环境和装药条件下的缺陷，能够满足矿山深孔爆破的要求。

study on underground middle-long hole blasting technology

井下中深孔爆破技术研究

research and application of crushing pit excavation by controlled long hole blasting

深孔控制爆破开挖破碎井技术的研究及应用

study on the long-hole blasting design scheme of a quarry

采石场深孔爆破设计方案的研究

application of long-hole blasting technique in double track railway engineering construction

深孔爆破技术在铁路复线施工中的应用

the blasting boulder yield is an important quality indicators in the step long-hole blasting of surface mine.

大块率是评价露天矿台阶深孔爆破质量的重要指标之一。

the experimental study on the technique of long hole blasting in tonglushan copper-iron mine is summed up in this paper.

本文总结了深孔爆破技术在铜绿山铜铁矿的试验研究情况。

influencing factors of long-hole blasting technique for hard rock tunnel and reasonable determination of these factors

硬岩隧道深孔爆破技术影响因素及参数的合理确定

exploding technology about long hole blasting in rock roadway

岩巷中深孔爆破技术

application of spacing technique in long hole blasting of openpit bench

间隔技术在露天台阶深孔爆破中的应用

way to reduce the large fragment rate in long hole blasting

降低中深孔爆破落矿大块率的途径

The site test of long hole blasting in coal seam is carried out. The test results indicate that long hole blasting in the crossing hole can improve the suction quantity of firedamp effectively.

进行了深孔爆破的现场试验，试验结果表明穿层深孔爆破可以有效地增加瓦斯抽放量。