Under the condition of certain definite blasting parameters, it was found out that interval charging could reduce unit explosive consumption and also kept good broken effects.
在某些爆破参数确定的条件下，施工中摸索出空气间隔装药结构能降低炸药单耗，同时保证了破碎效果。
The traditional deep-hole blasting for tunnels USES pure clay to stem the blast-holes. The efficient energy availability of explosive is not high and the specific explosive consumption is large.
传统的隧道深孔爆破采用纯炮泥堵塞炮眼，炸药的有效能量利用率不高，炸药单耗量大。
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