The practice has shown that the initiation delay time is an important factor affecting cut blasting effect.
工程实践表明，微差起爆时间是影响掏槽效果的一个重要因素。
Experimental results show that the cut blasting effect of bottom charge is better than that of conventional charge.
试验结果表明，底部空气柱装药掏槽爆破效果优于常规装药效果。
The pretreatment measures, shape and size of blasting cut, blasting parameters, detonation networks, safety technology measures and blasting effect are discussed.
着重介绍了预处理措施、爆破切口形状与尺寸、爆破参数、起爆网路、安全技术措施及爆破效果等。
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