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介绍旦架哨隧道软岩爆破参数选择、影响因素及在 II类围岩弧形导坑分步开挖爆破和 III类围岩短台阶开挖爆破的实施效果分析。
The selection of soft rock blasting parameters, influencing factors and the effect analysis of step excavation blasting in the arc-shaped pilot tunnel of type II and the excavation blasting of the short excavation of the type III surrounding rock are introduced.