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通过南平长大隧道的施工与实践,对不同围岩类别隧道钻爆开挖施工进行总结,阐述隧道钻爆的影响因素,钻爆参数确定方法,进行隧道钻爆设计研究,从而获得最佳进尺效果和洞身周边爆破效果。
Through the construction and practice of the Nanping long tunnel, the construction of drilling and blasting excavation in different surrounding rock tunnels are summarized. The influencing factors of tunnel blasting, the determination of drilling and blasting parameters, the design of tunnel drilling and blasting are studied, and the best footage Effect and the surrounding hole blasting effect.