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当前,铁路隧道施工方法主要采取爆破开挖。隧道爆破作业主要采取设计爆破网路为“孔内同段、孔外微差”的非电微差起爆技术,起爆雷管选取国产Ⅱ系列15段非电毫秒雷管,掏槽眼、掘进眼选用?32乳化炸药,周边眼选用?25光爆炸药,目的是尽量减少爆破对相邻支护结构及周边围岩的震动影响。也
At present, the construction methods of the railway tunnel mainly adopt blasting and excavation. Tunnel blasting operations mainly take the design of blasting network as “hole in the same section, the hole outside the differential” non-differential detonation technology, blasting detonator selected domestic Ⅱ series of 15 non-electric millisecond detonators, cut the eye, driving eye The choice of 32 emulsion explosives, the surrounding eye use 25 light explosives, the purpose is to minimize the impact of blasting on the adjacent support structure and the surrounding rock vibration. and also