大断面隧道爆破设计与改进

摘要

In light of the significant meaning of tunnel blasting excavation for constructions schedule,cost control and safety management,com-bining with new Lan-Yu railway Huashi tunnel engineering case,the paper studies the tunnel basting excavation design process of large-section railway,summarizes problems occurring in the engineering,and shows solving measures,which guarantees the tunnel excavation design scientif-ic,efficient and economic.%鉴于隧道爆破开挖对施工进度、成本控制和安全管理的重要意义，结合新建兰渝铁路花石隧道的工程案例，就大断面铁路隧道爆破开挖的设计过程进行了研究，总结了工程中出现的问题，并给出了解决措施，保证了隧道开挖设计的科学性、有效性、经济性。