邻近既有线浅埋偏压隧道控爆开挖施工技术

Construction Technology of Controlled Explosion Excavation of Shallow Buried Biased Pressure Tunnel Near the Existing Line

随着日益增长的国家交通基础设施的建设,新建隧道邻近既有线隧道工程越来越多,有效控制新建工程对既有线隧道结构安全影响成为必须考虑的问题。本文结合某邻近既有线隧道的新建铁路浅埋偏压单线隧道施工实践,从施工防护、控制爆破设计、监控量测等关键技术进行介绍,为今后同类工程建设提供借鉴作用。

With the increasing construction of national transportation infrastructure,there are more and more new tunnels adjacent to existing lines,so it is necessary to effectively control the impact of new tunnels on the safety of existing lines.In this paper,based on the construction practice of the new shallow buried bias single-line railway tunnel near the existing railway tunnel,the key technologies such as construction protection,controlled blasting design,monitoring and measurement are introduced,which can provide reference for the construction of similar projects in the future.