客运专线铁路隧道下穿既有高速公路施工技术  

Techniques for a Passenger-dedicated Railway Tunnel Underpassing Existing Expressway

作　　者：陈建国[1] 

机构地区：[1]中铁隧道集团一处有限公司,重庆401121

出　　处：《现代隧道技术》2010年第6期62-66,共5页Modern Tunnelling Technology

摘　　要：对于下穿既有高速公路的超浅埋大断面铁路隧道的施工,其施工难点主要在于如何保证快速、安全地通过。在下穿沈海高速公路的笔架山铁路隧道工程中,通过采用优化的CRD工法以及施工过程中的爆破震动控制、地表及洞内监测等安全控制措施来指导现场施工,既满足了进度要求,同时保证了施工安全。For super-shallow large section railway tunnel underpassing an existing expressway,the major difficulty is how to ensure the quick and safe operation of underpassing.Optimized CRD construction method,blasting vibration control in construction process,surface and underground monitoring and other security control measures were adopted to guide the construction of railway tunnel underpassing an expressway,thereupon advance rate and safety of construction of the tunnel were ensured.

关 键 词：铁路隧道 下穿高速公路 优化工法 安全控制 

分 类 号：U455.411[建筑科学—桥梁与隧道工程]