复杂环境下某特大悬索桥隧道锚施工难点及安全应对措施  

Construction Difficulties and Safety Measures for Tunnel-type Anchorage of Super Suspension Bridge in Complex Environment

作　　者：余家富[1] 王腾飞[1] 苏杨[1] 祁舒燕 YU Jiafu;WANG Tengfei;SU Yang;QI Shuyan(China Railway Major Bridge Reconnaissance&Design Institute Co.,Ltd.,Wuhan,Hubei 430050,China)

机构地区：[1]中铁大桥勘测设计院集团有限公司,湖北武汉430050

出　　处：《施工技术（中英文）》2022年第5期62-65,共4页Construction Technology

摘　　要：某西南山区悬索桥隧道锚具有锚洞断面大、成洞难度大,轴线倾角大、出碴困难,隧道锚洞与铁路隧道施工相互影响等难点。通过对铁路隧道与隧道锚不同施工工序进行理论分析,得出合理的相邻洞室开挖工序,并合理控制爆破振动速率、施工工序,加强施工期的监控量测、施工管理、应急预案等,以确保洞室施工安全。通过采取合理的安全应对措施,可确保隧道锚及铁路隧道施工安全。Tunnel anchor of a suspension bridge in southwest mountainous area has many difficulties, such as large section of anchor tunnel, great difficulty in tunnel forming, large axis inclination, difficult mucking, interaction between tunnel anchor tunnel and railway tunnel construction, etc. Through the theoretical analysis of different construction processes of railway tunnel and tunnel anchor, the reasonable excavation process of adjacent caverns is obtained. Reasonably control the blasting vibration rate and construction procedures, and strengthen the monitoring and measurement, construction management and emergency plan during the construction period to ensure the safety of cavern construction. Ensure the safety of tunnel anchor and railway tunnel construction through reasonable safety countermeasures.

关 键 词：悬索桥 隧道锚 铁路隧道 安全 施工技术 

分 类 号：U455[建筑科学—桥梁与隧道工程]