广东省李屋排小净距隧道施工技术研究  

Research on Construction Technology of Liwupai Small Spacing Tunnel in Guangdong Province

作　　者：徐宗匠 XU Zongjiang(China Railway 14th Bureau Group Co.,Ltd.,Jinan,Shandong 250000)

机构地区：[1]中铁十四局集团有限公司,山东济南250000

出　　处：《工程技术研究》2022年第21期210-212,共3页Engineering and Technological Research

摘　　要：小净距隧道作为一种新型结构型式隧道,因其独特的适应性与优越点,近年来在铁路、公路等交通建设中的应用越来越广泛。此类隧道是一种结合独立双洞与连拱隧道两者优点于一体的隧道,并且造价控制和防水处理更简便,但存在难以保证施工质量与安全等缺陷。基于此,文章以李屋排小净距隧道工程为案例,深入分析总结了弱围岩偏压小净距隧道从钻爆设计到二次衬砌施工的施工流程,以及监控量测要点,研究结果可供类似工程参考使用。As a new type of tunnel, small spacing tunnel is widely used in railway, highway and other traffic construction in recent years because of its unique adaptability and advantages. This kind of tunnel is a tunnel that combines the advantages of independent double-tunnel and multi-arch tunnel, and the cost control and waterproof treatment are simpler, but there are some defects such as difficulty in ensuring the construction quality and safety. Based on this,taking Liwupai small spacing tunnel project as an example,this paper deeply analyzes and summarizes the construction process of small spacing tunnel with weak surrounding rock bias from drilling and blasting design to secondary lining construction, as well as the key points of monitoring and measurement. The research results can be used as reference for similar projects.

关 键 词：小净距隧道 施工技术 监控量测 超前支护 钻爆设计 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]