断层破碎带暗挖通道超前大管棚施工技术  

Construction Technology of Advanced Large Pipe Roof for Subsurface Tunnel Excavation in Fault Fracture Zone

作　　者：巩军辉 GONG Junhui(China Railway 18th Bureau GroupThird Engineering Co.,Ltd.,Zhuozhou,Hebei072750,China)

机构地区：[1]中铁十八局集团第三工程有限公司,河北涿州072750

出　　处：《施工技术（中英文）》2024年第7期46-49,共4页Construction Technology

基　　金：中国铁建股份有限公司2022年度科技研究开发计划及资助课题(2022-C1)。

摘　　要：地处断层破碎带的地下工程通常面临着复杂地质环境带来的安全威胁,给工程施工带来了严峻的挑战。基于济南市轨道交通4号线暗挖通道工程,沿通道纵向拱顶范围打设超前大管棚对进洞前地层进行加固,该技术在复杂地质条件下应用灵活,有效支护了隧道周围土体,降低了地表沉降风险。以实际工程为基础,详细阐述了超前大管棚施工技术的优越性,介绍了关键施工参数和方法。Underground engineering located in fault fracture zone usually faces the security threat brought by complex geological environment,which brings severe technical challenges to engineering construction.Based on the tunnel excavation project of Jinan Rail Transit Line 4,a large pipe shed is built along the longitudinal arch of the tunnel to strengthen the strata before the tunnel.This technology is flexible under complex geological conditions,effectively supporting the soil around the tunnel and reducing the risk of surface subsidence.On the basis of practical engineering cases,the advantages of construction technology of advanced large pipe shed are expounded in detail,and key construction parameters and methods are provided.

关 键 词：地下工程 隧道 断层破碎带 超前大管棚 施工技术 

分 类 号：U459[建筑科学—桥梁与隧道工程]