浅埋偏压隧道大变形监测分析及施工处治技术研究  

Analysis of Large Deformation Monitoring and Research on Construction Treatment Technology of Shallow-buried Bias Tunnel

作　　者：朱克南 杜立辉 侯海明 王平让 Zhu Kenan;Du Lihui;Hou Haiming;Wang Pingrang(Beidahuang Road and Bridge Construction Co.,Ltd.,Harbin 150090,China;Zhengzhou University of Aeronautics,Zhengzhou 450046,China)

机构地区：[1]黑龙江农垦建工路桥有限公司,哈尔滨市150090 [2]郑州航空工业管理学院,郑州市450046

出　　处：《北方交通》2023年第6期70-74,共5页Northern Communications

基　　金：河南省科技攻关计划(社发领域)项目(192102310489,202102310243)。

摘　　要：针对某高速公路隧道浅埋偏压特点及施工中出现的大变形问题,通过初期支护病害现场调查和变形监测,系统分析隧道发生大变形的原因,并提出相应的施工处治措施。研究结果表明:隧道发生大变形的主要原因是施工工序不当及初期支护不足,次要原因包括水文地质条件、地形地貌、围岩状况及其他因素;通过实施临时支撑加固、反压回填、地表处理、岩体注浆加固及拱架更换等施工处治措施,变形速率和变形量都明显减小,大变形得到了有效控制,确保了隧道的安全顺利施工。In view of the characteristics of shallow-buried bias of a highway tunnel and the problem of large deformation during the construction,the causes of large deformation of the tunnel are systematically analyzed through the field investigation of initial support diseases and deformation monitoring,and the corresponding construction treatment measures are put forward.The research results show that:the main reasons for large deformation of the tunnel are improper construction procedures and insufficient initial support,the secondary reasons include hydrogeological conditions,terrain,surrounding rock conditions and other factors;the deformation rate and amount are significantly reduced,and large deformation is effectively controlled by implementing the construction treatment measures such as temporary support reinforcement,backpressure backfilling,earth surface treatment,rock mass grouting reinforcement and arch frame replacement and so on,so as to ensure the safe and smooth construction of the tunnel.

关 键 词：隧道 浅埋偏压 大变形 现场监测 处治技术 

分 类 号：U455[建筑科学—桥梁与隧道工程]