铁路隧道工程地表塌坑治理措施研究  

Research on Treatment Measure of Surface Sinkhole on Railway Tunnel

作　　者：陈霄汉 CHEN Xiaohan(China Railway First Survey and Design Institute Group Co.,Ltd.,Xi’an,Shaanxi 710043,China;Lanzhou Jiaotong University,Lanzhou,Gansu 730070,China)

机构地区：[1]中铁第一勘察设计院集团有限公司,陕西西安710043 [2]兰州交通大学,甘肃兰州730070

出　　处：《施工技术(中英文)》2025年第3期89-94,107,共7页Construction Technology

基　　金：中国国家铁路集团有限公司科技研究重大课题(K2020G034)。

摘　　要：侯月铁路某隧道由于施工期间塌腔未完全回填,受降雨、列车振动等外部因素的长期作用,塌腔上部岩土体向下塌落形成地表塌坑,导致隧道衬砌发生严重剥落掉块。为降低地表塌坑对隧道的影响,有效加固既有隧道衬砌结构,采用支护结构-围岩相互作用连续介质模型分析隧道和围岩整体变形与受力情况,制定增设套衬结构和径向注浆加强拱部围岩的加固方案,同时对地表塌坑采用轻质材料进行回填,取得良好的加固效果。During the construction of a tunnel on the Houma⁃Yueshan railway,incomplete backfilling of a collapse cavity,along with long⁃term external factors such as rainfall and train vibrations,caused the overlying rock and soil to collapse downward,forming surface sinkholes,it led to severe spalling and dislodgment of the tunnel lining.In order to reduce the impact of surface sinkholes on the tunnel and effectively reinforce the existing tunnel lining structure,a continuous medium model of the support structure and surrounding rock interaction was used to analyze the overall deformation and stress conditions of the tunnel and surrounding rock.A plan was devised to install an additional arch structure and to reinforce the arch area’s surrounding rock through radial grouting.Additionally,lightweight materials were used to backfill the surface sinkholes,achieving favorable reinforcement results.

关 键 词：铁路 隧道 衬砌 塌坑 变形 加固 

分 类 号：U25[交通运输工程—道路与铁道工程]