既有山岭隧道桥隧串接洞口处落石整治方案研究  

Study on the Treatment Scheme of Rockfall at the Bridge and Tunnel Connecting Openings of Existing Mountain Tunnel

作　　者：耿庆军 GENG Qingjun(China Railway 20th Bureau Group 4th Engineering Co.Ltd.,Qingdao Shandong 266061,China)

机构地区：[1]中铁二十局集团第四工程有限公司,山东青岛266061

出　　处：《铁道建筑技术》2023年第6期171-174,共4页Railway Construction Technology

基　　金：中铁二十局集团有限公司科技研发计划项目(2022217007)。

摘　　要：隧道洞口段危岩落石灾害,由于其随机性和破坏力强,严重威胁铁路运行和人员安全,已成为我国三大地质灾害之一。本文分析隧道洞口形式、工程所在地水文地质条件以及潜在风险,因地制宜提出防护网-桥梁-棚洞一体化结构体系作为桥隧串接形式洞口落石整治方案。该体系在保证既有桥梁稳定性、整体落石防治能力以及保障正常铁路运营等方面优势明显;同时考虑空间、地形和经济等因素,制定合理有序的棚洞钢结构吊装方案,既保证高空吊装安全,又可兼顾铁路正常运营。Rockfall hazard at tunnel entrance has become one of the three major geological hazards in our country because of its randomness and destructive power,which seriously threatens railway operation and personnel safety.In this paper,the form of the tunnel entrance,the hydrogeological and geographical conditions and potential risks at the site of the project are analyzed.According to the local conditions,the integrated structure system of protective net,bridge and shed tunnel is proposed as a bridge and tunnel series form and cave entrance rockfall treatment scheme.The system has obvious advantages in ensuring the stability of the existing bridge,the overall rockfall prevention ability and the guarantee of normal railway operation.At the same time,considering the space,terrain and economic factors,a reasonable and orderly steel structure hoisting scheme for sheds and caves is developed,which not only ensures the safety of high-altitude hoisting,but also takes into account the normal operation of the railway.

关 键 词：铁路山岭隧道 桥隧串接洞口 落石整治 吊装方案 

分 类 号：U453.1[建筑科学—桥梁与隧道工程] U216.41[交通运输工程—道路与铁道工程]