摘要
研究目的:本文依托重庆轨道交通5号线TBM区间隧道上跨沪蓉铁路人和场隧道工程,在分析工程重点、难点的基础上,通过对新建地铁隧道的方案优化、施工控制和既有高铁隧道的检测、评估和监测等开展研究,得到经验和成果。研究结论:(1)开展既有高铁隧道检测和评估,以评价方案的可行性和操作性是此类工程得以顺利实施的前提;(2)做好TBM区间隧道上跨高铁隧道施工期间掘进参数的控制、管片背后豆石吹填、回填灌浆及管片底部注浆等措施,是减小对高铁隧道施工影响的保障;(3)对运营高铁隧道选择先进、合理、高效的监测手段进行实时监测,并与铁路相关部门建立有效联动机制,是确保安全的重要和必要手段;(4)本研究成果可为地铁TBM区间隧道上跨高铁隧道施工的影响控制提供借鉴。
Research purposes: This paper relies on the TBM section tunnel of Chongqing Metro Line 5 to overpass the Shanghai-Chengdu railway Renhechang tunnel construction. Based on the analysis of the emphasis and difficulty of the project,the experience and results are obtained through the research on the optimization and construction control of the new metro tunnel,and the detection,evaluation and monitoring of the existing high-speed railway tunnel.Research conclusions:( 1) The inspection and evaluation of existing high-speed railway tunnels could evaluate the feasibility and operability of the scheme,which is the precondition for the successful implementation of such projects;( 2) The control of the excavation parameters,the filling of the pisolite behind the tube,the backfill grouting and the bottom grouting of segments during construction of TBM interval tunnel across high-speed railway tunnels are the guarantees to reduce the impact on the construction of the high-speed railway tunnel;( 3) It is an important and necessary means to select advanced,reasonable and efficient monitoring means for the operation of high-speed railway tunnels and to establish an effective linkage mechanism with relevant railway departments;( 4) The research results can provide reference for the impact control of metro TBM section tunnels construction across high-speed railway tunnel.
作者
张明书
龚伦
陈海勇
孙雪菲
俞景文
ZHANG Mingshu;GONG Lun;CHEN Haiyong;SUN Xuefei;YU Jingwen(China Railway Development Investment Group Co. Ltd, Kunming, Yunnan 650118, China;Southwest Jiaotong University, Chengdu, Sichuan 610031, China)
出处
《铁道工程学报》
EI
北大核心
2019年第7期76-80,104,共6页
Journal of Railway Engineering Society
基金
国家重点研发计划(2017YFC0806000)
国家自然科学基金资助项目(51478392,51178399)
关键词
TBM区间隧道
上跨
高铁隧道
关键技术
安全
TBM interval tunnel
overpass
high-speed rail tunnel
key technology
safety
