摘要
研究目的:苏州轨道交通2号线齐门北大街站—金民东路站区间盾沟隧道下穿西气东输管道。通过本研究,分析西气东输管道的受力条件和变形能力,拟选择一个经济合理的保护方案,保证盾构机下穿西气东输管道工程的安全。研究结论:本文提出桩梁托换和跟踪注浆两种保护方案解决盾构机掘进下穿西气东输管道的沉降变形问题并阐述保护方案各方面的优缺点,最终选择跟踪注浆方案。跟踪注浆方案对管道沉降虽然不能准确控制,但可控制在变形允许的范围内,同时注浆设备相对较小,施工占地小,操作简便,工程费用低,适宜于对地下管道的沉降控制;同时配合盾构掘进的精心施工、同步注浆、信息化施工,最终保证了西气东输管道的安全。本工程可为城市轨道交通遇到类似工程提供借鉴。
Research purposes： The Shield tunnel between the Qimen North Street Station and the Jinmin East Street Station of the Line 2 of the Suzhou Rail Transit under - passes the west - east gas pipeline. The research was clone to analyze the load bearing condition and deformation capacity of the west - east gas pipeline to select a reasonable protection scheme for the purpose of ensuring the safety of the west - east gas pipeline when the shield machine under - passes the pipeline. Research conclusions ：The pile and beam underpinning protection scheme and tracing grouting protection scheme were presented to overcome the problems of the deformation and settlement of the pipeline caused by shield machine under - passing the pipeline. The introduction was given to the advantages and disadvantages of these two schemes. The tracing grouting scheme was chosen. Although, with the tracking grouting scheme, the deformation of the pipeline was not controlled accurately, but the deformation was controlled to the allowable range. In addition, the tracing grouting scheme had the features of using smaller grouting device, occupation of less land, easy operation, low cost and being available for control of the pipeline settlement. Finally, the safety of the pipeline was ensured by adopting this scheme while the tunneling of the shield machine was strictly controlled with the synchronous grouting and informatization construction. The project can provide the reference to the similar works.
出处
《铁道工程学报》
EI
北大核心
2012年第10期70-74,共5页
Journal of Railway Engineering Society
关键词
盾构隧道
西气东输管道
保护方案
shield tunnel
west- east gas pipeline
protection scheme
