小直径盾构在综合管廊建设中的关键技术研究

发布时间：2018-01-10 04:09

本文关键词：小直径盾构在综合管廊建设中的关键技术研究　出处：《铁道工程学报》2017年04期 　论文类型：期刊论文

【摘要】：研究目的:地下综合管廊可以高效率地利用地下空间,是未来城市市政管线的发展方向,但目前主要采用明挖法施工,对周边环境影响较大且投资较高。随着盾构法在隧道建设中日益广泛的应用,探索将小直径盾构推广到地下综合管廊的建设中,在降低工程实施难度、降低综合投资等方面有着可观的优势,但必须针对综合管廊建设的特点,对小直径盾构隧道在管片结构规格、盾构机技术标准等方面进行适应性研究,以期形成一套适用于综合管廊的盾构规格标准。研究结论:(1)利用小直径盾构修建综合管廊的方案是合理可行的;(2)针对通用管线和专用管线,可以确定综合管廊小直径盾构的内径采用4 100 mm是经济合理的;(3)以项目所处的工程地质和周边环境情况为依据,确定了中心支撑的辐条式土压平衡盾构机;(4)采用壁厚300 mm、环宽1 000 mm的盾构管片,在满足承载力和耐久性要求的同时,能更好地适应多变的平面和纵断面线路;(5)该研究成果可供采用盾构法修建综合管廊参考。
[Abstract]:Research purpose: underground comprehensive pipe gallery can use underground space efficiently, which is the development direction of city municipal pipeline in the future, but at present, it is mainly constructed by open excavation method. With the increasing application of shield method in tunnel construction, the application of small diameter shield tunneling to the construction of underground integrated pipe corridor is explored to reduce the difficulty of project implementation. There are considerable advantages in reducing comprehensive investment, but it is necessary to study the adaptability of small diameter shield tunnel in segment structure specification, shield machine technical standard and so on according to the characteristics of integrated pipe gallery construction. In order to form a set of shield specification standard suitable for the integrated pipe corridor. Conclusion: 1) it is reasonable and feasible to use the small diameter shield to build the integrated pipe corridor. 2) for the general pipeline and special pipeline, it is economical and reasonable to determine the inner diameter of the small diameter shield machine of the integrated pipe gallery with a diameter of 4 100 mm; (3) based on the engineering geology and surrounding environment of the project, the center-supported spoke earth pressure balance shield machine is determined. 4) adopting shield segment with 300 mm wall thickness and 1 000 mm ring width, which can meet the requirements of bearing capacity and durability, and can better adapt to the changeable plane and longitudinal section lines; 5) the research results can be used as a reference for the construction of integrated pipe gallery by shield method.
【作者单位】：中铁第一勘察设计院集团有限公司;
【分类号】：TU990.3;U455.43
【正文快照】： 研究结论:(1)利用小直径盾构修建综合管廊的方案是合理可行的;(2)针对通用管线和专用管线,可以确定综合管廊小直径盾构的内径采用4 100 mm是经济合理的;(3)以项目所处的工程地质和周边环境情况为依据,确定了中心支撑的辐条式土压平衡盾构机;(4)采用壁厚300 mm、环宽1 000 mm的

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