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            深圳市谷对岭分岔隧道无中导洞施工与监测技术*
            • 作者: 彭俊聪,杨四海,李晓冉,等
            论文摘要

            深圳市谷对岭分岔隧道无中导洞施工与监测技术*

            彭俊聪1,杨四海1,李晓冉2,3,丁文其2,3,段超2,3 

            (1.中国路桥工程有限责任公司,北京 1000112.同济大学土木工程学院地下建筑与工程系,上海 2000923.同济大学岩土及地下工程教育部重点实验室,上海 200092)

            [摘要]分岔大断面隧道施工常面临地质条件差、周边环境复杂等问题,结合深圳市谷对岭分岔隧道工程情况,采用先行隧道独立成型,后在大断面处实现掉头再施工后行隧道的分岔隧道无中导洞施工方法。梳理4个技术阶段,包括连拱段施工、由先行匝道小断面进入主线大断面施工、主线大断面实现掉头施工及主线大断面施工等关键点。在施工的同时进行全程监控测量,据此针对性提出分部分阶段监测方案,并分析连拱隧道段和大断面段的监测数据结果,从而指导设计,确保施工安全。

            [关键词]隧道;城市分岔隧道;无中导洞;匝道;监测;施工技术

            [中图分类号]U456.3     [文献标识码]A     [文章编号]1002-8498(2021)18-0031-05

            Construction and Monitroing Method of Guduiling Bifurcated Tunnel Without Middle Pilot Heading in Shenzhen

            PENG Juncong1, YANG Sihai1, LI Xiaoran2,3, DING Wenqi2,3, DUAN Chao2,3 

            (1.China Road and Bridge Corporation, Beijing 100011, China; 2.Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China; 3.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China)

            Abstract:To solve the construction problems caused by poor geo conditions and complicated surrounding conditions, combined with the construction of Guduiling Bifurcated Tunnel in  Shenzhen, firstly, a method of independent tunnel forming was adopted, and then, the construction of turning at the large section, and finally the construction of bifurcated tunnel using central pilot free construction technology. And the four construction stages were summarized, including such key points as construction of multi arch section construction from small section of the ramp to large section of main line, construction of turning at the large section, and construction of large section, etc. Meanwhile, the entire process monitoring measurement was carried out during the construction. Accordingly, the monitoring scheme by parts and stages was put forward in this paper, and the monitoring data and results of multi arch tunnel section and large section were analyzed to guide the design and ensure the safety of construction.

            Keywords:tunnels;urban forked tunnels;tunnel without middle pilot heading;ramp;monitoring;construction

            *国家自然科学基金(51578408);深圳东部过境高速公路连线工程项目:复杂环境下浅埋大断面互通隧道结构关键技术研究(20133139);山区高速公路地下互通立交建设与运营安全关键技术研究(云交科教〔201840号)

            [作者简介]彭俊聪,硕士研究生,高级工程师,Email1208662940@qq.com

            [通信作者]李晓冉,硕士研究生,Email1932255@#edu.cn

             

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