›› 2017, Vol. 38 ›› Issue (S1): 395-401.doi: 10.16285/j.rsm.2017.S1.049

• 岩土工程研究 • 上一篇    下一篇

大连地铁5号线跨海隧道设计关键技术

李鸿博1,贾 峰2,李 靖3,李硕标1   

  1. 1. 中交第二公路勘察设计研究院有限公司,湖北 武汉 430056;2. 武汉大学 土木建筑工程学院,湖北 武汉 430072; 3. 武昌理工学院 城市建设学院,湖北 武汉 430223
  • 收稿日期:2017-04-26 出版日期:2017-06-22 发布日期:2018-06-05
  • 作者简介:李鸿博,男,1981年生,博士,高级工程师,主要从事地下工程设计及相关研究工作

Key technologies for design of subsea tunnel of Dalian metro line 5

LI Hong-bo1, JIA Feng2, LI Jing3, LI Shuo-biao1   

  1. 1. CCCC Second Highway Consultants Co., Ltd., Wuhan, Hubei 430056, China; 2. School of Civil and Architectural Engineering Wuhan University, Wuhan, Hubei 430072, China; 3. School of Urban Construction, Wuchang University of Technology, Wuhan, Hubei 430223, China
  • Received:2017-04-26 Online:2017-06-22 Published:2018-06-05

摘要: 大连地铁5号线跨海隧道是我国首条岩溶区的跨海大直径盾构隧道,隧道跨海段长度约2.3 km,采用单洞双线的盾构隧道形式,盾构结构为双层衬砌结构,外径为11.8 m。隧道穿越区域工程地质及水文条件复杂,局部地段岩溶及地下水发育,周边控制性因素较多,设计过程中遇到诸多难点。对地铁跨海隧道单洞双线和单洞单线断面形式进行了综合对比,对岩石破碎、地下水发育条件下的大直径盾构进行选型,通过对比及数值模拟,分析了复杂地质条件下盾构隧道双层衬砌的优势,并结合衬砌形式对防排水方案进行优化,提出了完整的盾构穿越岩溶发育区的处理措施。分析结果表明,岩溶发育区地铁盾构隧道在需要设置排烟风道时采用单洞双线盾构隧道方案更优,采用双层衬砌方案,可以显著提高衬砌结构的耐久性。相关研究成果可供类似工程参考。

关键词: 跨海隧道, 地铁隧道, 盾构法, 岩溶, 衬砌

Abstract: Subsea tunnel of Dalian metro line 5 is the first large-diameter shield subsea tunnel in karst area in China. The tunnel across the sea is about 2.3 km and in form of a single-tube with double-line, using double-lining with a diameter of 11.8 m. The area which the tunnel through has complex geotechnical and hydrogeological conditions, locally karst development and rich groundwater, and many controlling factors; the design has encountered many difficulties. In this research, the sabsea tunnels which have single-tube with double-line have been compared with those have single-tube with single-line. The selection of large-diameter shield has been carried out under the condition of rock fragmentation and rich groundwater. Through the comparison of numerical simulation, the advantages of shield tunnel with double-lining under complicated geological conditions has been analyzed; and the optimizing design for the waterproof and drainage scheme is carried out combined with the lining form. Complete treatment measures are put forward on shield through the karst development area. The analysis results show that the subsea tunnel in karst area which has the exhaust air duct in form of a single-tube with double-lining is a better solution; and using the double-lining can significantly improve the durability of lining. The research results can be used as reference for similar underwater tunnel.

Key words: subsea tunnel, metro tunnel, shield tunnelling, karst, lining

中图分类号: 

  • U 459

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