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A proposed solution to the ground fissure encountered in urban metro construction in Xi'an, China

机译：西安城市地铁建设中遇到的地面裂缝的建议解决方案

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摘要

The city of Xi'an, Shaanxi, China, was founded over 3000 years ago. However, the city faces urban geological hazards with 14 parallel ground fissures covering a wide area of the municipal area. The ground fissures are not only hazardous to surface buildings, structures and underground pipes but also pose a major safety risk to the 15 metro lines under construction or under planning. Such challenges are unprecedented in the history of metro construction around the world. Research indicates that the ground fissures in Xi'an produce three-dimensional motion, among which the vertical displacement has the strongest effects on metro engineering. The results of large-scale physical model tests suggest that damages such as cracks in tunnel lining, failures of waterproofing and deformation of metro rail can be caused by the activities of ground fissures. To mitigate such risks, this paper proposes a series of engineering countermeasures such as enlargement of tunnel sections to maintain clearance, use of segmented tunnels, enhancement of tunnel lining, and use of multiple waterproofing measures. These countermeasures have been proven to be effective and reliable, based on the successful operation of the Xi'an Metro for the past 3 years. (C) 2016 Elsevier Ltd. All rights reserved.
机译：中国陕西西安市成立于3000年前。但是，这座城市面临着14条平行的地裂缝，覆盖了整个市政区域，面临着城市地质灾害。地面裂缝不仅危害地面建筑物，结构和地下管道，而且对正在建设或规划中的15条地铁线构成重大安全风险。在全球地铁建设的历史上，这样的挑战是前所未有的。研究表明，西安的地裂缝产生三维运动，其中垂直位移对地铁工程的影响最大。大规模物理模型测试的结果表明，地裂缝的活动可能会造成诸如隧道衬砌裂缝，防水失效和地铁轨道变形等损坏。为减轻此类风险，本文提出了一系列工程对策，例如扩大隧道截面以保持净空，使用分段隧道，增强隧道衬砌以及使用多种防水措施。在过去三年来西安地铁的成功运行基础上，这些对策已被证明是有效和可靠的。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Tunnelling and underground space technology》 |2017年第1期|12-25|共14页
  • 作者

    Peng Jian-bing; Huang Qiang-bing; Hu Zhi-ping; Wang Ming-xiao; Li Tan; Men Yu-ming; Fan Wen;

  • 作者单位

    Changan Univ, Sch Geol Engn & Geomat, Xian 710054, Peoples R China|Minist Educ, Key Lab Western China Mineral Resource & Geol Eng, Xian 710054, Peoples R China;

    Changan Univ, Sch Geol Engn & Geomat, Xian 710054, Peoples R China|Minist Educ, Key Lab Western China Mineral Resource & Geol Eng, Xian 710054, Peoples R China;

    Minist Educ, Key Lab Western China Mineral Resource & Geol Eng, Xian 710054, Peoples R China;

    Xian Underground Railway Co Ltd, Xian 710018, Peoples R China;

    China Railway First Survey & Design Inst Grp Co L, Xian 710043, Peoples R China;

    Changan Univ, Sch Geol Engn & Geomat, Xian 710054, Peoples R China|Minist Educ, Key Lab Western China Mineral Resource & Geol Eng, Xian 710054, Peoples R China;

    Changan Univ, Sch Geol Engn & Geomat, Xian 710054, Peoples R China|Minist Educ, Key Lab Western China Mineral Resource & Geol Eng, Xian 710054, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Xi'an Metro; Ground fissure; Tunnel; Model test; Structural measures; Waterproofing;

    机译：西安地铁地裂缝隧道模型试验结构措施防水;

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