IDEAS home Printed from https://ideas.repec.org/a/gam/jmathe/v11y2023i14p3125-d1194604.html
   My bibliography  Save this article

Study on the Influence of an Under-Crossing Parallel Double-Line Shield Tunnel on the Existing Tunnel Structure

Author

Listed:
  • Linhai Zeng

    (School of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
    Guangdong Zhonggong Architectural Design Institute Co., Ltd., Guangzhou 510700, China)

  • Daobing Zhang

    (School of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Changjiang Lian

    (Guangdong Zhonggong Architectural Design Institute Co., Ltd., Guangzhou 510700, China)

  • Jiahua Zhang

    (Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal Mines, Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal Mines, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Huadong Yin

    (School of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

Abstract

Extra care should be taken when new tunnels pass through an existing tunnel. If it is not handled properly, this will affect the operation safety of the existing line, and bring security risks to the train’s operation. In order to study the impact of an under-crossing parallel double-line shield tunnel on the existing shield tunnel structure, the influence of tunnel construction on the deformation of overlying strata was analyzed, and the formula for estimating the formation settlement at depth Z below the surface, caused by the excavation of a double-tunnel parallel tunnel, was deduced. Then, a series of three-dimensional finite element numerical simulations were carried out. We analyzed and systematically studied the adverse effects of the tunnel structure of Guangzhou subway Line 5, caused by the tunneling of subway Line 18, evaluated its structure and operational safety, and provided suggestions for site construction. This research demonstrates the following conclusions. (1) The tunnel structures of subway Line 5 and Line 18 are mainly in the strongly weathered argillaceous siltstone stratum, and lightly weathered argillaceous siltstone stratum, respectively, and the stratum where the Line 18 tunnel is located is relatively safe. (2) According to three-dimensional finite element numerical simulation analysis, during the shield-tunneling process of subway Line 18, the maximum X horizontal displacement, the maximum Y horizontal displacement, and the maximum Z vertical displacement of the tunnel structure in subway Line 5 are 1.09, 3.50, and 4.55 mm, respectively. It is considered that the impact of the shield-tunnel penetration of subway Line 18 on the tunnel structure of subway Line 5 is relatively controllable, and does not affect the structure and operational safety. (3) It is suggested that settlement monitoring should be strengthened within the range of 12 m (about 1.5 tunnel diameter D). before and after the excavation axis of the underpass tunnel, and it is necessary to carry out local reinforcement treatment, to prevent adverse effects on the operation of the existing tunnel.

Suggested Citation

  • Linhai Zeng & Daobing Zhang & Changjiang Lian & Jiahua Zhang & Huadong Yin, 2023. "Study on the Influence of an Under-Crossing Parallel Double-Line Shield Tunnel on the Existing Tunnel Structure," Mathematics, MDPI, vol. 11(14), pages 1-19, July.
    • Handle: RePEc:gam:jmathe:v:11:y:2023:i:14:p:3125-:d:1194604
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2227-7390/11/14/3125/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2227-7390/11/14/3125/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Jiaxin Liang & Xiaowu Tang & Tianqi Wang & Weikang Lin & Jing Yan & Chunqing Fu, 2022. "Analysis for Ground Deformation Induced by Undercrossed Shield Tunnels at a Small Proximity Based on Equivalent Layer Method," Sustainability, MDPI, vol. 14(16), pages 1-18, August.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Ting Ren & Hailong Zhang & Yuancheng Guo & Yang Tang & Qinglin Li & Seisuke Okubo, 2022. "Calculation Method for Investigating the Behavior of Ground Surface Settlement of Underpass Buildings in TBM Double-Line Tunnels," Sustainability, MDPI, vol. 14(20), pages 1-14, October.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jmathe:v:11:y:2023:i:14:p:3125-:d:1194604. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.