Study on the time-dependent interaction between surrounding rock and yielding supports in deep soft rock tunnels

被引:18
|
作者
Wu, Kui [1 ]
Song, Junan [1 ]
Zhao, Nannan [1 ]
Shao, Zhushan [1 ,2 ]
机构
[1] Xian Univ Architecture & Technol, Sch Sci, Xian, Peoples R China
[2] Xian Univ Architecture & Technol, Sch Sci, Xian 710055, Peoples R China
基金
中国国家自然科学基金;
关键词
analytical method; engineering application; time-dependent deformation; tunnel; yielding supports; SHOTCRETE LINER; CIRCULAR TUNNEL; STRESS; PREDICTION; BEHAVIOR; ELEMENT; SYSTEMS;
D O I
10.1002/nag.3650
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
As yielding supports can deform without being damaged, the yielding principle has attracted significant attention for tunnelling in squeezing ground compared with the heavy support method. The deformation energy of surrounding rock can be managed using yielding supports that maintain the rock pressure within the bearing capacity of the supports. However, although the yielding principle has been often applied in practical scenarios, a design method for yielding supports has yet not been well developed. This study discusses interaction between the squeezing ground and yielding supports and investigates the influence of the time-dependent behaviour of rock on the yielding supports. The yielding supports can be implemented by the movement of sliding joints of steel arches or by shortening the yielding elements inserted in shotcrete linings. The deforming process of yielding supports can be divided into three stages: elastic a, yielding, and elastic b. A three-stage pressure-displacement relationship of yielding supports is proposed and a method is provided for the calculation of the support stiffnesses of yielding supports in different stages. Furthermore, a unified design approach for the yielding supports is presented and the theoretical model is established after simplifying the asymmetry of problem. The analytical solution for tunnel displacement and support pressure in a tunnel supported by the yielding supports is obtained. The proposed design method for the yielding supports is successfully applied to the Saint Martin La Porte access tunnel, and the mean tunnel deformation in this tunnel is appropriately predicted by the analytical solution. Additionally, a parametric investigation is performed based on the analytical solution, and the effects of yielding path, yielding displacement, support thickness, and installation time of the yielding supports are discussed. Finally, certain highlights of the analytical model of yielding supports in this study are identified, compared with other researches, and recommendations for the design of the yielding supports are provided. The outcome of this research has potential applications in the preliminary design of deep tunnels in squeezing ground.
引用
收藏
页码:566 / 587
页数:22
相关论文
共 50 条
  • [41] Characteristics and Mechanism of Large Deformation of Tunnels in Tertiary Soft Rock: A Case Study
    Liu, Dengxue
    Huang, Shuling
    Ding, Xiuli
    Chi, Jianjun
    Zhang, Yuting
    BUILDINGS, 2023, 13 (09)
  • [42] Mechanisms of large deformation in soft rock tunnels: a case study of Huangjiazhai Tunnel
    Bian, Kang
    Liu, Jian
    Liu, Zhenping
    Liu, Shangge
    Ai, Fei
    Zheng, Xiaoqing
    Ni, Shaohu
    Zhang, Wei
    BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2019, 78 (01) : 431 - 444
  • [43] Surrounding rock deformation control of asymmetrical roadway in deep three-soft coal seam: a case study
    Zhang, Wei
    He, Ziming
    Zhang, Dongsheng
    Qi, Dahong
    Zhang, Weisheng
    JOURNAL OF GEOPHYSICS AND ENGINEERING, 2018, 15 (05) : 1917 - 1928
  • [44] Prediction of Final Displacement of Tunnels in Time-Dependent Rock Mass Based on the Nonequidistant Grey Verhulst Model
    Han, Un Chol
    Choe, Chung Song
    Hong, Kun Ui
    Pak, Chol
    MATHEMATICAL PROBLEMS IN ENGINEERING, 2022, 2022
  • [45] Experimental Study on the Influence of Sidewall Excavation Width and Rock Wall Slope on the Stability of the Surrounding Rock in Hanging Tunnels
    Zhang, Hao
    Luo, Tianyu
    Xiang, Zhao
    Cai, Zhiwei
    Wu, Tongqing
    Zhang, Dong
    Liu, Bing
    Feng, Hu
    BUILDINGS, 2024, 14 (11)
  • [46] Identification of the interaction loads between TBM shield and surrounding rock
    Liu He
    Liu Quan-sheng
    Tang Xu-hai
    Luo Ci-you
    Wan Wen-kai
    Chen Lei
    Pan Yu-cong
    ROCK AND SOIL MECHANICS, 2019, 40 (12) : 4946 - 4954
  • [47] A Solution to the Time-Dependent Stress Distribution in Suborbicular Backfilled Stope Interaction with Creeping Rock
    Yan, Baoxu
    Lai, Xingping
    Jia, Hanwen
    Yilmaz, Erol
    Hou, Chen
    ADVANCES IN CIVIL ENGINEERING, 2021, 2021
  • [48] Time-dependent virtual crack model of rock with application to slope stability
    Yu, Xian-yang
    Xu, Tao
    Heap, Michael J.
    Heng, Zhen
    Ranjith, P. G.
    Su, Boyi
    Wasantha, P. L. P.
    Sun, Guanhua
    ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS, 2023, 154 : 172 - 185
  • [49] A bounding surface viscoplastic damage model for time-dependent rock deformation
    Lu, Gong-Da
    Zhou, Jia-Wen
    Liu, Jian-Feng
    Liu, Lang
    Yang, Xing-Guo
    Tao, Jian
    MECHANICS OF MATERIALS, 2023, 180
  • [50] A Simplified Model for Time-Dependent Deformation of Rock Joints
    Wang, Mingzheng
    Cai, Ming
    ROCK MECHANICS AND ROCK ENGINEERING, 2021, 54 (04) : 1779 - 1797