Investigation of Reasonable Reserved Deformation of Deep-Buried Tunnel Excavation Based on Large Deformation Characteristics in Soft Rock

被引：0
|
作者：
Yang, Zhen [1 ]
Liu, Peisi [2 ]
Wang, Bo [3 ]
Zhao, Yiqi [3 ]
Zhang, Heng [3 ]
机构：
[1] Gansu Tianlong Railway Co Ltd, Lanzhou 730020, Peoples R China
[2] China Railway Eryuan Engn Grp Co Ltd, Chengdu 610031, Peoples R China
[3] Southwest Jiaotong Univ, Key Lab Transportat Tunnel Engn, Minist Educ, Chengdu 610031, Peoples R China
来源：
BUILDINGS | 2024年 / 14卷 / 10期
基金：
中国国家自然科学基金;
关键词：
tunnel; reserved deformation; high in situ stress; large deformation; influencing factors; MECHANICAL-BEHAVIOR; SURROUNDING ROCK; STRESS; FAILURE;
D O I：
10.3390/buildings14103159
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This study studies the deformation characteristics of the diversion tunnel of Jinping II Hydropower Station in order to guarantee the safety of the excavation of a large-section soft rock tunnel with a depth of 1000 m and increased ground stress. Using field data, theoretical computations, and numerical modeling, the proper reserved deformation of a deep soft rock tunnel is investigated, taking into consideration the size, in situ stress, and grade of the surrounding rock. The study reveals that (1) The diversion tunnel's incursion limit, which is typically between 20 and 60 cm, is serious; (2) The surrounding rock level > geostress > tunnel size are the influencing parameters of reserved deformation that remain unchanged while using the numerical simulation method, which is more accurate in simulating field conditions; (3) The west end of the Jinping diversion tunnel has a 30-60 cm reserved deformation range for the chlorite schist tunnel. The deformation law of a large-section, 1000 m-deep soft rock tunnel is better understood, and it also offers important references for high-stress soft rock tunnel engineering design, construction, and safety management.
引用
收藏
页数：20
相关论文
共 50 条
  • [41] Analysis of Deformation Characteristics of Layered Rock Tunnel Excavation Based on Statistical Mechanics of Rock Masses
    Wu, Faquan
    Wan, Weixin
    Tian, Yun
    Yang, Ying
    Yang, Bing
    ASCE-ASME JOURNAL OF RISK AND UNCERTAINTY IN ENGINEERING SYSTEMS PART A-CIVIL ENGINEERING, 2025, 11 (01):
  • [42] Dynamic stress adjustment and rock damage during blasting excavation in a deep-buried circular tunnel
    Yang, J. H.
    Jiang, Q. H.
    Zhang, Q. B.
    Zhao, J.
    TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2018, 71 : 591 - 604
  • [43] Study on Deformation of Surrounding Rock for Deep-Buried Tunnels in Rock Mass of Interbedded Sandstone and Slate
    Zhao Da-zhou
    Sun Kai
    2013 FIFTH INTERNATIONAL CONFERENCE ON MEASURING TECHNOLOGY AND MECHATRONICS AUTOMATION (ICMTMA 2013), 2013, : 1052 - 1055
  • [44] A New Blasting Permeability Enhancement Scheme For Deep-Buried Soft Coal Mining Face Based on Borehole Deformation Characteristics
    Xuan, Dequan
    Zhang, Jianhua
    Huang, Gang
    Li, Peng
    Zhang, Zhifeng
    FRONTIERS IN EARTH SCIENCE, 2022, 10
  • [45] Study on Deformation Control of Large Deformation Tunnel in Soft Rock across Faults
    Tao, Zhigang
    Lin, Weijun
    Li, Yong
    Liu, Kuiming
    INTERNATIONAL JOURNAL OF GEOMECHANICS, 2024, 24 (06)
  • [46] Numerical Simulation of Large Compression Deformation Disaster and Supporting Behavior of Deep Buried Soft Rock Tunnel with High In Situ Stress Based on CDEM
    Tang, Hao
    Ji, Xiang
    Zhang, Hongyi
    Li, Tianbin
    ADVANCES IN CIVIL ENGINEERING, 2022, 2022
  • [47] Deformation mechanism and excavation process of large span intersection within deep soft rock roadway
    LI Guofeng
    International Journal of Mining Science and Technology, 2010, 20 (01) : 28 - 34
  • [48] Deformation mechanism and excavation process of large span intersection within deep soft rock roadway
    LI G.
    HE M.
    ZHANG G.
    TAO Z.
    Mining Science and Technology, 2010, 20 (01): : 28 - 34
  • [49] Deformation mechanism and excavation process of large span intersection within deep soft rock roadway
    LI Guofeng HE Manchao ZHANG Guofeng TAO Zhigang Institute of Geotechnical Engineering China University of Mining Technology Beijing China
    MiningScienceandTechnology, 2010, 20 (01) : 28 - 34
  • [50] Large deformation of soft rock and NPR anchor cable excavation compensation support technology in Changning tunnel
    Tao Z.
    Zhang B.
    Yang K.
    Yang Y.
    Guo P.
    Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining and Technology, 2023, 52 (04): : 660 - 671
12345