Face stability analysis of a shield tunnel excavated along inclined strata

被引：31
作者：
Li, Wei
Zhang, Chengping [1 ]
Tu, Shiqin
Chen, Wen
Ma, Mengshuo
机构：
[1] Beijing Jiaotong Univ, Key Lab Urban Underground Engn, Educ Minist, Beijing 100044, Peoples R China
来源：
UNDERGROUND SPACE | 2023年 / 13卷
基金：
中国国家自然科学基金;
关键词：
Tunnel face stability; Inclined strata; Limit analysis; Critical support pressure; 3D failure mechanism; SHALLOW CIRCULAR TUNNELS; UPPER-BOUND SOLUTIONS; DRIVEN; FAILURE; PRESSURE; SOILS; MODEL;
D O I：
10.1016/j.undsp.2023.03.007
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The horizontally layered or even inclined strata are often encountered in practical shield tunneling. The influence of inclined strata on face stability of shield tunnels is not fully investigated by the existing studies. This paper adopts both theoretical analysis and numerical simulation to carry out research on face stability in inclined strata. The spatial discretization technique is adopted to construct a three-dimensional (3D) kinematic failure mechanism considering intersection between inclined soil interface and tunnel face. An analytical solution for critical support pressure is obtained. Besides, the critical support pressure and 3D kinematic mechanism are compared with numerical results to verify accuracy and effectiveness of analytical model. The influences of dip and position of inclined strata on face stability are thoroughly studied. The proposed failure mechanism can serve as a reference for face stability analysis in inclined strata.
引用
收藏
页码：183 / 204
页数：22
相关论文
共 63 条
[1]   Analysis method and design charts for bolt reinforcement of the tunnel face in cohesive-frictional soils [J].
Anagnostou, G. ;
Perazzelli, P. .
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2015, 47 :162-181
[2]   Face stability conditions with earth-pressure-balanced shields [J].
Anagnostou, G ;
Kovari, K .
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 1996, 11 (02) :165-173
[3]   THE FACE STABILITY OF SLURRY-SHIELD-DRIVEN TUNNELS [J].
ANAGNOSTOU, G ;
KOVARI, K .
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 1994, 9 (02) :165-174
[4]   The stability of a tunnel face with a free span and a non-uniform support [J].
Anagnostou, Georgios ;
Perazzelli, Paolo .
GEOTECHNIK, 2013, 36 (01) :40-50
[5]   The contribution of horizontal arching to tunnel face stability [J].
Anagnostou, Georgios .
GEOTECHNIK, 2012, 35 (01) :34-44
[6]   Face failure in homogeneous and stratified soft ground: Theoretical and experimental approaches on 1g EPBS reduced scale model [J].
Berthoz, Nicolas ;
Branque, Denis ;
Subrin, Didier ;
Wong, Henry ;
Humbert, Emmanuel .
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2012, 30 :25-37
[7]  
Broere W., 2001, Tunnel face stability & new CPT applications
[8]   SHALLOW TUNNELS IN COHESIONLESS SOIL - STABILITY OF TUNNEL FACE [J].
CHAMBON, P ;
CORTE, JF .
JOURNAL OF GEOTECHNICAL ENGINEERING-ASCE, 1994, 120 (07) :1148-1165
[9]   An improved 3D wedge-prism model for the face stability analysis of the shield tunnel in cohesionless soils [J].
Chen, R. P. ;
Tang, L. J. ;
Yin, X. S. ;
Chen, Y. M. ;
Bian, X. C. .
ACTA GEOTECHNICA, 2015, 10 (05) :683-692
[10]   Face stability analysis of shallow shield tunnels in dry sandy ground using the discrete element method [J].
Chen, R. P. ;
Tang, L. J. ;
Ling, D. S. ;
Chen, Y. M. .
COMPUTERS AND GEOTECHNICS, 2011, 38 (02) :187-195
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