scholarly journals Rotational failure mechanisms for the face stability analysis of tunnels driven by a pressurized shield

2010 ◽  
Vol 35 (12) ◽  
pp. 1363-1388 ◽  
Author(s):  
Guilhem Mollon ◽  
Daniel Dias ◽  
Abdul-Hamid Soubra
Keyword(s):  
Stability Analysis ◽  
Failure Mechanisms ◽  
Face Stability ◽  
The Face ◽  
Rotational Failure

An improved 3D wedge-prism model for the face stability analysis of the shield tunnel in cohesionless soils

2014 ◽  
Vol 10 (5) ◽  
pp. 683-692 ◽  
Author(s):  
R. P. Chen ◽  
L. J. Tang ◽  
X. S. Yin ◽  
Y. M. Chen ◽  
X. C. Bian
Keyword(s):  
Stability Analysis ◽  
Shield Tunnel ◽  
Cohesionless Soils ◽  
Face Stability ◽  
The Face ◽  
Wedge Prism ◽  
Prism Model

scholarly journals Analysis of Face Stability during Excavation of Double-O-Tube Shield Tunnel

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Yuyou Yang ◽  
Qinghong Zhou ◽  
Hongan Li ◽  
Xuegang Huang ◽  
Xiaoming Tu
Keyword(s):  
Stability Analysis ◽  
Failure Mechanism ◽  
Three Dimensional ◽  
Soil Mass ◽  
Shield Tunnel ◽  
Face Stability ◽  
Supporting Pressure ◽  
The Face ◽  
Collapse Failure ◽  
Kinematic Theorem

This paper focuses on the face stability analysis of Double-O-Tube shield tunnel. This kind of analysis is significant to ensure the safety of workers and reduce the influence on the surrounding environment. The key point of the stability analysis is to determine the supporting pressure applied to the face by the shield. A collapse failure will occur when the supporting pressure is not sufficient to prevent the movement of the soil mass towards the tunnel. A three-dimensional collapse failure mechanism was presented in this paper. Based on the mechanism of a single circular shield tunnel, the mechanism of Double-O-Tube shield tunnel was established by using the fact that both of the mechanisms are symmetrical. Then by means of the kinematic theorem of limit analysis, the numerical results were obtained, and a design chart was provided. The finite difference software FLAC3D was applied to investigate the face failure mechanism of DOT shield tunnel established in this paper; the critical supporting pressures of the collapse failure mechanism in different strata (sand and silt) were calculated. Through comparative analysis, the theoretical values were very close to the numerical values. This shows that the face failure mechanism of DOT shield tunnel is reasonable, and it can be applied to the sand and silt strata.

Three-dimensional face stability analysis of shallow tunnels using numerical limit analysis and material point method

2021 ◽  
Vol 112 ◽  
pp. 103904
Author(s):  
Fabricio Fernández ◽  
Jhonatan E.G. Rojas ◽  
Eurípedes A. Vargas ◽  
Raquel Q. Velloso ◽  
Daniel Dias
Keyword(s):  
Stability Analysis ◽  
Limit Analysis ◽  
Three Dimensional ◽  
Material Point Method ◽  
Material Point ◽  
Point Method ◽  
Face Stability ◽  
Shallow Tunnels ◽  
Dimensional Face

Face Stability Analysis of Slurry Shield Tunnels in Rock-Soil Interface Mixed Ground

2021 ◽  
Author(s):  
Ping Lu ◽  
Dajun Yuan ◽  
Jian Chen ◽  
Dalong Jin ◽  
Jun Wu ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Face Stability ◽  
Mixed Ground ◽  
Slurry Shield ◽  
Soil Interface
Sign in / Sign up

Export Citation Format

Share Document