Stability of Tunnel Face Reinforced by Bolts under Seepage Flow Conditions

2021 ◽  
Author(s):  
Jing Liu ◽  
Lili Liu
Keyword(s):  
Seepage Flow ◽  
Flow Conditions ◽  
Tunnel Face

Tunnel face stability under seepage flow conditions

2014 ◽  
Vol 43 ◽  
pp. 459-469 ◽  
Author(s):  
P. Perazzelli ◽  
T. Leone ◽  
G. Anagnostou
Keyword(s):  
Seepage Flow ◽  
Flow Conditions ◽  
Tunnel Face ◽  
Face Stability ◽  
Tunnel Face Stability

scholarly journals Stability under Seepage Flow Conditions of a Tunnel Face Reinforced by Bolts

2017 ◽  
Vol 191 ◽  
pp. 215-224 ◽  
Author(s):  
P. Perazzelli ◽  
G. Cimbali ◽  
G. Anagnostou
Keyword(s):  
Seepage Flow ◽  
Flow Conditions ◽  
Tunnel Face

Large-scale laboratory tests on artificial ground freezing under seepage-flow conditions

Géotechnique ◽  
2012 ◽  
Vol 62 (3) ◽  
pp. 227-241 ◽  
Author(s):  
E. PIMENTEL ◽  
A. SRES ◽  
G. ANAGNOSTOU
Keyword(s):  
Laboratory Tests ◽  
Large Scale ◽  
Seepage Flow ◽  
Flow Conditions ◽  
Ground Freezing ◽  
Artificial Ground Freezing

Development and Validation of Enthalpy-Porosity Method for Artificial Ground Freezing Under Seepage Conditions

2018 ◽  
Author(s):  
Mahmoud A. Alzoubi ◽  
Agus P. Sasmito
Keyword(s):  
Seepage Flow ◽  
High Water ◽  
Flow Conditions ◽  
Ground Structure ◽  
Reliable Prediction ◽  
Closure Time ◽  
Ground Freezing ◽  
Artificial Ground Freezing ◽  
Frozen Wall ◽  
Development And Validation

Groundwater flow has an undesirable effect on ice growth in artificial ground freezing (AGF) process: high water flow could hinder the hydraulic sealing between two freeze pipes. Therefore, a reliable prediction of the multiphysics ground behavior under seepage flow conditions is compulsory. This paper describes a mathematical model that considers conservation of mass, momentum, and energy. The model has been derived, validated, and implemented to simulate the multiphase heat transfer between freeze pipes and surrounded porous ground structure with and without the presence of groundwater seepage. The paper discusses, also, the influence of the coolant’s temperature, the spacing between two freeze pipes, and the seepage temperature on time needed to create a closed, frozen wall. The results indicate that spacing between two pipes and seepage velocity have the highest impact on the closure time and the frozen body width.

Spatially varied flow over rockfill embankments

1993 ◽  
Vol 20 (5) ◽  
pp. 820-827 ◽  
Author(s):  
J. A. Kells
Keyword(s):  
Physical Model ◽  
Flow Regime ◽  
Control Point ◽  
Flow Analysis ◽  
Free Surface Flow ◽  
Seepage Flow ◽  
Surface Flow ◽  
Flow Conditions ◽  
Seepage Analysis ◽  
The One

A procedure for determining the flow conditions through and over a simple, rockfill embankment having a horizontal top surface is presented. In this situation, the free surface flow regime can be characterized as spatially varied and the seepage flow regime as non-Darcian. Included in the paper are a review of spatially varied flow theory and analysis, a brief description of the numerical method used to conduct the non-Darcy seepage analysis, a few comments with respect to the determination of the flow properties of the model rockfill, and a discussion of the application of the analysis procedure to a model rockfill embankment. Two flow conditions were tested. The one flow condition was for partial overtopping of the embankment, while the other involved complete overtopping. The spatially varied flow analysis was carried out using a spreadsheet, and it included the incorportion of Hinds' method for control point location. A modified version of a Darcian finite element seepage program was used for the seepage analysis. The computed results are compared with those obtained from a physical model. As shown in the paper, the results are generally supportive of the proposed modeling procedure. Key words: control point, non-Darcy seepage, numerical model, physical model, porous media, rockfill, spatially varied flow.

Stability Analysis of Tunnel Face in Nonlinear Soil under Seepage Flow

2019 ◽  
Vol 23 (10) ◽  
pp. 4553-4563 ◽  
Author(s):  
Xiao-Li Yang ◽  
Jun-Hao Zhong
Keyword(s):  
Stability Analysis ◽  
Seepage Flow ◽  
Tunnel Face
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