scholarly journals Modified criterion for prediction of tunnel deformation in non-squeezing ground conditions

2018 ◽  
Vol 27 (1) ◽  
pp. 11-24 ◽  
Author(s):  
Ako Daraei ◽  
Shokrollah Zare
Keyword(s):  
Squeezing Ground ◽  
Ground Conditions

scholarly journals Tunnel Squeezing Deformation Control and the Use of Yielding Elements in Shotcrete Linings: A Review

Materials ◽  
2022 ◽  
Vol 15 (1) ◽  
pp. 391
Author(s):  
Xiaomeng Zheng ◽  
Kui Wu ◽  
Zhushan Shao ◽  
Bo Yuan ◽  
Nannan Zhao
Keyword(s):  
High Resistance ◽  
Review Paper ◽  
State Of The Art ◽  
Squeezing Ground ◽  
Deformation Control ◽  
Development History ◽  
Ground Conditions ◽  
Supporting Effect ◽  
Mechanical Performances ◽  
Shotcrete Lining

Shotcrete lining shows high resistance but extremely low deformability. The utilization of yielding elements in shotcrete lining, which leads to the so-called ductile lining, provides a good solution to cope with tunnel squeezing deformations. Although ductile lining exhibits great advantages regarding tunnel squeezing deformation control, little information has been comprehensively and systematically available for its mechanism and design. This is a review paper for the purpose of summarizing the development history and discussing the state of the art of ductile lining. It begins by providing a brief introduction of ductile lining and an explanation of the importance of studying this issue. A following summary of supporting mechanism and benefits of ductile lining used in tunnels excavated in squeezing ground conditions is provided. Then, it summarizes the four main types of yielding elements applied in shotcrete lining and introduces their basic structures and mechanical performances. The influences of parameters of yielding elements on the supporting effect are discussed and the design methods for ductile lining are reviewed as well. Furthermore, recommendations for further research in ductile lining are proposed. Finally, a brief summary is presented.

Geotechnical risk management approach for TBM tunnelling in squeezing ground conditions

2016 ◽  
Vol 57 ◽  
pp. 201-210 ◽  
Author(s):  
Nicholas Swannell ◽  
Michael Palmer ◽  
Giovanni Barla ◽  
Marco Barla
Keyword(s):  
Risk Management ◽  
Management Approach ◽  
Squeezing Ground ◽  
Ground Conditions ◽  
Geotechnical Risk

scholarly journals Investigating High-Strength Expanded Polystyrene (HS-EPS) as yielding support elements for tunnelling in squeezing ground conditions

2021 ◽  
Vol 118 ◽  
pp. 104186
Author(s):  
Manuel Entfellner ◽  
Pooya Hamdi ◽  
Xiaoyue Wang ◽  
Helmut Wannenmacher ◽  
Florian Amann
Keyword(s):  
High Strength ◽  
Expanded Polystyrene ◽  
Squeezing Ground ◽  
Ground Conditions ◽  
Yielding Support
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