scholarly journals Model Test Research on the Mechanical Characteristics of Tunnel Lining Structures under Local High Water Pressure in Concealed Karsts

2021 ◽  
Vol 861 (2) ◽  
pp. 022010
Author(s):  
Meihai Jin ◽  
Xinrong Liu ◽  
Zuliang Zhong
Keyword(s):  
Model Test ◽  
Mechanical Characteristics ◽  
Water Pressure ◽  
High Water ◽  
Tunnel Lining ◽  
High Water Pressure

scholarly journals Analysis on Water Inrush Process of Tunnel with Large Buried Depth and High Water Pressure

Processes ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 134 ◽  
Author(s):  
Weimin Yang ◽  
Zhongdong Fang ◽  
Hao Wang ◽  
Liping Li ◽  
Shaoshuai Shi ◽  
...  
Keyword(s):  
High Pressure ◽  
Model Test ◽  
Water Pressure ◽  
Water Inrush ◽  
High Water ◽  
Surrounding Rock ◽  
Karst Cave ◽  
Tunnel Excavation ◽  
Pressure Water ◽  
High Water Pressure

In order to explore the catastrophic evolution process for karst cave water inrush in large buried depth and high water pressure tunnels, a model test system was developed, and a similar fluid–solid coupled material was found. A model of the catastrophic evolution of water inrush was developed based on the Xiema Tunnel, and the experimental section was simulated using the finite element method. By analyzing the interaction between groundwater and the surrounding rocks during tunnel excavation, the law of occurrence of water inrush disaster was summarized. The water inrush process of a karst cave containing high-pressure water was divided into three stages: the production of a water flowing fracture, the expansion of the water flowing fracture, and the connection of the water flowing fracture. The main cause of water inrush in karst caves is the penetration and weakening of high-pressure water on the surrounding rock. This effect is becoming more and more obvious as tunnel excavation progresses. The numerical simulation results showed that the outburst prevention thickness of the surrounding rock is 4.5 m, and that of the model test result is 5 m. Thus, the results of the two methods are relatively close to each other. This work is important for studying the impact of groundwater on underground engineering, and it is of great significance to avoid water inrush in tunnels.

Model test of the tunnel subjected to high water pressure in Jinping Second Cascade Hydropower Station, China

2011 ◽  
Vol 54 (S1) ◽  
pp. 192-198 ◽  
Author(s):  
JianXiu Wang ◽  
Bo Feng ◽  
LiSheng Hu ◽  
PuZhuo Tian ◽  
DongChang Sui ◽  
...  
Keyword(s):  
Model Test ◽  
Water Pressure ◽  
High Water ◽  
Hydropower Station ◽  
High Water Pressure

scholarly journals A study on the design of shield tunnel lining in high water pressure condition

2015 ◽  
Vol 17 (3) ◽  
pp. 227-236 ◽  
Author(s):  
Young-Joon Lee ◽  
Ki-Lim Kim ◽  
Keon-Woong Jeong ◽  
Eui-Joon Hong ◽  
Seon-Hong Kim ◽  
...  
Keyword(s):  
Water Pressure ◽  
High Water ◽  
Tunnel Lining ◽  
Shield Tunnel ◽  
Pressure Condition ◽  
High Water Pressure

scholarly journals Structural modifications of lanthanum silicate oxyapatite exposed to high water pressure

2017 ◽  
Vol 37 (5) ◽  
pp. 2149-2158 ◽  
Author(s):  
Aénor Pons ◽  
Emilie Béchade ◽  
Jenny Jouin ◽  
Maggy Colas ◽  
Pierre-Marie Geffroy ◽  
...  
Keyword(s):  
Water Pressure ◽  
High Water ◽  
Structural Modifications ◽  
Lanthanum Silicate ◽  
High Water Pressure

scholarly journals Study on Water Sealing Mechanism of Earth Pressure Balanced Shield Subject to High Water Pressure.

1996 ◽  
pp. 189-198
Author(s):  
Akimasa Waku ◽  
Hideharu Miyazawa ◽  
Hiroshi Yoshino ◽  
Syunsuke Sakurai
Keyword(s):  
Water Pressure ◽  
Earth Pressure ◽  
High Water ◽  
Sealing Mechanism ◽  
High Water Pressure
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