Discussion on Structure Design of Shaft Lining Built in Porous Rocky Aquifer with High Water Pressure

2012 ◽  
Vol 446-449 ◽  
pp. 2196-2201
Author(s):  
Xiao Min Zhou ◽  
Bing Deng ◽  
Cheng Xuan Ma
Keyword(s):  
Water Pressure ◽  
High Water ◽  
Structure Design ◽  
Surrounding Rock ◽  
Porous Rock ◽  
Traditional Design ◽  
Universal Feature ◽  
Pressure Water ◽  
Shaft Lining ◽  
High Water Pressure

Firstly based on the practical problem of lining thickness built in porous rock aquifer with high water pressure, this paper introduce the mechanical and stable seepage model, and design formula of shaft lining named Baoshen; Secondly, the character of load and parameters in the “Baoshen” formula are studied, compared with the “Lame” formula and the original heavy earth field , which shows good universal feature to cover several traditional design methods. Thirdly, the principals of interaction among high pressure water, lining and surrounding rock are revealed by figure and discuss on inequality inequation; With a newly application example, the practical usage are introduced and newly viewpoints are opened to designers with material promotion, arrangement of re-bar or bolt, structure optimum etc.

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.

Discussion on Structure Design of Shaft Lining Built in Porous Rocky Aquifer with High Water Pressure

2012 ◽  
Vol 446-449 ◽  
pp. 2196-2201
Author(s):  
Xiao Min Zhou ◽  
Bing Deng ◽  
Cheng Xuan Ma
Keyword(s):  
Water Pressure ◽  
High Water ◽  
Structure Design ◽  
Shaft Lining ◽  
High Water Pressure

Research on the model test system of shaft lining interacting with enclosure rock under deep and high water pressure

2011 ◽  
Author(s):  
Zhou Xiao-min ◽  
Ji Hong-guang ◽  
Deng Bing ◽  
Zhou Guo-qing ◽  
Liang Heng-hang
Keyword(s):  
Model Test ◽  
Water Pressure ◽  
High Water ◽  
Test System ◽  
Shaft Lining ◽  
High Water Pressure

Development and Experimental Research on a Formula of Water Inrush Coefficient

2013 ◽  
Vol 448-453 ◽  
pp. 3901-3907
Author(s):  
Gan Tian
Keyword(s):  
High Pressure ◽  
Coal Seam ◽  
Water Resistance ◽  
Water Pressure ◽  
Water Inrush ◽  
High Water ◽  
Residual Pressure ◽  
Simulation Experiments ◽  
Pressure Water ◽  
High Water Pressure

Based on analysis of water inrush coefficients developed and applied in deep coal mining with high water pressure, the author proposes that there are some defects of water inrush coefficients in calculation and application. By simulation experiments on the water resistance properties of the aquiclude in a coal seam floor, the author arrived at the distribution and digital characteristics of residual pressure in the course of high-pressure water rising in the water-resisting floor. The formula for a water inrush coefficient has been further revised.

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

High Water-Pressure Events in Moulins, Storglaciären, Sweden

1983 ◽  
Vol 65 (1-2) ◽  
pp. 19-25 ◽  
Author(s):  
Per Holmlund ◽  
Roger Leb. Hooke
Keyword(s):  
Water Pressure ◽  
High Water ◽  
High Water Pressure

scholarly journals Mechanism of Fracturing in Shaft Lining Caused by High-Pressure Pore Water in Stable Rock Strata

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Jihuan Han ◽  
Jiuqun Zou ◽  
Weihao Yang ◽  
Chenchen Hu
Keyword(s):  
High Pressure ◽  
Rock Mass ◽  
Pore Water ◽  
Expansion Coefficient ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Surrounding Rock ◽  
Shaft Lining ◽  
Rock Strata ◽  
Expansion Effect

With the increase in shaft depth, the problem of cracks and leakage in single-layer concrete lining in porous water-rich stable rock strata has become increasingly clear, in which case the mechanism of fracturing in shaft lining remains unclear. Considering that the increase in pore water pressure can cause rock mass expansion, this paper presents the concept of hydraulic expansion coefficient. First, a cubic model containing spherical pores is established for studying hydraulic expansion, and the ANSYS numerical simulation, a finite element numerical method, was used for calculating the volume change of the model under the pore water pressure. By means of the multivariate nonlinear regression method, the regression equation of the hydraulic expansion coefficient is obtained. Second, based on the hydraulic expansion effect on the rock mass, an interaction model of pore water pressure–porous rock–shaft lining is established and further solved. Consequently, the mechanism of fracturing in shaft lining caused by high-pressure pore water is revealed. The results show that the hydraulic expansion effect on the surrounding rock increases with its porosity and decreases with its elastic modulus and Poisson’s ratio; the surrounding rock expansion caused by the change in pore water pressure can result in the outer edge of the lining peeling off from the surrounding rock and tensile fracturing at the inner edge. Therefore, the results have a considerable guiding significance for designing shaft lining through porous water-rich rock strata.

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

scholarly journals Impact of high water pressure on oil generation and maturation in Kimmeridge Clay and Monterey source rocks: Implications for petroleum retention and gas generation in shale gas systems

2016 ◽  
Vol 73 ◽  
pp. 72-85 ◽  
Author(s):  
Clement N. Uguna ◽  
Andrew D. Carr ◽  
Colin E. Snape ◽  
Will Meredith ◽  
Iain C. Scotchman ◽  
...  
Keyword(s):  
Shale Gas ◽  
Water Pressure ◽  
High Water ◽  
Source Rocks ◽  
Gas Generation ◽  
Oil Generation ◽  
High Water Pressure
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