Construction Technology and Application of Plastic Concrete Cutoff Wall in Water Conservancy and Hydropower Projects

2021 ◽  
Keyword(s):  
Construction Technology ◽  
Cutoff Wall ◽  
Plastic Concrete ◽  
Water Conservancy

Parameters affecting the thickness of bentonite cake in cutoff wall construction: case study and physical modeling

2005 ◽  
Vol 42 (2) ◽  
pp. 646-654 ◽  
Author(s):  
Abbas Soroush ◽  
Mohammad Soroush
Keyword(s):  
Physical Model ◽  
Physical Model Test ◽  
Test Results ◽  
Cutoff Wall ◽  
Bentonite Slurry ◽  
Cutoff Walls ◽  
Plastic Concrete ◽  
Wall Construction ◽  
Using Data

Concrete cutoff walls are usually constructed using a panel-by-panel technique in which primary panels are constructed with space between them and then secondary panels are constructed and inserted in the spaces. A small thickness of residual bentonite cake from the slurry used during excavation usually remains in the construction joints between adjacent primary and secondary panels. The thickness of such bentonite-filled joints should be minimized in terms of the performance of the cutoff wall in controlling seepage. This research experimentally evaluated the effects of a number of design and construction parameters on the thickness of the bentonite cake using data from a case study (the cutoff wall of Karkheh Dam). A physical model test was developed and a number of tests were conducted. The test results showed that parameters such as age of the primary panels, cement content of the slurry, quantity of additives in the slurry, and circulation versus noncirculation of the slurry are responsible for the thickness of the bentonite cake. The results are presented and analyzed.Key words: cutoff wall, plastic concrete, bentonite slurry, bentonite cake, physical model.

The Seepage Behavior of Composite Geo-Membrane & Cutoff Wall Applied in Three Gorges Project

2011 ◽  
Vol 186 ◽  
pp. 146-150
Author(s):  
Kai Chang Sun
Keyword(s):  
Composite Materials ◽  
Primary Objective ◽  
Three Gorges ◽  
Test Results ◽  
Cutoff Wall ◽  
Working Mechanism ◽  
Second Stage ◽  
Plastic Concrete ◽  
The Difference ◽  
Mechanical Characters

The primary objective of this paper is to study the seepage behavior of the cutoff wall and the working mechanism of the composite geo-membrane applied in the second stage cofferdam of the Three Gorges Dam. The mixture proportion of the plastic concrete applied in the cutoff wall is researched and a recommended proportion is put forward. The difference between the composite geo-membrane and single geo-membrane concerning mechanical strength and permeability is detected and reasons which lead to the difference are found. The test results indicate that the mechanical characters of the composite geo-membrane have been improved remarkably. It is demonstrated that the deformation ratio plays an important role in terms of the permeability by bursting test. The behavior of the composite geo-membrane and the effect of the composite materials in different work-stage are studied and the influence of the elasticity of the composite materials on the practical application of the composite geo-membrane is analyzed. It is found that the strength is not just the superposition of the strength of composite materials and membrane.

scholarly journals Elementary discussion on construction technology of foundation treatment for water conservancy and hydropower projects

2018 ◽  
Vol 2 (3) ◽  
Author(s):  
Linjun Shao ◽  
Qingfeng Wang ◽  
Guiyun Qin ◽  
Rongqiang Liu
Keyword(s):  
Human Development ◽  
Flood Control ◽  
Human Life ◽  
Electric Energy ◽  
Construction Technology ◽  
Hydropower Project ◽  
Foundation Treatment ◽  
Construction Techniques ◽  
Water Conservancy

Human life is inseparable from water resources, and human development is inseparable from electric energy. Water conservancy and hydropower project plays a very important role in all stages of human development, whether it is power generation, irrigation, flood control or drainage, which can not be separated from the construction of water and hydropower projects. This paper briefly discusses and analyzes the basic treatment construction techniques for water conservancy and hydropower projects, giving full play to the key role of water conservancy and hydropower projects in the development of national economy.

scholarly journals An Analysis on the Construction Technology and Management of Water Resources and Hydropower Projects

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Yong Xiao ◽  
Jidong Chai ◽  
Shun Xiao
Keyword(s):  
Social Benefits ◽  
Construction Technology ◽  
Construction Quality ◽  
Construction Companies ◽  
Quality Of Water ◽  
Water Conservancy ◽  
Construction Efficiency ◽  
National Infrastructure ◽  
Construction Works

As an important national infrastructure, the construction quality of water conservancy and hydropower projects is not only related to people's production and life, but also directly linked to the development of the national economy. Therefore, ensuring the quality of construction works is of great significance. The construction quality of water conservancy and hydropower projects depends to a large extent on the level of construction technology. In addition, construction technology is also inextricably linked to construction efficiency and construction cost. Therefore, construction companies must pay attention to the construction technology management of water conservancy and hydropower projects, and adopt scientific and reasonable construction technology to ensure the project according to the actual situation of construction Quality, give full play to the economic and social benefits brought by the construction of water conservancy and hydropower projects.

scholarly journals Discussion on Anti-seepage Wall and Anti-seepage Technology of Water Conservancy Project

2020 ◽  
Vol 4 (5) ◽  
Author(s):  
Jie Tao ◽  
Qingpo Wang
Keyword(s):  
High Pressure ◽  
Structural Changes ◽  
Water Infiltration ◽  
Construction Technology ◽  
Quality And Safety ◽  
Jet Grouting ◽  
Common Problems ◽  
Water Conservancy Project ◽  
Water Conservancy ◽  
Wall Construction

The water infiltration problem of water conservancy projects is one of the more common problems in the construction of water conservancy projects, which seriously affects the overall construction quality and safety of water conservancy projects. This article studies the causes of water infiltration in water conservancy projects and introduces related anti-seepage technologies, hoping to be a reference for the implementation of anti-seepage projects. Through research, it is found that the factors that cause water infiltration in water conservancy projects include water conservancy project structural changes, environmental factors and construction factors. Relevant personnel can use concrete anti-seepage wall construction technology and high-pressure jet grouting technology to do the relevant anti-seepage work of water conservancy projects.

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