Essential Aspects of Cut-Off Wall in Dam Construction
Despite sounding simple, Cut-Off Walls in dams are crucial structures that prevent water from seeping through the foundation and abutments. These walls are often made of concrete, steel, or even plastic, and are embedded deep within the ground to form an impermeable barrier.
In this article, we will explore the various essential aspects of Cut-Off Walls in dam construction, including their types, design, and construction methods.
Types of Cut-Off Walls
Cut-Off Walls come in various shapes and forms, each with its own advantages and disadvantages.
- Slurry Trench Cut-Off Walls: These walls are constructed by excavating a trench and filling it with a bentonite slurry. The slurry creates a waterproof barrier that prevents water from seeping through.
- Sheet Pile Cut-Off Walls: These walls are made of steel sheet piles that are driven into the ground to form a continuous barrier.
- Concrete Diaphragm Walls: These walls are made of concrete that is poured into a trench that has been excavated to the desired depth.
Design of Cut-Off Walls
The design of a Cut-Off Wall is a critical aspect of dam construction. The wall must be designed to withstand the hydrostatic pressure of the water behind the dam, as well as any other potential forces that may be acting upon it.
The thickness of the wall, the depth to which it is embedded in the ground, and the materials used in its construction are all important factors that must be considered during the design process.
Construction of Cut-Off Walls
The construction of a Cut-Off Wall is a complex and time-consuming process. The first step is to excavate a trench to the desired depth. The trench is then filled with the selected material, and the wall is allowed to cure.
The construction process can be affected by a number of factors, including the weather, the soil conditions, and the availability of materials.
Conclusion
Cut-Off Walls are an essential part of dam construction. They play a vital role in preventing water from seeping through the foundation and abutments of the dam.
The type, design, and construction method of a Cut-Off Wall are all important factors that must be carefully considered in order to ensure the safety and stability of the dam.
The Dam Section In Region Of Cut Off Wall Scientific Diagram
Schematic Of An Earth Dam With Cut Off Wall 1 Scientific Diagram
Numerical Stress Deformation Ysis Of Cut Off Wall In Clay Core Rockfill Dam On Thick Overburden Sciencedirect
Example Of A Cut Off Wall In Underground Dams Showing The Free Board Scientific Diagram
Deformation Ysis Of Suspended Type Cut Off Wall Diversion Structures Sciencedirect
A The Function Of Cutoff Here Was To Prevent Piping Failure And Scientific Diagram
Peribonka Dam Cross Section With Foundation Cutoff Wall Scientific Diagram
International Society For Soil Mechanics And Geotechnical Engineering
Performance Of Cutoff Walls Under Hydraulic Structures Against Uplift Pressure And Piping Phenomenon Springerlink
Coronach Sk Installation Of Jet Grout Cutoff Wall Infrastructure Grouting Levees And Dams Soil Cement Bentonite