The seepage and drainage isolation layer refers to a material used to prevent water seepage or strengthen the impermeability of soil in geotechnical materials.
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Its function is to separate soil layers with different particle levels or with different hydrological properties, avoiding pulverization, mixing or loosening. The seepage and drainage isolation layer is widely used in tunnels, dams, water conservancy and hydropower projects, drainage ditches and other projects in the fields of water conservancy, transportation, construction, etc., to improve the permeability performance and stability of the project.
There are many kinds of seepage and drainage isolation layer materials, such as graphite tape, geotextiles, polyester non-woven materials, polymer permeable materials, etc., and different kinds of materials have different applicability in different projects. The selection of seepage and drainage isolation layer should be evaluated according to the engineering conditions, seepage characteristics, material properties, construction difficulty and other factors.
The advantages of the infiltration and drainage insulation layer include:1Improve the permeability of the project;2.Prevents mixing of soil layers of different particle levels;3.Protect the engineering structure and prevent soil erosion;4.It can improve the stability and durability of the process.
To sum up, the seepage and drainage isolation layer is one of the important materials to improve the permeability performance and stability of the project, which should be selected and used according to different engineering conditions.