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FILTRATION

Hydraulic structures need to be stabilized by appropriate protection systems. These systems are comprised of two different parts.

The outer part must absorb the hydraulic energy of the waves. The function of the inner part is to prevent the soil from being eroded. This function is referred to as filtration. Several layers of granular material with well-designed grain size and thickness have been widely used for this purpose. Construction of granular filters is usually expensive, time consuming, and difficult to control.

Geotextiles can be used as a substitute for conventional aggregate filters and provide a direct transition between the revetment and the subsoil.

BENEFITS

  • It reduces the number and thickness of granular filter layers and hence the cost

  • It provides uniform hydraulic and filtration characteristics

  • It is easy to install and control at site

 

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