Gravel Drain Method (Gravel drain method)

Low vibration, low noise implementation possible close to existing structures

The gravel drain method is a countermeasure against liquefaction that can be implemented close to existing structures or in urban environments where vibration or noise are a concern. Forming gravel piles in sandy ground shortens horizontal draining distance and prevents liquefaction by stopping the rise in pore water pressure that occurs during earthquakes.

Features

  • Low vibration, low noise method

    A method to prevent liquefaction that can be implemented in urban areas

  • Can be implemented close to existing structures

    Implementation causes extremely low ground deformation and so has no impact on nearby structures

  • High quality method

    A special vibrating rod fitted to the tip of the casing pipe forms densely packed gravel drains

Implementation Method