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Macro instability

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Issue

Flood hazard

An increased flood hazard because the flood defence does not meet the requirements and/or due to extreme conditions.

To improve the stability of the dike, a larger ground berm has to be installed. However, due to adjacent houses this cannot be implemented.

Solution

Vacuum consolidation

Vacuum consolidation is a technique to improve the stability of the dike. Water is pumped out of the ground, accelerating settlement and limiting lateral deformation.

vacuumconsolidatie tegen macroinstabiliteit verminderd druk in dijk

Pros

  • Stronger soil.
  • Smaller ground berms required.
  • Prevents horizontal deformations.
  • Accelerates settlement/consolidation.

Characteristics

  1. Topic Water safety
  2. Development state 9: Successfully used in operational situation
  3. Setting type Rural area
  4. Water type Surface water
  5. Project period 0-3 months