The Project:
- Construction of the anti-filtration barrier
- Protection against water corrosion of the embankment of polder Gardna
- Extension of the filtration route of groundwater
- Increase of the stability of the embankment structure
The Challenge:
- Weak subsoil of the embankment, mostly consisting of peat and high probability of uncontrolled earth settlement of the embankment structure.
The Solution:
- To apply the EcoLock GW 270/5.5 profiles made of hard PVC to be used as an anti-filtration barrier to prevent leakage and undercutting of the embankment by groundwater and, thanks to a proper length (2.0 – 9.0 m), to reach the top layer of fine sands, forming a support to the soil embankment body, improving its stability.
- In the construction of the embankment body a mix of peat and sand was used, in such a way as to achieve an elevation of the crown of embankments equal to 0.5 m above the water level.
Conclusions:
The number of GW-270 / 5.5 sheet piles used in the project, amounting to as much as 72000 m2, may be compared to the area of 11 football fields.
The installation of EcoLock vinyl sheet piling will prevent the erosion by groundwater and protect the area of 918 hectares against flooding.
