The renovation and extension of the reservoir Dratów

The works included the renovation and extension of the reservoir Dratów in the system of the Wieprz – Krzna Canal, rural commune Łęczna, district Łęczyński, object 1 – dyke of the reservoir Dratów along the Wieprz – Krzna Canal. To stabilise the bank of the reservoir, the soil stabilisation technology with the non-woven geotextile fabric and the PINEMA BG cellular geonet was used. The non-woven geotextile fabric with a filtration and separation function, helps the gases and water to flow freely and simultaneously holds the aggregate and stops it from being washed out from the cellular geonet laid along the top of the levee.

The use of the PINEMA BG geocell system helps secure the waterside bank of the dyke that was damaged by waves. A set of 15cm high bands combined by ultrasonic welding is structurally similar to a honeycomb and improves the mechanical parameters of the aggregate in the cells after it has been filled with aggregate and compacted. The aggregate that fills the cells is blocked by the walls of the system, which makes them more compacted. Moreover, the aggregate grains wedge between each other which improves the internal friction angle of the fill.

The well compacted fill with the PINEMA BG geocell system counteracts the uneven settlement and reduces vertical forces. This modifies the thickness of the structural layer of the base course appropriately. Moreover, the use of the PINEMA BG geocell system helps to stop washing out the aggregate, which increases the stabilisation and improves the anti-erosion properties of bluffs and embankments.