Repair and expansion of the Dratów reservoir

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The scope of work included renovation and expansion of the Dratów reservoir in the Wieprz – Krzna Canal system, commune Łęczna, area Łęczyński, object 1 – causeway of the Dratów reservoir along the Wieprz – Krzna Canal. The soil embankment was reinforced with soil stabilization technology using geotextile and AT CELL geocells. Geotextile fulfilling the function of separation and filtration, allows free flow of gases and water, while maintaining aggregate and preventing its leaching from the cell geogrid arranged along the crown.

The use of the AT CELL geocell system allows you to insure the slope of the dam dyke damaged by water ripples. A set of 15cm high tapes connected by ultrasonic welding is a system resembling the structure of the so-called honeycomb, which after filling with aggregate and thickening improves the mechanical parameters of aggregate trapped inside the cells. The aggregate filling the cells is blocked by the walls of the system, thanks to which it gains better compaction. In addition, the aggregate wedging process is observed, which has a positive effect on the internal friction angle of the backfill.

Properly compacted backfill together with the AT CELL geocell system prevents uneven settlement and reduces vertical forces. Thanks to this, the thickness of the structural layer of the foundation is appropriately modified. The use of the AT CELL geocell system allows to reduce the phenomenon of aggregate leaching, which has a significant impact on the stabilization and anti-erosion properties of the escarpment and embankments.