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FLUTSCHUTZ DeichKADE

For construction of a conventional sandbag alignment to protect low-lying areas in case of flooding huge amounts of sandbags are needed. Approximately 7,000 sandbags are needed for a conventional alignment 0.5 m high and 100 m long. Therefore, many hands as well as material and transports are needed to install and dismantle such a system.

Developed by Bremen City University of Applied Sciences

The innovative FLUTSCHUTZ DeichKADE is a non-stationary water-filled tube system made of reinforced plastic membranes. Its purpose is to offer an emergency dam system with a narrow footprint to protect low-lying areas against flooding. The installation and dismantling of a FLUTSCHUTZ DeichKADE is much more easy and rapid compared to conventional sandbag systems. No additional anchorage like mounting bars and end constructions are necessary and the construction is held in place by its own weight.

TRL5. Laboratory testing of integrated system
Technology validated in relevant environment. Fidelity of breadboard technology increases significantly. The basic technological components are integrated with reasonably realistic supporting elements so they can be tested in a simulated environment. Examples include “high-fidelity” laboratory integration of components. The FLUTSCHUTZ DeichKADE is in development within the research project DeichKADE, funded by the German Federal Environmental Foundation DBU. Tests of prototypes have been made in different testing facilities including overtopping tests.

See more information about this level and the TRL and SRL levels.

The main components of the system have been tested separately, and an initial integration exercise has been conducted.

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How does it work?

The FLUTSCHUTZ DeichKADE is made of flexible, water-filled membranes. The empty membrane can be brought easily to the endangered area. First, the membrane is filled with air using a gasoline-driven booster. After proper placement of the air-filled construction the air fill is replaced by water using a gasoline-driven pump. For filling the on-site available flooding water can be used directly.

Limitations/conditions under which this innovation does not work or is less effective

Only for emergency use with restricted flood water levels at the construction of maximum 0.6 m high. Overtopping tests have been successfully. Nevertheless, overtopping water levels at water-filled structures always bear the risk of failure.

Added value

The FLUTSCHUTZ DeichKADE offers the following advantages compared to conventional sandbag systems: – Low consumption of resources – Rapid deployment – Only few personnel required Furthermore, due to the narrow footprint of the system it is possible to use the construction also on sites with limited space.

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