Geosynthetics provide easy-to-implement solutions for flood protection

For over 40 years, geosynthetics have provided easy-to-implement solutions for flood protection.

When waters rise in a levee system, the integrity of the levee itself may be at risk if the water overtops. The “dry” side of the embankment often lacks the engineering found at the expected interface of water and soil/structure.

But, if water reaches the other side of the levee, that embankment often earthen may develop rills. Erosive water might seep into the core of the levee, weakening it, and precipitate failure. Geosynthetics resolve threats like this, often in ways that can be adapted easily to the local conditions. This flexibility in options is one of the great advantages in incorporating geosynthetics.

For flood protection designs, Secutex® geotextiles provide filter stability, drainage performance, and soil separation. They prevent clogging and guard against piping to maintain the integrity of a flood defense structure.

Carbofol® geomembranes and Bentofix® geosynthetic clay liners provide long-term containment protection. Bentofix® X coated GCL can provide a durable and uniform polyethylene coating on the material’s woven side, creating an additional low permeability barrier for exceptional waterproofing.

For earthen embankments and flood plains, Secumat® erosion control materials give roots security and help retain soil in heavy precipitation. The labyrinth-like, three-dimensional matrix of the erosion control matting prevents the sliding and washing out of the soil and cover layer while facilitating rapid vegetation growth. The reinforcing character of the matting prevents erosion under heavy rains and water flows.

Reinforcement geosynthetics are used too. In poor soil conditions or on steeper slopes, Secugrid® geogrids can be used to further ensure slope stability. Combigrid® geogrids are also an option. The unique construction of the product embed a nonwoven geotextile within the high-strength bar of the geogrid, thus providing separation, drainage, and filtration along with the expected reinforcement.