Erosion Control Solutions

Erosion control products
Erosion Control

Erosion control is the practice of preventing or controlling wind or water erosion and sediment run-off from agricultural land, development areas, coastal areas, river banks and construction sites. The unregulated discharge of sediment laden water from construction activities into waterways causes a significant environmental impact. As a result, there is growing awareness of this environmental damage and regulators are becoming more rigorous in the enforcement of environmental laws.

Revegetation is an important component of effective erosion and sediment control and for offsetting the impacts of development and land clearing. A well-established surface cover is one of the most effective ways to control erosion. Vegetation reduces the impact of raindrops falling on bare soil and wind removing soil particles. It also reduces the speed of water flowing over the land.

Typical erosion control solutions include hard armouring such as stone riprap, shotcrete and pavement and natural products such as jute blankets, mulching and turf. Geosynthetic options such as Geomats, Turf Reinforcement Mats (TRM), Geocells and geogrid reinforced Concrete Mats promote revegetation, handle surface runoff and prevent the movement of sediment into watercourses.

Erosion Control Solutions
Flat Land ( < 1 in 10) Mild Slopes ( >1 in 10 to <1 in 4) Steep Slopes (> 1 in 4)
Erosion Control Blankets Bonded Fibre Matrix Concrete Mats
Nutrition Geomat Compost Blankets Cellular Confinement Systems (Geocells)
Gravelling Erosion Control Blankets Erosion Control Blankets
Mulching Nutrition Geomat Nutrition Geomat
Revegetation TRM, 3D Geomat TRM, 3D Geomat
Rock Mulching Revegetation Revegetation
Soil Binder Turfing Rock Amouring
Turfing Concrete Mats Shotcrete

Until vegetation is established, Geosynthetics Australia’s erosion control materials offer temporary protection from soil loss. Nutrition geotextiles protect the soil from erosion while encouraging strong and healthy vegetation. Nutri Geomat is a biodegradable erosion control mat consisting of high strength polymer fibres, needle-punched with wool and plant fibres. The geotextile binds with the soil while the organic fibres prevent moisture loss and decompose to fertilise the growing seedlings.

3D Geomats are composed of layers of synthetic fibres, filaments, nettings and/or mesh. These fibres trap soil particles and seeds, support young vegetation, encourage rapid root growth, secure plant roots and promote healthy growth. Erosion control geomats help protect bare soil from raindrop and wind erosion and prevent it being washed away until a vegetative cover is established. As a result they also encourage infiltration and decrease soil crusting and compaction.

Turf Reinforcement Mats (TRM) improve the shear capacity of natural vegetation in channel and swale restoration. Once vegetation is established, TRMs can withstand water velocities and shear stress values up to 4.6m/sec and 49kg/m2, respectively.

For steeper slopes, bridge abutments, high water velocity situations and places where vegetation cannot be established, cellular confinement systems (Geocells), geogrid reinforced concrete mats, gabions, shotcrete or rip rap offer long term erosion control.

Commonly Used Materials
Product Short and Gentle Slopes Steep Slope Stabilisation Channel Lining Swale Drain Sediment Control Wind Erosion Coastal Erosion Shoreline Structures
Hard Armour
Rip Rap (scour and water erosion) O O O O
Concrete Paving O O O O O
Gabions & Reno Mattresses O O O O
Shotcrete O O O
Biodegradable
Hydraulic Mulches O O O O
Nutrition Geotextile O O O O
Jute Mat O O O O
Jute Mesh O O O
Coir Log O O
Coir Net O O O
Geosynthetics
3D Geomat O O O
Turf Reinforcement Mat O O O O
Cellular Confinement System (Geocell) O O O
Geogrid Reinforced Concrete Mat O O O O O O
Silt Bags O
Silt Fences O O
Turbidity Barriers O O

Geosynthetic erosion control products can last for a few months in the case of biodegradable Nutri Geomat, to over 75 years for concrete mats or geocells.

Nutrition Geomat
Nutrition Geotextile blanket for erosion control

Biodegradable nutrition erosion control mat

Erosion Control 3D Geomat
3D Erosion control mat, Terramat, for erosion control

Multilayered polyethylene filament erosion control blanket

Turf Reinforcement Mats (TRM)
TRM by Propex, Landlok, Pyramat and Enkamat

Turf Reinforcement Mat for landscaping and erosion control

Geocells (Cellular Confinement System)
Cellular Confinement System for erosion control on slopes

Geocells

Building a geocell retaining wall, cellular confinement system, to stabilise an earthen wall

Constructing a geocell retaining wall to stabilise an earthen wall

Concrete Mats
Flexible geogrid reinforced concrete mat for stormwater, earthlok, erosion control

Drainage channel lined with geogrid reinforced concrete mat

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