One of the major challenges in infrastructure projects in Indonesia is erosion and abrasion. With advances in technology and knowledge, new breakthroughs have emerged to address these challenges, namely the use of geofabric for drainage and erosion control. High ocean waves without natural barriers such as mangroves can erode beach sand. Meanwhile, heavy rainfall and strong river flows can cause erosion. All of this can be controlled by the use of geofabric, which helps protect the base layer of soil or sand.
Non-Woven Geofabric Geofabric for Drainage and Erosion Control: Protective Geosynthetic Textile Sheet
Non-woven geofabric is a geosynthetic material in the form of a textile sheet produced without weaving, but rather by bonding or interlocking. This material can also be produced from synthetic fibers such as polypropylene or polyester, which creates a layer with high resistance to pressure, seawater, and chemicals. This material has a fabric-like appearance and varying permeability. In riverbank and coastal projects, non-woven geofabric serves as a protective layer between the soil and cover materials such as crushed stone or precast concrete.
Main Functions of Geofabric
Non-woven geofabric is permeable due to its surface with small, dense pores. This allows liquids to penetrate this layer, while solids are retained. Some of the main functions of non-woven geofabric include:
Filtration and Drainage
Geofabric allows water to pass through the soil layer, but retains fine particles from being carried away by the flow. This way, internal erosion is prevented and slope stability is maintained.
Separation
Geofabric sheets are used to prevent mixing between the subgrade and the protection material. This function is crucial for maintaining the integrity of the riverbank retaining structure.
Protection
Geofabric is often placed beneath protective stone or concrete to reduce the risk of abrasion and mechanical stress caused by currents and waves.
The Role of Non-Woven Geofabric
Here are the roles of geofabric for drainage and erosion control:
Protecting Waterways from Sediment Runoff
With the use of geofabric, water can continue to flow through the textile layer while sediment is retained on the surface. This helps maintain water clarity and prevents clogging of the drainage system. Furthermore, geofabric also acts as a natural filter, retaining fine particles without impeding water flow, thus preserving the ecosystem around the project site.
Reducing Erosion on Slopes and Allowing Revegetation
On sloping areas or open slopes, the risk of erosion increases due to rainwater flowing rapidly over the soil surface. Geofabric is used to stabilize the soil layer to prevent it from being easily eroded and washed away. This material works by holding soil particles in place while allowing water to slowly infiltrate into the underlying layers.
Providing a Complete Package of Erosion and Sediment Control Solutions
Modern geofabric is now available in a variety of shapes and configurations, providing a complete package of erosion and sediment control solutions for various types of construction sites. The combination of geofabric layers, geobags, and geocomposite drainage systems allows for total protection of subgrade, riverbanks, and coastal areas.
The use of geofabric for drainage and erosion control has been proven to improve soil stability, extend the lifespan of structures, and reduce long-term maintenance costs. With proper design and standard installation, this technology has significant potential for application in riverbank and coastal projects in Indonesia to address the increasingly complex challenges of abrasion and climate change.
For more information about Geotextile Non Woven please contact: Whatsapp/Mobile Phone: +62 811 9151 338 (Ms. Anna) or Email :info@urbanplastic.id