Geocomposite drainage net, also called drainage net, is a synthetic drainage medium that replaces one to two feet of traditional aggregate while offering efficient drainage under similar site loads. It provides a cost-effective and lightweight alternative to traditional aggregate materials, reducing the need for extensive aggregate use. Geocomposite drainage nets deliver reliable drainage performance and find applications in various construction and civil engineering projects. They offer an effective solution for achieving proper drainage while minimizing environmental impact and project costs.

BPM Geosynthetics is the leading geosynthetics manufacturer and supplier, we offer a wide range of geosynthetics including drainage net, geomembrane and geotextile with custom sizes at best factory price.

1. What Is Geocomposite Drainage Net?

Geocomposite drainage net is designed to offer multiple functionalities. It combines the filtration function of geotextiles with the drainage and protection properties of geonets. The nonwoven geotextiles or geomembranes are thermally heat-bonded to both sides or one side of the geonet, providing additional filtration and reinforcement.

One of the key advantages of geocomposite drainage net is its excellent water conductivity. It efficiently allows water to pass through and promotes effective drainage, preventing the accumulation of water in various applications. This makes it suitable for a wide range of uses, including landfill drainage, roadbed and road drainage, railway drainage, tunnel drainage, underground structure drainage, retaining back wall drainage, as well as drainage in gardens and sports grounds.

By using geocomposite drainage net, construction projects can effectively manage water and prevent issues such as waterlogging and soil erosion. It ensures the durability and stability of structures by directing water away from critical areas and into designated drainage systems. This helps to maintain the integrity of the infrastructure, prolong its lifespan, and reduce potential damage risks.

Geocomposite drainage net is an engineered material that combines geotextiles and geonets to provide efficient drainage capabilities. It has various applications in civil engineering and construction, enabling effective water management and protection of structures from water-related issues.

2. What Are Functions of Geocomposite Drainage Net?

Geocomposite drainage net serves multiple functions due to its unique structure. The nonwoven geotextile outer layer provides excellent filtration, separation, and protection capabilities. Meanwhile, the three-dimensional structure of the drainage net ensures efficient drainage.

2.1 Drainage

The primary function of geocomposite drainage net is to facilitate effective drainage. Its three-dimensional geonet structure allows water to flow freely, preventing water accumulation and potential damage to structures. This drainage capability is valuable in applications such as landfills, dams, railway stations, and other projects where efficient water management is crucial.

2.2 Filtration

The nonwoven geotextile layer of the geocomposite drainage net acts as a filtration medium. It allows water to pass through while preventing the passage of fine particles and soil. This filtration function helps maintain the stability and performance of the drainage system by preventing clogging and maintaining the flow of water.

2.3 Separation

Geocomposite drainage net also serves as a separation layer in certain applications. It can be used to separate different materials, such as soil and drainage aggregate, preventing their mixing and ensuring the integrity of the overall system. This separation function is particularly beneficial in projects where different materials need to be contained or separated for proper functioning.

2.4 Protection

The nonwoven geotextile outer layer of the geocomposite drainage net provides protection to the underlying layers or structures. It acts as a barrier, preventing damage from external factors such as soil erosion, abrasion, or punctures. This protection function enhances the durability and longevity of the drainage system.

Geocomposite drainage net offers functions including drainage, filtration, separation, and protection. Its unique structure, combining geotextiles and geonets, enables efficient water management, prevents clogging, maintains stability, and provides long-term protection in various civil engineering and construction projects.

Geocomposite Drainage Net for Dam Construction Project in Guizhou
Geocomposite Drainage Net for Dam Project in Guizhou
Geocomposite Drainage Net for Dam Construction in Guizhou

3. What Is Geocomposite Drainage Net Used For?

Geocomposite drainage net is used for a variety of applications that require effective drainage and water management. Some common uses of geocomposite drainage net include:

Landfills: Geocomposite drainage net is employed in landfill projects to collect and divert leachate, which is the liquid produced by the decomposition of waste. It helps prevent the accumulation of leachate and facilitates its proper disposal or treatment.

Road and Railway Construction: Geocomposite drainage net is used in roadbed and railway construction to provide efficient drainage and prevent waterlogging. It helps maintain the stability and durability of the infrastructure by channeling water away from the construction site.

Retaining Walls: Geocomposite drainage net is utilized in retaining wall structures to relieve hydrostatic pressure and prevent water buildup behind the walls. It promotes proper drainage, reducing the risk of structural damage and instability.

Sports Fields and Gardens: Geocomposite drainage net is commonly employed in sports field construction and garden landscaping to facilitate effective drainage. It helps prevent waterlogging, ensuring proper soil health and optimal growth conditions for plants or turf.

Tunnels and Underground Structures: Geocomposite drainage net is used in the construction of tunnels and underground structures to manage water seepage and prevent water accumulation. It helps maintain the structural integrity of the underground infrastructure and protects it from water-related damage.

Erosion Control: Geocomposite drainage net can be used in erosion control applications to stabilize slopes and prevent soil erosion. It allows water to drain efficiently, reducing the erosive forces acting on the soil surface.

4. Why Choose BPM Geocomposite Drainage Net for Dam Project?

BPM geocomposite drainage net was chosen for the dam project due to its favorable characteristics and suitability for the specific requirements of the construction. The primary reasons for selecting BPM geocomposite drainage net are as follows:

Effective Water Drainage: The dam project requires a reliable drainage system to manage water effectively and prevent any potential water accumulation. BPM geocomposite drainage net, with its 750gsm HDPE geonet composite layer and 200gsm nonwoven geotextile, offers excellent water drainage capabilities. The geonet structure allows water to flow freely, while the nonwoven geotextile acts as a filtration layer, preventing clogging and maintaining the flow of water.

Protection of Waterproof Lining System: To ensure the dam’s integrity, a 1.0mm HDPE smooth geomembrane was chosen as the waterproof bottom lining system. The nonwoven geotextile in the BPM geocomposite drainage net provides an additional layer of protection for the geomembrane, preventing scratches or damage during installation or subsequent construction activities.

Quality and Reliability: BPM is a reputable supplier known for providing high-quality geosynthetic products. Their geocomposite drainage net offers durability, strength, and longevity, ensuring long-term performance and reliability in demanding applications like dam construction projects.

Customized Solution: BPM recommended a specific configuration of 750gsm HDPE geonet composite layer with 200gsm nonwoven geotextile based on the project requirements. This customized solution tailored to the dam construction company’s needs and provided an optimal balance of drainage capacity, filtration, and protection.

5. Specification of Drainage Net for Dam Project in Guizhou

  • Quantity – 130,000 square meters.
  • Roll size – 4.6m*50m

About BPM

BPM specializes in manufacturing and exporting  one stop geosynthetics products and solutions to worldwide customers since its foundation in 2007.  BPM has provided many types of effective and state of the art  geomembrane, geotextile, geocell, geosynthetic clay liners (GCLs), drainage board, geogrid to over 36 countries. 

BPM is not only manufacturing best quality geosynthetic products but also providing professional design and installation service. OEM, and ODM are also available.