Black Geocomposite Drainage Net

 

 

 

Black geocomposite drainage net drainage system made of high-density polyethylene as raw material, adding color master extrusion, composite on both sides of about 300 grams of filament geotextile complex of new backward drainage material.

 

 

 

 

black geocomposite drainage net for landfills

1. Black geocomposite drainage net is used for groundwater drainage layer in the dump reservoir area;

2. 3D composite drainage geonet is used for leakage detection layer in the dump area;

3. 3D composite drainage geonet for leachate collection and drainage layer in the dump area;

4. 3D composite drainage geonet is used for sealing gas collection and drainage layer in the dump reservoir area;

5. 3D composite drainage geonet for surface water collection and drainage of sealed site in dump reservoir area;

 

 

In landfill project, 3D composite drainage geonet will be applied in leachate layer and seepage layers.

 

 

 

Black geocomposite drainage net is an advanced geosynthetic material engineered for high-performance drainage. It consists of a three-dimensional network core manufactured from virgin High-Density Polyethylene (HDPE), which is thermally bonded to one or two non-woven geotextiles. This composite structure creates an all-in-one system that seamlessly integrates separation, filtration, and drainage functions.

 

Its primary application domains are vast, focusing on civil and environmental engineering projects where efficient fluid management and long-term stability are paramount. Key uses include:
Landfill Engineering:Serving as the primary leachate collection layer and as a drainage layer in final cover systems. This is its most critical application.
Transportation Infrastructure:Providing drainage for roadways, railway embankments, and behind retaining walls to prevent water pressure buildup and subgrade weakening.

Water Resources Projects: Functioning as a drain within earth dams, riverbank protections, and canal linings to control seepage and ensure structural integrity.
Sporting and Green Infrastructure: Utilized beneath playing fields, roof gardens, and plaza decks to facilitate rapid drainage and prevent waterlogging.

The core purpose of the product is to provide a high-inflow, high-transmissivity conduit for liquids (like leachate or rainwater) while preventing the surrounding soil particles from migrating into and clogging the drainage pathway. Its high compressive strength allows it to maintain its flow capacity even under extreme loads.

Integration with Geomembranes and Geotextiles in a Landfill System.

In a modern municipal solid waste (MSW) landfill, the HDPE Composite Drainage Geonet works in concert with geomembranes and geotextiles to form a sophisticated, multi-layered containment system, often referred to as a composite liner system.

A typical bottom liner system, from bottom to top, comprises:
1. **Prepared Subgrade:** The compacted natural soil foundation.
2. **Geotextile Cushion Layer:** A non-woven geotextile (often 200-300 g/m²) is laid down to protect the delicate geomembrane from puncture by sharp subgrade particles.
3. **Geomembrane Liner:** A primary 1.5mm to 2.0mm thick HDPE geomembrane acts as the primary hydraulic barrier, impervious to leachate migration.
4. **HDPE Composite Drainage Geonet:** This is placed directly on top of the geomembrane. The geotextile layers on the geonet protect the geomembrane from abrasion. Its core provides a high-volume drainage path with a typical transmissivity rating of **≥ 5 x 10⁻⁴ m²/s** under pressures of **250-500 kPa**, ensuring any leachate is quickly conveyed to collection pipes.
5. **Protective Geotextile Layer:** Another geotextile (often **≥ 400 g/m²**) is placed on top of the geonet. This layer separates the waste from the drainage layer, filtering out fine particles and preventing bioclogging of the geonet's core.
6. **Waste Mass:** The municipal solid waste is placed on top.

In the **final cap system**, the same synergy exists:
1. **Waste Mass**
2. **Gas Collection Layer**
3. **HDPE Geomembrane** (as a barrier to water infiltration)
4. **HDPE Composite Drainage Geonet** (to drain any infiltrated water)
5. **Protective Soil Layer & Vegetation**

By combining these geosynthetics, the system achieves unparalleled performance: the geomembrane provides impermeability, the geotextiles provide filtration and protection, and the composite drainage geonet ensures rapid, reliable drainage, collectively safeguarding the environment from leachate contamination for decades.

 

 

 

Hot Tags: black geocomposite drainage net, China black geocomposite drainage net manufactures, suppliers, factory, HDPE 3D Salt Barrier Drainage Geonet, 3d Geonet Black Drainage Mats, 3D Composite Drainage Geonet