Drainage Geocomposite Made By A Three-dimensional

 

 

Drainage Geocomposite is mainly used in railway, highway, tunnel, municipal engineering, reservoir, slope protection and other drainage projects.

Product features: Good drainage, high tensile strength. Reduce the probability of geotextile embedment in the mesh core, and maintain long-term stable drainage. Long-term high pressure load (can withstand compression load of about 3000Ka). Corrosion resistance, acid and alkali resistance, long service life. Construction is convenient, shorten the construction period, reduce the investment.

 

 

 

 

 

The main function of hdpe geonet used      Drainage Geocomposite made by a three-dimensional

1. Drainage effect: laid on the base, used to discharge the water between the filler and the base, blocking the capillary water and effectively combined into the edge drainage system. This kind of structure automatically shortens the drainage way of the base, and the drainage time is greatly shortened, which can prevent the liquefaction of the slope soil and enhance the stability of the slope.

2. After composite geodrainage network and non-woven geotextiles are combined, under the buried closed cover layer, rainwater that permeates the soil cover layer or sewage discharged from the storage yard itself can be collected and orderly discharged from the interlayer of the soil mat according to the engineering requirements by using its unique drainage function, without the formation of silting.

3. Isolation effect: the geotextile of composite geodrainage network can effectively prevent the mixing of filler and base soil material

4. Geotextiles with filter function can prevent fine particles from entering the core gap, so as to ensure the long-term effectiveness of the core drainage capacity.

 

 

 

A Drainage Geocomposite  is a critical geosynthetic material in modern landfill engineering, specifically designed to provide high-performance drainage while integrating filtration and protection functions. This product typically consists of a three-dimensional geonet core, manufactured from rigid HDPE polymers, which is thermally bonded to one or two non-woven geotextile fabrics. This combination creates an all-in-one composite system that delivers superior hydraulic conductivity, filtration, and soil separation.

In a landfill's primary liner system, the Composite Drainage Geonet plays an indispensable role as the leachate collection layer. The standard configuration, from bottom to top, is as follows: first, a compacted clay liner forms the foundation. Above this, a smooth geomembrane-typically a 1.5mm to 2.0mm thick HDPE sheet-is deployed as the primary impermeable barrier to prevent leachate migration into the subsoil. The Composite Drainage Geonet is installed directly on top of this geomembrane. The geotextile side of the composite faces down, protecting the delicate geomembrane from puncture during installation and from long-term abrasion. The open, three-dimensional geonet core provides a robust pathway for the rapid conveyance of leachate, with a very high in-plane transmissivity, often exceeding 5 x 10⁻⁴ m²/s, even under the immense compressive loads of overlying waste.

A separation geotextile is then placed on top of the geonet. This fabric acts as a filter, preventing fine particles from the waste from clogging the drainage core, thereby maintaining its hydraulic capacity over the landfill's entire operational life. This synergistic system-geomembrane for containment, geonet for drainage, and geotextile for filtration and protection-ensures the efficient collection and removal of leachate, safeguarding the surrounding environment from contamination.

 

 

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