Geonet Drain

Zhonglong's Triaxial Geonet Drain Series

Zhonglong's Traixial Geonet/Geocompostie drain is an advanced geosynthetic drainage material. It consists of a triaxial HDPE core (with UV and antioxidant additives) and needle-punched nonwoven geotextiles thermally bonded on one or both sides.

The core features larger longitudinal ribs for straight drainage channels and crisscross lateral ribs for enhanced stability, ensuring high transmissivity even under heavy loads. The integrated composite provides filtration, drainage, and protection functions, making it an ideal solution for modern drainage applications.

Sichaun Zhonglong Triaxial Geonet & Geocomposite Drain Structural Characteristics

Sichuan Zhonglong triaxial geocomposite drainage net and triaxial geonet are especially suitable for hazardous waste treatment projects, and are widely used in applications such as landfills, highways, tunnels and the backside of retaining walls...

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Why Are Triaxial Composite Geonet Drains Better Than the Biaxial?

A triaxial geonet core has a three-layer design. Thick longitudinal ribs run straight down the middle, which offer direct drainage channels. The other ribs are the same as biaxial geonet sitting above and below to provide support and stability.

Related products: Triaxial Composite Geonet Drain

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Triaxial Geonet Drain Features

Advanced Structure

Triaxial ribs enhance durability. It can endure high tensile strength, able to withstand high-pressure loads for a long time (able to withstand compression loads greater than 3000 kPa). It has great chemical resistance, long service life, lower cost and convenient construction.

Efficient Water Management

Inclined ribs on the top and bottom of geonet drain improve water transmissivity. It make the geonet can rapidly drain underground water, block capillary water under high construction loads and maintain optimal thickness for enhanced water conductivity. These deliver strong drainage capacity (equivalent to 1 m thick gravel drainage), effectively replacing traditional sand and gravel systems.

Comprehensive Performance

Geocomposite drain has functions of filtration, drainage, ventilation and protection. And it provides isolation for foundations and reinforces structural integrity, which reduce the probability of geotextile embedding and maintain long-term stable water transmissivity.

Product Category of Geonet Drain

Zhonglong's geonet drain are mainly divided into two types based on their shape and application scenarios：

Triaxial Geonet Drain

The triaxial geonet drain is a high-performance drainage core made of high-density polyethylene (HDPE), formulated with UV stabilizers and antioxidants for long-term durability. This product consists solely of the geonet core, without a bonded geotextile layer.

Its primary function is to collect and convey water or gas within engineered systems. When a separate filtration layer is provided, it serves as a reliable drainage solution for landfills, roadways, retaining walls, and tunnel applications.

Triaxial Composite
Geonet Drain

Triaxial composite geonet drain is a geosynthetic product made by bonding a geonet drain core to one or two layers of geotextile using a thermal bonding process. The core is made of high-density polyethylene (HDPE) used to collect and convey water or gas. The geotextile layers are filter, keeping small particles out of the drainage channels while allowing water to pass through. Composite geonet drain can replace gravel or sand drainage layers (approximate 1m thick) and be used for landfill leachate collection, roadway subgrade drainage, retaining wall drainage, tunnel waterproofing and green roof systems.

Triaixal Geonet Drain Size

Thickness	5–8 mm
Length/Roll	30–50 m（customizable）
Width	3m, 4m, 6 m

Download File: Zhonglong Drainage Geonet TDS

Triaxial Geonet Drain Technical Parameters

CJ/T 452-2014

No.	Item	Unit	Geonet Drain	Geocomposite Drain
1	Density	g/cm³	≥0.939	--
2	Content of carbon black	%	2–3	--
3	Longitudinal tensile strength	kN/m²	≥8.0	≥16.0
4	Longitudinal hydraulic conductivity (Normal load 500kPa, hydraulic gradient 0.1)	m/s	≥3.0 ×10⁻³	≥3.0 ×10⁻⁴
5	Peel strength	kN/m²	--	≥0.17
6	Mass per unit area of Geotextile	g/m²	--	≥200

Note: Technical Indexes of geotextile shall meet the requirements of GB/T 17639

Application Scopes of Triaxial Geonet Drain

1. Landscape & Recreational:

Gardens, artificial lakes, golf courses, ponds

2. Municipal Infrastructure:

Buildings, subways, tunnels, roofs, roadbeds, foundations

3. Environmental Containment:

Hazardous material warehouses, industrial waste sites, garbage landfills

4. Agricultural:

Animal husbandry facilities.

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Sichuan Zhonglong Environmental Protection Co., Ltd.

One-stop Geosynthetics supply and service

Sichuan Zhonglong Environmental Protection Co.,Ltd. is engaged in geosynthetics manufacture, sale, welding, installation, Remote auxiliary service. Sichuan Zhonglong Environmental Protection Co.,Ltd. located in the hometown of giant panda Chengdu, Sichuan, China. Zhonglong Team focuses on manufacturing, marketing, installation, application and R&D of geosynthetics such as HDPE geomembrane, composite geomembrane, geosynthetic clay liner （GCL）, filament geotextile, biaxial stretch geogrid, etc. We now have 120+ experienced staff and operate 13+ advanced production lines and exported our product and service over 20 countries.