Geotechnical Composite Drainage Net 2m-6m Width with 5mm-8mm Thickness for Underground Structure Drainage

Price Negotiable

Price: 0.96USD~3.44USD per sqm

MOQ: 90㎡

Delivery Time: 7-15 days

Brand: JianYi

Product Description

Product Overview

The three-dimensional composite drainage net features a unique geonet core double-sided bonded with geotextile, combining reverse filtration and drainage functions into a complete "reverse filtration-drainage-protection" system. The three-dimensional structure withstands high compressive loads while maintaining substantial thickness for excellent hydraulic conductivity.

Key Applications

Road Construction: Drainage for roadbeds and tunnel inner walls in highways and railways, improving safety and service life
Municipal Engineering: Urban drainage systems including reservoirs and slope protection projects
Landfill Operations: Bottom drainage layer for timely discharge of biogas and harmful gases
Hydraulic Engineering: Dams, reservoirs, and water control projects for enhanced stability
Gardens & Landscaping: Underground structure drainage for garden and road applications

Technical Specifications

Drainage Network Core Specifications

Parameter	750 g/m²	1000 g/m²	1300 g/m²	1600 g/m²	1800 g/m²
Thickness (20kPa, mm)	5.0	6.0	7.0	7.6	8.0
Hydraulic Conductivity	K×10⁻⁴ m/s	K×10⁻⁴ m/s	K×10⁻³ m/s	K×10⁻³ m/s	K×10⁻³ m/s
Elongation Rate (%)	< 50	< 50	< 50	< 50	< 50
Tensile Strength (KN/m)	8	10	12	13	14
Geotextiles (g/m²)	200-200	200-200	200-200	200-200	200-200

Standard Compliance (CJ/T 452-2014)

Parameter	Geotechnical Drainage Network	Geotechnical Composite Drainage Network
Density (g/cm³)	≥0.939	--
Carbon Black Content (%)	2~3	--
Longitudinal Tensile Strength (KN/m)	≥8.0	≥16.0
Longitudinal Hydraulic Conductivity (500kPa, 0.1 gradient)	≥3.0×10⁻³ m²/s	≥3.0×10⁻⁴ m²/s
Peel Strength (KN/m)	--	≥0.17
Mass Per Unit Area of Geotextile (g/m²)	--	≥200

Manufacturing Process

Material Preparation: High-density polyethylene (HDPE) or polypropylene (PP) core with non-woven geotextile outer layers for durability and drainage performance
Extrusion and Forming: Core structure formed through melting and extrusion, creating three-dimensional channels for high compressive strength and efficient water flow
Lamination: Geotextile fabric bonded to both sides using heat and pressure, creating effective filtration barriers
Cutting and Rolling: Final product cut to required dimensions (2m-6m width) and rolled for transportation, with quality control throughout production