Versatile Three-Dimensional Drainage Geonet for Civil and
Environmental Projects
Product Introduction
Three-dimensional composite drainage network is a new type of
geosynthetic material with unique structure. It consists of a
three-dimensional geotechnical mesh core and two needle-punched
perforated non-woven geotechnical fabrics pasted on both sides. The
three-dimensional geotechnical mesh core includes a thick vertical
rib, as well as one oblique rib at the top and bottom.
Product Application
It is mainly used for drainage projects in railways, highways,
tunnels, municipal engineering, reservoirs, retaining slopes, etc.,
and has remarkable effects. It is widely used in underground water
collection and drainage projects in civil, transportation, water
conservancy, civil construction, mining, environmental protection
and other construction projects. It is also used more in landfill
sites, such as as the surface water diversion layer and gas
diversion layer of the landfill site closure system, and can also
be used as the main leachate collection and diversion layer (LCRS),
which can discharge the leachate from the impervious membrane in
time, making the water head less than the thickness of the
geotechnical drainage material, reducing the leakage of the
geomembrane caused by excessive water head; it can also play a role
in garden and sports field drainage.
Product Property
The three-dimensional composite drainage net has high tensile
strength and shear strength, can withstand long-term high pressure
loads, and can maintain a considerable thickness, providing good
water conductivity. In addition, it also has good corrosion
resistance and acid and alkali resistance, and has a long service
life.
Product Specification and Technical Index
| Drainage network core | Specification |
| Unit Weight(g/m2) | 750 | 1000 | 1300 | 1600 | 1800 |
| Thickness(OV=20pa, mm) | 5.0 | 6.0 | 7.0 | 7.6 | 8.0 |
| Hydraulic Conductivity(m/s) | K×10-4 | K×10-4 | K×10-3 | K×10-3 | K×10-3 |
| Elongation Rate(%) | < 50 | < 50 | < 50 | < 50 | < 50 |
| Tensile Strength(core network, KN/m) | 8 | 10 | 12 | 13 | 14 |
| Geotextiles(g/m2) | 200-200 | 200-200 | 200-200 | 200-200 | 200-200 |
(CJ/T 452—2014)
| Project | Index |
| 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 (Normal Load 500KPa, Hydraulic
Gradient 0.1)/(㎡/s) | ≥3.0×10-3 | ≥3.0×10-4 |
| Peel Strength/(KN/m) | — | ≥0.17 |
| Mass Per Unit Area Of Geotextile/(g/㎡) | — | ≥200 |
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