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Why the installation of geotextile is beneath the geomembrane

The black impermeable geomembrane is also the HDPE membrane. This geomembrane material has only a single layer of plastic, which is prone to aging during use. Thus, laying a layer of geotextile on the surface can solve this problem. So how thick should the surface geotextile be laid to protect the geomembrane? The thickness of geotextile ranges from 110 to 600g is a common type. The thicker the geotextile, the better its protective effect. For example, the thickness of the geotextile used in landfill plants is 600g, and the self-built reservoir does not need to be so thick. As long as there is 200g, it can protect the geomembrane material.

Geotextiles are divided into many types in the use of engineering, such as road maintenance, gravel blind ditch layer, etc. But, the thicknesses used in these engineering projects are different. This is to avoid using too thick or too thin, which can be cost-effective There is a relative reduction.

HDPE Geomembrane
Geomembrane

Generally, the construction of an HDPE geomembrane requires the use of geotextile for protection. The protective layer is divided into upper and lower layers. That is, one layer must be laid on the bottom of the geomembrane and one layer on the surface. The bottom layer is to prevent gravel or Sharp objects, and the surface layer is to prevent aging.

Because the geotextile has the performance characteristics of permeable, so everyone calls it permeable geotextile. Short-filament geotextile is made of polyester staple fiber or polypropylene after unpacking, opening, netting, and needle punching and consolidation, while filament geotextile is made of polyethylene resin as raw material after high temperature melting, punching and punching into a net, needle punching Consolidation molding. As long and short silk geotextiles are all non-woven production processes, it is customary to call them non-woven fabrics.

Composite Geomembrane
Composite Geomembrane

With the rapid development of my country’s economy and the improvement of people’s living standards, geotextiles and impermeable geomembranes are no longer limited to traditional waste landfills and garbage landfills, and other environmental protection projects. The increase in the construction of urban park facilities has led to a gradual increase in landscape engineering. Then it has become a trend to use permeable geotextiles and anti-seepage geomembranes as anti-seepage systems.

geomembrane and geotextile
Geomembrane VS Geotextile

Generally, the impermeable geomembrane has the characteristics of anti-seepage and isolation. It has good tensile ductility, anti-ultraviolet oxidation resistance, and excellent resistance to environmental stress cracking. It is used as an anti-seepage layer, and geotextiles are used as an anti-seepage layer. Reinforce and protect the HDPE impermeable geomembrane from being pierced and damaged by sharp objects. The permeable geotextile and the impermeable geomembrane are used together with “incomparable power”. For example, parks, communities, golf courses, and ski resorts all need to build artificial lakes or reservoirs. Artificial lakes in parks and communities are used to improve the appearance of the city and increase the beauty for people to play and enjoy. In golf courses, the shots are required to be farther and more accurate, which requires a large area of land, and artificial rivers need to be built nearby. Or the fountain can increase its beauty, and at the same time, it is necessary to build a reservoir to store rainwater to ensure the irrigation of the entire stadium green space; while in the ski resort, it is necessary to build an artificial lake to store rainwater for artificial snowmaking. The application of geotextile and geomembrane is used as double-layer or multi-layer impervious layer liner and protective layer liner in artificial lakes and reservoirs. Its construction period is short, transportation is convenient, construction is convenient, time-saving and labor-saving, and the project cost is reduced. Cost, and its good corrosion resistance and aging resistance ensure the durability and safety, and stability of the project. It is the first choice for users and construction parties.

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