Filtered geotextile is a water-permeable fabric made of polyester polymer fibers. According to the different processing technology, it can be divided into two categories: woven geotextiles and non-woven (non-woven) geotextiles. The more widely used is non-woven geotextiles, whose fibers are arranged irregularly or randomly and needle-punched. Its advantage is that the strength has no obvious directionality, unlike the high strength of the textile along the warp and weft, and the low strength in the oblique direction with the warp and weft.
Reverse filtration refers to keeping the soil particles affected by osmotic pressure from losing while allowing the liquid to pass through. Reverse filtration geotextile has the advantages of reducing the amount of engineering, convenient construction and fast speed. In water conservancy projects, it can effectively prevent pipe gushing and water leakage, and prevent the collapse of embankments. In addition, the reverse filtration geotextile has excellent puncture resistance and can resist most plant roots.
Please note that when the geotextile is used as the filter layer, it should be used as much as possible in the easy-to-repair parts to prevent it from being blocked and failed by fine-grained soil, such as the cushion under the slope protection, the filter layer under the drainage ditch downstream of the dam, and the filter layer of the downstream slope drainage. The application of geotextile reinforced cushion can increase the stability of the dam slope.
The above information is for reference only, it is recommended to consult the information about the filter geotextile - Yuesheng New Material - for more accurate and comprehensive information.