Why is the filament geotextile not easy to break the needle?
Release time:
2023-12-21
Both filament geotextile and staple needle-punched geotextile must be needle-punched. If the technical content of the needle-punching equipment is not high or there is a lack of corresponding detection means, there will be a possibility of broken needles in the finished geotextile. Why is it not easy for filament geotextile to break needles?
Both filament geotextile and staple needle-punched geotextile must be needle-punched. If the technical content of the needle-punching equipment is not high or there is a lack of corresponding detection means, there will be a possibility of broken needles in the finished geotextile. Why is it not easy for filament geotextile to break needles?
It is very unlikely that the angle between the broken needles in the geotextile and the plane of the geotextile is 0. On the contrary, due to the influence of the production process, it is very likely that they will be connected at 90 degrees.
After the landfill is built and put into use, those hidden broken needles are likely to directly damage the geomembrane, thereby greatly weakening the anti-seepage function of the anti-seepage layer.
It will also cause the loss of the anti-seepage layer and cause the leakage of landfill leachate. Due to the gap in production equipment and technical level, in actual engineering, the probability of encountering broken needles when using staple needle-punched geotextiles is much greater than that of filament geotextiles.
In the construction process of the anti-seepage layer of the landfill, a variety of cross-operations are used. This will cause construction personnel and vehicles to pass through the laid geotextile many times. In order to avoid the loss of the protective function of the geotextile caused by the fibers pulled out of the soles of shoes or tires, the construction site usually requires that when the soles of personnel or the tires of vehicles pass through the laid geotextile, no metal or other angular foreign objects should be attached.
Since the structural basis of filament geotextile is continuous filaments, the physical holding force between fibers is strong, and the possibility of fibers being removed from the surface of the non-woven fabric by external forces is small, it has better resistance to external puncture damage and is more conducive to dry land construction than short-fiber geotextile.
As the depth of landfill increases, the geotextile used for the slope of the landfill will be subjected to stress along the fabric direction for a long time. In this case, if the geotextile creeps, its technical specifications will be reduced. Due to the fiber structure, the creep resistance of filament geotextile is higher than that of short-fiber needle-punched geotextile.
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