Excellent hydraulic properties and durability are the keys to long-term stable service of polypropylene filament geotextiles in water conservancy projects， but the lack of relevant research data limits the in-depth understanding and product optimization of such fabrics. This thesis investigates the hydraulic properties and durability of fabrics with different unit area masses and with/without the addition of anti-aging masterbatch， and finds that the hydraulic properties of fabrics decrease with increasing unit area masses； fabrics with high unit area masses have degraded skin layer， but still have undegraded core layers in the middle， showing the effect of increased durability. At the same time， the addition of anti-aging maserbatches slightly reduced the hydraulic properties of the fabric， but the durability increased significantly， which was attributed to the anti-aging masterbatches' ability to prevent the formation of carbonyl groups， capture free radicals and decompose peroxides. This study provides key data to support the basic research and practical application of polypropylene filament geotextiles.
