Application of Polyester Filament Geotextile in Soft Soil Subgrade

Ⅰ. Overview of Subgrade Reinforcement and Settlement Prevention Project
The section features deep layers of silty soft soil with extremely low bearing capacity and significant natural settlement. Traditional stone replacement method is costly, time-consuming, and prone to collapse and deformation.

Ⅱ. Polyester Filament Geotextile Application Plan
A 400g long-filament polyester geotextile is laid at the subgrade base as an integrated cushion layer providing isolation, reinforcement, and filtration functions, while wrapping crushed stone for subgrade embankment construction.

Ⅲ. Polyester Filament Geotextile Application Results
·Subgrade bearing capacity increased by 35%, with differential settlement strictly controlled within 5 cm
·Effectively prevents upward squeezing of soft soil slurry and downward penetration of crushed stone, eliminating subgrade pumping and mud boiling
·Accelerates subgrade drainage and consolidation, shortening construction duration by 20% and reducing overall project cost by 15%
·No slippage or collapse under long-term heavy loads, ensuring long-term stability of high-speed subgrade