Woven geotextile plays an important role in various civil engineering projects, and its filtration performance and pore size stability in different soil environments have attracted much attention.
First, the particle composition of different soils varies significantly, with particles ranging in size and shape from coarse sand to clay. The filtration performance of woven geotextile depends on its pore size and distribution. For coarse-grained soil, the geotextile needs to prevent soil particles from being lost with water flow, and its pore size should be smaller than the effective particle size of the soil particles to ensure a good filtration effect and avoid piping and other phenomena. For fine-grained soil, such as clay, although its particles are smaller and not easy to drain, the geotextile must ensure sufficient water permeability to avoid clogging. This requires the geotextile to have appropriate porosity and pore size distribution so that water can pass through smoothly. while blocking fine particle agglomerates that may clog pores.
In terms of the chemical properties of the soil, such as pH, salt content, etc., they will have an impact on the geotextile. Acidic or alkaline soils may attack the fibers of the geotextile, reducing its strength and durability, which in turn affects pore size stability. High-salinity soil may cause salt to crystallize in the pores of the geotextile, clogging the pores and altering its filtration properties. Therefore, studying the long-term performance changes of geotextiles in soils with different chemical properties is crucial to evaluate their application effects in practical engineering.
Flow conditions are also critical factors. Water with a higher flow rate has a stronger impact on the geotextile, which may cause the fibers of the geotextile to shift, causing the pore size to become larger or uneven, thereby reducing the filtration performance. In the case of still water or low flow velocity, the deposition rules of soil particles on the surface of the geotextile are different, and filter cakes may gradually form, affecting the water permeability and pore size stability. Through experiments simulating different flow rates and water flow directions, we can gain a deeper understanding of the performance of geotextiles under various water flow conditions.
The production process and material properties of woven geotextile are directly related to its performance in different soil environments. Using high-quality fiber materials and advanced weaving technology, geotextiles with uniform pore diameter, high strength and good stability can be produced. For example, specially treated fibers can enhance their resistance to chemical erosion, and the optimized weaving structure can better adapt to the embedding of soil particles and the erosion of water flow, keeping the pore size relatively stable, thereby ensuring long-term stable filtration performance.
The combination of long-term field monitoring and laboratory accelerated aging testing is an effective means to evaluate the performance evolution of woven geotextile in actual soil environments. Sensors are installed in actual projects to monitor parameters such as the water permeability of the geotextile and changes in soil particle distribution; in the laboratory, the aging process of the geotextile is accelerated by simulating long-term soil erosion, chemical effects, water erosion and other conditions, and its performance under different conditions is predicted. The service life and performance change trend in soil environment provide scientific basis for engineering design and material selection, ensuring that woven geotextile can effectively play its filtering and stabilizing role under various soil conditions, ensuring the quality and safety of civil engineering.
