Shandong Chuangwei Non-woven Geotextile Applied in the Filter Layer of Meizhou Bay Port Project

1. Project Background

Affected by tide fluctuations and water flow scouring, improper design of the filter layer in Meizhou Bay Port may lead to the loss of backfill soil behind the embankment, threatening the stability of the embankment and the port's protection capabilities. Two layers of non-woven geotextiles and a mixed filter layer are installed on the outer side of the newly-built sloping breakwater, aiming to prevent the filling materials from being washed away, ensure smooth drainage, and maintain structural and ecological balance.

2. Scheme Design

The filtration and drainage properties of non-woven geotextiles are utilized. They allow water to pass through the drainage system, preventing damage caused by water accumulation, while intercepting soil particles and other materials to ensure the integrity of the embankment. In different projects, laying schemes are rationally designed according to environmental characteristics to achieve efficient drainage and anti-scouring.

3. Material Selection

400g/㎡ non-woven geotextiles are selected. With a permeability coefficient of 0.01 - 0.1cm/s, they meet the demand for rapid drainage. The tensile strength reaches 15kN/m, enabling resistance to impact and external forces. Their chemical stability and resistance to microbial erosion reduce long-term maintenance costs and ensure long-term stability.

4. Construction Process

For embankment laying, the slope surface is leveled and debris is removed first. Then, the geotextiles are laid from the bottom to the top, combining manual and mechanical methods. The lap width is controlled at 30cm and reinforced by stitching. For riverbank reinforcement, geotextile-reinforced retaining walls are constructed. Geotextiles are laid at the foundation and on each layer of block stones, connecting with those on the slope surface to form a complete protection system.

5. Application Effect

The geotextile filter layer effectively drains water and prevents scouring, avoiding soaking from accumulated water behind the embankment, intercepting sediment, and reducing embankment erosion. After application, the sediment content in the waters around the embankment decreases, water quality improves, and the service life of port facilities is significantly extended.