After laying, woven geotextile is easy to shift. To ensure its fixation, practical skills should be implemented from the construction details. Before construction, the laying site should be thoroughly cleaned, and gravel, weeds and sharp objects on the ground should be removed to prevent these debris from affecting the fit between the woven geotextile and the foundation. At the same time, the site should be leveled and compacted to keep the foundation surface uniformly flat, providing a stable foundation for the laying of woven geotextile, which can reduce the displacement problem caused by uneven force caused by the uneven ground.
Digging a suitable anchoring trench is an effective means to fix the woven geotextile. Dig a trench around the laying area. The depth and width of the trench are determined according to the specifications of the woven geotextile and the engineering requirements to ensure that the edge of the woven geotextile can be accommodated and sufficient anchoring force can be provided. Lay the edge of the woven geotextile into the trench, and then compact it in layers with soil or other filling materials to make the edge of the woven geotextile tightly combined with the trench, just like adding "anchor points" around the woven geotextile to firmly fix the edge and prevent overall displacement.
Choosing the right fixing material can enhance the stability of woven geotextile. Common fixing materials include U-shaped nails, sandbags, stones, etc. U-shaped nails are suitable for a variety of foundation conditions. They are inserted into the woven geotextile and the foundation at a certain interval. The shape of the U-shaped nails and the rigidity of the material are used to fix the woven geotextile on the ground. Sandbags and stones can be placed on the surface of the woven geotextile to exert pressure on the woven geotextile through their own weight. Especially in the scene of temporary laying or rapid fixing, this method is simple and effective, and can prevent the displacement of the woven geotextile in time.
Proper tensioning of the woven geotextile during laying is a key skill. During laying, the woven geotextile should not be allowed to sag or wrinkle. It should be slowly unfolded along the laying direction and a certain tension should be applied to keep the woven geotextile flat and tight. This allows the woven geotextile to fully contact with the foundation, reducing the displacement space caused by sag, while making the force on the fixing point more uniform, improving the overall fixing effect, and ensuring that the woven geotextile can be stably attached to the foundation after laying.
The treatment of the seams is also important to prevent displacement. When multiple pieces of woven geotextile need to be spliced, the quality of the seams directly affects the fixing effect. Use overlapping stitching or hot-melt welding to connect, and the overlapping width must meet the engineering requirements to ensure that the seams have sufficient strength. Use strong thread when stitching, and control the temperature and pressure when welding to make the seams tightly combined. After treating the seams, add fixing points on both sides of the seams, such as hitting more U-shaped nails or placing sandbags, to further strengthen the fixation of the seams and avoid the displacement of the woven geotextile due to cracking of the seams.
When laying in special terrain or environment, targeted fixing measures should be taken. For example, when laying on a slope, in addition to conventional fixing methods, it is necessary to add fixing points above and below the slope, use anchor rods or longer U-shaped nails to penetrate into the foundation, increase the tension on the woven geotextile, and prevent it from sliding down due to gravity. In areas with strong winds, in addition to fixing the edges and surfaces, you can also cover the woven geotextile with a windproof net or press more weights on it to resist the impact of wind on the woven geotextile and reduce the possibility of displacement.
After the construction is completed, timely inspection and maintenance should be carried out. Carefully check whether the fixing points of the woven geotextile are loose, whether the edges are lifted, and whether there are signs of displacement on the surface. Once a problem is found, take remedial measures in time, such as reinforcing loose U-shaped nails, replenishing sandbags, or re-compacting the filling materials of the anchor trench. In the subsequent construction or use of the project, avoid unnecessary rolling or pulling on the woven geotextile, and conduct regular inspections to ensure that the woven geotextile is always fixed and plays its due engineering role.
