Drainage mesh

Composite Drainage Mesh (also known as three-dimensional geotextile drainage board, tunnel drainage board, and drainage board) is composed of a plastic mesh with a double-sided bonded geotextile, providing an alternative to traditional sand and gravel layers. It is primarily used for drainage in landfill sites, road bases, and tunnel interiors. In transportation infrastructure such as railways and highways, the safety and service life of the project are inextricably linked to its drainage system, with geosynthetic materials being an essential component of this system.

Performance Features:

1. High drainage capacity (equivalent to one meter of gravel).

High tensile strength.

3. Minimize the likelihood of geotextile embedding into the core matrix, ensuring long-term stable drainage.

4. Capable of withstanding long-term high-pressure loads (can bear approximately 3,000Ka of compressive loads).

5. Corrosion and acid-resistant, with a long service life.

6. Easy construction, shortened project timeline, and cost reduction.

Application:

Highly effective in drainage projects such as railway, highway, tunnels, municipal engineering, reservoirs, slope protection, etc.

Quality Requirement for Welded Seam of Composite Drainage Mesh:

For the double-seam inflation, the length should be 30-60mm between the double welds, with an inflation pressure reaching 0.15-0.2MPa, maintained for 1-5 minutes, with no significant pressure drop to be considered qualified.

2. Single weld seams, T-joints, and repair points should be subjected to vacuum testing using a 50cm x 50cm grid. The vacuum pressure must be greater than or equal to 0.005 MPa, held for 30 seconds, and no bubbles should form in the soap solution to pass.

3. Indoor Testing: Weld tensile strength should be greater than the base material strength.

4. Quality inspection should be conducted as construction progresses.