Poor corrosion resistance of composite cloth Conventional drainage network composite fabric is made of PET, its acid and alkali resistance is poor, and easy to hydrolyze, in the tailings pond, red mud dumps, landfills and other leachate drainage system is easy to be corroded by acid and alkali and failure. Pore structure of composite cloth is easy to be clogged Conventional geotextile is loose, poor tension, after the landfill landfill particles invade the pore space and the core of the network leading to drainage channel blockage. Poor compression resistance of the mesh core Conventional drainage mesh has large pore size, unstable core structure, poor compressive capacity, and is easily deformed after being pressurized by the landfill, resulting in the drainage channel becoming small or closed.