The drainage network core is a new type of geosynthetic material with a three-dimensional structure formed by a special extrusion molding process using high-density polyethylene (HDPE) as raw material. It includes a thick vertical rib, as well as a diagonal rib at the top and bottom. It can quickly discharge groundwater from roads and has a pore maintenance system that can block capillary water under high loads. At the same time, it can also serve as an isolation and foundation reinforcement function. The product is widely used in infrastructure such as railways, highways, tunnels, and landfills, playing a comprehensive role in "filtration drainage ventilation protection".