... of 3D drainage net and geotextiles:1.Compound drainage nets also called 3D geocomposite drainage, 3D geotechnique drainage board ... , shorten the construction period, lower cost. 5.Compound drainage nets is mainly used for railways, highways, tunnels, municipal engineering, ... tensile strengthKN/m≥15.0Vertical and horizontal8Peel strength of nets core and non-wovenKN/m≥0.39Complex hydraulic conductivitym2 ...