Three-dimensional composite drainage network (also known as soil drainage board, tunnel drainage water board, water board discharge) is defined by the three-dimensional structure of the double-sided adhesive plastic mesh geotextile composed of water seepage, it can replace the traditional sand and gravel layers, mainly for landfill, roadbed and drainage tunnel wall material. In railways, highways and other transportation infrastructure, the safety and life of the project with its own drainage system too has a close relationship, which geosynthetic drainage system is an important component. Drainage network in the three-dimensional drainage network is a new type of geosynthetics. Composition structure is a three-dimensional geonet core, both sides have a needle stick perforated nonwoven geotextile. Three Dimensional core includes a thick vertical ribs, as well as the top and bottom of each one inclined ribs. Can be quickly discharged groundwater road, there is a void maintenance system itself, can block the capillary water under high loads. At the same time, it can also play the role of isolation and foundation reinforcement. A new type of geosynthetics. Characteristics of a drainage network 2, when the load of 720kPa, a gradient of 2%, the permeability of 2500m / d, the flow rate of 13 pm/m. 2. withstand 1200kPa load creep test after 10,000 hours, it retains more than 60% of the thickness. 3, three ribs water network core carbon black content of not less than 2%, density 0.94g / cm3, a tensile strength of not less than 36.5kN / m, a melt index of 1.0 g / 10min, a thickness of 7.6mm. 4, nonwoven geotextile apparent aperture 0.18mm, water permeability 0.26 Sec-1, permeability 0.2cm / sec, puncture strength 580N, trapezoidal tear strength of 356 N, grip the tensile strength of 900 N, grip extension strength 50%, the burst strength 2750kPa ******************************************* company : Xiang Shandong New Materials Co., Ltd. Address: Economic Development Zone in Shandong Lingxian northbound Welcome Home Contact: Manager Wang Mobile: 13791371909 Fax: 0534-8282005 Company Website: http: //www.sdlxgw.com/ *** ***************************************