The three-dimensional composite drainage net is also called the geocomposite drainage net, which is made with double-layer geotextiles on one or both sides of the three-dimensional geonet by applying a special bonding processing technology. The three-dimensional composite drainage net combines the characteristics and functions of both geotextile and geonet. It has the charatertistics of filteration, drainage, ventilation, and enhanced protection. It is an ideal new type of drainage geotechnical material.
