土工合成材料是指以高分子材料为主要原料的土工布、土工格室等,它是继钢材、水泥、木材之后的第四种新型建筑材料,分为织造型、非织造型、合成型和复合型4类,在水利、交通、建筑工程中能起到加强、防护、排水、反滤、隔离、防渗等作用。目前世界上以聚丙烯、聚酯为主要原料的土工布耗 Geosynthetics refer to geotextiles and geocells made of macromolecule materials. It is the fourth new type of building material after steel, cement, and wood. It is divided into weaving, non-woven, and synthetic types. Complex type 4 can play a role in strengthening, protecting, draining, filtering, isolating, and seepage prevention in water conservancy, traffic and construction engineering. At present, geotextile consumption is mainly based on polypropylene and polyester.