土工膜是工程界长期以来一直寻求的一种优质轻便、便于施工、造价低廉、性能可靠的防渗材料。近些年来土工膜在水利水电工程中的应用已是一项热门新技术。土工膜一般分为沥青和聚合物。土工膜的名称很乱,曾称“塑料布”、“塑料薄膜”、“塑膜”等,1984年第一次国际土工膜讨论会上统一定名为土工膜(Geomembrane)。把土工 Geomembrane has long been sought in the engineering community has been a high-quality lightweight, easy construction, low cost, reliable performance impermeable material. In recent years, the application of geomembrane in water conservancy and hydropower projects has become a hot new technology. Geomembrane generally divided into asphalt and polymer. Geomembrane name chaos, once said “plastic sheeting ”, “plastic film ”, “plastic film ” and so on, in 1984 the first international geomembrane conference unified named Geomembrane (Geomembrane) . Geo