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复合土工膜是用聚乙烯或聚氯乙烯的增强改性压延成膜,与涤纶针刺土工布热合而成,具有抗拉、抗顶破、抗撕强度高,延伸性能好,变形模量大,耐老化,防渗性能好,使用期长等特点。复合土工膜由于具有上述特点,在水利水电建设工程中得到广泛运用,取得了良好的经济效益和社会效益。结合防城港电厂复合土工膜施工情况,阐述复合土工膜在防城港电厂贮灰场底部防渗处理中的应用。
Composite geomembrane is polyethylene or polyvinyl chloride modified calendered film, and polyester acupuncture geotextile heat together, with tensile, anti-bursting, tear strength, good elongation, high modulus of deformation , Anti-aging, anti-seepage performance, long service life and so on. Due to the above characteristics, the composite geomembrane has been widely used in water conservancy and hydropower projects and has achieved good economic and social benefits. Combined with the construction of composite geomembrane in Fangchenggang Power Plant, the application of composite geomembrane in seepage control at the bottom of ash storage yard in Fangchenggang Power Plant is described.