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一、前言最近10年来美国、荷、德等国又研制宽幅聚乙烯土工膜作为防渗漏衬垫材料.它具有较高抗拉强度,伸长率很高,韧性、抗低温性能和抗老化性强,耐化学腐蚀性良好.现已广泛地用于水利、建筑、市政、环保、电力、矿山和化工等部门的防渗、防污工程.如世界上最高的苏联努列克坝(高300m),其围堰高120m,上部50m用厚1mm的聚乙烯
I. Introduction In the recent 10 years, the United States, the Netherlands, Germany and other countries also developed wide polyethylene geomembrane as anti-leakage gasket material. It has high tensile strength, high elongation, toughness, low temperature resistance and resistance Aging and chemical corrosion resistance is good now widely used in water conservancy, construction, municipal, environmental protection, electricity, mining and chemical and other departments of anti-seepage, anti-fouling projects such as the world’s tallest Soviet Nuleikeba ( High 300m), the cofferdam height 120m, the upper 50m with a thickness of 1mm of polyethylene