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HDPE土工膜可以作为防渗结构层

作者:hengke 来源:肥城联谊工程塑料有限公司时间:2019-05-03 18:36:12 访问量:9
描述:随着生活垃圾填埋场环保要求的不断提高,填埋场要求铺设HDPE土工膜作为防渗结构层。HDPE膜作为一种热塑性树脂材料,具有热胀冷缩的特性,已铺设完成的HDPE膜会受冷发生悬空、受热发生褶皱,防渗系统的施工质量是生活垃圾填埋场的关键因素。
HDPE土工膜

随着生活垃圾填埋场环保要求的不断提高,填埋场要求铺设HDPE土工膜作为防渗结构层。HDPE膜作为一种热塑性树脂材料,具有热胀冷缩的特性,已铺设完成的HDPE膜会受冷发生悬空、受热发生褶皱,防渗系统的施工质量是生活垃圾填埋场的关键因素。近年来,我国生活垃圾填埋场要求必须铺设HDPE土工膜以满足填埋场的环保要求,但HDPE土工膜受温度应力影响较大。填埋场采用单层防渗系统,HDPE膜为2.0mm双光面膜和双糙面膜。为避免HDPE膜出现悬空情况,采用早晚施工,但当中午气温升高时已铺设HDPE膜会出现鼓包和褶皱情形,在坡脚区域纵向褶皱和场底横向尤为明显,最高褶皱高度多达15~20cm。

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hdpe土工膜施工工艺图集

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