土工(gong)(gong)膜(mo)又稱之為防(fang)滲膜(mo)、防(fang)水(shui)板，使用范圍也非常(chang)廣(guang)泛，廣(guang)泛用于各種(zhong)需要(yao)防(fang)滲隔離的項目工(gong)(gong)程中(zhong)，土工(gong)(gong)膜(mo)以自身特(te)性被業內人士所(suo)認可。

　　土(tu)工(gong)(gong)(gong)(gong)膜(mo)都是埋于地下(xia)(xia)，只(zhi)能順其自然了，土(tu)工(gong)(gong)(gong)(gong)膜(mo)很(hen)難自然降解，如(ru)果工(gong)(gong)(gong)(gong)程翻修(xiu)或者(zhe)另作他用(yong)(yong)時，只(zhi)能當垃(la)圾清(qing)(qing)理了，有些(xie)很(hen)麻煩。不過(guo)土(tu)工(gong)(gong)(gong)(gong)膜(mo)對(dui)環境(jing)基本沒有破壞(huai)。土(tu)工(gong)(gong)(gong)(gong)膜(mo)的使(shi)用(yong)(yong)年(nian)(nian)限(xian)問題，主要(yao)是由塑料薄膜(mo)是否具有防滲隔水(shui)(shui)作用(yong)(yong)而定(ding)，據有關科(ke)研單位測(ce)定(ding)，防滲用(yong)(yong)的厚度為0.2mm的加穩定(ding)劑的聚乙烯薄膜(mo)，在清(qing)(qing)水(shui)(shui)條件下(xia)(xia)工(gong)(gong)(gong)(gong)作年(nian)(nian)限(xian)可(ke)達(da)幾十年(nian)(nian)，在污水(shui)(shui)條件下(xia)(xia)工(gong)(gong)(gong)(gong)作年(nian)(nian)限(xian)為30至40年(nian)(nian)。因此土(tu)工(gong)(gong)(gong)(gong)膜(mo)的使(shi)用(yong)(yong)年(nian)(nian)限(xian)足以滿足大壩以及(ji)水(shui)(shui)利工(gong)(gong)(gong)(gong)程防滲要(yao)求(qiu)的使(shi)用(yong)(yong)年(nian)(nian)限(xian)。

　　土工膜(mo)藕池(chi)專(zhuan)用防(fang)滲膜(mo)具有高(gao)強抗拉伸機械性，它(ta)優(you)良的彈性和變形能力使其非(fei)常(chang)適(shi)用于膨脹(zhang)或(huo)收縮基面(mian)，可有效克服基面(mian)的不均(jun)勻(yun)沉降，化學穩定性-防(fang)滲膜(mo)具有優(you)異的化學穩定性，被廣(guang)泛用于污水處理，化學反應池(chi)，垃圾填埋場。耐(nai)(nai)高(gao)低溫，耐(nai)(nai)瀝青,油(you)(you)及焦油(you)(you)，耐(nai)(nai)酸、堿(jian)、鹽(yan)等80多種強酸強堿(jian)化學介(jie)質腐蝕。

　　土工膜(mo)全稱(cheng)"高密度聚乙烯土工膜(mo)"，具有(you)優(you)良的(de)耐(nai)環境應力(li)開(kai)裂性能，抗(kang)(kang)低溫、抗(kang)(kang)老化、耐(nai)腐蝕性能，以及較(jiao)大的(de)使用(yong)溫度范圍(wei)和較(jiao)長的(de)使用(yong)壽命50年，廣泛使用(yong)在生活垃圾填(tian)埋(mai)場防滲，固廢填(tian)埋(mai)防滲，污水處理廠防滲，人工湖防滲，尾礦處理等(deng)防滲工程。