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復合土工膜 - 應用范圍
土工膜在渠道防滲工程中的應用 分類:土工材料近年來，土工合成材料在巖
石工程，尤其是在防洪搶險工程中的大量應用及其成效，引起了廣大工程技術人員的高度重視。對于土工合成材料的應用技術，國家從防滲、反濾、排水、加筋、防護等方面，提出了規范性技術要求，大大加快了新材料的推廣應用步伐。該材料在灌區渠道防滲工程中得到廣泛應用，結合施工實踐，淺談土工膜的應用技術。
復合土工膜 - 土工膜性能
土工膜是一種新型建筑材料，原料是滌綸、晴綸、錦綸等高分子聚合物的合成纖維。按
復合土工膜
照制造方(fang)法分(fen)為：有(you)(you)紡(fang)土工(gong)(gong)膜(mo)和無紡(fang)土工(gong)(gong)膜(mo)兩(liang)種(zhong)類(lei)型。一般工(gong)(gong)程(cheng)主(zhu)要是使(shi)用(yong)(yong)的(de)無紡(fang)土工(gong)(gong)膜(mo).土工(gong)(gong)膜(mo)具有(you)(you)防(fang)(fang)(fang)滲、反濾、排水、隔離(li)、加(jia)固、防(fang)(fang)(fang)護、密封等多種(zhong)功(gong)能，它與常規(gui)的(de)砌(qi)石及砼材料(liao)防(fang)(fang)(fang)滲效(xiao)果相(xiang)比，具有(you)(you)投(tou)資(zi)(zi)低，施(shi)工(gong)(gong)工(gong)(gong)藝簡單，工(gong)(gong)期(qi)短(duan)，防(fang)(fang)(fang)滲效(xiao)果好，渠(qu)道有(you)(you)效(xiao)利(li)用(yong)(yong)系(xi)數高等優點，如(ru)咸(xian)陽市(shi)渭河堤(di)(di)(di)防(fang)(fang)(fang)工(gong)(gong)程(cheng)施(shi)工(gong)(gong)中，有(you)(you)針對(dui)性地對(dui)兩(liang)段河堤(di)(di)(di)，分(fen)別(bie)采用(yong)(yong)土工(gong)(gong)膜(mo)與傳統方(fang)法施(shi)工(gong)(gong)。經過兩(liang)種(zhong)施(shi)工(gong)(gong)方(fang)案進行(xing)比較(jiao)，使(shi)用(yong)(yong)土工(gong)(gong)膜(mo)修(xiu)筑(zhu)的(de)500m河堤(di)(di)(di)，共(gong)投(tou)資(zi)(zi)20.55萬(wan)元，投(tou)勞1.56萬(wan)個工(gong)(gong)日。而(er)用(yong)(yong)傳統方(fang)案修(xiu)筑(zhu)同樣長度河堤(di)(di)(di)，則需投(tou)資(zi)(zi)27.37萬(wan)元，投(tou)勞1.84萬(wan)個工(gong)(gong)日，兩(liang)方(fang)案相(xiang)比較(jiao)，運(yun)用(yong)(yong)土工(gong)(gong)膜(mo)新(xin)材料(liao)后，投(tou)資(zi)(zi)、投(tou)勞可分(fen)別(bie)降低25%和15%。寶雞(ji)峽灌區(qu)東四支渠(qu)節水改(gai)造、北干(gan)渠(qu)72km搶險工(gong)(gong)程(cheng)中成(cheng)功(gong)使(shi)用(yong)(yong)了(le)(le)這種(zhong)新(xin)型材料(liao)，不僅取得了(le)(le)明(ming)顯的(de)防(fang)(fang)(fang)滲效(xiao)果，而(er)且降低投(tou)資(zi)(zi)，縮短(duan)了(le)(le)工(gong)(gong)期(qi)，可謂(wei)一舉(ju)多得。