堆石坝土工膜
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土工膜以高分子聚合物为基础原料制成，是防水阻隔型材料，主要分为聚乙烯（PE）土工膜、低密度聚乙烯 (LDPE)土工膜、高密度聚乙烯（HDPE）土工膜、聚氯乙烯（PVC）土工膜、 氯化聚乙
订购热线: 18653400767
土(tu)(tu)工(gong)膜(mo)以高分(fen)子聚合(he)物为基础原料(liao)(liao)制成，是防水(shui)阻(zu)隔型材料(liao)(liao)，主要分(fen)为聚乙(yi)烯(xi)(xi)（PE）土(tu)(tu)工(gong)膜(mo)、低密度聚乙(yi)烯(xi)(xi) (LDPE)土(tu)(tu)工(gong)膜(mo)、高密度聚乙(yi)烯(xi)(xi)（HDPE）土(tu)(tu)工(gong)膜(mo)、聚氯乙(yi)烯(xi)(xi)（PVC）土(tu)(tu)工(gong)膜(mo)、 氯化聚乙(yi)烯(xi)(xi)（CPE）土(tu)(tu)工(gong)膜(mo)及各种复合(he)土(tu)(tu)工(gong)膜(mo)等(deng)。
土(tu)工(gong)(gong)(gong)(gong)合(he)成材(cai)料(liao)(liao)在(zai)(zai)我(wo)国(guo)的(de)(de)发展应用(yong)(yong)(yong)进(jin)程(cheng)(cheng)(cheng)，大(da)致可分(fen)为 3 个(ge)阶(jie)(jie)段：自(zi)发应用(yong)(yong)(yong)阶(jie)(jie)段，自(zi) 20世纪 60 年(nian)(nian)(nian)代(dai)引入土(tu)工(gong)(gong)(gong)(gong)合(he)成材(cai)料(liao)(liao)技术(shu)至 70 年(nian)(nian)(nian)代(dai)末(mo)期；技术(shu)引进(jin)阶(jie)(jie)段，从(cong) 20 世纪 80 年(nian)(nian)(nian)代(dai)初至 80 年(nian)(nian)(nian)代(dai)末(mo)；建设与完(wan)善阶(jie)(jie)段，从(cong) 20 世纪 80 年(nian)(nian)(nian)代(dai)末(mo)至今，90 年(nian)(nian)(nian)代(dai)后，土(tu)工(gong)(gong)(gong)(gong)合(he)成材(cai)料(liao)(liao)技术(shu)的(de)(de)设计(ji)模型及(ji)方(fang)法和实验测试方(fang)法都(dou)得到发展。土(tu)工(gong)(gong)(gong)(gong)膜(mo)(mo)在(zai)(zai)国(guo)内应用(yong)(yong)(yong)起步相对较晚。20 世纪 60 年(nian)(nian)(nian)代(dai)中(zhong)，我(wo)国(guo)开(kai)始在(zai)(zai)渠(qu)道上使(shi)用(yong)(yong)(yong)土(tu)工(gong)(gong)(gong)(gong)膜(mo)(mo)材(cai)料(liao)(liao)和技术(shu)。从(cong) 80 年(nian)(nian)(nian)代(dai)开(kai)始，尝试在(zai)(zai)小型和中(zhong)型土(tu)石坝除险(xian)加固(gu)工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)中(zhong)应用(yong)(yong)(yong)，80 年(nian)(nian)(nian)代(dai)末(mo)，在(zai)(zai)部(bu)分(fen)中(zhong)小型土(tu)石坝新建工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)中(zhong)应用(yong)(yong)(yong)了(le)土(tu)工(gong)(gong)(gong)(gong)膜(mo)(mo)。近十几年(nian)(nian)(nian)来一些(xie)较大(da)的(de)(de)工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)中(zhong)，多数采用(yong)(yong)(yong)较厚的(de)(de)土(tu)工(gong)(gong)(gong)(gong)膜(mo)(mo)或复合(he)土(tu)工(gong)(gong)(gong)(gong)膜(mo)(mo)用(yong)(yong)(yong)于防渗。
国内土工膜防(fang)渗(shen)堆石坝的(de)(de)使用(yong)，从工程(cheng)规模上看，不再局(ju)限于(yu)中小型(xing)(xing)(xing)工程(cheng)，也已应(ying)用(yong)于(yu)大(da)(da)（2）型(xing)(xing)(xing)工程(cheng)的(de)(de) 1 级坝和大(da)(da)（1）型(xing)(xing)(xing)工程(cheng)中，如四川(chuan)田家湾梯级水电站任宗海堆石坝为(wei)大(da)(da)(2)型(xing)(xing)(xing)工程(cheng)的(de)(de) 1 级建筑物，山东泰安抽水蓄能工程(cheng)为(wei)大(da)(da)（1）型(xing)(xing)(xing)工程(cheng)。
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