复合型土工膜在水利工程中的应用及铺设注意事项

复合(he)型土(tu)工(gong)(gong)(gong)膜是(shi)将土(tu)工(gong)(gong)(gong)膜与土(tu)工(gong)(gong)(gong)织物复合(he)而(er)(er)成的产(chan)品，其平铺于坝(ba)坡，土(tu)工(gong)(gong)(gong)膜是(shi)一种基本非透水(shui)性材(cai)料(liao)，起防渗作用(yong)，保(bao)护土(tu)工(gong)(gong)(gong)膜免(mian)于运输及(ji)施工(gong)(gong)(gong)过程(cheng)(cheng)中(zhong)的外力(li)损坏，同(tong)时提高膜面的摩(mo)擦系(xi)数。复合(he)型土(tu)工(gong)(gong)(gong)膜具有很强(qiang)的生命力(li)，多种性能满足(zu)工(gong)(gong)(gong)程(cheng)(cheng)要(yao)(yao)求，而(er)(er)且因其质量(liang)轻、施工(gong)(gong)(gong)简便、运输方便、价格低廉、原(yuan)料(liao)来(lai)源丰富等特点，在水(shui)利工(gong)(gong)(gong)程(cheng)(cheng)和(he)交通隧道工(gong)(gong)(gong)程(cheng)(cheng)中(zhong)得到了广泛的应用(yong)。该项目(mu)主要(yao)(yao)布置(zhi)在死水(shui)位以上的坝(ba)体防渗加(jia)固。

在(zai)(zai)施工期间，对坝坡的清洁、平整进(jin)行了质量验收，并(bing)要求相关(guan)操(cao)作(zuo)员使用C25混凝土回(hui)填(tian)(tian)锚固。齿(chi)槽(cao)(cao)段(duan)宽(kuan)1.5m，高(gao)0.5m；坝顶锚入防浪(lang)墙底(di)部，保证其符合土工模长(zhang)的要求，在(zai)(zai)沟槽(cao)(cao)内回(hui)填(tian)(tian)混凝土；两旁(pang)挖(wa)一段(duan)，在(zai)(zai)坝体(ti)与(yu)山体(ti)交接处挖(wa)一段(duan)，为底(di)宽(kuan)1.0m，通过顶部宽(kuan)度(du)2.0m、深度(du)1。0m的沟槽(cao)(cao)，将土工膜锚入槽(cao)(cao)内，然后用粘土进(jin)行夯(hang)(hang)填(tian)(tian)和夯(hang)(hang)实。

铺设(she)水坝(ba)时(shi)(shi)，最好能(neng)在(zai)空气(qi)湿度小的(de)(de)地方施(shi)工(gong)(gong)，以(yi)确(que)保(bao)接缝顺畅，提高(gao)施(shi)工(gong)(gong)效率。铺设(she)时(shi)(shi)应(ying)注意(yi)(yi)工(gong)(gong)膜(mo)(mo)与工(gong)(gong)膜(mo)(mo)间的(de)(de)松驰，尽量(liang)保(bao)证(zheng)工(gong)(gong)膜(mo)(mo)与坡面的(de)(de)贴合，避免起皱。与此同时(shi)(shi)，施(shi)工(gong)(gong)人员(yuan)在(zai)进行(xing)铺装时(shi)(shi)，必须注意(yi)(yi)鞋的(de)(de)选择，以(yi)免出现工(gong)(gong)膜(mo)(mo)损坏现象。