施工(gong)(gong)中(zhong)，首先要用(yong)料徑較小(xiao)的砂土(tu)或(huo)(huo)粘土(tu)找(zhao)平基面，然后(hou)(hou)再鋪(pu)設土(tu)工(gong)(gong)膜(mo)。土(tu)工(gong)(gong)膜(mo)不要繃得太緊，兩端埋(mai)入土(tu)體部(bu)分呈波紋狀，最后(hou)(hou)在所鋪(pu)的土(tu)工(gong)(gong)膜(mo)上用(yong)細砂或(huo)(huo)粘土(tu)鋪(pu)一層10cm左右過度(du)層。砌上20-30cm塊(kuai)石(shi)（或(huo)(huo)砼預制塊(kuai)）作防沖保護(hu)層。

施(shi)工(gong)(gong)時，應(ying)(ying)盡力避(bi)免石(shi)塊直接砸在(zai)土(tu)(tu)工(gong)(gong)膜(mo)上，最好是邊鋪膜(mo)邊進(jin)行保護層的施(shi)工(gong)(gong)。復(fu)合土(tu)(tu)工(gong)(gong)膜(mo)與周(zhou)邊結構(gou)物連(lian)接應(ying)(ying)采用膨脹螺栓和鋼板壓條錨固，連(lian)接部(bu)位(wei)要涂刷乳(ru)化瀝青（厚2mm）粘接，以防該處發生滲漏。

土(tu)工(gong)(gong)(gong)膜(mo)(mo)(mo)的接(jie)縫(feng)(feng)處理是一個關鍵工(gong)(gong)(gong)序，直(zhi)接(jie)影(ying)響防滲(shen)(shen)效(xiao)果(guo)。一般接(jie)縫(feng)(feng)方式有：①搭(da)接(jie)：搭(da)接(jie)寬(kuan)(kuan)度宜大(da)于(yu)15cm；②熱焊(han)：宜于(yu)稍厚的土(tu)工(gong)(gong)(gong)膜(mo)(mo)(mo)基(ji)材，焊(han)縫(feng)(feng)搭(da)接(jie)寬(kuan)(kuan)度不小于(yu)5CM。(不推薦(jian)膠(jiao)(jiao)接(jie),長(chang)時間水浸泡易開(kai)膠(jiao)(jiao),防滲(shen)(shen)效(xiao)果(guo)差)根據多年(nian)實踐證明，防滲(shen)(shen)膜(mo)(mo)(mo)厚度不小于(yu)0.25mm，太薄可能產生氣(qi)孔，且易在施工(gong)(gong)(gong)中受損而(er)降低防滲(shen)(shen)效(xiao)果(guo)。土(tu)工(gong)(gong)(gong)膜(mo)(mo)(mo)施工(gong)(gong)(gong)中，特別要(yao)注意(yi)做到鋪設(she)不宜過緊，不得(de)打(da)皺，拼接(jie)要(yao)牢固。