土工膜應(yīng)用非常廣泛，施工中遇到問題如何解決也是個(gè)問題。土工土工膜是目前垃圾衛(wèi)生填埋場應(yīng)用**廣泛的土工膜,它防水質(zhì)感好，具有很強(qiáng)的耐久性。不易腐蝕！

　　土工膜熱脹冷縮變形較大，因此在施工中應(yīng)留出材料的熱脹冷縮變形伸縮量。土工膜當(dāng)天鋪設(shè)當(dāng)天完成，盡量減少皺褶及拖移，同時(shí)不宜拉得過緊，否則會因局部變形而產(chǎn)生的應(yīng)力過大，造成土工膜破壞。

　　在滲濾液碎石導(dǎo)排層施工過程中對 土工膜的保護(hù)問題。滲濾液導(dǎo)排層一般選用卵石或碎石等材料，厚度不應(yīng)小于30cm，由于垃圾填埋區(qū)面積大，碎石攤鋪的工程量非常大，留出足夠的空間給鋪設(shè)場地對實(shí)施過程有很大的作用.

    土工膜是在薄膜的一側(cè)或兩側(cè)貼上土工布，形成復(fù)合土工膜。其形式有一布一膜、二布一膜、兩膜一布等。

　　土工布作為土工膜的保護(hù)層，使保護(hù)防滲層不受損壞。為減少紫外線照射，增加抗老化性能，**好采用埋入法鋪設(shè)。

　　施工中，首先要用料徑較小的砂土或粘土找平基面，然后再鋪設(shè)土工膜。土工膜不要繃得太緊，兩端埋入土體部分呈波紋狀，**后在所鋪的土工膜上用細(xì)砂或粘土鋪一層10cm左右過渡層。砌上20-30cm塊石（或砼預(yù)制塊）作防沖保護(hù)層。施工時(shí)，應(yīng)盡力避免石塊直接砸在土工膜上，**好是邊鋪膜邊進(jìn)行保護(hù)層的施工。復(fù)合土工膜與周邊結(jié)構(gòu)物連接應(yīng)采用膨脹螺栓和鋼板壓條錨固，連接部位要涂刷乳化瀝青（厚2mm）粘接，以防該處發(fā)生滲漏。

    Geomembrane is widely used, the problem how to solve is a problem in the construction. Earthwork the municipal solid waste sanitary landfill geomembrane is the most widely used geomembrane, waterproof and simple sense is good, it has a strong durability. Not easy to corrosion.

   Geomembrane heat bilges cold shrink deformation is bigger, so should be set aside in the construction material of the heat bilges cold shrink deformation expansion amount. Geomembrane laying on the day of the finish that day, try to reduce wrinkles and drag to move, at the same time shoulds not be too tight, otherwise it will caused by local deformation stress is too large, geomembrane damage.

   In leachate lithotripsy guide line layer of geomembrane during the construction of protection. Leachate guide line layer generally choose pebble or materials such as gravel, thickness should be not less than 30 cm, due to the large area ? landfill area