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復合土工膜

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復合土工膜

名稱：復合土工膜

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復(fu)(fu)合(he)(he)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)在(zai)(zai)(zai)(zai)渠道防(fang)(fang)滲(shen)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)程(cheng)中(zhong)(zhong)的(de)(de)(de)(de)(de)應(ying)用(yong)(yong)(yong)：近年來，土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)合(he)(he)成(cheng)材(cai)料(liao)在(zai)(zai)(zai)(zai)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)木工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)程(cheng)，尤其(qi)是(shi)在(zai)(zai)(zai)(zai)防(fang)(fang)洪搶險工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)程(cheng)中(zhong)(zhong)的(de)(de)(de)(de)(de)大(da)(da)量應(ying)用(yong)(yong)(yong)及其(qi)成(cheng)效(xiao)，引起了廣大(da)(da)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)程(cheng)技(ji)術(shu)人員(yuan)的(de)(de)(de)(de)(de)高度(du)重視。對(dui)于(yu)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)合(he)(he)成(cheng)材(cai)料(liao)的(de)(de)(de)(de)(de)應(ying)用(yong)(yong)(yong)技(ji)術(shu)，國(guo)家從防(fang)(fang)滲(shen)、反濾、排(pai)水、加(jia)筋、防(fang)(fang)護等(deng)方(fang)面，提出了規范性(xing)技(ji)術(shu)要(yao)求(qiu)，大(da)(da)大(da)(da)加(jia)快了新材(cai)料(liao)的(de)(de)(de)(de)(de)推(tui)廣應(ying)用(yong)(yong)(yong)步伐。該材(cai)料(liao)在(zai)(zai)(zai)(zai)灌(guan)區渠道防(fang)(fang)滲(shen)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)程(cheng)中(zhong)(zhong)得到廣泛應(ying)用(yong)(yong)(yong)，結合(he)(he)施工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)實(shi)踐，淺談復(fu)(fu)合(he)(he)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)的(de)(de)(de)(de)(de)應(ying)用(yong)(yong)(yong)技(ji)術(shu)。    1、復(fu)(fu)合(he)(he)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)性(xing)能(neng)(neng)  　 復(fu)(fu)合(he)(he)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)（復(fu)(fu)合(he)(he)防(fang)(fang)滲(shen)膜(mo)(mo)(mo)）分為一(yi)布一(yi)膜(mo)(mo)(mo)和(he)兩布一(yi)膜(mo)(mo)(mo)，寬幅(fu)4-6m，重量為200—1500g/平(ping)方(fang)米，抗(kang)拉、抗(kang)撕裂、頂(ding)破等(deng)物(wu)(wu)理(li)力(li)學性(xing)能(neng)(neng)指標高，產品具有強(qiang)度(du)高，延伸(shen)性(xing)能(neng)(neng)較好(hao)(hao)(hao)(hao)，變形模量大(da)(da)，耐(nai)酸堿、抗(kang)腐蝕，耐(nai)老(lao)(lao)(lao)化，防(fang)(fang)滲(shen)性(xing)能(neng)(neng)好(hao)(hao)(hao)(hao)等(deng)特(te)點。能(neng)(neng)滿足(zu)水利、市(shi)政(zheng)、建(jian)(jian)(jian)筑、交通，地鐵、隧道、工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)程(cheng)建(jian)(jian)(jian)設(she)(she)中(zhong)(zhong)的(de)(de)(de)(de)(de)防(fang)(fang)滲(shen)，隔離，補(bu)強(qiang)，防(fang)(fang)裂加(jia)固(gu)等(deng)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)木工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)程(cheng)需要(yao)。由于(yu)其(qi)選用(yong)(yong)(yong)高分子材(cai)料(liao)且生產工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)藝中(zhong)(zhong)添加(jia)了防(fang)(fang)老(lao)(lao)(lao)化劑(ji)，故(gu)可在(zai)(zai)(zai)(zai)非常(chang)規溫度(du)環境(jing)中(zhong)(zhong)使用(yong)(yong)(yong)。常(chang)用(yong)(yong)(yong)于(yu)堤(di)壩、排(pai)水溝渠的(de)(de)(de)(de)(de)防(fang)(fang)滲(shen)處(chu)(chu)理(li)，以(yi)及廢料(liao)場(chang)的(de)(de)(de)(de)(de)防(fang)(fang)污(wu)處(chu)(chu)理(li)。  　 2.復(fu)(fu)合(he)(he)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)施工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)  　 復(fu)(fu)合(he)(he)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)是(shi)在(zai)(zai)(zai)(zai)薄膜(mo)(mo)(mo)的(de)(de)(de)(de)(de)一(yi)側或(huo)兩側貼(tie)上(shang)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)布，形成(cheng)復(fu)(fu)合(he)(he)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)。其(qi)形式有一(yi)布一(yi)膜(mo)(mo)(mo)、二布一(yi)膜(mo)(mo)(mo)、兩膜(mo)(mo)(mo)一(yi)布等(deng)。  　 土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)布作(zuo)為土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)的(de)(de)(de)(de)(de)保(bao)護層(ceng)，使保(bao)護防(fang)(fang)滲(shen)層(ceng)不(bu)(bu)受(shou)損壞(huai)。為減少(shao)紫外線照(zhao)射，增(zeng)加(jia)抗(kang)老(lao)(lao)(lao)化性(xing)能(neng)(neng)，最(zui)好(hao)(hao)(hao)(hao)采用(yong)(yong)(yong)埋入(ru)法鋪(pu)設(she)(she)。  　 施工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)中(zhong)(zhong)，首先要(yao)用(yong)(yong)(yong)料(liao)徑較小的(de)(de)(de)(de)(de)砂(sha)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)或(huo)粘(zhan)(zhan)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)找平(ping)基面，然后(hou)再(zai)鋪(pu)設(she)(she)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)。土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)不(bu)(bu)要(yao)繃得太(tai)(tai)緊，兩端埋入(ru)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)體部(bu)分呈(cheng)波(bo)紋狀，最(zui)后(hou)在(zai)(zai)(zai)(zai)所鋪(pu)的(de)(de)(de)(de)(de)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)上(shang)用(yong)(yong)(yong)細砂(sha)或(huo)粘(zhan)(zhan)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)鋪(pu)一(yi)層(ceng)10cm左右過度(du)層(ceng)。砌上(shang)20-30cm塊石(shi)（或(huo)砼預制塊）作(zuo)防(fang)(fang)沖保(bao)護層(ceng)。施工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)時(shi)(shi)，應(ying)盡力(li)避免石(shi)塊直接(jie)(jie)(jie)砸在(zai)(zai)(zai)(zai)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)上(shang)，最(zui)好(hao)(hao)(hao)(hao)是(shi)邊鋪(pu)膜(mo)(mo)(mo)邊進行保(bao)護層(ceng)的(de)(de)(de)(de)(de)施工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)。復(fu)(fu)合(he)(he)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)與周邊結構物(wu)(wu)連接(jie)(jie)(jie)應(ying)采用(yong)(yong)(yong)膨脹(zhang)螺栓和(he)鋼板壓條錨固(gu)，連接(jie)(jie)(jie)部(bu)位要(yao)涂(tu)刷乳化瀝(li)青（厚2mm）粘(zhan)(zhan)接(jie)(jie)(jie)，以(yi)防(fang)(fang)該處(chu)(chu)發生滲(shen)漏。  　 復(fu)(fu)合(he)(he)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)的(de)(de)(de)(de)(de)接(jie)(jie)(jie)縫(feng)處(chu)(chu)理(li)是(shi)一(yi)個關鍵工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)序，直接(jie)(jie)(jie)影響防(fang)(fang)滲(shen)效(xiao)果(guo)。一(yi)般接(jie)(jie)(jie)縫(feng)方(fang)式有：①搭接(jie)(jie)(jie)：搭接(jie)(jie)(jie)寬度(du)宜(yi)大(da)(da)于(yu)15cm；②熱(re)焊：宜(yi)于(yu)稍厚的(de)(de)(de)(de)(de)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)基材(cai)，焊縫(feng)搭接(jie)(jie)(jie)寬度(du)不(bu)(bu)小于(yu)5CM.(不(bu)(bu)推(tui)薦(jian)膠(jiao)接(jie)(jie)(jie),長時(shi)(shi)間水浸泡(pao)易開膠(jiao),防(fang)(fang)滲(shen)效(xiao)果(guo)差(cha).)   　 根據多年實(shi)踐證明，土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)厚度(du)不(bu)(bu)小于(yu)0.25mm，太(tai)(tai)薄可能(neng)(neng)產生氣孔，且易在(zai)(zai)(zai)(zai)施工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)中(zhong)(zhong)受(shou)損而降低防(fang)(fang)滲(shen)效(xiao)果(guo)。土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)施工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)中(zhong)(zhong)，特(te)別要(yao)注意做到鋪(pu)設(she)(she)不(bu)(bu)宜(yi)過緊，不(bu)(bu)得打(da)皺，拼(pin)(pin)接(jie)(jie)(jie)要(yao)牢固(gu)。要(yao)嚴(yan)格按(an)技(ji)術(shu)規范施工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)，把好(hao)(hao)(hao)(hao)準備、鋪(pu)設(she)(she)、拼(pin)(pin)接(jie)(jie)(jie)、檢驗和(he)回填等(deng)五道質量關。由于(yu)復(fu)(fu)合(he)(he)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)良好(hao)(hao)(hao)(hao)的(de)(de)(de)(de)(de)防(fang)(fang)滲(shen)效(xiao)果(guo)，目前，寶(bao)雞峽灌(guan)區節水改造與續建(jian)(jian)(jian)配套(tao)項(xiang)目建(jian)(jian)(jian)設(she)(she)中(zhong)(zhong)，大(da)(da)量采用(yong)(yong)(yong)該材(cai)料(liao)，受(shou)到了設(she)(she)計、建(jian)(jian)(jian)設(she)(she)單位的(de)(de)(de)(de)(de)廣泛好(hao)(hao)(hao)(hao)評。<來源于(yu)水資源網,有修改.>  　 復(fu)(fu)合(he)(he)土(tu)(tu)(tu)(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)膜(mo)(mo)(mo)特(te)點: 幅(fu)寬6米，目前國(guo)內最(zui)寬復(fu)(fu)合(he)(he)膜(mo)(mo)(mo)   　 抗(kang)穿刺(ci)強(qiang)度(du)高，摩擦系數大(da)(da)   　 耐(nai)老(lao)(lao)(lao)化性(xing)能(neng)(neng)好(hao)(hao)(hao)(hao)，適應(ying)環境(jing)溫度(du)范圍(wei)大(da)(da)   　 優良的(de)(de)(de)(de)(de)抗(kang)排(pai)水性(xing)能(neng)(neng)   　 適用(yong)(yong)(yong)于(yu)水利、化工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)、建(jian)(jian)(jian)筑、交通、地鐵、隧道、垃圾處(chu)(chu)理(li)場(chang)等(deng)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)(gong)程(cheng)  主要(yao)技(ji)術(shu)指標： 400 500 600 700 800 900 1000 備 注 0.25～0.35 0.3～0.5   　 斷裂強(qiang)度(du)KN/m 5 75 100 120 140 160 180   　 CBR頂(ding)破強(qiang)力(li)KN 11 15 19 22 25 28 30 縱橫(heng)向   　 撕破強(qiang)力(li)KN 0.15 0.25 0.32 0.40 0.48 0.56 0.62 縱橫(heng)向

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