土工膜铺设过程中应当对土工膜的变形问题进行
在水利工程中使用复合土(tu)工膜(mo)的最(zui)主要功能是提高工程整体(ti)的防渗效果。从这一角度上来说，土(tu)工膜(mo)的搭接工作是非(fei)常重要的。
结(jie)合(he)复合(he)土工(gong)膜(mo)的实(shi)际性能来(lai)看，要(yao)求对其(qi)焊接环(huan)节进(jin)行严(yan)格(ge)控制，尽量在温度(du)高、湿度(du)低的环(huan)境下展开(kai)作业(ye)。土工(gong)膜(mo)铺设前(qian)还需要(yao)安排(pai)专(zhuan)人对其(qi)完整性进(jin)行检查，及(ji)时针对土工(gong)膜(mo)表面存在的褶(zhe)皱以及(ji)撕裂问(wen)题进(jin)行处(chu)理，同时对表面杂物进(jin)行彻(che)底清除。
在水(shui)利工(gong)(gong)程(cheng)(cheng)施工(gong)(gong)中(zhong)，通过自(zi)卸式汽(qi)车将工(gong)(gong)程(cheng)(cheng)施工(gong)(gong)所(suo)需(xu)的土工(gong)(gong)膜运(yun)输(shu)至(zhi)施工(gong)(gong)现(xian)场，汽(qi)车基本运(yun)输(shu)量为20.0t，运(yun)输(shu)期间需(xu)要采取(qu)一次性自(zi)上而下的滚(gun)铺方式。铺设过程(cheng)(cheng)中(zhong)应当对(dui)土工(gong)(gong)膜的变形问(wen)题(ti)进行控制，遵循张弛有度的工(gong)(gong)作(zuo)原则，避(bi)免土工(gong)(gong)膜的受力出现(xian)失衡问(wen)题(ti)。
同(tong)时(shi)(shi)，针对铺(pu)(pu)设期间恶(e)劣的气候条件，还需(xu)要预先(xian)做好防护工(gong)(gong)(gong)(gong)作。本工(gong)(gong)(gong)(gong)程土(tu)(tu)工(gong)(gong)(gong)(gong)膜铺(pu)(pu)设期间风力较(jiao)大(da)，再(zai)加上土(tu)(tu)工(gong)(gong)(gong)(gong)膜自(zi)身(shen)较(jiao)为(wei)轻薄(bo)，因此容易被(bei)大(da)风吹起。为(wei)了避免此类问题的发生，在保护层未(wei)铺(pu)(pu)好前不宜进行大(da)面积的铺(pu)(pu)设工(gong)(gong)(gong)(gong)作。同(tong)时(shi)(shi)，坝坡区域土(tu)(tu)工(gong)(gong)(gong)(gong)膜铺(pu)(pu)设时(shi)(shi)需(xu)要预先(xian)留(liu)有一定的锚(mao)固长度，将(jiang)其锚(mao)固于混凝土(tu)(tu)或周边浆砌石结(jie)构内，以(yi)达到(dao)理想的稳固效果(guo)。
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