防渗型复合土工膜在疏浚环保中怎样不被风浪破坏？

土工复合材料指用于拦泥围护的防渗型复合土工膜。考虑到风浪荷载的作用，为避免选用材料强度较低时遭受风浪破坏，造成二次复建，所以对选用材料的安全系数要求较高。

 ①选用材(cai)(cai)料要(yao)(yao)求土(tu)工织物采用长丝(si)土(tu)工布，单位(wei)面积(ji)质(zhi)量(liang)为(wei)100g/m2，材(cai)(cai)质(zhi)为(wei)涤纶(lun)长丝(si)；土(tu)工膜要(yao)(yao)求厚(hou)度为(wei)0.25mm，单位(wei)面积(ji)质(zhi)量(liang)为(wei)350g/m2，材(cai)(cai)质(zhi)为(wei)PE。土(tu)工复合材(cai)(cai)料的性能指(zhi)标应达到表1要(yao)(yao)求。

②土工(gong)复合材料的拼接(jie)

拼接(jie)(jie)前材(cai)料检(jian)验(yan)：复合材(cai)料拼接(jie)(jie)前先进(jin)(jin)行外观检(jian)查，对(dui)其(qi)物(wu)理力学(xue)性(xing)能和耐久性(xing)能进(jin)(jin)行抽(chou)(chou)样检(jian)查，检(jian)查合格后，方(fang)能进(jin)(jin)行拼接(jie)(jie)施(shi)工(gong)(gong)(gong)(gong)。拼接(jie)(jie)缝(feng)(feng)施(shi)工(gong)(gong)(gong)(gong)：土(tu)工(gong)(gong)(gong)(gong)复合材(cai)料的拼接(jie)(jie)方(fang)式及(ji)搭接(jie)(jie)长度要满(man)足(zu)其(qi)强(qiang)度和非透(tou)水性(xing)不(bu)低于原(yuan)布面。该工(gong)(gong)(gong)(gong)程(cheng)土(tu)工(gong)(gong)(gong)(gong)复合材(cai)料采用缝(feng)(feng)接(jie)(jie)方(fang)式，复合材(cai)料缝(feng)(feng)接(jie)(jie)前先进(jin)(jin)行缝(feng)(feng)接(jie)(jie)设备的比较、缝(feng)(feng)合细(xi)线(xian)的抽(chou)(chou)样检(jian)查，并做(zuo)缝(feng)(feng)接(jie)(jie)后的抗拉(la)强(qiang)度、延(yan)伸率及(ji)施(shi)工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)艺(yi)等项的试验(yan)。试验(yan)完(wan)成后，将(jiang)试验(yan)成果报送监理工(gong)(gong)(gong)(gong)程(cheng)师，经监理工(gong)(gong)(gong)(gong)程(cheng)师批(pi)准后才(cai)能进(jin)(jin)行缝(feng)(feng)接(jie)(jie)施(shi)工(gong)(gong)(gong)(gong)。