影响PE土工膜焊缝问题的原因确认
通过查看施(shi)工(gong)技术(shu)资料(liao)，发现土工(gong)膜(mo)(mo)施(shi)工(gong)技术(shu)交底(di)(di)记(ji)(ji)录(lu)齐全，岗(gang)前培(pei)训考核记(ji)(ji)录(lu)齐全，施(shi)工(gong)检(jian)测记(ji)(ji)录(lu)资料(liao)按照(zhao)三检(jian)制(zhi)要求(qiu)检(jian)测记(ji)(ji)录(lu)，质量管理(li)制(zhi)度齐全，但是(shi)通过现场查看，对(dui)层间焊接(jie)面清理(li)不彻底(di)(di)，有细砂粒(li)、灰尘、附(fu)着水蒸气等问(wen)题(ti)的(de)奖(jiang)惩(cheng)措施(shi)未严(yan)格(ge)执行(xing)，确定“未进行(xing)土工(gong)膜(mo)(mo)焊接(jie)施(shi)工(gong)技术(shu)交底(di)(di)”、“未岗(gang)前培(pei)训考核”、“焊接(jie)工(gong)序未按三检(jian)制(zhi)检(jian)查记(ji)(ji)录(lu)”为(wei)非要因，“未严(yan)格(ge)执行(xing)质量管理(li)奖(jiang)惩(cheng)制(zhi)度”为(wei)要因。
通过(guo)查(cha)(cha)阅(yue)土工(gong)(gong)膜(mo)施(shi)(shi)工(gong)(gong)专(zhuan)项方(fang)案及施(shi)(shi)工(gong)(gong)日(ri)志，土工(gong)(gong)膜(mo)施(shi)(shi)工(gong)(gong)专(zhuan)项方(fang)案对大风天气(qi)施(shi)(shi)工(gong)(gong)有(you)明(ming)确(que)要(yao)求，禁止大于4级风天气(qi)施(shi)(shi)工(gong)(gong)，并(bing)且查(cha)(cha)看施(shi)(shi)工(gong)(gong)日(ri)志，风力大于4级时，土工(gong)(gong)膜(mo)均未(wei)进行施(shi)(shi)工(gong)(gong)，所以确(que)定“大于4级风天气(qi)施(shi)(shi)工(gong)(gong)”为非要(yao)因(yin)。
不合格焊(han)(han)缝(feng)存在(zai)的主要问(wen)题(ti)是焊(han)(han)缝(feng)弱焊(han)(han)，焊(han)(han)缝(feng)过焊(han)(han)，经测(ce)试焊(han)(han)机温度(du)和速度(du)调节灵敏度(du)不稳定(ding)，工作(zuo)性能不可靠。因此确定(ding)“焊(han)(han)机未维护(hu)、检测(ce)”为要因。
通(tong)过对厂(chang)家(jia)原(yuan)材(cai)料、生(sheng)产线、生(sheng)产的土(tu)工膜抽(chou)检(jian)检(jian)测合格，现(xian)(xian)场查看土(tu)工膜外(wai)观质量良好，土(tu)工膜厚度满足0.5mm，搭(da)接(jie)面无褶皱(zhou)现(xian)(xian)象，所以确(que)定(ding)“厂(chang)家(jia)生(sheng)产偏差”为非(fei)要(yao)因。
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