HDPE土工膜施工准备阶段的质量控制措施

1)土(tu)(tu)(tu)工(gong)(gong)(gong)膜(mo)本身(shen)的(de)(de)(de)(de)生(sheng)(sheng)产(chan)(chan)质(zhi)量(liang)(liang)将对其施(shi)工(gong)(gong)(gong)效果(guo)产(chan)(chan)生(sheng)(sheng)重(zhong)要影响(xiang)。考虑(lv)到本工(gong)(gong)(gong)程案例的(de)(de)(de)(de)特殊性(xing)，为防止(zhi)土(tu)(tu)(tu)工(gong)(gong)(gong)膜(mo)生(sheng)(sheng)产(chan)(chan)质(zhi)量(liang)(liang)对垃(la)圾填埋场功能造(zao)成影响(xiang)，施(shi)工(gong)(gong)(gong)方选择了(le)信誉较好的(de)(de)(de)(de)商(shang)家进(jin)(jin)行(xing)供(gong)(gong)货以(yi)(yi)完全确保土(tu)(tu)(tu)工(gong)(gong)(gong)膜(mo)的(de)(de)(de)(de)生(sheng)(sheng)产(chan)(chan)质(zhi)量(liang)(liang)。在(zai)(zai)(zai)土(tu)(tu)(tu)工(gong)(gong)(gong)膜(mo)进(jin)(jin)场前，对高密度聚乙烯树脂材料进(jin)(jin)行(xing)了(le)严格检测并要求(qiu)厂家在(zai)(zai)(zai)供(gong)(gong)货时(shi)提供(gong)(gong)合格证以(yi)(yi)及使用说(shuo)明书。除此以(yi)(yi)外，采(cai)购人(ren)员也(ye)对厂家提供(gong)(gong)的(de)(de)(de)(de)土(tu)(tu)(tu)工(gong)(gong)(gong)膜(mo)材料进(jin)(jin)行(xing)详细的(de)(de)(de)(de)外观(guan)检查，避免出现针眼等明显的(de)(de)(de)(de)缺(que)陷问题，同时(shi)也(ye)要确保土(tu)(tu)(tu)工(gong)(gong)(gong)膜(mo)在(zai)(zai)(zai)使用期限范围(wei)以(yi)(yi)内，防止(zhi)过(guo)(guo)期产(chan)(chan)品(pin)进(jin)(jin)入(ru)(ru)施(shi)工(gong)(gong)(gong)场地。经(jing)检验各项指标(biao)均达到设(she)计(ji)标(biao)准(zhun)和使用要求(qiu)以(yi)(yi)后(hou)(hou)方可(ke)进(jin)(jin)入(ru)(ru)库(ku)房(fang)(fang)。为进(jin)(jin)一步提升土(tu)(tu)(tu)工(gong)(gong)(gong)膜(mo)质(zhi)量(liang)(liang)的(de)(de)(de)(de)可(ke)靠性(xing)，施(shi)工(gong)(gong)(gong)人(ren)员特别制定了(le)详细方案对库(ku)房(fang)(fang)中的(de)(de)(de)(de)材料进(jin)(jin)行(xing)抽样检查，即对其性(xing)能进(jin)(jin)行(xing)更加详细的(de)(de)(de)(de)检测并做好检测过(guo)(guo)程和结果(guo)的(de)(de)(de)(de)记录(lu)工(gong)(gong)(gong)作。最(zui)后(hou)(hou)，施(shi)工(gong)(gong)(gong)人(ren)员还针对土(tu)(tu)(tu)工(gong)(gong)(gong)膜(mo)开展了(le)小范围(wei)的(de)(de)(de)(de)现场试验工(gong)(gong)(gong)作，在(zai)(zai)(zai)其达到要求(qiu)后(hou)(hou)才(cai)进(jin)(jin)行(xing)大范围(wei)施(shi)工(gong)(gong)(gong)。

2)一般而(er)言土(tu)工(gong)(gong)膜(mo)材质相对紧凑(cou)，具(ju)备一定的(de)(de)抗破(po)损性(xing)能(neng)，但是(shi)如果遇到尖(jian)锐物(wu)体(ti)仍然(ran)会(hui)被戳破(po)，从而(er)影响其防(fang)渗透(tou)性(xing)。因此，土(tu)工(gong)(gong)膜(mo)在生产、运(yun)输、搬运(yun)过程中必须十分小心，避(bi)免与其他尖(jian)锐物(wu)体(ti)发生碰(peng)撞接触。另外，待铺设的(de)(de)垃圾填(tian)埋场(chang)场(chang)地(di)(di)不(bu)平(ping)整，不(bu)仅会(hui)增(zeng)加土(tu)工(gong)(gong)膜(mo)施(shi)(shi)工(gong)(gong)过程的(de)(de)难度，也会(hui)制约施(shi)(shi)工(gong)(gong)质量的(de)(de)提升。由于本案例山(shan)谷地(di)(di)形的(de)(de)特殊性(xing)，施(shi)(shi)工(gong)(gong)方在对土(tu)工(gong)(gong)膜(mo)进行正式施(shi)(shi)工(gong)(gong)前对场(chang)地(di)(di)进行了平(ping)整处理，以确(que)保其平(ping)整度达(da)到相关规(gui)范标准后再(zai)进行土(tu)工(gong)(gong)膜(mo)施(shi)(shi)工(gong)(gong)工(gong)(gong)序。

3)土工(gong)(gong)膜在具体剪裁操作(zuo)过程(cheng)中(zhong)需要充分(fen)结合现场情况并在完成裁剪工(gong)(gong)作(zuo)后将其(qi)卷起待用。本案例的(de)土工(gong)(gong)膜宽度(du)设(she)置(zhi)在6m～8m范围内，在铺设(she)过程(cheng)中(zhong)预留了约10cm的(de)宽度(du)进行焊接。