Damu la Geomembrane
Kufotokozera Kwachidule:
- Ma geomembranes omwe amagwiritsidwa ntchito m'madamu osungiramo madzi amapangidwa ndi zinthu za polima, makamaka polyethylene (PE), polyvinyl chloride (PVC), ndi zina zotero. Zidazi zimakhala ndi madzi otsika kwambiri ndipo zimatha kuteteza madzi kuti asalowe. Mwachitsanzo, polyethylene geomembrane imapangidwa kudzera mu polymerization reaction ya ethylene, ndipo kapangidwe kake ka molekyulu ndi kophatikizana kotero kuti mamolekyu amadzi sangathe kudutsamo.
- Ma geomembranes omwe amagwiritsidwa ntchito m'madamu osungiramo madzi amapangidwa ndi zinthu za polima, makamaka polyethylene (PE), polyvinyl chloride (PVC), ndi zina zotero. Zidazi zimakhala ndi madzi otsika kwambiri ndipo zimatha kuteteza madzi kuti asalowe. Mwachitsanzo, polyethylene geomembrane imapangidwa kudzera mu polymerization reaction ya ethylene, ndipo kapangidwe kake ka molekyulu ndi kophatikizana kotero kuti mamolekyu amadzi sangathe kudutsamo.
1.Makhalidwe Antchito
- Anti-seepage Performance:
Uwu ndiye ntchito yofunika kwambiri yama geomembranes poyika madamu osungira. Ma geomembranes apamwamba kwambiri amatha kukhala ndi ma permeability coefficient kufika 10⁻¹² - 10⁻¹³ cm/s, pafupifupi kutsekereza njira yamadzi. Poyerekeza ndi dongo lachikhalidwe la anti-seepage wosanjikiza, zotsatira zake zotsutsa-seepage ndizodabwitsa kwambiri. Mwachitsanzo, pansi pa kupanikizika kwa mutu womwewo wa madzi, kuchuluka kwa madzi omwe amalowa mu geomembrane ndi kachigawo kakang'ono chabe kameneka kudzera mu dongo lotsutsa-seepage layer. - Anti-puncture Performance:
Pogwiritsa ntchito ma geomembranes pamadamu osungira, amatha kubowoleredwa ndi zinthu zakuthwa monga miyala ndi nthambi mkati mwa damulo. Ma geomembranes abwino ali ndi mphamvu zotsutsana ndi zoboola. Mwachitsanzo, ma geomembranes ena ophatikizika amakhala ndi zigawo zamkati zolimbitsa ulusi zomwe zimatha kukana kubowola. Nthawi zambiri, mphamvu yotsutsa-puncture ya geomembranes oyenerera imatha kufika ku 300 - 600N, kuonetsetsa kuti sichidzawonongeka mosavuta m'malo ovuta a thupi la damu. - Kukana Kukalamba:
Popeza madamu osungira amakhala ndi moyo wautali wautumiki, ma geomembranes ayenera kukhala ndi kukana kukalamba. Mankhwala oletsa kukalamba amawonjezeredwa panthawi yopanga geomembranes, zomwe zimawathandiza kuti azikhala okhazikika kwa nthawi yaitali chifukwa cha zinthu zachilengedwe monga kuwala kwa ultraviolet ndi kusintha kwa kutentha. Mwachitsanzo, ma geomembranes okonzedwa ndi mapangidwe apadera ndi luso amatha kukhala ndi moyo wautumiki wa zaka 30 - 50 kunja. - Kusinthasintha kwa Deformation:
Damuli likhala ndi zopindika zina monga kukhazikika ndi kusamutsidwa panthawi yosungira madzi. Ma geomembranes amatha kusinthira ku zopindika zotere popanda kusweka. Mwachitsanzo, amatha kutambasula ndi kupindika pang'onopang'ono pamodzi ndi kukhazikika kwa thupi la damu. Mphamvu zawo zokhazikika zimatha kufika 10 - 30MPa, zomwe zimawathandiza kuti athe kupirira kupsinjika komwe kumachitika chifukwa cha kupunduka kwa thupi la damu.
kness molingana ndi zosowa za polojekiti. Makulidwe a geomembrane nthawi zambiri amakhala 0.3mm mpaka 2.0mm.
- Kusawotchera: Onetsetsani kuti geomembrane ili ndi kuthekera kwabwino kuti madzi a munthaka asalowe mu polojekiti.
2.Mfundo Zofunika Zomangamanga
- Chithandizo Chachiyambi:
Musanayike ma geomembranes, maziko a damu ayenera kukhala athyathyathya komanso olimba. Zinthu zakuthwa, udzu, dothi lotayirira ndi miyala yomwe ili pamwamba pake iyenera kuchotsedwa. Mwachitsanzo, cholakwika cha flatness cha maziko nthawi zambiri chimayenera kuwongoleredwa mkati mwa ± 2cm. Izi zingalepheretse geomembrane kuti zisawonongeke ndikuwonetsetsa kuyanjana kwabwino pakati pa geomembrane ndi maziko kuti ntchito yake yotsutsa-seepage ikhale yogwira ntchito. - Njira Yoyakira:
Ma geomembranes nthawi zambiri amaphatikizana ndi kuwotcherera kapena kulumikiza. Pamene kuwotcherera, m'pofunika kuonetsetsa kuti kuwotcherera kutentha, liwiro ndi kuthamanga ndi koyenera. Mwachitsanzo, kwa kutentha weld geomembranes, kutentha kuwotcherera zambiri pakati 200 - 300 °C, liwiro kuwotcherera ndi za 0.2 - 0.5m/mphindi, ndi kuwotcherera kuthamanga ndi pakati 0.1 - 0.3MPa kuonetsetsa kuwotcherera khalidwe ndi kupewa. mavuto otuluka chifukwa cha kuwotcherera kosakwanira. - Kulumikizana kwa Peripheral:
Kulumikizana kwa geomembranes ndi maziko a madamu, mapiri kumbali zonse za damu, ndi zina zotero pamphepete mwa dziwe ndizofunikira kwambiri. Nthawi zambiri, ngalande zozikika, zotsekera konkriti, ndi zina zotere zidzalandiridwa. Mwachitsanzo, ngalande yozikika yokhala ndi kuya kwa 30 - 50cm imayikidwa pa maziko a damu. Mphepete mwa geomembrane imayikidwa mu ngalande yoyimitsa ndikuyiyika ndi dothi lopangidwa ndi dothi kapena konkire kuti zitsimikizire kuti geomembrane imagwirizanitsidwa mwamphamvu ndi mapangidwe ozungulira ndikuletsa kutuluka kwa peripheral.
3.Kusamalira ndi Kuyendera
- Kukonza Nthawi Zonse:
M'pofunika kufufuza nthawi zonse ngati pali zowonongeka, misozi, punctures, etc. pamwamba pa geomembrane. Mwachitsanzo, panthawi ya ntchito ya damu, ogwira ntchito yokonza damu amatha kuyang'ana kamodzi pamwezi, kuyang'ana kuyang'ana geomembrane m'madera omwe madzi amasintha pafupipafupi komanso madera omwe ali ndi mabwinja akuluakulu. - Njira Zoyendera:
Njira zoyesera zosawononga zitha kutengedwa, monga njira yoyesera ya spark. Mwanjira iyi, voteji inayake imayikidwa pamwamba pa geomembrane. Pakawonongeka geomembrane, zonyezimira zidzapangidwa, kuti mfundo zowonongeka zitha kupezeka mwachangu. Kuphatikiza apo, palinso njira yoyesera vacuum. Malo otsekedwa amapangidwa pakati pa geomembrane ndi chipangizo choyesera, ndipo kukhalapo kwa kutayikira mu geomembrane kumayesedwa powona kusintha kwa digiri ya vacuum.
Mankhwala magawo
