I-Shenzhen sesinye sezixeko ezininzi zaseTshayina ezikwingoma ekhawulezayo yokutshintsha izinto. Akunjalo ngokungalindelekanga, ukukhula ngokukhawuleza kwemizi-mveliso kunye neendawo zokuhlala kudale imicelimngeni emininzi yobulunga bokusingqongileyo. Indawo yokulahla inkunkuma yaseHong Hua Ling yinxalenye ekhethekileyo yophuhliso lwaseShenzhen, kuba indawo yokulahla inkunkuma ayibonisi kuphela imingeni yendlela yenkunkuma yangaphambili yesixeko kodwa indlela ikamva layo elikhuselwa ngayo.
I-Hong Hua Ling isebenze iminyaka, iyamkela iindidi ezininzi zenkunkuma, kuquka neentlobo zenkunkuma ezithathwa njengobuthathaka (umzekelo, inkunkuma yonyango). Ukuze kulungiswe le ndlela yakudala, kwafuneka kwandiswe namhlanje.
Uyilo olwalandelayo lwe-140,000m2 lwendawo yokulahla inkunkuma yenze ukuba isiza sikwazi ukuphatha phantse isiqingatha sayo yonke inkunkuma yokulahlwa kwendawo yaseShenzhen's Longgang, kuquka nokwamkela iitoni ezili-1,600 zenkunkuma yonke imihla.
UKWANDISA KWENDAWO YOKUGCWALISA INDAWO ESESHENZHEN
Inkqubo eyandisiweyo yokwaleka kwendawo ekuqaleni yayiyilwe inesiseko esinemigca emibini, kodwa uhlalutyo lwejoloji lwafumanisa ukuba umaleko wodongwe okhoyo oyi-2.3m – 5.9m onokungena okuncinci unokusebenza njengomqobo wesibini. Umgca wokuqala, nangona kunjalo, wawufuneka ukuba ube sisisombululo esikumgangatho ophezulu we-geosynthetic.
I-HDPE geomembrane yaxelwa, kunye ne-1.5mm kunye ne-2.0mm geomembranes engqingqwa ekhethiweyo ukuze isetyenziswe kwiindawo ezahlukeneyo. Iinjineli zeprojekthi zisebenzise izikhokelo ezininzi ekwenzeni izigqibo zazo eziphathekayo kunye nobukhulu, kubandakanywa iSikhokelo se-CJ/T-234 se-High Density Polyethylene (HDPE) yeNdawo zokuGcina inkunkuma kunye noMgangatho we-GB16889-2008 woLawulo loNgcoliseko kwiNdawo yokuLahlwa kweNkunkuma kaMasipala.
I-HDPE geomembranes yasetyenziswa kuyo yonke indawo yokwandisa itiphu.
Kwisiseko, i-line egudileyo yakhethwa ngelixa i-geomembrane yendawo eboshiweyo, eyakhiweyo ikhethwe kwiindawo ezithambekileyo phezu kwe-co-extruded okanye i-sprayed-on structured surface geomembrane.
Iingenelo ze-interface friction performance ia ngenxa yesakhiwo kunye ne-homogeneousness yomphezulu we-membrane. Ukusetyenziswa kwe-geomembrane ye-HDPE ikwabonelele ngeenzuzo zokusebenza kunye nokwakhiwa kweqela lobunjineli boyilo elifunayo: ukuxhathisa ukunyanzeliswa kwe-stress-crack, i-Melt Flow Rate ephezulu ukwenzela ukuba ukusebenza kwe-welding enamandla, ukuchasana kweekhemikhali okugqwesileyo, njl.
Umnatha wokuhambisa amanzi wasetyenziswa njengomaleko wokubona ukuvuza nanjengomaleko wokuhambisa amanzi ngaphantsi komdibaniso. Ezi maleko zokuhambisa amanzi zinomsebenzi ombini wokukhusela i-HDPE geomembrane kumonakalo onokwenzeka wokugqobhoza. Ukhuseleko olongezelelekileyo lubonelelwe ngomaleko owomeleleyo we-geotextile ophakathi kwe-HDPE geomembrane kunye nodongwe olungqindilili.
IINGXAKI EZIZODWA
Imisebenzi yolwakhiwo kwiSitiphu saseHong Hua Ling senziwa kwishedyuli engqongqo kakhulu, ngenxa yoxinzelelo lommandla okhula ngokukhawuleza ukuba ube nokwandiswa okukhulu kwetiphu ngokukhawuleza.
Imisebenzi yokuqala yenziwa nge-50,000m2 ye-geomembrane kuqala, emva koko i-250,000m2 eseleyo ye-geomembranes efunekayo yasetyenziswa kamva.
Oku kudale inqaku lokulumkisa apho umenzi owahlukileyo wemixube yeHDPE kufuneka idityaniswe kunye. Isivumelwano kwi-Melt Flow Rate sasibaluleke kakhulu, kwaye uhlalutyo lufumene i-MFRs yezinto eziphathekayo ukuba zifane ngokwaneleyo ukukhusela iipaneli zokuqhawula. Ngaphezu koko, iimvavanyo zoxinzelelo lomoya zenziwa kumalungu ephaneli ukuqinisekisa ukuqina kwe-weld.
Omnye ummandla apho unokontraka kunye nomcebisi kuye kwafuneka banike ingqwalasela eyongezelelweyo ithathela ingqalelo indlela yokwakha esetyenziswa kunye namathambeka agobileyo. Uhlahlo lwabiwo-mali lwalunqongophele, nto leyo ethetha ukulawulwa ngokungqongqo kwezinto. Iqela lifumene ukuba ukwakha i-slope kunye neepaneli ezihambelanayo kunye ne-slope kunokusindisa kwizinto eziphathekayo, njengoko ezinye ii-rolls ezinqunywe zingasetyenziselwa kwi-curve enikeziweyo iipaneli zinqunywe kububanzi obufutshane kunye nokuchithwa okuncinci kwi-cut cut. Icala elibi lale ndlela yayikukuba ifuna ukuwelda okukhulu kwemathiriyeli, kodwa ezi welds zonke zajongwa kwaye zaqinisekiswa liqela lolwakhiwo kunye ne-CQA ukuqinisekisa umgangatho we-weld.
Ukwandiswa kweNdawo yokulahla inkunkuma yaseHong Hua Ling kuya kubonelela ngomthamo opheleleyo we-2,080,000 yeetoni zokugcina inkunkuma.
Iindaba ezivela: https://www.geosynthetica.net/landfill-expansion-shenzhen-hdpe-geomembrane/
Ixesha lokuposa: Sep-28-2022