Site foundation treatment
1. Usati waisa HDPE geomembrane, hwaro hwekugadzika huchaongororwa zvizere pamwe chete nemadhipatimendi akakodzera.Nheyo yekuisa ichave yakasimba uye yakati sandara.Pachave pasina midzi yemiti, marara, matombo, kongiri zvimedu, misoro yekusimbisa, magirazi machipisi uye mamwe marara anogona kukuvadza geomembrane mukati mekudzika kwakadzika kwe25 mm.Shandisa vhiri compactor kubatanidza kubvisa mavanga emota, tsoka uye mabumbu epasi.Pamusoro pezvo, mabulges epasi akakura kupfuura 12mm anozochekerwa kana kupetwa.
2. Kana HDPE geomembrane yakaiswa pane yekumashure, iyo compactness yekumashure haingaite isingasviki 95%.
3.Nheyo yesaiti ichave isina kubuda kwemvura, tsvina, ponding, organic residue uye zvinhu zvinokuvadza zvinogona kukonzera kusvibiswa kwezvakatipoteredza.Kona yechigadziko inofanira kuva yakatsetseka.Kazhinji, arc radius yayo haifanire kunge iri pasi pe500 mm.
Zvido zvehunyanzvi zveHDPE geomembrane kuisirwa.
1. Kuiswa nekunama kweHDPE geomembrane kunofanirwa kuitwa mumamiriro ekunze uko kutonhora kuri pamusoro pe5 ℃ uye simba remhepo riri pasi peGrade 4 pasina kunaya kana chando.
2. Nzira yekuvaka yeHDPE geomembrane ichaitwa nenzira inotevera: geomembrane laying → lapping welding joints → welding → on-site inspection → kugadzirisa → kuongororazve → backfilling.
3. Kuwedzera kwehupamhi hwemajoini pakati pe membrane haifaniri kunge iri pasi pe80mm.Kazhinji, kurongeka kwehurongwa huchave hwakaenzana nehupamhi hwemateru mutsetse, ndiko kuti, hucharongedzerwa pamwe negwara remateru.
4. Panguva yekuiswa kweHDPE geomembrane, makwinya ekugadzira achadziviswa sezvinobvira.Kana uchiisa HDPE geomembrane, iyo yekuwedzera deformation inokonzerwa nekushanduka kwetembiricha ichachengeterwa zvinoenderana nenharaunda yekuchinja tembiricha renji uye nekuita zvinodiwa zveHDPE geomembrane.Pamusoro pezvo, huwandu hwekuwedzera hwe geomembrane huchachengetwa zvinoenderana nenzvimbo yenzvimbo uye nekuisa geomembrane kuti ienderane nekusaenzana kugadzika kwenheyo.
5. Mushure mekunge geomembrane yeHDPE yaiswa, kufamba pamusoro pe membrane uye maturusi ekubata achaderedzwa.Zvinhu zvinogona kukonzera kukuvadza kune HDPE geomembrane hazvizoiswe pa geomembrane kana kutakurwa pa geomembrane kudzivirira kukuvara netsaona kune HDPE membrane.
6. Vose vashandi vari panzvimbo yekuvaka firimu yeHDPE havafaniri kusvuta, kupfeka shangu dzine misumari kana shangu dzakasimba dzakasimba dzakasimba kuti dzifambe pamusoro pefirimu, kana kuita chero basa rinogona kukanganisa firimu isingapindiki.
7. Mushure mokunge geomembrane yeHDPE yaiswa uye musati wekudzivirira wakavharwa, bhegi rejecha re 20-40Kg richaiswa pakona ye membrane yega 2-5m kudzivirira geomembrane kubva kumhepo.
8. HDPE geomembrane ichave yakasikwa uye iri padyo nerutsigiro runotsigira, uye haifaniri kupetwa kana kumiswa mumhepo.
9. Kana geomembrane ichivakwa muzvikamu, chikamu chepamusoro chichavharwa munguva mushure mekuisa, uye nguva yakaonekwa mumhepo haifaniri kudarika mazuva makumi matatu.
Iyo anchoring yeHDPE geomembrane ichaitwa zvinoenderana nedhizaini.Munzvimbo dzine nzvimbo dzakaoma mupurojekiti, chikwata chekuvaka chichakurudzira dzimwe nzira dzekumisa, dzinozoitwa mushure mekuwana kubvumirwa kwechikwata chekugadzira uye chikwata chekutarisa.
HDPE geomembrane welding zvinodiwa:
1. Iyo inopindirana pamusoro peHDPE geomembrane weld ichave isina tsvina, jecha, mvura (kusanganisira dova) uye kumwe kusvibiswa kunokanganisa kunaka kwewelding, uye ichacheneswa panguva yewelding.
2. Pakutanga kwekushongedza zuva rega rega (mangwanani uye mushure mekudya kwemasikati), welding welding inofanira kuitwa panzvimbo yekutanga, uye welding yepamutemo inogona kuitwa chete mushure mekunge yakwanisa.
3. Iyo HDPE geomembrane inofanira kusungirirwa nekaviri track hot-melt welding machine, uye iyo extrusion welding kana inopisa-air gun welding inofanira kushandiswa chete munzvimbo iyo kugadzirisa, kuvhara kana kupisa-kunyunguduka welding machine haigoni kusvika.
4. Panguva yekuvaka, kutonhora kwekushanda uye kukurumidza kwemuchina welding ichagadziriswa uye kudzorwa chero nguva maererano nekupisa uye zvinhu.
5.HDPE firimu paweld ichave yakashongedzwa seyese, uye hapazovi nekunyepedzera kwenhema, kushayikwa welding kana kuwandisa.Iwo akabatanidzwa maviri akaturikidzana eHDPE geomembrane anofanirwa kuve akapfava uye akapfava.
Weld quality control
Nekufambira mberi kwekuvaka, zvinodikanwa kuti utarise mhando yewelding yeHDPE firimu munguva, uye kugadzirisa welding nemhepo inopisa pfuti kana pfuti yepurasitiki yekubatira chero nguva yekushaikwa kwewelding uye isina kukwana welding parts.Iwo chaiwo maitiro ndeaya anotevera:
1.Kuongorora kunoitwa mumatanho matatu, kureva kuongorora kwekuona, kuongorora inflation uye muedzo wekukuvadza.
2. Kuongorora kwekuona: tarisa kana maviri welds ari flat, akajeka, wrinkles mahara, pachena, slag isina, bubble, leak point, melting point kana weld bead.
Kuongorora kwekuona kunonyanya kutarisisa kutaridzika kweiyo yakaiswa geomembrane, weld quality, T-shaped welding, substrate debris, etc. Vese vashandi vekuvaka vachaita basa iri mune zvese zvekuvaka.
3. Pamusoro pekutarisa kwekuona, kuongorora kwevacuum kuchagamuchirwa kune kusimba kwese welds, uye kuzviongorora pachayo kuchasimbiswa kune zvikamu zvisingagoni kuongororwa nevhavha.
4. Simba rekukwira kwemitengo rinoonekwa ne inflation pressure ndeye 0.25Mpa, uye hapana kubuda kwemhepo kwemaminetsi maviri.Tichifunga kuti iyo yakasungirirwa zvinhu zvakapfava uye zviri nyore kukanganisa, iyo inotenderwa yekumanikidza inodonha ndeye 20%
5. Pakuita tensile test pamuenzaniso wakatorwa padouble rail weld, muyero ndewekuti weld haina kubvaruka asi amai vanobvaruka nekukuvadzwa panguva yekuongorora maganda neshear.Panguva ino, welding inokodzera.Kana muenzaniso usina kukodzera, chidimbu chechipiri chichatorwa kubva kune weld yepakutanga.Kana zvidimbu zvitatu zvisina kukodzera, iyo weld yese ichagadziriswazve.
6. Samples yekupasa bvunzo ichaendeswa kuMuridzi, General Contractor uye mayuniti akakodzera kuti anyore.
7. Kukanganisa kunowanikwa mukutarisa kwekuona, kuona inflation uye kuongororwa kwekukuvara kuchagadziriswa nenguva.Izvo zvisingakwanisi kugadziriswa nekukasira zvichaiswa chiratidzo kudzivirira kusiiwa panguva yekugadzirisa.
8. Pakutariswa kwechitarisiko, kana paine hurema hwakadai semaburi pa membrane uye kushaikwa welding, kukanganisa kukwenenzverwa uye kukuvadzwa panguva yewelding, simbi nyowani ichashandiswa kugadzirisa nekufamba kwenguva, uye rimwe nerimwe divi revanga rakagadziriswa richapfuura yakakuvadzwa chikamu ne10-20cm.Ita zvinyorwa.
9. Kune yakagadziriswa weld, yakadzama yekutarisa yekuona ichaitwa kazhinji, uye kusunungurwa kuchaitwa mushure mekugadzirisa kwasimbiswa kuve kwakavimbika.
Nguva yekutumira: Zvita-14-2022