Amathangi okugcina amanzi ne-slurry ayizinsiza ezibalulekile ezisizayo emisebenzini yokwakha izisekelo ezijulile nasekuphuculeni umhlaba, asebenza njengezixazululo zokubamba nezokugcina eziphatha ama-jubane amahle amanzi okumba, ama-slurries we-cement-bentonite, kanye namanzi okwenza phakathi nawo yonke imisebenzi yokwakha udonga lwe-diaphragm, ukufakwa kwemishetshe yokuhlukanisa, ukugrouta kwejet, kanye nezinhlelo zokuxuba umhlabathi. Lezi zithangi zisebenza ngezifundo ezibalulekile ezimbili: ukugcina ukuhlinzeka okuvamile kwezimvula emisebenzini yokubhoboza nokufaka, kuyilapho zinikeza ikhono lokuhlala okwesikhashana nokuhlukanisa okukhona emaqoqweni amancane ngaphambi kokusetshenziswa kabusha noma kokuphuma kwezimvula, ngaleyo ndlela kuthuthukiswe ukusebenza kahle kwezokusebenza nokunciphisa ukuhweba kwezinto ngesikhathi eside semisebenzi. Ekushayeleni udonga lwe-diaphragm, amathangi wamanzi ne-slurry agcina ama-slurries e-bentonite anokwenziwa kwe-polymer ahlaziya odongeni lwezikhala ngesikhathi sokumba, kanye nezidingo ezivamile zephrojekthi eziyizi-50 kuya kwezi-500 ze-cubic meters kuya ngobukhulu bendonga, ubude, kanye nezimo zomhlaba. Ngenkathi kufakwa imishetshe yokuhlukanisa nge-deep mixing noma i-jet grouting, amathangi e-slurry agcina imidiya yokufaka esekelwe ku-cement kanye nezimvula zokuphumula, nezinga lokuhlukaniswa elibalulekile ukuze kuvinjelwe ukuvaleka kwendawo yokufaka ngaphambi kokwaziswa okuqondile kwe-grout. Kwimiphakathi yama-secant pile kanye ne-sheep pile ehilela ukujola okuholela ekuhlanganiseni noma ukulawulwa kwamanzi omhlaba, lezi zithangi zigcina amanzi okwenza kanye nezithako zamakhemikhali ezilinganayo ezilingana nenani lama-pile, ubude bokubhoboza, kanye nezidingo zokujikeleza. Ekusebenzeni, amathangi e-slurry asebenza njengezigaba zokuhlala lapho izigaxa nezinsalela ezincane zihlukana ngaphansi kwesisindo, kuvumela amanzi ahlanzekile ukuthi agijime kabusha nge-centrifuge, ama-shaker, noma ezinye izinsiza zokuhlukanisa emuva kumjikelezo wokubhoboza/nokufaka. Ukubala ivolumu yethangi kubheka isilinganiso sokuhamba (ngezikhathi ezivamile eziyi-100–300 m³/h emisebenzini yokubhoboza enkulu), isikhathi sokuhlala (mimuphi phakathi kwemizuzu engama-30–120 kuye ngesimo se-rheology yemvula kanye nocaciso olufunwayo), kanye nesikhathi sephrojekthi. Umklamo ohlelekile wethangi uhlanganisa ama-baffle plates ukuze unciphise ukukhathazeka nokuphazamiseka, ama-porti ophuma phezulu kwezingqimba zothuli, kanye nemijikelezo yokudlulisa ukuvimbela ukuchitheka ngesikhathi sokuhamba okuphezulu nezimo zokuhamba komoya. Amathangi okugcina atholakala ngezinhlelo eziningi: amathangi aphekiwe nge-steel anama-3–10 mm ububanzi bezindonga zokufaka okuphakade, amathangi e-steel ahlanganiswe (50–200 m³) abhiye endaweni enezixhumi ezisheshayo, kanye namathangi e-fabric aphukile (polyvinyl noma polyethylene) ezinhlelweni ezinendawo encane noma izimfuno eziphezulu zokuhamba. Izinhlaka zethangi ziya ngokuhlukahluka okunamandla ngokuya ngezinhlobo ze-slurry: ama-slurry e-cement anokwenziwa okuphezulu kudinga ukujikeleza ngokucophelela nge-mixers ye-paddle esheshayo ukuze kuqinisekiswe ukuhamba ngaphandle kokuphula ubudlelwano bezinsalela, kuyilapho ama-fluids okubhoboza asekelwe emanzini angase abe ne-centrifugal segregators noma ama-ponds okuhlangana ahlanganiswe ngaphakathi kwesakhiwo sethanki. Izinkomba zokukhetha zifaka phakathi ukusebenza okunikezwayo kuye ngezidingo zokuhamba kwansuku zonke kanye nesikhathi sokuhlala, ukuhambisana kwezinto (ama-slurries e-cement-bentonite adinga ukuhlinzekwa kwe-epoxy-lined noma izinsiza ezingaphezu kwe-stainless ukuvimbela ukugqwala nokungcoliswa), ibanga lokushisa lendawo (izinhlelo zokushisa zidingeka ezindaweni ezibandayo ukuze kugcinwe ukuhamba okwakhiwe), kanye nohlelo lokuphathwa kwe-sludge (ama-valve okuphuma phansi, ukwakhiwa kwe-vacuum, noma ukudonswa kwe-mechanical). Ukuhambisana nemithetho ye-EN 1538 (odongeni lwe-diaphragm), i-EN 14679 (i-jet grouting), kanye nezindinganiso zokuphuma kwendawo eziyimvelo zikhokhela izinto zokwakha amathangi kanye nezinqubo zokuphuma. Iphrojekthi ezindaweni ezinalo ukungcoliswa noma ezindaweni zokuhlukaniswa kwamanzi zingadinga ukuhanjiswa kwesibili noma izinhlelo zokubuyisela ezivaliwe ukuze kuvinjelekile ukukhululwa kwemvelo kanye neziqu eziyimikhawulo.
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