I-suite ethuthukisiwe yeinqwaba yeshidi lensimbiizinhlelo manje sezivumela ukwakhiwa kwebhuloho okusheshayo kwesitimela esisheshayo kumaphrojekthi amaningana amakhulu eNyakatho Melika, eLatin America nase-Asia. Imibiko yobunjiniyela ikhombisa ukuthi ikhambi elithuthukisiwe elisekelwe kumazinga ensimbi aqinile kakhulu, amasu okufaka amamojula kanye nokuvikelwa kokugqwala okungcono kuvumela ukunciphisa okukhulu isikhathi sokwakhiwa kwesisekelo, ngenkathi kukhulisa ukuzinza kwesakhiwo isikhathi eside.
Abaqondisi bephrojekthi emzileni wesitimela ohamba ngesivinini esikhulu e-US West Coast babika ukuthi lo mkhakha wesimanjeinqwaba yeshidiuhlelo lusheshisa ukwakhiwa kwe-cofferdam, lunciphisa isidingo semishini enzima, futhi lwandisa kakhulu ukuphepha ezimweni zenhlabathi egcwele amanzi nethambile. Lobu buchwepheshe buvumela ukucwiliswa okujulile kanye nomthamo omkhulu wokulayisha ohlangothini okwenza lufanelekele izinsika zamabhuloho kanye nezindawo zokusekela ezimweni zomhlabathi ezinzima.
EMexico naseChile, lapho kuqhubeka khona izinhlelo eziningana ezintsha zezitimela phakathi kwamadolobha, osonkontileka baqokomisa ukuthiinqwaba yeshidi lokuthayipha u-uIsixazululo sinikeza ukugcinwa komhlabathi okungabizi kakhulu, sisekela ukumba okusheshayo, futhi sinikeza enye indlela enobungani nemvelo kunezindonga zokugcina ukhonkolo eziqinisiwe zendabuko. Ukusetshenziswa kwayo kabusha kunciphisa kakhulu imfucuza yezinto ezibonakalayo kanye nokukhishwa kwegesi kuyo yonke iphrojekthi.
Ukuthuthukiswa okubaluleke kakhulu kuvela ekusetshenzisweni kwezinhlobo zensimbi ezinamandla aphezulu ezihambisana nezindinganiso ze-ASTM/AASHTO, okuvumelainqwaba yensimbi enomumo we-uukubhekana nokucindezeleka okukhulu okulindelekile kusitimela esisheshayo. Ukwembozwa okuthuthukisiwe okumelana nokugqwala kwandisa nokuphila kwensizakalo yesisekelo okunikeza ukuzinza kwesikhathi eside kwamabhuloho esitimela aklanyelwe insizakalo yeminyaka engu-80-100.
Iziphathimandla ezivela eminyangweni eyahlukene yezokuthutha zithi uhlelo lokuthuthukisa luzoba yisihluthulelo ekwandisweni kwezitimela zesivinini esiphezulu esikhathini esizayo. Njengoba ukutshalwa kwezimali kwengqalasizinda yomhlaba wonke kugxile esivivinyweni esisheshayo sempilo kanye nendlela yokwakha eluhlaza, ikhambi lenqwaba yensimbi esebenza kahle kakhulu lizoba yindinganiso yokuklama amabhuloho amasha esitimela.
Njengoba izizwe zigijimela ukwakha izinhlelo zesitimela zesivinini esiphezulu zesizukulwane esilandelayo, lobu buchwepheshe obuphambili besisekelo sensimbi buzoguqula ukwakhiwa kwamaphrojekthi amakhulu amabhuloho, buthuthukise ukulethwa kwemisebenzi endaweni futhi buhlinzeke ngamabhuloho aqinile kanye nezixazululo ezihlala isikhathi eside ezizukulwaneni zabakhi bengqalasizinda.
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Isikhathi sokuthunyelwe: Novemba-07-2025