Isuite ethuthukisiwe yeinqwaba yeshidi lensimbiamasistimu manje avumela ukwakhiwa kwebhuloho okusheshayo kukaloliwe wesivinini esikhulu kumaphrojekthi ambalwa amakhulu eNyakatho Melika, eLatin America nase-Asia. Imibiko yobunjiniyela ibonisa ukuthi isixazululo esithuthukisiwe esisekelwe kumabanga aphezulu ensimbi, amasu okufaka amamojula kanye nokuvikela ukugqwala okungcono kuvumela ukuncipha okukhulu kwesikhathi sokwakha isisekelo, kuyilapho kukhulisa ukuzinza kwesakhiwo sesikhathi eside.
Abaqondisi bephrojekthi emhubheni wesitimela esinesivinini esikhulu sase-US West Coast babika ukuthi isimo sesimanjeinqwaba yeshidiuhlelo lusheshisa ukwakhiwa kwe-cofferdam, lunciphise isidingo semishini emikhulu, futhi lukhulise kakhulu ukuphepha ezimweni ezigcwele amanzi nezithambile. Lobu buchwepheshe buvumela ukushumeka okujulile kanye nomthamo omkhulu wokulayisha oseceleni okwenza bufanelekele izinsimbi zamabhuloho nokuxhunywa ngaphansi kwezimo ezinzima zomhlabathi.
E-Mexico nase-Chile, lapho kuqhubeka khona izinhlelo ezintsha zesitimela phakathi kwamadolobha, osonkontileka bagqamisa lokho okushauthayipha inqwaba yeshidiIsixazululo sinikeza ukugcinwa komhlaba okungabizi kakhulu, sisekela ukumba ngokushesha, futhi sinikeza enye indlela evumelana nemvelo kunezindonga zokugcina zikakhonkolo eziqinisiwe zendabuko. Ukusebenziseka kabusha kwayo kunciphisa udoti wezinto ezibonakalayo kanye nokukhishwa kwephrojekthi iyonke.
Imiphumela ebaluleke kakhulu yokuthuthukisa evela ekusetshenzisweni kwamabanga aphezulu ensimbi ahambisana namazinga e-ASTM/AASHTO, avumelaubumba inqwaba yensimbiukuba ngaphansi kokucindezeleka okunzima okulindeleke kumzila wesitimela wesivinini esikhulu. Izingubo ezithuthukisiwe ezimelana nokugqwala ziphinde zikhulise impilo yesevisi eyisisekelo ehlinzeka ukuzinza kwesikhathi eside kwamabhuloho wesitimela adizayinelwe isevisi yeminyaka engu-80-100.
Iziphathimandla zeminyango ehlukene yezokuthutha zithi lolu hlelo lokusebenza luzoba ukhiye ekwandiseni izitimela ezihamba ngesivinini esikhulu esikhathini esizayo. Njengoba ukutshalwa kwezimali kwengqalasizinda yomhlaba kugxile esivinini sempilo kanye nendlela yokwakha eluhlaza, isixazululo senqwaba yamashidi ensimbi esisebenza kahle sizoba indinganiso yokwakhiwa kwamabhuloho amasha kaloliwe.
Njengoba izizwe zijaha ukwakha isizukulwane esilandelayo samasistimu kaloliwe wesivinini esikhulu, lobu buchwepheshe besisekelo sensimbi obuphayona buzoguqula ukwakhiwa kwamaphrojekthi amakhulu amabhuloho, kuthuthukiswe ukulethwa kwezindawo zemisebenzi kanye nokuhlinzeka ngamabhuloho aqinile nezisombululo ezizinzile ezizukulwaneni zabakhi bengqalasizinda.
Ikheli
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Isikhathi sokuthumela: Nov-07-2025