In 1867, cov tshuab nqus dej uas tsim los ntawm Fab Kis tus kws tshaj lij Henri-Émile Bazin tau siv rau hauv kev tsim kho ntawm Suez Canal. Txij thaum ntawd los, dredging los ntawm suction tau ntau thiab ntau dua. Lub cutter suction dredger ua rau nws tshwm sim rau thaum xaus ntawm lub xyoo pua 19th.
hnub nyoog pes tsawg xyoo?
Ntawm Marseille, cov theem dredging yog sau los ntawm thib peb caug xyoo BC onwards, qhov dav tshaj plaws nyob rau hauv thawj ib puas xyoo AD. Cov seem ntawm peb lub nkoj dredging tau raug muab tshem tawm; lawv tau muab tso tseg rau hauv qab ntawm qhov chaw nres nkoj hauv thawj thiab thib ob centuries AD.
Vim li cas lawv khawb dej hiav txwv?
Dredging yog tshem tawm cov pob zeb thiab cov khib nyiab los ntawm cov pas dej hauv qab, dej ntws, chaw nres nkoj, thiab lwm qhov dej. … Kev khawb av kuj tseem ua kom txo tau cov ntses, tsiaj qus, thiab tib neeg kom muaj kab mob thiab tiv thaiv kom tsis txhob kis kab mob mus rau lwm qhov chaw ntawm lub cev dej.
Puas muaj dredging tshwm sim hauv Australia?
Kev khawb av hauv Australian dej tshwm sim hauv ntau qhov chaw sib txawv. Qee qhov chaw hauv dej hiav txwv muaj kev nkag siab ntau dua li lwm tus (xws li coral reefs, chaw zov ntses ntses). Cov chaw rhiab heev no yuav tsum muaj kev tiv thaiv qib siab thiab / lossis kev tswj hwm. Dredging tej zaum yuav muaj ob qho tib si huv si thiab paug cov sediments.
Dream tob npaum li cas?
Cov lus pom zoo: Cov khoom siv Dredged yuav tsum muaj qhov tob ntawm tsis tsawg dua 7 ft hauv qab qhov xav tau qhov tob. Nyob ntawmntawm qhov hnyav ntawm cov xwm txheej pom nyob rau hauv cov dej qhib, ib qho ntxiv 1 mus rau 3 ft (lossis tej zaum ntau dua nyob rau hauv qhov xwm txheej hnyav) yuav tsum tau ntxiv rau qhov pom zoo kom pom qhov tob.
