Txoj kev loj hlob ntawm cutter suction dredgers tau dhau los ntawm peb theem: Ua ntej, nyob rau hauv lub xyoo pua 18th, cov neeg Amelikas tau tsim cov cutter suction dredger. Lub sijhawm ntawd, cov dredgers tau siv los ua cov av xuab zeb hauv cov dej ntws hauv dej, thiab lawv cov hulls kuj me me. Cov theem no tau mus txog rau xyoo 1960. Qhov thib ob theem yog los ntawm 1960s mus rau 1990s, nrog rau cov teb chaws xws li Netherlands thiab Nyij Pooj tau ua tus thawj coj hauv av reclamation nyob rau hauv qhib hiav txwv. Lub Netherlands ib leeg tau rov qab 2,300 square kilometers ntawm thaj av nyob rau hauv lub xyoo pua xeem, sib npaug li ntawm 320,000 tus qauv football teb, yog li txhawb nws mus rau txoj haujlwm tseem ceeb hauv kev tsim thiab tsim cov cutter suction dredgers. Qhov thib peb theem pib tom qab 2000, nrog loj cutter suction dredgers mus rau hauv lub hiav txwv tob, thiab Tuam Tshoj pib nws nce. Tuam Tshoj txoj kev ywj pheej innovation muaj peev xwm tau txhim kho tau zoo, ua tiav qhov zoo tshaj plaws los ntawm kev hloov kho hauv tsev mus rau kev ywj pheej tsim thiab kev tsim kho. Xyoo 2017, Ministry of Commerce tau tshaj tawm tsab ntawv ceeb toom hais tias, txhawm rau tiv thaiv kev nyab xeeb hauv tebchaws thiab kev txaus siab, nws txwv tsis pub xa tawm ntawm siab -powered cutter suction dredgers mus rau txhua lub tebchaws.
Loj cutter suction dredgers churn up unseen riverbed thiab seabed sediment thiab reefs, ua rau coj - tawm ntawm chaw nres nkoj kev lag luam thiab solidifying lub hauv paus ntawm ib tug maritime hwj chim. Los ntawm tsis tuaj yeem tsim thiab tsim lawv 20 xyoo dhau los txog rau niaj hnub no, nrog rau ib qho tom qab lwm lub tsev tsim thiab tsim cov khoom siv hauv hiav txwv hnyav, peb qhuas cov kev siv zog tsis tu ncua ntawm ntau tiam neeg ntawm cov kws tshawb fawb Suav thiab tos ntsoov rau kev yug los ntawm ntau yam kev tsim kho hauv Suav teb!