Nrog rau kev loj hlob ntawm dredgers thiab kev nce qib sai ntawm kev tshawb fawb thiab thev naus laus zis, ntau lub tuam txhab dredging tau tsim ntau hom dredgers kom tau raws li kev tsim kho ntawm cov haujlwm sib txawv. Cov dredgers feem ntau siv hauv engineering tej yaam num yuav muab faib ua ob pawg loj: mechanical thiab hydraulic. Mechanical dredgers feem ntau siv cov cuab yeej excavating rau underwater excavation, siv cov cuab yeej nws tus kheej rau ntsug lifting kom ua tiav cov hom phiaj. Cov no feem ntau suav nrog rub dredgers, thoob dredgers, thiab ntaiv dredgers. Hydraulic dredgers, ntawm qhov tod tes, siv kev sib hloov tshuab los txiav los ntawm cov av hauv qab dej, sib tov cov av nrog dej los tsim cov slurry ntawm qee qhov concentration, uas yog thauj mus rau ntug dej los ntawm cov kav dej. Cov no muaj xws li suction dredgers, cutter suction dredgers, thiab trailing suction hopper dredgers. Thaum xaiv lub dredger, qhov xwm txheej ntawm qhov project thiab huab cua, hydrological, thiab thaj chaw ntawm thaj chaw tsim kho yuav tsum raug txiav txim siab.
Hauv thaj chaw ntug dej hiav txwv thiab estuarine uas muaj cua daj cua dub thiab nthwv dej thiab tsis muaj chaw nyob, tus kheej - tau pom zoo kom siv lub tshuab nqus dej twj tso kua mis; cutter suction dredgers nrog cov kav dej yog feem ntau siv ua ke nrog cov haujlwm reclamation; thoob dredgers yog siv rau cov av tawv seabeds; thiab rau thaj chaw ua haujlwm me me, xws li nyob rau pem hauv ntej ntawm qhov chaw nres nkoj wharves, rub dredgers yog nyiam. Thaum lub sijhawm ua haujlwm dredging, nws yog ib qho tseem ceeb kom tsis txhob muaj kev cuam tshuam ntawm kev thauj mus los ntawm cov nkoj, ua tib zoo saib xyuas kev nyab xeeb, thiab xyuas kom meej tias txhua qhov chaw ua haujlwm zoo. Qhov tseeb txoj hauj lwm ntawm thaj chaw dredging yuav tsum tau cim rau ntawm - qhov chaw, thiab cov cim qhia theem dej, dredging thiab unloading area markers yuav tsum tau teeb tsa. Kev ntsuas qhov tob tsis tu ncua yuav tsum tau coj los txhim kho kev nyab xeeb ntawm kev ua haujlwm dredging.
