What is the difference between a cutter suction dredger and a trailing suction dredger?

1. Comparison of digging depth: the cutter suction dredger has a digging depth of 25-30 meters; the trailing suction dredger has a digging depth of more than 35 meters.

2. Differences in work fields: cutter suction dredgers are suitable for dredging inland river lakes and coastal ports with small wind waves and low flow velocity; trailing suction dredgers are strong in wind and wave resistance, and are very suitable for coastal ports, waterways, wide rivers and coastal ports. Ship anchorage operations.

3. Comparing the structure of the suction head: twisting suction type, which is composed of a water suction pipe and a rotating reamer device installed around the water suction pipe at the front end; rake suction type, which is composed of a water suction pipe and a rake at the front end like a cow plowing a field.

4. Cost comparison: cutter suction dredgers are economical and applicable dredgers; while trailing suction dredgers are relatively expensive, and the cost of domestic trailing suction dredgers is about 20,000 yuan/cubic meter (The capacity of the mud tank per cubic meter) is about.

5. Comparison of offshore distance: Cutter suction dredgers need to dig and transport out the sediment. The mud discharge distance is generally about 1,000 meters, and the working distance is limited; trailing suction dredgers really integrate all dredging equipment in one place. One suit, independent work, wide range of work.

6. Comparison of construction requirements: cutter suction dredgers need to discharge mud and drop anchor cables, which will affect other ships, and generally need to seal the port; trailing suction dredgers work independently, without closing the port, and port production is almost unaffected Influence.

7. Comparison of dredging components: cutter suction dredgers are basically suitable for digging various types of soil; trailing suction dredgers are suitable for dredging river bottoms of silt, clay and sandy soil.