1. Comparison of digging depth: cutter suction dredger, digging depth is 25-30 meters; trailing suction dredger, digging depth is more than 35 meters.
2. Differences in work areas: Cutter suction dredgers are suitable for dredging in inland rivers and lakes with low wind and waves and low flow rates and coastal ports; trailing suction dredgers have strong wind and wave resistance, and are very suitable for coastal ports, navigation channels, and wide rivers. Ship anchorage operations.
3. Comparing the structure of the suction head: the cutter suction type is composed of a suction pipe and a rotary cutter device installed around the suction pipe at the front end; the trail suction type is composed of a suction pipe and a rake with the front end like a cow ploughing.
4. Cost comparison: The cutter suction dredger is an economical type dredger; while the trailing suction dredger is relatively expensive. The cost of a domestically-made trailing suction dredger is about 20,000 yuan/m3 (The volume of the mud tank per cubic meter).
5. Comparison of offshore distances: Cutter suction dredgers need to dig and transport the sand out. The discharge distance is generally about 1000 meters, and the working distance is limited; trailing suction dredgers really gather all the dredging equipment One, independent work, wide range of work.
6. Comparison of construction requirements: Cutter suction dredgers need to discharge mud and lower anchor cables, which will affect other vessels, and generally need to close the port; trailing suction dredgers work independently and do not need to close the port. Port production is hardly affected. influences.
7. Comparison of dredging components: Cutter suction dredgers are basically suitable for digging various types of soil; trailing suction dredgers are suitable for digging silt, clay and sandy soil on the river bottom.
