Preparation Before Working of Cutter Suction Dredger

1. Opening width, water depth and its variation law of the river channel;

2. Bank height and slope length;

3. Riverbed and sediment properties and soil hardness;

4. Distribution of trees and buildings on the bank;

5. The height, size and trafficability requirements of the bridge gate on the river;

6. Whether there is a mud dump nearby, requirements for mud concentration and mud treatment methods;

7. Shore access, mechanical operation mode, site and requirements for mechanical access to the site;

8. Guarantee of electric power, energy and logistic maintenance;

10. Construction season and climate conditions, etc.