The content of research is collection, synthesis, and analysis of the process, norm, software, documents, data, and the actual projects at home and aboard. Since then suggested the following issues: 1/ General way, scientific methodology, the basic problems, has invested much effort to exploit and use professionally powerful calculation software for kind of cofferdam by bulk material: cofferdam in the shipyard, border dike protects port breakwater, preventing sand, preventing sand - reducing sand...
2/ Has been giving instructions, building algorithms and is the promise to come to build the specialized computer program automated to design cofferdam by bulk materials in building project of port and waterway.