- Marine environment
DOI link for - Marine environment
- Marine environment book
For any immersed tunnel project, it is essential that the marine environment is fully understood. Hydraulic and hydrographic surveys and studies play an important part in the planning and detailed design of any such tunnel scheme. They are used to address such issues as
• The hydraulic consequences of both the temporary and permanent works, which would include changes to the scour and accretion patterns
• The rate at which sediment is deposited in the open trench, to enable the dredging contractor to plan his work
• The loadings that need to be applied on the tunnel elements and that need to be taken into account for the selection of the appropriate marine plant, equipment, and methods
They will enable the correct decisions to be made while planning, designing, and constructing the tunnel. The overall hydrographical, meteorological, and climatic conditions at the site must be investigated and documented, and used as a basis for the project. Once these conditions are understood, they can be used to assess their various impacts on the construction operations and on the completed tunnel itself.