Modelling of Sediment Transport during Breakwater Riprapping
Abstract
A coupled hydrodynamic and mud transport model based on MIKE 21 software was established to simulate the sediment transport caused by the breakwater riprapping in a land reclamation project in Xiangshan County of Ningbo City, China. The model was calibrated with the tidal level and current speed and direction measurements in the project area in 2011. The results indicated that the sediment transport was largely controlled by the local hydrodynamic conditions. The concentration increment due to both riprapping and gate construction of 10 mg/L is 104.6 km2, most of which is caused by riprapping (91.0%). The impacted area caused by riprapping is considerable large compared with the breakwater length of 10 km and the land reclamation area of 18 km2. Therefore it is suggested that measures have to be taken to mitigate the negative impact caused by the increment of sediment concentration due to riprapping.
Keywords
Riprapping, Sediment transport, Numerical modelling, MIKE 21
DOI
10.12783/dteees/icepe2017/11820
10.12783/dteees/icepe2017/11820
Refbacks
- There are currently no refbacks.