محمدرضا كلاهيان

Coastal flooding due to natural disasters such as tsunamis and storm surges can cause irreparable financial damage and casualties. Following the recent tsunamis, the unignorable impact of the Coastal Green Belt (CGB) on the damage reduction induced by these natural events was seen. However, in some areas, the CGB with young trees has not been efficient enough to dissipate the destructive energy of the tsunami, trees have been uprooted, infrastructures have been destructed and casualties have been increased. Therefore, to increase the efficiency and stability of trees against the occurrence of these extreme events, a laboratory study on the combination of coastal trees with modular structures (reef balls and perforated piles) was conducted in the laboratory flume of Iran University of Science and Technology and scaled models prepared. The models were placed in front of a surge-type flow generated by removing the vertical barrier in front of the water tank. the flow characteristics before and after models and the force absorbed by the models were collected and eva‎luated. The results show that this hybrid approach is effective in increasing the force absorbed by the tsunami by 156 and 175 percent and increasing the efficiency of the green belt by 110 and 117 percent in reducing the flow velocity, respectively, for reef balls and perforated piles.

سونامي , كمربند سبز ساحلي , ريف بال , استهلاك انرژي , حفاظت ساحلي مركب

tsunami , coastal green belt , reef ball , energy mitigation , combined coastal defense system

Mohammadreza Kolahian

Abbas Yeganeh Bakhtiary