SYSTEMATIC DESIGN AND ANALYSIS WITH PHYSICAL MODELING OF TEMPORARY BREAKWATER BAMBOO PILE WITH MUSSELS AS A NATURAL BEACH PROTECTION IN INDONESIA

• Main Author: Faiz Muzakki, Burhanuddin
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/68979
• Institution: Institut Teknologi Bandung

Ocean waves sustain great energy, so they might have the potential to damage coastal areas. Furthermore, it is necessary to make coastal protection to prevent the damage. One of the natural coastal protectors is the mangrove forest. Nonetheless, in the process of planting and growing mangrove seeds, protection is needed to keep the mangroves growing well so that they can function optimally. Mangrove seed protectors are also called beach protectors while they can be in the form of geobag structures, bamboo piles, or other protectors. Bamboo piles are one of the effective temporary beach protectors that can be physically modeled. In this final assignment, this research will be analyzing the physical model test of the coastal protection system in the form of a bamboo pile model and a mangrove model. The research scenario in the form of wave variation used is variation in significant wave height (Hs) and peak period (Tp). The wave steepness range adapted to the wave conditions in Indonesia is 0.0005-0.006. The significant wave heights used in this research are 0.15 m, 0.10 m, and 0.08 m. The peak period ranges from 1.17 seconds to 5.56 seconds. In this research there are nine structural scenarios with ten wave variations. The results of the research show that the value of the transmission coefficient produced due to the presence of coastal protection in the form of breakwater poles, mussels, and mangroves is 0.46 and 0.63, while the percentage of significant wave height reduction with breakwater bamboo poles, mussels, and mangroves is 33.63% and 40.02% for pole and mangrove breakwater system. In addition, the most effective design or configuration based on the results of the transmission coefficient value, the reduction percentage and the use of the number of poles in the configuration is SA1 with a breakwater width of 0.80 m, the distance between rows 0.05 m, the distance between columns 0.05 m and the number of poles used is 383 fruit. As well as SB1 with a breakwater width of 1.50 m, distance between rows 0.10 m, distance between columns 0.05 m and the number of poles that are being used is 360.