Design of Coastal Protective Structures at Pantai Penyak, Bangka Belitung Regency, Kepulauan Bangka Belitung Province

• Main Author: Ridho, Muhammad
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/42952
• Institution: Institut Teknologi Bandung

Indonesia is a maritime country that has a coastline of 99,093 kilometers along with a total of 13,466 islands named and coordinated. Some of them are used as tourist attractions, for example, Terentang Beach in Central Bangka Regency, Bangka Belitung Islands Province. However, the beach has experienced erosion in recent years. An erosion of the coastline if left uncontrolled will certainly have an impact on the lives of local people and tourists. Therefore, it is necessary to plan coastal protection structures to avoid further erosion of the coastline. The erosion that occur in the Terantang Beach are analyzed using the Generalized Model for Simulating Shoreline Change (GENESIS) Coastal Engineering Design and Analysis System (CEDAS) module. The GENESIS Software will simulate coastline setbacks and implement appropriate coastal protective structures to overcome the coastline setbacks that occur. The coastal protective structures that is modeled is in the form of Groin, Breakwater, Revetment, and a combination of the three buildings. The results obtained that the appropriate coastal protective structure is breakwater. Breakwater selected amounted to 11 pieces with a length of 140 m each and placed at a distance of 110 meters from the coastline, and the distance between breakwater of 40 meters. The breakwater structure consists of an Armor layer made of tetrapod, a filter layer and a core composed of natural stones of different sizes, and a toe protection layer.