DESIGN OF LAND RECLAMATION FOR THE DEVELOPMENT OF DRY BULK TERMINAL IN CIGADING PORT, BANTEN

• Main Author: Mutaqin, Fajrul
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik militer dan nautika
• Online Access: https://digilib.itb.ac.id/gdl/view/54119
• Institution: Institut Teknologi Bandung

The Cigading Port is a strategic port in Cilegon, Banten Province which faces the waters of the Sunda Strait. This port infrastructure supports the surrounding national important industrial areas, which are mainly the steel and petrochemical industries. During its development, this port has become one of the largest dry bulk ports in Indonesia, serving around 17.7 million tons of dry bulk per 2017 and is planned to meet the service demand of 25 million tons by 2025. The terminal development plan is to reclaim the seaside area with a total area of 15 hectares or 150,000 m2 in the area Cigading Terminal 1, Cigading Port as a solution to demand and limited land area for the port future development. Reclamation planning in this study is based on the geotechnical conditions of the soil and the environment around the site review which aims to plan the elevation of the reclamation area embankment, calculate the safe distance between the embankment and the built port structure, investigate the stability of the reclamation area embankment, and estimate and plan the rate of settlement of the reclamation area embankment. The analysis and soil stability planning phase used the element method by modeling in the PLAXIS 2D software, and for soil improvement and accelerating consolidation using vertical drainage. Based on the results of analysis and calculations, the reclamation embankment is planned to have an elevation of +4,1 m LWS with 4 stages of stockpiling and 2 stages of preloading. The value of the safety factor obtained from the stability analysis of the embankment is 1.294 at the operational stage with a safe distance of embankment feet and the built structure must be 20 meters. Furthermore, the amount of land subsidence that occurs due to embankment reclamation is 2.59 meters, with the addition of the implementation pile of 1.6 m. The use of PVD with a 1 meter triangular spacing pattern can accelerate the time of soil consolidation at a consolidation degree of 90% (U = 90%) from 1448 months (43440 days) to 1,83 months or 55 days, but requires more quantity in length units of 9%, when compared to the square spacing type pattern.