Estimasi Volume dan Biaya Dredging Alur Pelayaran Barito Menggunakan Multibeam Echosounder
Muhammad Hilmi Aqil Hibatullah, Ir. Abdul Basith, S.T ., M. Si., Ph.D.
2026 | Skripsi | TEKNIK GEODESI
The Alur Barito, located at the mouth of the Barito River in South Kalimantan, is a 15-kilometer main shipping route with a 100-meter-wide channel. Various mining companies use the Barito Channel to transport coal via tongkang barges. Over 10,000 ships pass through the channel annually, accelerating sedimentation rates. To maintain the channel's depth according to safety standards, maintenance dredging is performed at a cost of Rp156.69 billion. Until now, no study has estimated the cost of dredging the Barito Channel by considering the volume and type of sediment, the selection of dredging vessels, and the method and period of dredging. Therefore, this study uses multibeam echo sounder data to estimate the volume and cost of dredging the Barito Channel.
This study uses corrected multibeam data, with two measurement periods conducted in July and August 2024. These data were used to analyze changes in the channel bed morphology and to estimate the dredging volume planned for December 2024. The volume of dredging was estimated by considering two dredging designs that produce different dredging volume requirements. The estimated volumes were then analyzed to calculate the cost of dredging with three alternative dredging ships: TSHD 9000, 5000, and 2500, taking into account the cost of the ships and the time required for the work. The analysis of the dredging period was also conducted based on the results of the previous sedimentation study.
The data processing results show that there is a change in the morphology of the riverbed within a one-month period. The volume estimate was 319,663.66 m³ for the simulation design and 3,841,828.32 m³ for the standard design. Based on the cost estimates for the two volumes of the designs, it was found that the most economical cost for the two dredging projects was with the TSHD 9000, at a cost of Rp46.194 per m³ for the simulation design and Rp46.054 for the standard design. The results of the study show that the larger the volume of dredging, the lower the cost per unit volume. Based on sedimentation analysis, the recommended dredging period is twice a year for the simulation design and once every two years for the standard design.
Kata Kunci : Alur Pelayaran, Barito, Pemeruman, Multibeam Echosounder, Pengerukan, Estimasi Volume, Estimasi Biaya