Muttaqin, Ahmad Sabilul (2026) Integrasi Desain Alur Pelayaran Timur Surabaya Dan Pemanfaatan Sedimentasi Laut Berbasis Analisis Numerik Transport Sedimen Untuk Kegiatan Reklamasi Pesisir Di Pantai Timur Surabaya. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pantai Timur Surabaya merupakan kawasan pesisir yang memiliki dinamika hidrodinamika dan sedimentasi yang kompleks akibat interaksi proses alami dan intervensi antropogenik. Sedimentasi yang terjadi berpotensi menyebabkan pendangkalan alur, tetapi juga dapat dimanfaatkan sebagai material reklamasi. Penelitian ini bertujuan menganalisis integrasi desain alur pelayaran dan pemanfaatan sedimentasi laut melalui pemodelan numerik transport sedimen. Metode yang digunakan meliputi pengolahan data hidrooseanografi, batimetri, dan sedimen, kemudian dimodelkan menggunakan Delft3D pada tiga skenario, yaitu kondisi eksisting, pasca reklamasi, serta pasca pengerukan sedimen dan alur pelayaran. Hasil validasi menunjukkan model cukup representatif, dengan RMSE pasang surut 0,19 m, RMSE arus 0,14 m/s, dan RMSE tinggi gelombang 0,10 m. Desain alur pelayaran direncanakan sepanjang 40.918,70 m, lebar 150 m, kedalaman -14 m LWS, dan slope 1:4, menghasilkan volume keruk sebesar 53.692.484,34 m³. Kebutuhan material reklamasi sebesar 65.314.343,14 m³, sedangkan total material hasil pengerukan alur dan pemanfaatan sedimen mencapai 70.126.678,54 m³. Intervensi morfologi seperti reklamasi, pengerukan sedimen, serta pembentukan alur pelayaran menyebabkan perubahan konsentrasi dan peningkatan kecepatan arus pada area alur pelayaran. Pada fase menuju pasang musim timur, kecepatan arus dapat meningkat hingga sekitar 0,60-0,70 m/s, sedangkan pada musim barat peningkatan lokal mencapai sekitar 0,50-0,60 m/s. Perubahan konsentrasi arus menyebabkan perubahan lokasi akumulasi erosi dan sedimentasi, pada alur pelayaran dalam kurun waktu lima tahun mengalami sedimentasi pada rentang 0,11-0,96 meter pada titik tertentu sehingga dalam jangka waktu tersebut dibutuhkan pengerukan pemeliharaan.
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The East Coast of Surabaya is a coastal area characterized by complex hydrodynamic and sedimentation dynamics resulting from the interaction between natural processes and anthropogenic interventions. Sedimentation in this area has the potential to cause navigation channel siltation; however, the accumulated sediment may also be utilized as reclamation material. This study aims to analyze the integration of navigation channel design and the beneficial use of marine sediment through numerical sediment transport modelling. The methodology involved the processing of hydro-oceanographic, bathymetric, and sediment data, followed by numerical modelling using Delft3D under three scenarios: existing conditions, post-reclamation conditions, and post-dredging conditions including sediment dredging and navigation channel development. The validation results indicate that the model provides a reasonably representative simulation of field conditions, with an RMSE of 0.19 m for tidal elevation, 0.14 m/s for current velocity, and 0.10 m for significant wave height. The navigation channel was designed with a total length of 40,918.70 m, a width of 150 m, a depth of -14 m relative to LWS, and a side slope of 1:4, resulting in an estimated dredging volume of 53,692,484.34 m³. The reclamation material requirement was estimated at 65,314,343.14 m³, while the total material obtained from navigation channel dredging and sediment utilization reached 70,126,678.54 m³. Morphological interventions, including reclamation, sediment dredging, and navigation channel development, modified the current distribution and increased current velocities within the navigation channel area. During the rising tide phase in the east monsoon, current velocity increased to approximately 0.60-0.70 m/s, while during the west monsoon, local current acceleration reached approximately 0.50-0.60 m/s. These changes in current concentration influenced the spatial distribution of erosion and sedimentation. Over a five year period, sedimentation within the navigation channel was predicted to occur locally within a range of 0.11-0.96 m, indicating the need for maintenance dredging within this time frame.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Sedimentasi, Reklamasi, Alur Pelayaran, Pantai Timur Surabaya. Sedimentation, Reclamation, Navigation Channel, East Coast of Surabaya. |
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering > TC175.2 Sediment transport T Technology > TC Hydraulic engineering. Ocean engineering > TC187 Dredging T Technology > TC Hydraulic engineering. Ocean engineering > TC343+ Reclamation of land from the sea |
| Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38101-(S2) Master Thesis |
| Depositing User: | Ahmad Sabilul Muttaqin |
| Date Deposited: | 18 Jul 2026 08:51 |
| Last Modified: | 18 Jul 2026 08:51 |
| URI: | http://repository.its.ac.id/id/eprint/135433 |
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