Analisis Pemodelan Laju Sedimentasi Dan Desain Pengerukan Pada Alur Pelayaran(Studi Kasus: Alur Pelayaran Samarinda)

Firmansyah, Afrian (2023) Analisis Pemodelan Laju Sedimentasi Dan Desain Pengerukan Pada Alur Pelayaran(Studi Kasus: Alur Pelayaran Samarinda). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Alur pelayaran Samarinda memiliki panjang 51,458 Nautical Miles (95,3 KM) dan kedalaman minimal 4,4 meter LWS. Rata-rata pasang surut di alur ini adalah 1,6 meter. Pelabuhan Samarinda merupakan pelabuhan besar yang terdiri dari dua terminal, yaitu terminal kargo di kota Samarinda dan terminal peti kemas di Palaran. Selain itu, terdapat banyak Tersus dan TUKS serta yang beroperasi di sepanjang alur pelayaran Samarinda, dengan jumlah sekitar 62 TUKS, 3 Tersus, dan 3 BUP. Alur pelayaran Samarinda terletak di badan sungai dan delta Mahakam, yang memiliki potensi besar mengalami sedimentasi. Pada penelitian ini meneliti model pola arus dan sebaran sedimen dengan bantuan software dengan modul hidrodinamika dan transpor sedimen. Simulasi dilakukan dengan skenario pasang surut, debit sungai, angin, dan gelombang dari laut. Pola arus dipengaruhi dari debit sungai dan pasang surut laut. pada saat kondisi spring tide kondisi pola arus bergerak sejajar dengan garis pantai (Longshore Current) dengan kecepatan sebesar 0,3 m/s hingga 0,96 m/s. Sedangkan pada saat kondisi neap tide kondisi pola arus bergerak sejajar dengan garis pantai (Longshore Current) dengan kecepatan sebesar 0,1 m/s hingga 0,44 m/s. Selanjutnya, Untuk perubahan dasar perairan didapatkan pada setiap bulan terjadi perubahan kedalaman dari 0.2 m hingga 1,1 m. Laju sedimentasi untuk area 1 701,79 m3/hari, area 2 275,64 m3/hari, area 3 188,41 m3/hari, dan area 135,78 m3/hari. Selanjutnya dilakukan perhitungan pengerukan dengan kedalaman minimal 7,7 m dan lebar untuk 2 arah 176,4 m. Setelah itu menggunakan bantuan software Civil 3D didapatkan volume keruk sebesar 26.522.510,288 m3.Setelah itu pemodelan setelah dilakukan pengerukan didapatkan laju sedimentasi untuk area 1 635,13 m3/hari, area 2 178,04 m3/hari, area 3 135,07 m3/hari,, area 4 129,18 m3/hari, area 5 36,48 m3/hari, area 6 323,85 m3/hari, area 7 107,89 m3/hari.
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The Samarinda shipping channel has a length of 51.458 Nautical Miles (95.3 KM) and a minimum depth of 4.4 meters LWS. The average tidal range in this channel is 1.6 meters. Samarinda Port is a large port that consists of two terminals, namely the cargo terminal in Samarinda city and the container terminal in Palaran. Additionally, there are many Tersus (Special Berthing Places) and TUKS (Temporary Port Business Places) operating along the Samarinda shipping channel, with approximately 62 TUKS, 3 Tersus, and 3 BUP (Shipping Business Entities). The Samarinda shipping channel is located in a river and the Mahakam delta, which has a high potential for sedimentation.This research focuses on studying the model of current patterns and sediment distribution using software with hydrodynamic and sediment transport modules. Simulations are conducted with scenarios involving tidal cycles, river discharge, wind, and waves from the sea. The current patterns are influenced by river discharge and tidal cycles. During spring tide, the current pattern moves parallel to the coastline (Longshore Current) with speeds ranging from 0.3 m/s to 0.96 m/s. Meanwhile, during neap tide, the current pattern also moves parallel to the coastline (Longshore Current) with speeds ranging from 0.1 m/s to 0.44 m/s. Furthermore, there are changes in the water depth every month, ranging from 0.2 m to 1.1 m. The sedimentation rates for different areas are as follows: area 1 701.79 m3/day, area 2 275.64 m3/day, area 3 188.41 m3/day, and area 4 135.78 m3/day. Next, calculations were performed for dredging with a minimum depth of 7.7 m and a width of 176.4 m for 2 directions. Using the assistance of Civil 3D software, a dredging volume of 26,522,510.288 m3 was obtained. After the dredging, the sedimentation rates for each area are as follows: area 1 635.13 m3/day, area 2 178.04 m3/day, area 3 135.07 m3/day, area 4 129.18 m3/day, area 5 36.48 m3/day, area 6 323.85 m3/day, and area 7 107.89 m3/day.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Alur Pelayaran,Laju Sedimentasi,Pengerukan, Pola Arus, Sedimentasi, Volume Sedimentasi,Current Pattern, Dredging, Sedimantation, Shipping Channel, Volume sedimentation
Subjects:	Q Science > QE Geology > QE571 Sedimentation and deposition. Sediment transport. Erosion. T Technology > TC Hydraulic engineering. Ocean engineering > TC175.2 Sediment transport
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Afrian Firmansyah
Date Deposited:	20 Jul 2023 08:38
Last Modified:	20 Jul 2023 08:42
URI:	http://repository.its.ac.id/id/eprint/98742

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