Optimasi desain rencana tanggul lepas pantai NCICD di Teluk Jakarta terhadap kemungkinan tsunami akibat letusan Gunung Anak Krakatau
DOI:
https://doi.org/10.32679/jsda.v13i1.170Kata Kunci:
Tsunami Anak Krakatau, transmisi gelombang, tanggul lepas pantai, Teluk Jakarta, Program NCICDAbstrak
Salah satu rencana pengembangan infrastruktur di Teluk Jakarta adalah dengan membangun tanggul lepas pantai yang akan membentuk kolam retensi. Pembangunan kolam retensi tersebut dilakukan apabila fase perkuatan tanggul yang ada tidak dapat menangani permasalahan banjir Jakarta. Berdasarkan master plan National Capital Integrated Coastal Development (NCICD), tanggul lepas pantai bentuk Garuda diusung sebagai “iconic” negara Indonesia. Namun demikian, bentuk Garuda tersebut belum dinvestigasi dari segi hydraulic. Paper ini akan membahas optimum layout dari bentuk Garuda dari sisi propagasi gelombang. Hasil simulasi dengan ¼ energi gelombang dari tsunami Krakatau 1883 menunjukan tinggi gelombang di kepala garuda dapat mencapai elevasi maksimum 11 m dan elevasi minimum 6 m. Alternatif desain dengan merotasi layout tanggul lepas pantai ke arah timur 150 (layout paralel terhadap arah datang gelombang) merupakan salah satu bentukan optimum dari desain tanggul lepas pantai stage-B.
Referensi
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