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All Journal Borneo Engineering : Jurnal Teknik Sipil
Susilo, Yuly Desyana
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Civil Engineering, Building, Construction & Architecture

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Studi Perubahan Penampang Sungai Bengawan Akibat Debit Banjir Menggunakan HEC-RAS Amiruddin, Aswar; Susilo, Yuly Desyana; Ipayanti, Rantika Aulia; Bagaskara, Johan Putra; Rasdi, Rasdi
Borneo Engineering : Jurnal Teknik Sipil Volume 8 Nomor 3 Tahun 2024
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/be.v8i3.6259

Abstract

The Bengawan River exhibits interconnected dynamics. As a result, erosion and sedimentation occur at various points along the river, especially after significant discharge events. HEC-RAS is a software developed by USACE that can simulate 1D sediment transport in rivers. The objective of this research is to analyze the changes in cross-sections of the Bengawan River due to the influence of a 100-year flood using HEC-RAS. The methods employed include the analysis of the 100-year flood discharge using HEC-HMS software and the analysis of cross-sectional changes using HEC-RAS. Based on the analysis, the peak discharge of the 100-year flood hydrograph is determined to be 35.85 m³/s. In the HEC-RAS simulation using a quasi-unsteady flow type with a duration of 48 hours, changes in river cross-sections were observed at stations STA 0+275, 0+250, 0+200, 0+175, 0+100, and 0+75. These cross-sectional changes were caused by sedimentation with thicknesses ranging from 0.13 cm to 2.08 cm
Co-Authors Amiruddin, Aswar Bagaskara, Johan Putra Ipayanti, Rantika Aulia Rasdi Rasdi, Rasdi