Estimating design flood and HEC-RAS modelling approach for flood analysis in Bojonegoro city

Quality in Research: International Symposium on Materials, Metallurgy, and Chemical Engineering

材料科学;冶金学;化学工业

Prastica, R.M.S.^1 ; Maitri, C.^1 ; Hermawan, A.^1 ; Nugroho, P.C.^1 ; Sutjiningsih, D.^1 ; Anggraheni, E.^1

Civil Engineering Department, Universitas Indonesia, Kampus UI Depok, Postcode 16424, West-Java, Indonesia^1

关键词: City development;    Design flood;    Flood discharge;    Flood waters;    High probability;    Infrastructure development;    Material loss;    Synthetic unit hydrograph;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/316/1/012042/pdf
DOI  :  10.1088/1757-899X/316/1/012042

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Bojonegoro faces flood every year with less advanced prevention development. Bojonegoro city development could not peak because the flood results material losses. It affects every sectors in Bojonegoro: education, politics, economy, social, and infrastructure development. This research aims to analyse and to ensure that river capacity has high probability to be the main factor of flood in Bojonegoro. Flood discharge analysis uses Nakayasu synthetic unit hydrograph for period of 5 years, 10 years, 25 years, 50 years, and 100 years. They would be compared to the water maximum capacity that could be loaded by downstream part of Bengawan Solo River in Bojonegoro. According to analysis result, Bengawan Solo River in Bojonegoro could not able to load flood discharges. Another method used is HEC-RAS analysis. The conclusion that shown by HEC-RAS analysis has the same view. It could be observed that flood water loading is more than full bank capacity elevation in the river. To conclude, the main factor that should be noticed by government to solve flood problem is river capacity.