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All Journal Jurnal Aplikasi Teknik Sipil
Rahman Alam, Rizki Robbi
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Civil Engineering, Building, Construction & Architecture

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Perbandingan Parameter Hidraulik Perencanaan Bendung Gerak Kantelstuw Dengan Bendung Tetap Di Bendung Doorbraak, Almelo, Belanda Mediana, Chairevita Novia; A., S. Kamilia; Rahman Alam, Rizki Robbi
Jurnal Aplikasi Teknik Sipil Vol 23, No 2 (2025)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2579-891X.v23i2.22162

Abstract

Abstract— The Doorbraak Weir is located in the De Doorbraak Diversion, channeling water from the Loolee River to the Eksosche Aa River. This weir is a fixed cascade type with a height of 2.1 m, serving flood control as well as livestock and agricultural needs. The required water level is +10.5 NAP, but this is often not met during the summer because the weir crest elevation is only +10.3 NAP. To address this, a plan is proposed to convert the weir into a movable kantelstuw or tilting gate. The proposed gate has a crest elevation of +10.5 NAP, with dimensions of 0.5 m x 1.5 m and a gate base height of 0.8 m. Analysis shows that the movable weir is safer, with a Froude number of 2.5 and a jump length of 1.92 m, compared to the fixed weir. The gate operation scenario meets the minimum freeboard requirement of 0.90 m, and the levee is proven to be safe from backflow. Based on hydraulic parameter comparisons, the movable kantelstuw type weir is recommended for the Doorbraak Weir construction.
Pemodelan Perubahan Morfologi Sungai Akibat Pembuangan Lumpur Sidoarjo Pada Kali Porong Rahman Alam, Rizki Robbi; Saud, Ismail; Ansori, Fakhrudin Naufal; Ralindra, Deris Faisa; Prajitno, A. Faiz Hadi
Jurnal Aplikasi Teknik Sipil Vol 22, No 2 (2024)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2579-891X.v22i2.19613

Abstract

The continuous discharge of mud into Porong River can affect the river's capacity. Therefore, this research aims to understand Porong's River capacity after becoming a disposal site for Sidoarjo mud and to analyze its effects over the next 10 years. The methods used include the application of the Thomas Fiering method to generate rainfall data during that period. This rainfall data is then processed using FJ Mock calculations to obtain Kali Porong's discharge data. Subsequently, this river discharge data is input into the MIKE 21 application to simulate the water surface elevation in Kali Porong. The results of this study include modeling of water surface elevations that reveal the distribution of sediment deposited at various locations based on U*. An important implication of this research is that the modeling results can be used by relevant parties in managing Kali Porong's capacity as a disposal site for Sidoarjo mud until 2032. A critical finding from this study is the presence of sections with overtopping conditions on both the right and left sides of line 5, suggesting the need to raise the embankment by 2 meters on the right side and 0.5 meters on the left side to maintain the capacity and sustainability of the river. 
Co-Authors A., S. Kamilia Ansori, Fakhrudin Naufal Mediana, Chairevita Novia Prajitno, A. Faiz Hadi Ralindra, Deris Faisa Saud, Ismail