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All Journal Jurnal Teknik Pengairan: Journal of Water Resources Engineering Pangripta Jurnal Ilmiah Kajian Perencanaan Pembangunan
Ivan, Hans
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Humanities Economics, Econometrics & Finance Engineering Social Sciences

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MODEL SIMULASI JARINGAN PIPA DAN PENENTUAN TARIF AIR MINUM DI KECAMATAN KEPANJEN KABUPATEN MALANG Haribowo, Riyanto; Nurdiansyah, Irfan; Ivan, Hans; Daniswara, Demas Trihatma
PANGRIPTA Vol. 2 No. 1 (2019): Pangripta Jurnal Ilmiah Kajian Perencanaan Pembangunan
Publisher : Badan Perencanaan Pembangunan Kota Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58411/z8m5ap63

Abstract

Sumber Dieng merupakan sumber yang dikelola oleh PDAM Kabupaten Malang yang mempunyai debit sebesar 150 lt/dt dan akan direncanakan untuk suplai air bersih ke 3 desa yaitu Desa Kemiri, Sukorejo dan Sukoraharjo melalui Tandon Dieng. Tujuan dari studi ini adalah untuk mengetahui berapa kebutuhan air bersih, bagaimana kondisi hidraulis jaringan pipanya dan juga kelayakan ekonomi untuk pelaksanaannya. Perhitungan kebutuhan air dan persyaratan teknis jaringan perpipaan berdasarkan peraturan yang berlaku. Sedangkan untuk analisa hidraulik menggunakan bantuan program WaterCAD V8i. kelayakan ekonomi dihitung berdasarkan 3 kriteria yaitu Net Present Value (NPV), Internal Rate of Return (IRR), serta Benefit Cost Ratio (BCR). Dari hasil analisa diperoleh total kebutuhan air rata-rata yang dibutuhkan sebesar 17,90 lt/dt dan distribusi air bersih untuk 3 desa dapat terlayani 100% baik untuk kebutuhan rata-rata maupun pada jam puncak. Rencana anggaran biaya total untuk 3 desa yaitu sebesar Rp.2.970.769.637. Analisa Ekonomi pada tingkat suku bunga 9,75% didapatkan periode pengembalian selama 6 tahun dengan harga air Rp. 1500/m3
Assessment of the Pelangwot-Sedayu Lawas Floodway Capacity for Managing Floods in the Lower Bengawan Solo River Amalia, Dewi; Sumiadi, Sumiadi; Dermawan, Very; Ivan, Hans
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 15 No. 2 (2024)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2024.015.02.7

Abstract

The Pelangwot-Sedayu Lawas floodway is the main infrastructure for a flood control system in the Lower Bengawan Solo. However, frequent flooding still occurs in the Turi and Kali Tengah subdistricts of Lamongan Regency. Therefore, the number of emergency gates in the floodway has been increased. An important aspect of this flood control is ensuring that, despite the increase in capacity of the Pelangwot-Sedayu Lawas floodway gates, the water surface elevation at Pelangwot does not lead to overflow and that the floodway channel from Pelangwot to Sedayu Lawas effectively conveys the maximum discharge. This study aims to assess the capacity of the emergency gates to convey a flood discharge of 1000 m³/s and the capability of the floodway channel to accommodate flows from both the emergency gates and outlet of Jabung Retarding Basin, which amounts to 1140 m³/s. The analysis of floodway capacity involves calculating the discharge through five floodway gates and simulating the floodway channel to manage flood discharge using the HEC-RAS 5.0.7 software. Results indicate that with a gate opening of 5 m, the five gates can discharge 1000 m³/s at a water surface elevation of +7.03 masl, reducing floods by 32.09%. To improve capacity, the embankment must be elevated by 1.0 meters, with a crest width of 4.00 meters along the left bank for 4.4 km and the right bank for 4.35 km. These modifications are essential to enhance flood management and protect downstream areas.
Assessment of the Pelangwot-Sedayu Lawas Floodway Capacity for Managing Floods in the Lower Bengawan Solo River Amalia, Dewi; Sumiadi, Sumiadi; Dermawan, Very; Ivan, Hans
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 15 No. 2 (2024)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2024.015.02.7

Abstract

The Pelangwot-Sedayu Lawas floodway is the main infrastructure for a flood control system in the Lower Bengawan Solo. However, frequent flooding still occurs in the Turi and Kali Tengah subdistricts of Lamongan Regency. Therefore, the number of emergency gates in the floodway has been increased. An important aspect of this flood control is ensuring that, despite the increase in capacity of the Pelangwot-Sedayu Lawas floodway gates, the water surface elevation at Pelangwot does not lead to overflow and that the floodway channel from Pelangwot to Sedayu Lawas effectively conveys the maximum discharge. This study aims to assess the capacity of the emergency gates to convey a flood discharge of 1000 m³/s and the capability of the floodway channel to accommodate flows from both the emergency gates and outlet of Jabung Retarding Basin, which amounts to 1140 m³/s. The analysis of floodway capacity involves calculating the discharge through five floodway gates and simulating the floodway channel to manage flood discharge using the HEC-RAS 5.0.7 software. Results indicate that with a gate opening of 5 m, the five gates can discharge 1000 m³/s at a water surface elevation of +7.03 masl, reducing floods by 32.09%. To improve capacity, the embankment must be elevated by 1.0 meters, with a crest width of 4.00 meters along the left bank for 4.4 km and the right bank for 4.35 km. These modifications are essential to enhance flood management and protect downstream areas.
Co-Authors Daniswara, Demas Trihatma Dewi Amalia Nurdiansyah, Irfan Riyanto Haribowo Sumiadi, Sumiadi Very Dermawan