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All Journal Cerdika: Jurnal Ilmiah Indonesia ETERNITAS
Neka, Marianus Andre
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Humanities Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Public Health Social Sciences Transportation

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ANALISA HIRDOLIS PADA JARINGAN TRANSMISI AIR BERSIH SPAM BONLEU KECAMATAN TOBU, KABUPATEN TIMOR TENGAH SELATAN Neka, Marianus Andre; Pattiraja, Agustinus Haryanto; Manubulu, Chstiani Chandra
Eternitas: Jurnal Teknik Sipil Vol 3 No 2 (2024): ETERNITAS: Jurnal Teknik Sipil, Vol 3, No 2 April 2024
Publisher : Program Studi Teknik Sipil Universitas Katolik Widya Mandira

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30822/eternitas.v3i2.4226

Abstract

Water is a basic need for human life, where its availability and optimal distribution play an important role in improving people's welfare. One of the water sources that is commonly used is groundwater. Based on data from the Central Statistics Agency of East Nusa Tenggara in 2018, there are 2,576 groundwater springs in the province, with 666 of them in South Central Timor Regency. However, challenges in the clean water distribution system, such as limited access and difficult geographical conditions, often hinder the fulfillment of water needs for the community. This study aims to analyze the hydraulic conditions of the clean water transmission network at SPAM Bonleu, Tobu District, South Central Timor Regency. The research methods include literature studies, data collection through field studies, data processing using AutoCAD Civil 3D, EPACAD, and EPANET V2.0 software, as well as hydraulic analysis of pressure, flow velocity, and head loss in the transmission network. The modeling results show that the pressure in the network is greater than the required standard, which is more than 250 m of water column. The flow velocity meets the minimum standard of 0.3 m/s, while the head loss is within the permitted limit, which is not less than 10 m/km. However, there is one parameter that does not meet the requirements, so further evaluation is needed for system optimization
Analisis Laju Sedimentasi Sungai Benenain dan Pengaruhnya Terhadap Kondisi Banjir pada Ruas Hilir Sungai Benenain Provinsi Nusa Tenggara Timur Neka, Marianus Andre; Chaidar, Ana Nurganah
Cerdika: Jurnal Ilmiah Indonesia Vol. 6 No. 5 (2026): Cerdika: Jurnal Ilmiah Indonesia
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/cerdika.v6i5.3486

Abstract

Sungai Benenain merupakan salah satu sungai utama di Provinsi Nusa Tenggara Timur yang memiliki potensi sedimentasi tinggi akibat kondisi topografi daerah aliran sungai yang bervariasi antara wilayah hulu dan hilir. Proses sedimentasi pada ruas hilir menyebabkan pendangkalan dasar sungai, perubahan morfologi alur, serta penurunan kapasitas tampung sungai yang berdampak terhadap peningkatan potensi banjir. Penelitian ini bertujuan untuk menganalisis laju angkutan sedimen, perubahan morfologi sungai, serta pengaruhnya terhadap kondisi banjir pada ruas hilir Sungai Benenain selama periode 2019–2023. Metode penelitian menggunakan pendekatan kuantitatif melalui analisis hidraulik, analisis angkutan sedimen, serta pemodelan hidrodinamika satu dimensi dan dua dimensi menggunakan perangkat lunak HEC-RAS. Data penelitian meliputi data debit, tinggi muka air, sedimen dasar, sedimen layang, dan Digital Elevation Model (DEM). Hasil penelitian menunjukkan bahwa peningkatan debit aliran menyebabkan tegangan geser dasar melampaui tegangan geser kritis sehingga meningkatkan laju transport sedimen. Distribusi kecepatan dan shear stress pada tikungan sungai tidak merata, yang menyebabkan erosi pada sisi luar tikungan dan deposisi pada sisi dalam tikungan. Perubahan morfologi sungai berupa agradasi dan degradasi dasar sungai mengakibatkan penurunan kapasitas aliran pada ruas hilir sehingga meningkatkan risiko banjir. Penanganan berupa kombinasi bangunan krib dan riprap dinilai efektif dalam mengurangi erosi dan meningkatkan kestabilan morfologi sungai.
Co-Authors Chaidar, Ana Nurganah Manubulu, Chstiani Chandra Pattiraja, Agustinus Haryanto