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All Journal JURNAL SIPIL STATIK JURNAL ILMIAH MEDIA ENGINEERING TEKNO Jurnal Teknik Sipil Terapan Jurnal Teknik Sumber Daya Air Jurnal Riset Rumpun Ilmu Teknik (JURRITEK)
Liany Amelia Hendratta
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Social Sciences Transportation

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Journal : JURNAL ILMIAH MEDIA ENGINEERING

 1 
Analisis Neraca Air Sungai Tondano dan Optimalisasi Pemanfaatannya Susilo, Dewi M. M.; Sumarauw, Jeffry S. F.; Hendratta, Liany Amelia
JURNAL ILMIAH MEDIA ENGINEERING Vol 7, No 3 (2017): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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Abstract

Water is an essential natural resource, much needed by humans and other living beings.It is transformed through the hydrological cycle. As a hydrological system, the Tondano River receives input in the form of rainfall and then processes it according to its characteristics into flow. The infiltrated water will rise again by the capillary force, moving horizontally as an interflow or vertically percolating to the aquifer layer that also flows as the baseflow. Water which is not restrained at ground level and also not infiltrated will become overland flow. In the end these three streams will enter the river as a stream / river flow. Thus the river is a joint point between overlandfl ow, interfl ow, basefl ow and rainwater that directly fall on the river body.               In line with the increasing number of population and the development of economy and industry, there is also increasing demand for water for various purposes (mainly for domestic, urban and industrial, irrigation, electricity, tourism and environment). On the other hand, the availability of water is still fixed so that the conflict of interest in water consumption has begun. This situation if allowed to drag on will interfere with people's life and national development in general. To anticipate this, it is necessary to manage water distribution at river level or even between river areas, comprehensively and integrated. Given the complexity of this water allocation system, the assistance of a computer model for water allocation, which is not only used in the planning stage, but also operationalally to assist water managers as a decision support system.                Water balance analysis is a part of water resource development activities, while water balance is a general description of the condition of water availability and its allocation in an area in the last 10 years. Water balance analysis is useful in the prevention of drought in the dry season.       Tondano river basin consists of several rivers. This study aims to determine the amount of water availability and water demand and optimization of its utilization in the river tondano            Optimization and water allocation in this study using secondary data in the form of debit mainstay and wide catchment area with software DSS ribasim            Results revealed that: - total water demand in Tondano River 1.38 m³ /sec.; total water availability in Tondano River is 0.93 m³ / sec.; The need for water and its allocation is for Irrigation Area, PLTA, PDAM.;Irrigation area is 100% fulfilled for DI Noongan, DI Kulo, DI Kinidow, IN Doud Sukur and DI Ranoweleng.; Hydroplasses of 774% of old tonsea, PLTA Tanggari 1 of 61.2%, PLTA Tanggari 2 by 47%.; PDAM Tondano at 100% availability, Manado PDAM at 100% availability. Keywords: water Balance, Tondano river , DSS ribasim, water availability, water demand
Kajian Efektivitas Pengendalian Banjir di DAS Torosik Jansen, Dave; Jansen, Tommy; Hendratta, Liany Amelia
JURNAL ILMIAH MEDIA ENGINEERING Vol 7, No 3 (2017): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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The catchment area of Torosik River exists in Pinolosian Bolaang Mongondow region, often make flooding in society area because the discharge flooding is more than Torosik River capacity. The reduction of flood discharge is carried over with river flowing of Torosik reach in existing condition and the exist of retention pond in upstream part of river and river normalization in downstream part, using HMS and HEC-RAS computation tools. The peak outflow of one retention pond results 88.5 m3/sec, two retention pond results 86.9 m3/sec, and 93.3 m3/sec for existing condition. River flow simulation of river normalization condition results average water surface level 12m , and existing condition results average water surface level 13m. The reduction of flood discharge in existing condition and the exist of two retention pond result 6.4 m3/sec, if it is conversed to the height of water surface with constant velocity then get the height of water is just 0.5m.The river normalization result of discharge reduction more than the exist of retention pond of the Torosik catchment area.  Keywords: watershed,, catchment area, flood discharge, peak discharge, HMS-HECRAS.
Kajian Ketersediaan Air di DAS Sangkub Untuk Berbagai Perkembangan Di Kecamatan Sangkub Kabupaten Bolaang Mongondow Utara Panelewen, Vivienne; Soekarno, Soekarno; Hendratta, Liany Amelia
JURNAL ILMIAH MEDIA ENGINEERING Vol 7, No 3 (2017): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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Abstract

The utilization of water resources as material for the provision of raw water and for the provision of clean water were continues to increase from year to year in line with the development of population, industrial development and the development of settlements within a region.Sangkub Sub-district is one of the developing sub-districts in North Bolaang Mongondow District, among others irrigation areas (DI) which continue to develop for the former land of forests, plantation of fields, all the land as potential land, now had  turned into functional areas, such as rice fields, fishery and livestock, where formerly this areas are or in the form of forest, now has turned into transmigration settlement area, where lands originally in the form of plantation and now  had turned into urban settlement area. The initial activities of the community which originally farm coconut plantations, cultivate intercropping and as fishermen then now tend to move towards the industry, such as making rice mill, and various home industry activities, the people used shallow water nowadays people tend to consume clean water from District’s Clean Water Company (PDAM) and the like.Considering  the development of population, changes in community activity and the development of the city of Sangkub Sub-district, it can be expected that for the future water needs, both the needs of raw water and water needs for the provision of clean water in the District Sangkub will increase. The reliable water source in Sangkub Sub-district is Sangkub Watershed.. It is expected that in the future Sangkub Watershed will be the source of raw water supply and water supply in Sangkub sub-district. Realizing that the availability of water is determined by the climate / weather in Sangkub Subdistrict, when is the rainy season and when the dry season, then how big is the cumulative depth of rain falling in the Sangkub watershed?. Therefore it is expected from the results of this study can be used as a guide for further research in order to maintain the preservation of water availability in the Sangkub watershed.The aims of this study is to assess the availability of water resources as a material in the Sangkub watershed by calculating the availability of water (reliable waterfall) and then analyzing the water needs for various purposes at present and future water needs.  In completing this study thoroughly, it requires several stages of analysis of available data. The data used include secondary data, as follows: 1). Daily rainfall data from 2008 to 2016. 2). Watershed Map  of Sangkub and river network. 3). Land use maps are used to determine land use in the study area. 4). The rain station data is the location of the rain station administration and the coordinates of the rain station. Data processing: 1). The average monthly rainfall data from the three rainfall observation stations will be processed into discharge data by the NRECA method. 2). Calibrate the value of debit calculation results with the value of the observation debit. 3). Calculate the mainstay debit with Weibull method. 4). Calculating the availability of water in the Sangkub watershed. 5). Calculating the water requirement on the Sangkub Watershed for various purposes.  The mainstream debit is obtained by sorting the monthly debit from a large sequence of small-scale accuracy and can be calculated by the formula (Standart irrigation planning). Based on the analysis and data calculation results, it could be concluded as follows: Water availability in Sangkub watershed; January; 17,4826m³ / s. February; 11,0556 m³ / s. , March; 10.9789 m³ / s. , April; 10,2648 m³ / s. , in May; 9'4232 m³ / s. , June; 7.7551 m³ / s. , July; 7.7551 m³ / s. , August; 6,4390 m³ / s. , September ; 5,5245 m³ / s. , October ; 6,4959 m³ / s. , November; 6,9829 m³ / s. , December; 13,1474 m³ / s. At the main discharge conditions 80% water use is prioritized for the needs of the population (domestic and non-domestic purposes). The calculation of water use for Irrigation is not predicted to increase in this study considering the minimum availability of water from the analysis, so it can no longer extend the functional area (± 1300 ha) that already exist.Keywords: Water Balance ,irrigation area, watershed, NRECA method,  Weibull method, debit
ANALISIS PENGARUH BACKWATER DI MUARA SUNGAI TALAWAAN-BAJO KABUPATEN MINAHASA UTARA La'la, Monica; Hendratta, Liany A.; Supit, Cindy J.
JURNAL ILMIAH MEDIA ENGINEERING Vol 10, No 2 (2020): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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Sungai Talawaan-Bajo di Kabupaten Minahasa Utara pada musim penghujan pernah meluap di muara pantai Talawaan-Bajo. Luapan air ini disebabkan oleh curah hujan yang tinggi serta pengaruh pasang surut di sungai Talawaan-Bajo. Analisis pengaruh pasang surut dan backwater yang terjadi di sungai tersebut perlu dilakukan untuk mengantisipasi banjir yang kemungkinan akan terjadi kelak.Analisis frekuensi hujan menggunakan Metode Log Pearson III dengan bantuan Program HEC-HMS dengan metode HSS SCS. Debit banjir dianalisis dengan program HEC-HMS menggunakan parameter terkalibrasi. Debit puncak hasil simulasi untuk setiap kala ulang digunakan untuk mensimulasi tinggi muka air pada penampang menggunakan program HEC-RAS. Simulasi dibuat dengan kondisi pasang surut terendah dan debit terkecil, pasang surut terendah dan debit terbesar, pasang surut tertinggi dan debit terkecil, dan pasang surut tertinggi dan debit terbesar. Metode Tahapan Langsung dan Metode Tahapan Standart akan digunakan untuk melihat profil muka air banjir sungai Talawaan-Bajo.Penelitian menunjukkan besarnya debit puncak pada kala ulang 5, 10, 25, 50, dan 100 tahun adalah 68,8 m3/det, 102,6 m3/det, 154,6 m3/det, 204,9 m3/det, dan 263,8 m3/det. Analisis HEC-RAS pada kondisi tanpa pasang surut untuk kala ulang 5 tahun, penampang sungai sudah tidak mampu menampung debit banjir sejak STA 0+45. Pada kala ulang 100 tahun sudah tidak mampu menampung debit banjir sejak STA 0+25. Kondisi dengan pengaruh pasang surut untuk kala ulang 5 dan 100 tahun seluruh tinggi muka air sudah melampaui tinggi penampang sungai dengan nilai antara 0,08-1,47 meter. Luapan cenderung terjadi ke arah bantaran kanan sungai.Analisis tinggi muka air dengan metode tahapan langsung mendapatkan selisih pengaruh backwater pada kondisi pasang surut terendah dan pasang surut tertinggi untuk debit terkecil antara 1,47–2,48 m, sedangkan untuk debit terbesar antara 0,7–1,49 m. Analisis yang sama dilakukan dengan metode tahapan standart mendapatkan hasil 0,63–1,2 m dan 0,07–0,35 m. Kedua metode ini menunjukkan pengaruh backwater lebih besar terjadi pada kondisi debit terkecil dibandingkan dengan debit terbesar. Fenomena ini terjadi karena debit yang kecil memungkinkan masuknya sejumlah aliran balik menuju sungai. Hasil analisis metode tahapan standart menunjukkan perbedaan yang kecil dengan HEC-RAS sehingga dapat direkomendasikan sebagai alternatif penggunaan program HEC-RAS dalam menganalisis profil muka air. Kata kunci:  Backwater, HEC-HMS, HEC-RAS, Profil Muka Air, Metode Tahapan Langsung, Metode Tahapan Standart
PENGEMBANGAN POTENSI SUNGAI NUNUK SEBAGAI PEMBANGKIT LISTRIK TENAGA MINIHIDRO (PLTM) DI KAWASAN AIR TERJUN PONIKI KABUPATEN MINAHASA TENGGARA Mamahit, Donny; Supit, Cindy J.; Hendratta, Liany A.
JURNAL ILMIAH MEDIA ENGINEERING Vol 10, No 2 (2020): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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Energy fosil masih menjadi sumber energy/bahan bakar bagi sebagian besar pembangkit listrik di Indonesia meskipun penggunakan sumber energi yang berasal dari energi terbarukan mengalami peningkatan jumlahnya. Indonesia memiliki kekayaan sumber daya alam khususnya energy baru terbarukan, walaupun demikian masih banyak potensi energy baru terbarukan yang belum dioptimalkan termasuk di Kabupaten Minahasa Tenggara yang memiliki potensi pembangkit listrik skala kecil seperti di kawasan air terjun Poniki.Maksud penelitian ini adalah untuk mengetahui berapa besar debit yang dihasilkan sungai Nunuk di Kawasan air terjun Poniki, Tinggi jatuh efektif, tata letak serta desain awal bangunan sipil PLTM.metode penelitian yang digunakan ialah survey langsung untuk memperoleh data primer dan sekunder dalam rangka menganalisa lebih lanjut pengembangan pembangkit listrik skala kecil.Hasil perhitungan menunjukkan bahwa Debit sesaat pada musim normal 2,54 m3/dt. Debit rencana ditetapkan 2,1 m3/dt untuk merencanakan bangunan bendung, Intake, saluran penghantar dan bak penenang. Sedangkan pipa pesat dan daya turbin menggunakan debit 1,376 m3/dt, tinggi jatuh efektif sebesar 21,3 m dengan potensi daya listrik sebesar 183,7 KW. Turbin yang digunakan adalah jenis turbin Crossflow dengan Generator tipe asinkron. Kata kunci: Debit, Tinggi Jatuh, Energi, PLTM
Co-Authors . Sukarno Abdul Karim, Intan A. N. S. Adare, Demetrius R. Ch. Alex Binilang Ardianto, Billy Prima Ariestides K. T. Dundu Bimo A. S. Wonggo Cindy J. Supit Dave Steve Kandey Dave Steve Kandey, Dave Steve Davy Ivan Robert Jansen Dennis Paul Tambingon, Dennis Paul Djokja, Syalia Ayu Fitriana Dwi Tirta Yudha Gaib, Dwi Tirta Yudha Eveline M. Wuisan Firdaus Fuad Halim Gaghana, Marleve Ighnatius Sasundung I. S. Gerald C. A. Nayoan Gloria A. Palit Hanny Tangkudung Hendra Riogilang Iroth, Angelia Isa, Mohamad Isri R. Mangangka, Isri R. Jeffry Swingly Frans Sumarauw Jeremia R. R. Oroh Jimmy Y. Kalumata Kalangi, Peni Patricia Kamase, Malinda Kapoh, Sharon Beatrix Karina, Farah Vida Kristoffel R. P. Kapoh La'la Monica Lagoari, Meyvi C. Lahamendu, Victor Christofel Lalamentik, Tesalonika Catharina Lambertus Tanudjaja Lumowa, Thessalonika S. G. Makasaehe, Deborah Mamahit, Donny Mambu, Venezia Syaloom Manansang, Merry Kristin Manengkey, Arsita Maria Monica, La’la Moningka, Frederiko Marchiano Imanuel Ni Kadek A. F. C. E. Subagia, Ni Kadek A. F. C. E. Olivia M Tumurang Pagayang, Enjelia Tasya Panelewen, Vivienne Pantungan, Ferdinand R. Pingkan Esterina Tampanguma, Pingkan Esterina priskila Perez Mosesa, priskila Perez Raco, Maria Gloria Raden G. Rompas Rahelga F. E. Rembet Riogilang, Herawaty Roski R.I. Legrans Rurung, Muhammad Alriansyah SATRIYAS ILYAS Shawn D. Kairupan Simaremare, Ivana W. Soekarno Soekarno Sondak, Scrivily Witsly Sukarno, David Endro Tomici Suma, Muayyad Feisal Sumardi, Mirza Arrazy Susilo, Dewi M. M. Tamboto, Yonathan Tampubolon, Eden Taslim, Febrian Thambas, Arthur Harris Tiny Mananoma Tommy Jansen, Tommy Topah, Renaldo F. Tulandi, Andre Felix Viralsia Ivana Kundimang, Viralsia Ivana Wulandarry D. Harundja