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Uji Model Fisik Kapasitas Aliran Pada Lubang Pengisian Tampungan Di Bawah Saluran Drainasi (Underdrain Box Storage) Kuncoro, Yudo Tri; Sisinggih, Dian; Priyantoro, Dwi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 4, No 1 (2013)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

This paper discusses the results of a physical modelling of drainage channel where the holes at the bottom were arranged along the channel to fill the storage underneath. This research could be the initial step to get a formulation of flow capacity through drainage channel’s orifice, and expected to push further research. The results show that it is necessary take corrections to the formulation of flow through an orifice of tank in order to estimate flow through an orifice with horizontal flow. Formulation of flow capacity through orifice with horizontal flow above can be approximated by the relationship curves between Fr (Froude) and Q 2 / (h 1 5 .g) 1/2 as well as between Fr and a/h1 2Keywords: physical modelling, flow capacity, underdrain box storage
Alternatif Penggunaan Abrupt Rise pada Usbr Tipe III Untuk Mengurangi Gejala Pulsating Waves Kristanto, Marturiawan; Priyantoro, Dwi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 2, No 1 (2011)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Maksud dari kajian ini adalah untuk mempelajari perilaku hidrolika antara pengaruh abrupt rise pada USBR III terhadap fenomena Pulsating waves dan mengetahui alternatif pemecahan permasalahan yang terjadi. Penelitian ini menggunakan fasilitas Laboratorium Hidrolika Saluran Terbuka Jurusan Pengairan Fakultas Teknik Universitas Brawijaya dan beberapa alat tambahan yang dibuat sendiri guna melengkapi proses penelitian. Pengujian pada abrupt rise dibagi menjadi 12 seri yang mana pada setiap serinya akan dialiri 5 debit yang berbeda, adapun pembagian seri dari penelitian berdasarkan variabel berubah seperti q (m3/dt/m), perubahan baffle block, perubahan twl, perubahan slope abrupt rise. Didapatkan dari hasil pengujian bahwa perubahan slope abrupt rise mempunyai pengaruh berbeda-beda terhadap kondisi aliran dan pulsating waves di kolam olak. Hasil uji seri 3 (melepas baffle block, dan memasang abrupt rise dengan kemiringan 1 : 1) menghasilkan redaman dengan effisiensi tertinggi. Kesimpulan dari hasil penelitian yang memprioritaskan pada peredaman pulsating waves ini dapat ditindaklanjuti pada uji model tes. Sehingga dapat diketahui apakah rekomendasi desain hasil penelitian ini memenuhi kriteria aman terhadap tinggi jagaan atau gerusan dan juga apakah dapat dipakai sebagai acuan dalam mendesain panjang saluran pengarah setelah hilir kolam olak.Kata kunci : Abrupt rise, pulsating waves, tail water level (twl)
Analisa Penataan Outlet Channel Sungai Karang Anyar Di Kota Tarakan Irianto, Danang Bimo; Sisinggih, Dian; Priyantoro, Dwi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 5, No 2 (2014)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Karang Anyar outlet channel has the outlets that directly flow in to the sea and it’s influenced by the tides. Flooding often occurs when rain along with high tides. The outlet channel has a very gentle slope,initial data mentioned that outlet channel length is approximately 1625 m, elevation in the upstream = +4.40 m and +0.10 m in the downstream, with an average slope = 0.003. Elevation embankment upstream = +6.00 m and downstream = +1.50 m. Meanwhile, according to secondary data, the flood with 10 th years return periode that flow in the outlet channel is 66.4 m 3 /sec and the flood with 25 th years return periode is 75.16 m 3/sec. On average, a tide water level is +1.5 m above sea level. Based on the variety of modeling, the action concepts that can eliminate the flooding are these following action: widening the channel dimension, build the embankment on channel side, making the local storage for each sub-catchment in the downstream, making the gate for the local storage, making tidal gate to prevent the tide come into the system, making the retarding basin to accommodate flood waters from upstream when the outlet is closed due to high tide.Keyword: Outlet channel, Regional arrangement, Outlet, Karang Anyar, Tarakan
STUDI POLA PENATAGUNAAN POTENSI AIR SUMBER PITU DI WILAYAH KALI LAJING SEBAGAI DASAR PENGEMBANGAN SUMBER DAYA AIR WILAYAH SUNGAI AMPRONG Haliem, Win; Juwono, Pitojo Tri; Priyantoro, Dwi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 3, No 2 (2012)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

The demand of water resource tends to increase due to the growth of population. Pitu Spring is a potential water source because it is a factor behind the idea of the utilization of non-irrigation to be used as the raw material of drink water.Result of optimization by considering the demand of irrigation water at Kedungkandang area indicates that the water stock is not enough if the Drink Water Company of Malang City is collecting standard water. The irrigation water system must be changed to SRI Method (System Rice of Intensification) because this system can save irrigation water by 48 %. The irrigation water scenario in the SRI system with the saving of irrigation water by 30% and 40 % can meet the demand of irrigation water, riparian water and standard water collection by Drink Water Company of Malang City until 2020 in constantly basis throughout year.region indicates that during rainy season, the demand of.Keywords: water resource, spring, optimization, riparian, and raw water
Perubahan Desain Dengan Uji Model Fisik Bendung Gerak Karangnongko Tahap I, Sungai Bengawan Solo Hilir Kabupaten Bojonegoro Dan Blora Chandrasasi, Dian; Priyantoro, Dwi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 6, No 1 (2015)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

The purpose of the investigation of the physical model of Karangnongko barrage Phase I is to study the hydraulics flow conditions in the river due to the influence of the barrage and to determine the capacity of the gate to control and regulate the flow rate during the dry and rainy seasons. While the objectives of this investigation hydraulics physical model is to provide suggestions for improvements of design and recommendations of design in terms of hydraulics aspects of Karangnongko barrage. Three important points that obtained from the results of testing and analysis are as follows: On each gate opening operation does not cause symptoms of vortex and directions distribution of equitable velocity both upstream and downstream of the gates; Does not occur overtopping on the upstream of barrage when the flowing of discharge Q PMF and PMF REGIONAL , because the highest water level in the barrage upstream on +41.00 and +37.30 in the river downstream when the gate is fully opened; To avoid the vortex flow in the stilling basin it is recommended that operate 9 units barrage gate with openings evenly. With details of water level in the upstream +38.00 at the beginning of the rainy season, +40.00 during the dry season, and +41.00 during the flood discharge.Key words: Karangnongko barrage dam, the physical model test, design change.
Penerapan UB-Drainage (Underdrain Box Storage) Untuk Mereduksi Genangan Dan Meningkatkan Resapan Air Di Kampus UB Priyantoro, Dwi; Juwono, Pitojo Tri; Suhardjono, Suhardjono; Ismoyo, M. Janu; Prasetyorini, Linda; Pranoto, Eko Suryo
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 4, No 1 (2013)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Underdrain Box Storage is one of the conservation drainage (eco-drainage) that can be developed for a dense residential (urban villages). Surface runoff flows into the drainage channel and the bottom were the holes are arranged along the channel as a storage function, where the base of the shelter space in direct contact with the soil is the one concept offered.Construction Underdrain Box Storage consists of open channel, vertical drain hole, and box storage. The function of open channel is received runoff in the area. Vertical drain hole is continuing drain water runoff into the box storage. And the box storage as long storage is hold runoff to fill and absorb into the ground naturally. In addition, the application of underdrain box storage is reduced runoff in Jl.Yogyakarta (Veteran) until 83,34%. This system is capable to provide infiltration until 5% for on ce rainfall within 1hour.By considering the pattern of rainfall and its duration during the last 5 years in the UB campus, then every time the rainy season UB-Drainage system is able to contribute water infiltration by 45%.Keywords: underdrain box storage, run-off, reduced, infiltration
Analisa Keruntuhan Bendungan Gondang Dengan Menggunakan Program Zhong Xing HY21 Aryadi, Eric Virgiawan; Juwono, Pitojo Tri; Priyantoro, Dwi; Asmaranto, Runi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 5, No 1 (2014)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Dam failure occured due to overtopping and piping. This can lead to rapid propagatioin of water flow so inundated the downstream of the dam. The purpose of this study was to analyze the various scenarios for the dam break. Dam Break Analysis conducted with Zhong Xing HY21 software. This study conducted the dam break analysis with overtopping and piping scenarios by insterting certain fracture parameters in order to obtain the outflow hydrograph.Gondang Dam Break greatest impact if experienced overtopping with Q Inflow 968,548 m /sec and produce Q Outflow 7671,57 m /sec. Result flood routing water level of the reservoir was located at an elevation of +40,593 (Gondang Dam Crest Elevation +42,00), so assumed the dam crest elevation of + 40,00. This flood could be trace Gondang River and flooded rice field and also the settlement area around ±73 km 2 . 3Keyword: Dam, Overtopping, Piping, Dam Break Analysis, ZhongXing HY21
Pola Pengendalian Banjir Kawasan Bambu Kuning Kota Jayapura Koyari, Elroy; Priyantoro, Dwi; Sisinggih, Dian
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 3, No 2 (2012)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Masalah yang paling sering muncul di daerah perkotaan akibat pesatnya pertumbuhan ekonomi dan pembangunan adalah masalah banjir.Tujuan penelitian ini adalah untuk menyiapkan pola dan rancangan penanggulangan banjir pada kawasan Bambu Kuning Kota Jayapura. Faktor penyebab banjir di lokasi studi, diantaranya adalah sistem drainase eksisting tidak mampu menampung debit limpasan permukaan, hal ini karena dimensi saluran drainase terlalu kecil yaitu lebar 0,3 m dan tinggi saluran 0,3 m dengan kapasitas tampungan sebesar 355m3, sedangkan volume banjir limpasan permukaan adalah 5.700 m3, selain itu tidak adanya outlet drainase dari kolam tampungan sehingga genangan meluap ke jalan raga serta adanya permukiman penduduk yang dibangun diatas kolam tampungan dengan cara menimbun kolam tampungan dengan tanah mengakibatkan kapasitas kolam tampungan berkurang dari volume 5.169 m3 menjadi 3.500 m3 Untuk itu diperlukan alternatif upaya penangan banjir di kawasan Bambu Kuning secara komprehensif meliputi normalisasi saluran dengan cara memperlebar dan memperdalam saluran eksisting, membuat saluran baru, membuat long storage channel kombinasi parafet dan gorong-gorong, dan melakukan pengerukan kolam tampungan.Kata kunci: Debit limpasan permukaan, penanggulangan banjir, normalisasi saluran, long storage channel.
Pola Penyediaan Air D.I. Tibunangka dengan Sumur Renteng pada Sistem Suplesi Renggung Kunaifi, Azwar Annas; Limantara, Lily Montarcih; Priyantoro, Dwi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 2, No 1 (2011)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

D.I. Tibunangka mempunyai luas layanan 2.284 ha yang terletak di Kabupatenlombok tengah Propinsi NTB. Pengaturan eksisting pemberian air yang ada di D.I.Tibunangka adalah pemberian air selama 5 hari pada setiap 20 hari. Akan tetapi karenapengaturan pemberian air yang ada tidak dilaksanakan dengan baik dan infrastrukturjaringan irigasi banyak mengalami kerusakan, intensitas tanam rerata yang terealisasihanya 175% dari rencana 208%.Perencanaan pola pemberian air yang dilakukan dengan pergiliran pemberian airdengan sistem golongan. D.I. Tibunangka dibagi kedalam 3 golongan yaitu hulu, tengah,dan hilir. Lalu dibagi lagi menjadi sub golongan yaitu hulu menjadi 3 golongan, tengah menjadi 2 golongan, dan hilir menjadi 3 golongan. Dari pengaturan pemberian air sistem golongan mampu meningkatkan intensitas tanam menjadi 219% atau mengalami peningkatan sebesar 44%. Sedangkan perencanaan sumur renteng dibuat dalam 2 skenarioyaitu skenario pertama, sumur langsung mengambil air dari saluran sekunder. Skenario kedua, selain sumur mengambil langsung dari saluran sekunder tetapi ada juga sumur yang dihubungkan dengan pipa secara seri untuk pengisiannya. Skenario pertama didapatkan waktu pengisian sebesar 4,7 hari dan skenario kedua sebesar 4,5 hari. Selanjutnya dipilih skenario yang kedua untuk penentuan penambahan intensitas tanam. Skenario kedua yang dioperasikan untuk mengairi tembakau pada musim kering, didapatkan luas layanan yang mampu disuplai sumur renteng sebesar 100,81ha atau kenaikan intensitas tanamnya menjadi 223,41%.. Selain berguna untuk pengairan pada musim kemarau, diharapkan adanya sumur renteng mampu memberikan nilai lebih untuk konservasi air dan tanah dilokasi studi.Kata kunci: Sistem Golongan, Sumur Renteng, dan Intensitas Tanam.
Alternatif Penggunaan Abrupt Rise pada Peredam Energi Bendungan Kresek-Madiun Jawa Timur (Model Fisik Skala 1:50) Suprijanto, Heri; Priyantoro, Dwi; Fajar, Nurul
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 2, No 1 (2011)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Perilaku hidraulik lebih mudah diidentifikasikan dengan uji model fisik. Oleh karenanya, uji model hidraulika pada peredam energi bendungan Kresek, bertujuan untukmengetahui kinerja hidraulika dan efektifitas peredaman energi. Penelitian dimulai dengan pembuatan model fisik peredam energi dari seri 0, seri 1dan seri 2 dengan skala model tanpa distorsi 1:50. Hasil model menunjukkan didapatkan nilai kedalaman konjugasi untuk seri 0 berturut-turut mulai debit 2, 100 dan 1000 tahun sebesar 8,456 m, 9,087 m dan 9,950 m , seri 1 sebesar 8,033 m, 9,667 m dan 10,150 m ,seri 2 sebesar 8,5 m , 9,5 m dan 10,22 m. Nilai efektifitas energi untuk seri 0 berturut-turut mulai debit 2, 100 dan 1000 tahun sebesar sebesar 45,859 % , 49,155% dan 41,951% , seri1 sebesar 48,708 % , 50,713% dan 43,131% , seri 2 sebesar 45,875% , 46,088% dan43,199%. Dan untuk pengendalian debit PMF, peredam energi seri 2 merupakan peredam energi yang mampu mengendalikan debit PMF, dengan syarat menambahkan tinggi dinding peredam energi menjadi 12,64 m.Kata Kunci : model fisik, peredam energi, kedalaman konjugasi