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Jurnal Teknik Pengairan Jurusan Teknik Pengairan Fakultas Teknik, Universitas Brawijaya Jl. MT. Haryono 167 Malang
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Jurnal Teknik Pengairan: Journal of Water Resources Engineering
Published by Universitas Brawijaya
ISSN : 20861761     EISSN : 24776068     DOI : 10.21776
Core Subject : Engineering,
Jurnal Teknik Pengairan is a scientific journal published regularly twice per year by Faculty of Engineering, Universitas Brawijaya. The paper submitted in this journal covers the fields of Water Resources Information System, Water Resources Conservation, Water Resources Utilization and Efficiency, Water Structure Engineering Planning and Water Resources Engineering Basic Knowledge. The submitted paper can be a summary of research reports or scientific literature review. The language used in this journal is either English or Indonesian.
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Articles 374 Documents
Evaluasi Kinerja Daerah Irigasi Jragung Kabupaten Demak Putri, Eka Wulandari Srihadi; Harisuseno, Donny; Purwati, Endang
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 6, No 1 (2015)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Jragung irrigation Area is located in Demak Regency has decreasedin its performance. The result of existing analysis showed that there is an imbalance of irrigation water within it. Based on its performance analysis taken from regulation of the ministry of public works No. 32/PRT/M/2007, Jragung Irrigation area has been classified as poor and requiremore attention with 66.95% working performance only. Efforts to increase its performance is by rehabilitation priority scale with following the AHP (Analytical Hierarcy Process) methods. With its main priority is Jragung Dam and Main Canal of Jragung, subsequently Teluk Secondary Canal, Sugihwaras Secondary Canal, Jragung Secondary Canal, Karangsono Secondary Canal, Ngumpul Secondary Canal, Pamongan Secondary Canal and Panjen Secondary Canal respectively. Efforts to overcome the imbalance of irrigation water is by the alteration of cropping periods from November to December and conventional cropping methods to SRI (System Rice Intensification) methods could save 53.25 % of irrigation water. Keywords : Irrigation Performance, Water Balance, AHP, Priority Scale, SRI Method
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.
Analisis Efektivitas Penambahan Kapasitas Pintu Air Manggarai Untuk Pengendalian Banjir Di Wilayah Sungai Ciliwung Anggraini, Nimas Ayu; Dermawan, Very; Purwati, Endang
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 6, No 1 (2015)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

DKI Jakarta Province consists of 5 cities and 1 district. At the north part of Jakarta there are beaches which became the estuary of 13 rivers and 2 canals. Ciliwung is the main river that has an effect on the lives of people in Jakarta. The Ciliwung river flows towards to BKB. Manggarai sluice gate is located at the upstream of BKB to control Ciliwung river flow. This study was conducted by giving two addition of Manggarai sluice gate, each dimension of additional gate is 3.4 m x 8.1 m and 5 m x 5.3 m. Discharge calculations for hydrology analysis used Log Pearson III while hydraulics analysis used software HECRAS 4.1.0. Discharge data at AWLR MT Haryono control point recorded on January 21st,2013 showed 287.876 m 3 /sec. From the data, sluice gate simulations conducted with 8 alternatives opening gates. In this study showed the most effective results for Q2th and Q5th with opening gates 2 m (alternative 4), Q10th with opening gates 4 m (alternative 5), Q20th and Q25th with opening gates 6 m (alternative 6), Q50 and Q100th with maximum gates opening (alternative 8).Keywords: Sluice Gate, Simulation, Gate Operation, Opening Gate
Kajian Penanganan Sedimentasi Sungai Banjir Kanal Barat Kota Semarang (Study of Sedimentation Mitigation West Floodway Semarang City) Prasetyo, Dani; Dermawan, Very; H., Andre Primantyo
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 6, No 1 (2015)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

For the flood control of Semarang City,one of part needed is sedimentation mitigation atthe West Floodway river. This study is carried out to predictdistribution patterns and sediment volumein the West Floodway. The simulation of existing conditions is the first step for determination of sediment transport model. The models will be used to predicting sedimentation until year 2019 and 2024 on the condition without and with sediment mitigation alternatives. Based on the existing condition simulation, the average of elevation increase in 2019 and 2024 respectively are 1,864 m and 2,210 m. The estimation of sediment volume in 2019 and 2024 respectively are 1.053.524 m³ and 1.223.693 m³. The results of sediment transport prediction with sediment pocket showing the lowest average elevation in 2019 and 2024 respectively are 1,379 m and 1,992 m.The smallest volume of sediment obtained by dredging with dredger in 2019 and 2024 respectively are 791.161 m³ and 1.099.685 m³. Based on cost estimation,the cost of dredging with dredger is the lowest, at a cost 32.267.637.478 IDR.Keyword: sedimentation, HEC-RAS, prediction, elevation, volume, cost
Studi Evaluasi Kualitas Dan Status Trofik Air Waduk Selorejo Akibat Erupsi Gunung Kelud Untuk Budidaya Perikanan Sayekti, Rini Wahyu; Yuliani, Emma; Bisri, Mohammad; Juwono, Pitojo Tri; Prasetyorini, Linda; Sonia, Fauzia; Putri, Ayu Pratama
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 6, No 1 (2015)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Selorejo dam in Malang regency has been used as a water storage and for freshwater fishery. On February 13 th 2014, Mount Kelud was erupted and produced volcanic ash which fell into the reservoir and caused an imbalanced water quality.The research was conducted in order to (a) observe a comparison between field measurement (temperature, turbidity, DO, pH, ammonia, nitrite, nitrate, total-P, Cu, Zn, Pb, Cr, and silica) and water quality standard in both upstream and middle station,(b) to determine time interval needed by each parameter to meet permitted value for freshwater fishery, (c) to determine water quality status using Pollution Index method, (d) to determine main contributors to the water pollution, (e) to determine trophic status index of Selorejo dam prior to and after the eruption, and (f) to analyze trophic status index fluctuation and pollution load capacity after the eruption.Method that was used to determine water quality status was Pollution Index. Trophic status index determined by comparing trophic status index standard on PerMenLH tahun 2009 with total-P, NO3N, chlorophyll a, and water clarity.The result from this research shows (a) before eruption, 40% of field measurement in upstream station and 28% of field measurement in middle station do not meet the standard values required. After eruption, 31% of field measurement in upstream station and 36% of field measurement in middle station do not meet the standard values required, (b) time interval needed for each parameters to meet permitted values are 111 days (pH and nitrate), 71 days (DO), 54 days (turbidity), while total-P and silica have not meet the required values up to the end of observation period, (c) water quality status in Selorejo dam on both stations are “Lightly polluted”, before and after the eruption of Mount Kelud, (d) main contributors to the water pollution on upstream station are total-P and nitrate. On middle station, the main contributors are total-P, silica, and nitrate, (e) Trophic status index of Selorejo dam is “hypereutrophic” for chlorophyll a, (f) pollution load capacity of Selorejo dam for total-P is 12.072, 58 kg P/year and has to be increased 69, 61% to 39.722, 33 kg P/year to lower trophic status index to “Oligotrophic”.Keywords: Water quality, water quality status, trophic status index, load capacity index, pollution index
Analisis Kecenderungan Sedimentasi Waduk Bili-Bili Dalam Upaya Keberlanjutan Usia Guna Waduk Achsan, Achsan; Bisri, Mohammad; Suhartanto, Ery
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 6, No 1 (2015)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Bili-Bili Reservoiris one of the large streservoirsin Province of South Sulawesi whichis regulated by BBWS Pompengan Jeneberang. Bili-Bili reservoirs was planne deffective for 50 years, recently in 2011(the reference of latest data) thi sreservoir has been in operation for13 years since was built. In 2004 there were land slides from the Mount Bawakaraeng in up stream reservoir sand causing high rates of sedimentation in the reservoir. This study was conducted to determine the percentage of sediment that settles in the reservoir storage capacity, the effectiveness of Reservoir remaining and also the efforts made to maintaining the effectiveness sof reservoirs. In this study, the distribution sediments calculations based on the actual measurement and the enlargement Empirical Area Increment Methodand Empirical Area Reduction Method. The effectiveness of use full life of BiliBili to the reservoiris calculated using volume approach hand elevation approach. Trend Sedimentation tendencywhich was entering in 2011 was about 84.81millionm 3 of total sediments with apercentage of 79.17% was in the effective storage area, 18.14% in the area of dead storageend 2.69% in the flood control pool..Based on the analysis of the effectiveness life of Bili-Bili by reservoir elevation approach of +59.00, the Bili-Bili reservoir has no longer the effectiveness, but by using the yield residualolume approachin reservoir has still effectiveness of 11.5 years.Keywords: Bili-Bili Reservoir, Sedimentation, StorageCapacity, Reservoir usefull life
Model-Model Pembangkitan Data Sintetis Untuk Curah Hujan Harian Di Wilayah Brantas Tengah Soetopo, Widandi; Limantara, Lily Montarcih; Sayekti, Rini Wahyu; Purwati, Endang; Chandrasasi, Dian; Ilham, Muhammad; Rahmadi, Agung
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 6, No 1 (2015)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

This research is for finding the suitable synthetic daily rainfall generating model in the Middle Brantas River Basin - East Java. There are 7 models being considered, 4 single-site models, (1) the two-part, (2) the transition probability matrix, (3) the resampling, and (4) the time series, and 3 multisite models, (5) the conditional, (6) the extension of single site Markov chain, and (7) the random cascade. All time-series produced by the models are then tested statistically. The results show that the differences between the historial time series and the synthetical time series are not too significant. It turn out that the synthetic time series of multisite models are better than the synthetic time series of single-site models.Keywords: generating model, synthetic data, daily rainfall.
STUDI TEKANAN ALIRAN AIRTANAH UNTUK KONSERVASI DI KECAMATAN RANOMEETO DAN RANOMEETO BARAT KABUPATEN KONAWE SELATAN PROVINSI SULAWESI TENGGARA Muhammad, Muhammad; Sholichin, Moh.; Asmaranto, Runi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 7, No 1 (2016)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Abstrak:  Airtanah yang merupakan sumberdaya alam terbarukan dewasa ini telah  menjadi barang ekonomis yang  memiliki peran yang cukup strategis. Namun saat ini  muka airtanah di sumur bor  yang tersebar di Kecamatan Ranomeeto dan Ranomeeto Barat, cenderung turun yang berakibat sebagian pompa sumur tidak bisa lagi mengisap air untuk irigasi. Penelitian ini menggunakan basic perhitungan numeric finite element dengan alat bantu sofware Model Groundwater Modelling System (GMS) 4.0. Tujuannya adalah untuk mengetahui tekanan aliran airtanah dan dampak penambahan sumur bor. Hasil hitung terhadap tekanan yang diperoleh dari permodelan GMS 4.0 membuktikan bahwa setiap penambahan 1 unit sumur terjadi penurunan tekanan sebesar 0,027 m sampai dengan 0,3 m. Tekanan airtanah terendah terjadi pada sumur P.40 KDI sebesar 8,863 m dan tertinggi pada sumur P.11 KDI nilai tekanan 45,992 m. Debit optimum pemompaan yang digunakan sebaiknya tidak melebihi 5,7 lt/det - 14,05 lt/det. Untuk mempertahankan keberadaan airtanah perlu dilakukan kegiatan konservasi berupa penghijauan pada daerah imbuhan, pembuatan sistem drainase resapan, pembangunan waduk kecil untuk menampung air hujan yang melimpas dan  pemompaan berdasarkan debit optimum.Kata Kunci : Tekanan, Airtanah, GMS 4.0, Debit Optimum, Konservasi. Abstract:  Groundwater which is a renewable natural resource today has become an economical item that has a strategic role. However, the current well groundwater levelthat was scattered in Ranomeeto and West Ranomeeto districts, tends to decrease so the well pump can no longer pump up the water for irrigation. This research uses basic numerical calculation by finite element software tools Model, it is Groundwater Modelling System (GMS) 4.0. The goal is to know the groundwater pressure and the impact of additional wells. Results from GMS 4.0 modelling shows that each additional 1 unit well was decrease pressure from  0,027 m up to 0.3 m. The lowest pressure occurs in groundwater wells P.40 KDI as 8.863 m and the highest pressure occurs at P.11 KDI as 45.992 m. The recommended optimum discharge pumping should not exceed 5,7 lt/sec - 14,05 lt/sec. To maintain the sustainability of groundwater need to do conservation activities such as reforestation in recharge areas, catchment drainage system installment, construction of small reservoirs to collect the spill rain water run off and do pumping based on optimum discharge.Kata Kunci: Pressure, Groundwater, GMS 4.0, Optimum Discharge,  Conservation
STUDI PENGARUH PERUBAHAN TATAGUNA LAHAN DI DAS MAMASA TERHADAP USIA GUNA WADUK PLTA BAKARU Sulfandi, Sulfandi; Rispiningtati, Rispiningtati; Suhartanto, Ery
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 7, No 1 (2016)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Abstrak : Di DAS Mamasa terdapat Waduk PLTA Bakaru yang beroperasi sejak Desember 1990. Dari hasil analisa Interpretasi Citra Satelit pengurangan luas hutan sebesar 7003.44 ha, padang rumput/tanah kosong 1185.61 ha, kebun 32.95 ha serta penambahan luas lahan semak belukar 5391.20 ha, tanah ladang/tegalan 1378.35 ha, pemukiman 832.92 ha serta sawah 617.77 ha. Dari Analisis AVSWAT 2000, Tingkat Bahaya Erosi tertinggi pada Subbasin 29, 33 dengan luas 981.75 ha. Dari pendekatan efisiensi jerat metode Brunne diperoleh sisa usiaguna waduk kurang dari 1 tahun, metode Churchill diperoleh kurang dari 3 tahun. Alternatif penanganan dengan bangunan check dam mampu mereduksi sedimen per tahunnya sebesar 62.72%, sedangkan Dredger 9.37 % per tahunnya. Berdasarkan prosentase reduksi sedimen alternatif Konservasi secara mekanik sebagai skala prioritas penanganan waduk.Kata Kunci:  AVSWAT 2000, Erosi, Usiaguna Waduk, KonservasiABSTRACT : There is Bakaru hydropower reservoirs in Mamasa watershed that operating since December 1990. From the analysis of satellite imagery interpretation reduction in forest area of 7003.44 ha, grassland / emptyland 1185.61 ha, 32.95 ha of gardens and additional shrubs area of 5391.20 ha, farm land / moor 1378.35 ha, residential area 832.92 ha and rice fileds 617.77 ha. Analysis of AVSWAT 2000, the highest rate Erosion Hazard subbasin 29, 33 with an area of 981.75 ha. Approach meshes efficiency Brunne method obtained remaining life of reservoirs less than 1 year, Churchill method obtained less than 3 years. Alternative treatment with check dam is able to reduce sediment per year, amounting to 62.72%, while Dredger 9:37% per year. Based on the percentage reduction of sediment mechanically conservation alternative as the priority handling of reservoirs.Keywords:  AVSWAT 2000, erosion, life time of reservoirs, conservation
STUDI EFEKTIVITAS PERBAIKAN STRUKTUR TANAH BERPASIR DENGAN METODE BIOCLOGGING DAN BIOCEMENTATION yuliani, emma
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 6, No 2 (2015)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Abstrak: Upaya perbaikan struktur tanah dengan metode biogrouting, yaitu dengan penambahan bakteri penghasil eksopolisakarida pada tanah mulai banyak diteliti. Pada umumnya proses ini melibatkan bahan kimia sebagai media pertumbuhan bakteri sehingga meningkatkan biaya yang dibutuhkan. Untuk menyelidiki tentang pemanfaatan limbah cair tahu sebagai media pertumbuhan bakteri dalam upaya perbaikan struktur tanah, maka dilakukan penelitian dengan menginokulasikan lima jenis bakteri non-patogenik (Pseudomonas sp., Nitrobacter sp., Bacillus subtilis, Lactobacillus sakei, dan Agrobacterium tumefaciens) ke dalam sampel tanah. Sebagai perbandingan digunakan media pertumbuhan kimia dan sampel tanah asli sebagai kontrol. Setelah 15 dan 30 hari pasca inokulasi bakteri ke dalam sampel tanah, dilakukan pengujian constant head, direct shear, dan SEM. Berdasarkan pengujian constant head didapatkan sampel tanah dengan inokulasi bakteri Agrobacterium tumefaciens memiliki nilai permeabilitas terendah dengan reduksi sebesar 53,62% terhadap sampel tanah kontrol pasca inokulasi selama 30 hari. Berdasarkan pegujian direct shear didapatkan sampel tanah dengan inokulasi bakteri Lactobacillus sakei memiliki nilai kuat geser tertinggi dengan prosentase kenaikan sebesar 102,74% terhadap sampel tanah kontrol pasca inokulasi selama 30 hari. Berdasarkan hasil tersebut dapat disimpulkan bahwa limbah cair tahu efektif untuk digunakan sebagai media pertumbuhan bakteri dalam proses biogrouting.Kata kunci: struktur tanah, bioclogging, biocementation, eksopolisakarida, limbah cair tahu Abstract: Biogrouting, as a method of soil structure improvement by inoculating exopolysaccharide producing-bacteria, has recently gained a lot of attention. The common media use for bacterial growth in this proccess is chemical media which cause an addition of cost. In order to examine a potential use of tofu-processing wastewater for soil structure improvement, we conducted a research by inoculating five non-pathogenic bacteria (Pseudomonas sp., Nitrobacter sp., Bacillus subtilis, Lactobacillus sakei, and Agrobacterium tumefaciens) into  soil samples. As a comparison, we used chemical medias and natural soil samples as control. After 15 and 30 d of inoculation, we examined the soil structure through constant head test, direct shear test, and SEM. Based on the constant head test, the sample with  Agrobacterium tumefaciens inoculation has the lowest permeabily value by 53,62 % reduction from control after 30 d of inoculation. Based on the direct shear test, the sample with  Lactobacillus sakei inoculation has the highest shear strenght value by 102,74 % increase from control after 30 d of inoculation.  From this study, we concluded that  tofu-processing wastewater is effective to use for soil structure improvement using biogrouting.Keywords: soil structure, bioclogging, biocementation, exopolysaccharide, tofu-processing wastewater