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All Journal Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter Jurnal Teknik Sumber Daya Air Aceh International Journal of Science and Technology Jurnal Teknik Sipil
Maimun Rizalihadi
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Engineering Environmental Science Transportation Other

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Study the Efficiency of Irrigation in Rice Field Efforts to Increase Rice Yield in Irrigation Area Krueng Jrue Rahmi Putri Yanti; Alfiansyah Yulianur; Maimun Rizalihadi
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 2, No 2 (2012): Engineering
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (331.087 KB)

Abstract

Irrigation water management problems will arise if there is a shortage of waterin rice fields. Shortage of water in rice fields can be evaluated by the efficiency of existing irrigation.Based on the Indonesian‟s irrigation design criteria 65%, the project efficiency for Irrigation Planning is 65%. This value when compared to some countries in Asia was still much greater. This might be caused by undeterminating the water losses in the rice field. The study aims to determine the efficiency of irrigation in rice fields (Field Application Efficiency) is actually through direct measurements in the field, started at the land preparation up to the growth of rice plants. Measurements were taken at one tertiary JKr21Kr in Krueng Jreue Irrigation Region. To evaluate the efficiency of irrigation in ricefields used two methods of measurement. Inflow-outflow method for measuring the delivery of irrigation water in rice fields (Vf) which use the modified pipes that serves as the entrance and exit of water in the tertiary, the difference between incoming water and outgoing water is the amount of water used in rice fields. Water balance in the field is measured using Drum technique method with a diameter of 50 cm and height 125 cm. The drums are planted in the ground and a quarter of the height of the drum located above thesurface. By this equipment, the evapotranspiration parameters, percolation and effective rainfall can be obtained. These results showthat the efficiency of irrigation in rice fields (Ea) of 65.29%. It means that actually the project efficiency is 42.44% far below than Indonesian‟s criteria.
Hydrological Response Unit Analysis Using AVSWAT 2000 for Keuliling Reservoir Watershed, Aceh Province, Indonesia . Azmeri; Alfian Yulianur; Maimun Rizalihadi; Shafur Bachtiar
Aceh International Journal of Science and Technology Vol 4, No 1 (2015): April 2015
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1040.432 KB) | DOI: 10.13170/aijst.4.1.2317

Abstract

Sediments deposition derived from the erosion in upstream areas can lead to river siltation or canals downstream irrigation. According to the complexity of erosion problem at Keuliling reservoir, it is essential that topography, hydrology, soil type and land use to be analyzed comprehensively. Software used to analyze is AVSWAT 2000 (Arc View Soil and Water Assessment Tools-2000), one of the additional tool of ArcView program. The results obtained are the watershed delineation map, soil type map to produce soil erodibility factor (K) which indicates the resistance of soil particles toward exfoliation, land use map to produce crop management factor (C) and soil conservation and its management factors (P). Hydrology analysis includes soil type, land use and utility for the erosion rate analysis through Hydrologic Response Unit (HRU). The biggest HRU value of sub-basin is on area 5 and the lowest one is on area 10. All four HRU in sub-basin area 5 are potentially donating high value for HRU. In short, this area has the longest slope length so that it has a large LS factor. About 50% of the land was covered by bushes which gain higher C factor rather than forest. Moreover, it has contour crop conservation technique with 9-20 % declivity resulting in having dominant factor of P. Soil type is dominated by Meucampli Formation which has soil erodibility factor with high level of vulnerable toward the rainfall kinetic energy. All in all, the vast majority of HRU parameters in this sub-basin area obtain the highest HRU value. Hydrology analysis, soil type, and use-land are useful for land area analysis that is susceptible to erosion which was identified through Hydrologic Response Unit (HRU) using GIS. As the matter of fact, spatially studies constructed with GIS can facilitate the agency to determine critical areas which are needed to be aware or fully rehabilitated.
PEMODELAN FISIK BENDUNGAN UNTUK PENGAMATAN GARIS FREATIS BERDASARKAN KEMIRINGAN LERENG SEBELAH HULU Azmeri Azmeri; Maimun Rizalihadi; Rima Vinanda
JURNAL TEKNIK SIPIL Vol 3, No 1 (2013): Jurnal Teknik Sipil Volume 3, Nomor 1, September 2013
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

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Abstract

Seepage problems that often appeared on a main-dam. The purpose of this study is to observe the flow pattern of phreatic line that occur on the dam body and to count the seepage discharge that come about. This research was conducted using the seepage body model that made from yellowish clay with 70 % levels of density and had 4,9 x 10-7 permeability values which variating upstream slope angle. The amount of upstream slope angle that variated was 41,15°, 46,29°, and 52,74°, whereas the downstream was 50,33°. This model test research utilized 10 mm thick glass vassel with 180 cm length, 44 cm width, and 68 cm high as well as 1 : 25 scale from the old researcher. This research had 3 high water catchment variations, those were 35 cm, 45 cm, and 55 cm. In this research, in the 41,15°, 46,29°, and 52,74° upstream slope angle, only in the 55 cm water catchment condition that meet Cassagrande Method. The amount of discharge produced from the calculation and physical modelling each for are for 41,15°, 46,29°, 52,74° was 6,01 x 10-6 cm3/det and 7,96 x 10-6 cm3/det, 5,37 x 10-6 cm3/det and 7,21 x 10-6 cm3/det, 5,81 x 10-6 cm3/det and 7,65 x 10-6 cm3/det. The discharge differenciation from the calculation result and the research showed that calibration modeling is not yet perfect. The result, obtaining from this study represented that the dam body condition accompanied by variating the upstream slope angle also affects the size of the seepage that occurs.
Pembaharuan Pola Pengoperasian Waduk Sianjo-Anjo Akibat Peningkatan Laju Sedimen dan Variabilitas Aliran Zahrah, Nurrul; Azmeri; Maimun Rizalihadi
Jurnal Teknik Sumber Daya Air Vol. 3 No. 2 (Desember 2023)
Publisher : Himpunan Ahli Teknik Hidraulik Indonesia (HATHI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56860/jtsda.v3i2.87

Abstract

Waduk berperan penting dalam memastikan keberadaan air untuk memenuhi kebutuhan air di hilirnya. Keberadaan waduk dapat mengurangi variabilitas temporal terhadap aliran melalui pengaturan outflow air waduk. Pada penelitian ini sistem pengoperasian Waduk Sianjo-anjo untuk menyuplai kebutuhan air baku. Sistem pengoperasian waduk harus optimal agar penggunaan air sesuai dengan kebutuhan daerah pelayanan. Metode pengoperasian waduk dianalisis menggunakan teknik optimasi dengan program non linier. Optimasi pengoperasian waduk ditujukan untuk meminimalkan deviasi (outflow-kebutuhan air) dalam pengoperasiannya. Berdasarkan hasil optimasi pengoperasian Waduk Sianjo-Anjo dengan menggunakan Tool Solver pada Microsoft Excel didapatkan rata-rata outflow saat tahun kering sebesar 552.534,16 m3, saat tahun normal didapatkan rata-rata outflow sebesar 998.071,34 m3, dan saat tahun basah didapatkan rata-rata outflow sebesar 1.632.488,80 m3. Dengan demikian pengoperasian Waduk Sianjo-Anjo menghasilkan lebih besar atau sama dengan 100% keandalan untuk dapat memenuhi kebutuhan air baku yang dapat menyeimbangkan dengan kebutuhan air baku dan tampungan waduk.
Co-Authors . Azmeri, . Ahmad Ihya Shalihin Alfian Yulianur Alfiansyah Yulianur Muhammad Fauzi Nina Shaskia Rahmi Putri Yanti Rima Vinanda Shafur Bachtiar Zahrah, Nurrul