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ANALISIS KAPASITAS SALURAN DRAINASE DAN PENANGANAN BANJIR DI JALAN BUMI AYU DESA SANUR KECAMATAN DENPASAR SELATAN I Made sutrisna Ari Kesuma; Mawiti Infantri Yekti; Ida Bagus Purbawijaya
Jurnal Ilmiah Teknik Sipil Jurnal Ilmiah Teknik Sipil, Vol. 24, No. 2, Juli 2020
Publisher : Department of Civil Engineering, Udayana University

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Abstract

Flooding is a condition where excess capacity of water cannot be accommodated. It makes the water overflow to the right and left sides of the embankment of the drainage channel that causes adverse inundation. Flood phenomenon is absolutely inseparable from0the contribution0of the physical0condition0of an area from the0topography of an area where the land is gentler than0the0surrounding land. These problems occur in the drainage channel located on Jalan Bumi Ayu Denpasar. This study was aimed to deal with flooding by evaluating the capacity of the existing channel and increasing the channel on Jalan Bumi Ayu Denpasar. The analysis of drainage channel capacity in calculating rainwater discharge by observing flow patterns and channel dimension planning based on surveys that have been conducted. The annual maximum daily rainfall data was obtained from the Regional Office of the Meteorology and Geophysics Agency in Region III Denpasar. The rainfall stations reviewed were Sanglah Station and Sumerta Station. It starts with analyzing the annual maximum daily rainfall data so that the Intensity Duration Frequency (IDF) curve was obtained. Calculation of time concentration is calculated using the Kirpich formula, then the theoretical plan flood discharge was carried out by the Rational Method, namely Qt = 0.278.C.I.A and channel capacity was calculated by the formula Qsal = A.V. If the calculation results show Qsal> Qt, then the area is safe from inundation / flood problems. From the results of the analysis, the tertiary drainage could not accommodate theoretical discharge for the return period of 2 and 5 years, on the secondary channel it was unable to0accommodate0theoretical discharge0for the return0period of 5 and 10 years. So it is necessary to increase0the channel capacity0dimensions from SBA 1 to SP 4 (B: 0,75 - 1; H: 0,9 - 1,7) m.
EVALUASI SISTEM PENYEDIAAN AIR BERSIH MENGGUNAKAN SOFTWARE WATERCAD DI DESA BATUNGSEL KECAMATAN PUPUAN KABUPATEN TABANAN Mawiti Infantri Yekti; Kadek Diana Harmayani; I Nyoman Dharma Krisnahadi
JURNAL SPEKTRAN Vol 8 No 1 (2020): VOL. 8, NO. 1, JANUARI 2020
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

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Abstract

Batungsel Village utilizes clean water sourced from Sumber Tumpang Telu with existing water discharge from 2 (two) adjacent springs as much as 5,348 liters / second and 7,109 liters / second. At present, almost 20% of the community has not been served with clean water, and the existing distribution pipeline system has been able to meet 2 (two) existing banjars, namely the Batungsel Kelod and the Batungsel Kaja banjar. The results of the analysis of population growth projections show the arithmetic method which has the smallest standard deviation value. The average clean water needs for Batungsel village until 2033 are Banjar Batungsel Kelod at 1.75 liters / second, Banjar Batungsel Kaja at 2.71 liters / second, Banjar Dinas Pempatan at 0.01 liters / second and clean water needs at the development phase of the Dinas Pempatan banjar is 1.20 liters / second. The simulation results of the WaterCAD V8i program provide simulation results with pipes that do not meet the speed requirements, so that at the development stage a pipe diameter change is made according to the planning criteria and the development stage in the Pangkalan Service Office with the WaterCAD V8i program has met the planning standards. The development phase is planned to use PVC pipe class S-10 which is able to withstand a maximum pressure of 12.5 atm with fixed demand requirements or average water requirements of 0.11 liters / second.
ANALISIS PENGEMBANGAN SUMBER DAYA AIR DAS TUKAD SABA DENGAN DIBANGUNNYA WADUK TITAB DI KABUPATEN BULELENG Siti Nur Indah Sari; Mawiti Infantri Yekti; I Nyoman Norken
JURNAL SPEKTRAN Vol 8 No 1 (2020): VOL. 8, NO. 1, JANUARI 2020
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

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Abstract

The Saba river basin has an area of ??69.54 km2 and the length of the drainage is 36 km. The river drainage area is a hilly area, so that rainwater flows quickly which then becomes a flood. The land condition in the inundation area generally consists of rice fields that depend on rain, there is no technical irrigation system so that the cropping pattern depends on the rain. So to overcome this problem a Titab Reservoir was built. The Titab Reservoir serves as the supply of irrigation water for DI Saba with an area of ??1,396.40 ha and Pulp of 398.42 ha, raw water as much as 0.35 m3/s and PLTA with 2 x 0.75 MW. Given the importance of the benefits of the Titab Reservoir, a study of the reservoir capacity of the Titab Reservoir was conducted. The analysis begins with calculating the reliability discharge from measured discharge data, obtained Q80 of 2.01 m3/dt. Furthermore, calculating irrigation needs, while water and hydropower needs are used from existing planning data. Then do the simulation using the RIBASIM program. The simulation results show scenario 2 produces a reliability level of 83.33%, scenario 3 produces a reliability level of 82.22%, and scenario 4 produces a reliability level of 58.54%. Scenario 2 is the optimum result. Furthermore, verification of the RIBASIM model is needed using observational discharge data at the Saba dam. The verification results show that the data accuracy is quite good with a correlation coefficient of 0.74 and determination of 0.55.
A Bibliometric Analysis of Input Parameter in Artificial Neural Network Approach for Groundwater Level Prediction Putu Doddy Heka Ardana; I Wayan Redana; Mawiti Infantri Yekti; I Nengah Simpen
International Journal of Engineering and Emerging Technology Vol 5 No 2 (2020): July - December
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/IJEET.2020.v05.i02.p22

Abstract

Rapid growth in the Artificial Neural Network (ANN) approach in groundwater level prediction literature calls for an assessment of the trajectory and impacts to identify key themes and future research directions. In this paper, reported a bibliometric analysis of this literature that focuses on examining input paramater uses, focus of research, and research forward. We used Elsevier’s SCOPUS database, Dimensions, and Google Scholar to search for publications from January 2000 to May 2020 on the ANN approach in groundwater level prediction, and analyzed the ?nal sample of 101 publications using RIS file from Mendeley and Vosviewer software tools. Thematic analysis of abstracts revealed a strong focus on groundwater level prediction with artificial neural network approach. The co-occurrence network map showed the hydro-climatology parameter like precipitation, temperature, and groundwater level connected with a large number of frequently used for input in ANN approach, while the evapotranspiration, evaporation, humidity, river stage, runoff parameter demonstrated much weaker links. Re?ected on how these ?ndings may useful for better understand and ultimately be able to use the other hydro-climatology input paramater on groundwater level prediction with artificial neural network approach.
EVALUASI KINERJA SISTEM IRIGASI BERDASARKAN PERMEN PUPR NO.12/PRT/M/2015 (STUDI KASUS: DAERAH IRIGASI TUKAD AYUNG, MAMBAL, KABUPATEN BADUNG) Mawiti Infantri Yekti; Anak Agung Diah Parami Dewi; I Nyoman Suparyana
JURNAL SPEKTRAN Vol 8 No 2 (2020): VOL. 8 NO. 2, JULI 2020
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

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Abstract

ABSTRAK Evaluasi kinerja sistem irigasi sangat diperlukan untuk mengetahui nilai komponen seluruh pendukung sistem irigasi yang selanjutnya digunakan sebagai referensi perbaikan. Evaluasi kinerja sistem irigasi mengacu pada Permen PUPR No.12/PRT/M/2015 Tanggal 6 April 2015 tentang Eksploitasi dan Pemeliharaan Jaringan Irigasi yang dikombinasi dengan sistem jaringan irigasi subak. Terdapat permasalahan di Daerah Irigasi Tukad Ayung Mambal yang memiliki luas baku 5.963 ha dengan luas lahan produktif sekitar 2.608 ha yang berkisar 44% dari luas baku. Penelitian ini bertujuan untuk menganalisis kinerja sistem irigasi utama dan tersier dan mengetahui strategi penanganan dalam upaya meningkatan kinerja sistem irigasnya. Untuk menganalisis permasalahan tersebut, dalam penelitian ini menggunakan metode deskriptif kualitatif, dengan mengumpulkan data primer menggunakan formulir wawancara terstruktur berdasarkan penilaian kinerja sistem irigasi. Formulir ini telah dilampirkan dalam peraturan tersebut. Pemilihan sampel menggunakan metode purposive sampling untuk mengevaluasi kinerja sistem irigasi, pada sistem irigasi utama 45 responden, dan 43 responden pada sistem irigasi tersier. Wawancara juga dilakukan kepada pejabat terkait pada Dinas PUPR Provinsi Bali. Hasil analisis kinerja sistem irigasi memiliki nilai 78% untuk sistem irigasi utama, dan 71% untuk sistem irigasi tersier. Hasil ini sesuai dengan standar Permen tersebut yang memiliki kisaran nilai 70-79 dengan kategori kinerja baik. Hal ini sudah sesuai dengan hasil wawancara bahwa telah dilakukan pemeliharaan rutin dan pemeliharaan secara berkala pada DI Tukad Ayung Mambal.
Pemodelan Sumur Resapan Sebagai Upaya Penurunan Risiko Banjir Kota Denpasar pada DAS Badung Tri Hayatining Pamungkas; Mawiti Infantri Yekti; Kadek Diana Harmayani; Siti Nurul Khotimah; Made Kariyana
Jurnal Aplikasi Teknik Sipil Vol 20, No 3 (2022)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2579-891X.v20i3.11785

Abstract

Badan Penanggulangan Bencana Daerah Provinsi Bali pada tahun 2013 menyatakan bahwa beberapa wilayah Denpasar terendam banjir karena tingginya curah hujan pada daerah pemukiman sehingga terjadi genangan di beberapa area. Dampak kejadian banjir dapat dikurangi dengan membangun sumur resapan. Sumur resapan mampu menurunkan debit dan limpasan hujan dengan cara meningkatkan kapasitas infiltrasi di daerah aliran sungai. Perencanaan sumur resapan dianalisis dengan menerapkan remote sensing pada DAS Badung yang terdapat di wilayah Denpasar. Selanjutnya dilakukan perhitungan banjir dengan software HEC-HMS dan perencanaan sumur resapan berdasarkan SNI 03-2453-2002. Hasil analisis sumur resapan pada sub DAS Badung dapat menurunkan debit banjir kala ulang 50 tahun sampai 50,70% dan volume limpasan banjir 74,09%. sehingga penerapan pemanenan air hujan dengan sumur resapan dapat dijadikan salah satu referensi sebagai bentuk penerapan konservasi sumber daya air dalam upaya penurunan risiko bencana banjir di Kota Denpasar.