Ernawan Setyono
Universitas Muhammadiyah Malang

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Analisis Peningkatan Kapasitas Kantong Lahar Kali Regoyo Desa Regoyo Kabupaten Lumajang Saleh, Chairil; Setyono, Ernawan; Hidayat, Faris Rakhmat
Jurnal Teknik Pengairan Vol 1, No 2 (2010)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Kali Regoyo menerima material dari letusan Gunung Semeru dengan volume ± 6 juta m3 atau hampir 10 %dari total perkiraan material yang menjadi lahar sekunder. Salah satu usaha yang dilakukan dalam rangka pengendalian aliran sedimen dan mengurangi suplai sedimen tersebut adalah dengan menahan dan menampung sehingga aliran lahar atau sedimen dalam relatif lama yang dapat mengakibatkan pendangkalan pada daerah tengah dan hilir. Untuk menghindari bencana yang diakibatkan oleh bahaya aliran lahar Gunung Semeru tersebut, dibuat bangunan pengendali sedimen yang antara lain Kantong Pasir. Untuk mereduksi debit puncak sedimen karena volume kontrol dapat direncanakan dengan menentukan dimensi dan jumlah celah. Dengan kata lain dimensi dan jumlah celah berpengaruh terhadap besar volume kontrol sedimen. Makin kecil dimensi celah dan makin sedikit jumlah celah, makin besar volume kontrol sedimen. Setelah debit puncak perencanaan (Q) sebesar 357,397 m3/det didapat dari perhitungan, maka dapat direncanakan dimensi drempel kantong lahar. Dari hasil perhitungan diperoleh bahwa tinggi main dam 6,5 m, lebar mercu main dam 4 m, kemiringan bagian hulu 1:0,9 dan kemiringan hilir 1:0,2, lebar dasar peluap 100 m, elevasi muka air 1,524 m dan tinggi jagaan 1,2. Tinggi sub dam 3,34 m, lebar mercu sub dam 3 m, kemiringan bagian hulu 1:0,9 dan kemiringan bagian hilir 1:0,2. Jarak main dam dan sub dam adalah 25 m dengan tebal lantai (Apron) 1,5 m, volume sedimen statis = 910.560,345 m3, volume sediment dinamis = 1.204.847,909 m3, volume sedimen yang harus diatur = 294.287,564 m3. Melihat begitu kompleksnya permasalahan sedimen dan perilakunya, maka penanggulangan terhadap kemungkinan terjadinya banjir lahar di daerah kali regoyo harus memperhatikan kondisi dan perilaku sedimen yang ada.Kata Kunci : Lahar, Sedimen, dan Drempel Kantong Lahar.
STUDI EVALUASI DAN PERENCANAAN SISTEM JARINGAN DRAINASE KECAMATAN ROGOJAMPI KABUPATEN BANYUWANGI Khadafi, Muamar; Setyono, Ernawan
Jurnal Media Teknik Sipil Vol 12, No 1 (2014): Februari
Publisher : Jurnal Media Teknik Sipil

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STUDI EVALUASI DAN PERENCANAAN SISTEM JARINGANDRAINASE KECAMATAN ROGOJAMPI KABUPATENBANYUWANGIMuamar Khadafi1, Ernawan Setyono21&2Jurusan Teknik Sipil Fakultas Teknik – Universitas Muhammadiyah MalangAlamat korespondensi : Jalan Raya Tlogomas 246 Malang 65144ABSTRACTParts of the eastern part of the island of Java there is a district in the district called banyuwangi.The condition of the existing drainage system in the sub-district Rogojampi banyuwangi can say isinadequate to accommodate the construction of both the discharge flow from the waste comesfrom household or storm water discharge exists as hydrological impacts that occur in the regiontersabut. As a result, many districts Rogojampi often encounter serious problems due to standingwater is often the case in several sections of the area especially during the rainy season arrives. Soit is important to evaluate the channel capacity and planning of the new drainage system.Based on the evaluation results can be known that there are several sections of the channelwere not able to hold back the flood discharge stage biennial (two-year Q), so that the necessary replanningthe channel cross section. It provides a new drainage plan is also required to reduce thepool of water when it rains. It also required some supporting buildings culvert drainage system tominimize area genagnanKey Word ; Drainage, Discharge, Normalisation, Planing, Evaluasition
Pemakaian Model Diterministik Untuk Transformasi Data Hujan Menjadi Data Debit Pada Das Lahor Setyono, Ernawan
Jurnal Media Teknik Sipil Vol 9, No 1 (2011): Februari
Publisher : Jurnal Media Teknik Sipil

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Hydrologic analysis is an important stage in water resources development activities, therefore the output of the general hydrological analysis will determine the direction of water resources development strategy in a comprehensive and more narrow scale will determine the dimensions and characteristics of the necessary infrastructure. Determination of hydrological quantities are actually not too difficult when the data for analysis is available in sufficient quantity and quality. Classical problems in developing countries, including Indonesia, the availability of river flow data series is quite a separate issue, so the solution must be done by to specification climate variables into a variable flow. So far this has been developed conceptual model, of course, each has advantages and disadvantages because basically models were developed according to local hydrological conditions. All models are basically developed from the same basic concept, namely the hydrological cycle. Basic things that sets it apart is the way to interpret the process until the rain began to flow. This is what would need to be studied further in this study.This study is an attempt to determine the performance model determinstic of FJ Mock, NRECA, and Tank model and can explain the comparative level of performance of the deterministic model in Reservoir Lahor.Results of research on Lahor Reservoir indicated that the tank model is able to present the relationship of climate data and data streams very well. In this research obtained on the model RMSE value of model NRECA is 7.854 m3/sec, model FJ Mock for 18.696 m3/sec and Tank Model for 7.823 m3/sec.Keywords: discharge, NRECA model, fjmock model, model tank
KAJIAN DISTRIBUSI SEDIMENTASI WADUK WONOREJO, TULUNGAGUNG-JAWA TIMUR Setyono, Ernawan
Jurnal Media Teknik Sipil Vol 9, No 2 (2011): Agustus
Publisher : Jurnal Media Teknik Sipil

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This study aims to know the distribution of sedimentation of the most suitable method amongthe Emperical Area Reduction Method and Area Increment Method for predicting the the distributionof sediments in the Reservoir Wonorejo. While the purpose of this study was to determine the baseelevation of a new reservoir (new zero elavation) after the existing sediments. With both methodscan be known distribution of sediments in the reservoir for the operating life of 8 years and 11years. After analysis, it can be concluded that Emperical Area Reduction Method is more suitable topredict the distribution of sedimentation in reservoirs Wonorejo. For operasi period of 8 years,sediment has reached an elevation of +122,21 m which is at 2.21 m above the base elevationreservoirs, the amount of sediment that settles in the reservoir is 2,0608. and for the operationof 11 years, sediments deposited reaches two, 2,2371. at an elevation of +123,47 m or 1,47m above the base elevation of the reservoir.Key word : Distribution of Sedimentation
Prediksi Beban Sedimentasi Waduk Selorejo Menggunakan Debit Ekstrapolasi dengan Rantai Markov Setyono, Ernawan; Ismijayanti, Devi
Jurnal Media Teknik Sipil Vol 13, No 1 (2015): Februari
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Muhammmadiyah Malang

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Prediksi Beban Sedimentasi Waduk Selorejo Menggunakan Debit Ekstrapolasi dengan Rantai MarkovPrediction of Reservoir Sedimentation Selorejo Loads Using Debit Extrapolation Markov ChainErnawan Setyono1 & Devi Ismijayanti21,2Jurusan Teknik Sipil – Fakultas Teknik Univ. Muhammadiyah MalangAlamat Korespondensi : Jl. Raya Tlogomas 246 Malang 65144Email : 2)dhevieismijayanti.1992@gmail.comAbstractSelorejo reservoirs in operation since 1970 and is expected to operate and serve the needs of water up to the year 2020. The main problem encountered in the construction and operation of reservoirs is how to keep the service life of the reservoir as planned, one of which causes the sediment that settles at the bottom of the reservoir , Based on the results of recent measurements, it is known that the dead storage capacity of 1.71 million m3. Each year has an additional volume of sediment that settles that require greater storage capacity. The results showed that in 2014 increased storage capacity for additional volume of sediment that settles at 3,223,797.64 m3 and storage capacity increased to 4,933,797.64 m3. 2015 dead storage capacity increased to 7,920,967.58 m3 and continued to increase until 2020 dead storage capacity reaches 25,585,055.30 m3. This situation shows that the volume of sediment elevation has crossed the level of low-water line (LWL) and already exceeds the volume of the sediment storage capacity die before the age of reservoirs that have been planned so that it takes some effort to reduce the rate of sedimentation in the reservoir.Keywords: reservoirs, dead storage capacity, sedimentAbstrakWaduk Selorejo beroperasi sejak tahun 1970 dan diharapkan dapat beroperasi dan melayani kebutuhan air hingga pada tahun 2020. Masalah utama yang dihadapi dalam pembangunan dan pengoperasian waduk adalah bagaimana menjaga agar umur layanan waduk sesuai dengan yang direncanakan, salah satunya penyebabnya adanya sedimen yang mengendap di dasar waduk. Berdasarkan hasil pengukuran terakhir, diketahui bahwa kapasitas tampungan mati 1,71 juta m3. Setiap tahun memiliki tambahan volume sedimen yang mengendap sehingga memerlukan kapasitas tampungan yang lebih besar. Hasil penelitian menunjukkan bahwa pada tahun 2014 kapasitas tampungan meningkat karena penambahan volume sedimen yang mengendap di 3,223,797.64 m3 dan kapasitas tampungan meningkat menjadi 4,933,797.64 m3. Tahun 2015 kapasitas tampungan mati meningkat menjadi 7,920,967.58 m3 dan terus meningkat hingga 2020 kapasitas tampungan mati mencapai 25,585,055.30 m3. Situasi ini menunjukkan bahwa volume elevasi sedimen telah menyeberangi tingkat garis air rendah (LWL) dan sudah melebihi volume kapasitas tampungan sedimen mati sebelum usia waduk yang telah direncanakan sehingga dibutuhkan beberapa upaya untuk mengurangi tingkat sedimentasi ke dalam reservoir.Kata kunci: waduk, kapasitas tampungan mati, sedimen
ANALISIS PERENCANAAN PONDASI DINAMIS UNTUK MENDUKUNG MESIN TURBIN PADA PABRIK GULA CUKIR JOMBANG Setyono, Ernawan; Amudi, Abdiyah
Jurnal Media Teknik Sipil Vol 13, No 2 (2015): Agustus
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Muhammmadiyah Malang

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ANALISIS PERENCANAAN PONDASI DINAMIS UNTUK MENDUKUNG MESIN TURBIN PADA PABRIK GULA CUKIR JOMBANGDynamic Foundation Design Analysis To Support The Turbine Engine At The Sugar Factory of Cukir JombangErnawan Setyono1 & Abdiyah Amudi21&2Jurusan Teknik Sipil Universitas Muhammadiyah Malang Alamat korespondensi : Jl. Raya Tlogomas 246 Malang 65144AbstractFoundation plan to shore up machine load, the foundation system influinced by shaking load, the load caused by imbalance machine force and static system load (foundation and machine). Reminding the change shaking load, according to time and tempo function which long and working in repetition, it caused the structure would be difference compared with structure which accepted static load only. Foundation type used in this planning was block type foundation where in its calculation to find out the condition fulfilled dimention, using trial and error. In general, the foundation weight was the multiple times of machine weight. Direction amplitudo z = 0,127 mm, amplitudo direction x = 0,142 mm, amplitudo direction y = 0,19 mm, amplitudo vertical combination = 0,0083 rad, amplitudo horizontal combination = 0,0027 rad and turque amplitudo = 0,00159 rad. Dimention which able to resist the machine dynamic load by length 9,2 m, wide 4,8 m, and deep 2,8 m.Keywords : Dynamic Foundation, Elastic Half Space MethodAbstrakPerencanaan pondasi apabila harus menopang beban berupa mesin, maka sistem pondasi tersebut dipengaruhi oleh beban yang bergetar, beban ini disebabkan oleh gaya-gaya mesin yang tidak seimbang dan beban statis sistem (pondasi dan mesin). Mengingat bekerjanya beban yang bergetar tersebut berubah berdasarkan fungsi waktu dan tempo yang relatif lama dan bekerja secara berulang-ulang, maka hal ini menyebabkan kelakuan struktur akan berbeda apabila dibandingkan dengan struktur yang menerima beban statis saja. Tipe pondasi yang dipakai dalam perencanaan ini adalah tipe pondasi blok, dimana dalam perhitungannya untuk mendapatkan dimensi yang memenuhi syarat menggunakan cara coba-coba. Secara umum berat pondasi adalah sekian kali dari berat mesin. Amplitudo arah z = 0,127 mm, amplitudo arah x = 0,142 mm, amplitudo arah y = 0,19 mm, amplitudo kombinasi vertikal = 0,0083 rad, amplitudo kombinasi horizontal = 0,0027 rad dan amplitudo torsi = 0,00159 rad, Dimensi yang mampu menahan beban dinamis mesin yaitu dengan panjang 9,2 m, lebar 4,8 m dan kedalaman 2,8 m.Kata kunci : Pondasi Dinamis, Metode Elastic Half Space
ANALISA TINGKAT BAHAYA EROSI PADA SUB DAS LESTI KABUPATEN MALANG MENGGUNAKAN SISTEM INFORMASI GEOGRAFIS Setyono, Ernawan; Prasetyo, Bangkit
Jurnal Media Teknik Sipil Vol 10, No 2 (2012): Agustus
Publisher : Jurnal Media Teknik Sipil

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Ernawan Setyono1& Bangkit Prasetyo21&2Fakultas Teknik Jurusan Teknik Sipil Universitas Muhammadiyah MalangAlamat Korespondensi : Jl. Raya Tlogomas, No.246 Malangemail :ernawan@umm.ac.id , Telp 03419591639ABSTRACTSub DAS Lesti is a part of Brantas watershed that located at upstream section and a sub DASpriority. That has 61.491,02 ha of water catchment areas. Hydrological processes that occur in awatershed is closely related to erosion. The alteration of land use and watershed management is oneof the factors causing soil damage, accelerate the erosion rate, and cause erosion. Based on thecondition of that case, this study analyzes about how much the erosion rate, the amount of erosion,and to estimate the level of erosion that will occur.MUSLE method is one of the methods used to determine the magnitude of the erosion rate,that use an approach of runoff factor. Geographic Information Systems (GIS) used for the managementand data processing. Geographic Information Systems is a spatially information technology thatgenerate digital data which can gives the area characteristics, and illustrates the potential of soildamage.The level of erosion hazard on Sub DAS Lesti for weight categories reach 31.421% of thearea, while another erosion rate is Medium 24.146%, Lightweight 22.151%, Very Heavy 16.123%,and Very Light 6.159%.
Studi Optimasi Pola Tanam Daerah Irigasi Gong Gang Kecamatan Parang Kabupaten Magetan Setyono, Ernawan; Mucharom, safik
Media Teknik Sipil Vol 14, No 1 (2016): Februari
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Muhammadiyah Malang

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Along with the increasing population growth, the need for food also increased. To meet that need for optimization studies of the factors that influence spatial patterns of planting in order to increase the volume of food production. Determination of the cropping pattern that will be used after the first known dependable flow and water requirements. Through the design cropping pattern is expected cropping intensity can be enhanced and existing water sources can be used optimally. linear programming used in this optimization study using QM for Windows 4 software. The most optimal results from the optimization that has been done is an alternative was began on November  cropping patterns : rice-palawija-sugarcane season crops beginning 1st week of November, profits amounted to Rp 106.729.700.000 to the area that can be cultivated for the planting season I: Rice = 1990 ha, palawija = 307 ha sugarcane = 89 ha, planting season II: Rice = 1990 ha, palawija = 307 ha sugarcane = 89 ha, and planting season III:  Rice = 258,2753 ha Palawija = 2038,725 ha, sugarcane = 89 ha
PERAMALAN (FORECASTING) SEDIMENTASI WADUK LAHOR MENGGUNAKAN ANALISA REGRESI DAN DEBIT BANGKITAN MODEL STOKASTIK Setyono, Ernawan
Media Teknik Sipil Vol 15, No 2 (2017): Agustus
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (71.575 KB) | DOI: 10.22219/jmts.v15i2.4854

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Waduk Lahor terletak pada desa Karangkates, Kecamatan Sumberpucung, Kabupaten Malang, Provinsi Jawa Timur. Waduk Lahor mulai beroperasi sejak tahun 1977 dengan usia rencana selama 50 tahun sehingga diharapkan dapat beroperasi hingga tahun 2027, masalah utama yang dihadapi dalam pengelolaan waduk adalah bagaimana menjaga agar umur layanan waduk dapat sesuai dengan yang direncanakan dikarenakan adanya sedimen yang mengendap pada dasar waduk dan seiring waktu akan semakin mengurangi tampungan efektif waduk., dan pada tahun 2015 tampungan mati Waduk Lahor menyisakan kapasitas 2.517.357,31 m3. Dari hasil studi didapatkan adanya keterkaitan antara debit sedimen (Qs) dengan debit inflow waduk (Qw) menggunakan model Regresi Berpangkat dengan fungsi Qs = 1,623.Qs0,72, pada pengujian  model didapatkan bahwa model stokastik Thomas-Fiering lebih representatif untuk pembangkitan data sintetik daripada model Rantai Markov dikarenakan memiliki simpangan lebih kecik dengan nilai RMSE 4,19 m3/detik dan nilai MAE 2,92 m3/detik. Dari hasil bangkitan data sintetik sepanjang usia rencana dan persamaan regresi berpangkat didapatkan volume sedimen tahun 2015 – 2027 dengan nilai trap efisiensi 88% sejumlah 1.822.200,05 m3, sehingga pada tahun 2027 diprediksi tampungan mati hanya menyisakan kapasitas 695.159,26 m3 dan dapat disimpulkan bahwa Waduk Lahor dapat beroperasi hingga usia rencana
KAJIAN DISTRIBUSI SEDIMENTASI WADUK BENING KABUPATEN MADIUN (EMPERICAL AREA REDUCTION METHOD DAN AREA INCREMENT METHOD) Setyono, Ernawan
Media Teknik Sipil Vol 15, No 1 (2017): Februari
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Muhammadiyah Malang

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Waduk Bening merupakan salah satu waduk yang berada di Propinsi Jawa Timur yang memiliki luas daerah genangan sebesar 5,7 km2 dengan kapasitas tampungan air sebesar 31,7 juta m3. Dalam pengelolaan suatu waduk, pasti terdapat suatu masalah di antaranya yaitu masalah sedimentasi. Ada beberapa metode yang bisa digunakan untuk mengetahui distribusi sedimen diantaranya adalah metode Empirical Area Reduction, Area Incrament dan Moody’s Modification. Pada studi kali ini metode yang digunakan adalah metode  Empirical Area Reduction dan Area Incrament. Dengan bertujuan untuk mengetahui metode yang paling sesuai diantara Emperical Area Reduction Method dan Area Increment Method untuk memprediksi distribusi sedimen di Waduk Bening Madiun Jawa Timur. Dari hasil analisa didapat metode yang efisien yaitu metode Empirical Area Reduction sehingga didapat volume sedimen yang mengendap untuk  19 tahun sebesar 0,070 juta m3 dan untuk 22 tahun sebesar 0,068 juta m3.