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PEMODELAN DEBIT SUNGAI KAHAYAN MENGGUNAKAN JARINGAN SYARAF TIRUAN BERDASARKAN DATA HUJAN DAN EVAPOTRANSPIRASI Dermawan, Very; Soetopo, Widandi; Alpikarigo, Jano
Jurnal Teknik Pengairan Vol 11, No 1 (2020)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Abstract

Discharge is one of the bases in a plan for a water resource management activity. Determination of the discharge value can be done through measurements directly in the field or through analysis. With the analysis of rainfall on river discharge can be an alternative in water structure planning, with the right methods the results of the discharge analysis will approach with real hydrological condition. In this study, the analysis was carried out using the Artificial Neural Network method to find out the results of the modeling of river discharge based on rainfall and evapotranspiration data and to know the comparison between model discharge and real discharge. To discover the compatible between modeling discharge with real discharge, calibration and learning of Networks has been done with 6 until 9 years learning data, and verification of the model discharge by 4 until 1 years from the rest of the calibration data. In network learning, epoch 500 until 2000 are used. The error test are Mean Square Error (MSE), Mean Absolute Error (MAE), Relative Error (Kr), Correlation Coefficient (R), Nash-Sutcliffe Efficiency (NSE). The results of comparison between model discharge using the Artificial Neural Network with real discharge, based on the test results discover that in the distribution of 7 year learning data and 3 year test data with epoch 1000 that compatible with criteria and had the best value, based on result of Nash-Sutcliffe Efficiency (NSE) value, and the Correlation Coefficient (R)
Studi Perencanaan Sistem Jaringan Pipa Distribusi Air Bersih dengan Software WaterCAD di Perumahan Green Orchid Residence Kota Malang Rusardi, Olda Fadhilah Aprilia; Prayogo, Tri Budi; Dermawan, Very
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 1, No 2 (2018)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Abstract

Green Orchid Residence planned 968 houses with considering the futureidevelopment. This studyiaimed to determineithe existing conditions and development conditions at the study site based on the existing hydrauliciconditions. Simulation of water distributioniinetwork are usingiWaterCAD V8iisoftware application. Totalidischarge on the distribution pipe is 527,5 l/s and the available discharge is 72,5 l/s. According to the calculation of total dischargeirequired at the planning and development phase, the average dischargeirequired is 27,1 l/s. The calculation is based on the water needs fluctuation with the discharge changing according to the load factor of each hours. There are two alternative plans, first is according to existing conditions (all pumps are on) and second with changing of working hours of the pump and addition a new pump with centrifugal type. Also there are two alternative for future development, alternative 3 with addition 532 houses and alternative 4 with addition 500 houses. The simulation result showing the hydraulic condition, which 0,1 – 2,5 m/s of velocity, 0,5 – 15,0 m/km of headloss gradient and 0,5 – 8,0 atm of pressure. The cost estimation for the first alternative is Rp 688.494.800,00, the second alternative is Rp 729.885.600,00, the third alternative is Rp 823.588.200,00 and the fourth alternative is Rp 974.403.900,00. Keywords: WaterCAD, water, pipe network, planning, cost estimation
STUDI PENANGANAN TEKNIS BANJIR DI DAS KALI LAMONG, KABUPATEN GRESIK – JAWA TIMUR Indrajayatama, Ridho Satria; Sholichin, Moh.; Dermawan, Very
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 3, No 2 (2020)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Abstract

Kali Lamong merupakan salah satu sungai yang berada di Kabupaten Gresik, Propinsi Jawa Timur. Kali Lamong memiliki luas DAS sebesar kurang lebih 720 km2 dan panjang sungai sepanjang 103 km dengan 6 anak sungai utama. Perubahan tata guna lahan yang terjadi membuat tiap tahunnya terjadi banjir di Kabupaten Gresik akibat luapan Kali Lamong. Dibutuhkan upaya penanganan teknis guna menanggulangi banjir. Terdapat dua usulan teknis yang dianalisa yaitu perencanaan tanggul urugan dengan concrete sheetpile (CCSP) dan kolam retensi. Pada studi ini, dilakukan analisa hidrologi guna mendapatkan debit banjir rancangan pada lokasi studi. Selanjutnya akan dilakukan analisa hidrolika dengan program HEC-RAS 5.0.7. dengan debit banjir rencana Q25 tahun sebagai dasar perencanaan usulan teknis. Usulan pertama adalah perencanaan tanggul dengan tinggi 4,5 meter dan direkomendasikan menggunakan produk PT. Wika Beton (Persero) Tbk dengan tipe W-325. Tanggul ini memiliki efektifitas mereduksi banjir sebesar 100%. Sedangkan usulan teknis kedua adalah dengan 1 unit kolam retensi pada hulu Kali Lamong dengan tampungan total 409692 m3. Perencanaan inlet kolam retensi menggunakan pelimpah samping dan outletnya berupa pintu pengeluaran yang memiliki waktu pengurasan kolam selama 3 jam 6 menit. Kolam retensi memiliki efektifitas mereduksi banjir sebesar 11,4%. Berdasarkan efektifitas mereduksi banjir dari dua usulan teknis tersebut, penanganan teknis dengan tanggul yang dipilih guna menangani banjir di Kali Lamong. Kali Lamong is a river located in Gresik Regency, East Java Province. Kali Lamong has a watershed area of ​​approximately 720 km2 and a river length of 103 km with 6 main tributaries. Changes in land use that occur each year cause flooding in the Gresik Regency due to the overflow of Kali Lamong. It takes technical handling efforts to tackle flooding. There are two technical proposals analyzed, namely the embankment design with concrete sheet pile (CCSP) and retention ponds. In this study, a hydrological analysis was carried out to obtain the design flood discharge at the study location. Next, a hydraulic analysis will be carried out using the HEC-RAS 5.0.7 program. with the Q25 year plan flood discharge as the basis for planning technical proposals. The first proposal is to plan a dyke with a height of 4.5 meters and it is recommended to use PT. Wika Beton (Persero) Tbk with type W-325. This embankment has a flood reduction effectiveness of 100%. Meanwhile, the second technical proposal is a retention pond in the upper reaches of the Lamong River with a total storage capacity of 409692 m3. The retention pond inlet planning uses a side spillway and its outlet is a discharge gate that has a pool drainage time of 3 hours 6 minutes. The retention pond has the effect of reducing flooding by 11.4%. Based on the effectiveness of reducing floods from the two technical proposals, the technical handling with the embankment was chosen to handle flooding in Kali Lamong.
Application of Artificial Neural Network For Defining The Water Quality in The River Haribowo, Riyanto; Dermawan, Very; Yudha, Nevandria Satrya
Civil and Environmental Science Journal (CIVENSE) Vol 1, No 1 (2018)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2018.00101.2

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Predicting point and nonpoint source runoff of dissolved and suspended materials into their receiving streams is important to protecting water quality. Therefore, it is important to monitoring the condition of river water quality. The purpose of this study is to predict water quality in small streams using an Artificial Neural Network (ANN). The study focuses on small stream in tributary of Brantas River. The variables of interest are dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD), pH and temperature (T). To validate the performance of the trained ANN, it was applied to an unseen data set from a station in the region. The result show that the prediction of DO is 6.03 mg/litre, pH is 6,47 mg/litre and temperature is 25.18°. With the relatively error was 15.63%, 12.64% and 14.12% respectively. It was finally concluded that ANN models are capable of simulating the water quality parameters.
KAJIAN HIDROLIKA BANGUNAN PELIMPAH SAMPING (SIDE CHANNEL SPILLWAY) BENDUNGAN TIU SUNTUK KABUPATEN SUMBAWA BARAT DENGAN UJI MODEL FISIK 1:60 DRIANTAMA, AL GHIFARY; Dermawan, Very
Jurnal Mahasiswa Jurusan Teknik Pengairan Vol 4, No 1 (2020)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Abstract

ABSTRAK: Mengingat fungsi dari Bendungan Tiu Suntuk adalah untuk mengendalikan banjir yang sering terjadi akibat meluapnya Sungai Brang Rea dan Brang Ene, maka perlu dilaksanakan uji model fisik untuk memperoleh kesempurnaan desain. Tujuan penelitian ini untuk mengetahui dan memahami fenomena hidrolika aliran pada Bangunan Pelimpah Samping Bendungan Tiu Suntuk dengan skala uji model fisik 1:60. Analisa hidrolika aliran pada bangunan pelimpah menggunakan persamaan kontinuitas dengan pendekatan metode Iwasaki, kemudian saluran transisi dan saluran peluncur menggunakan metode tahapan standar, dan yang terakhir saluran samping serta peredam energi menggunakan hukum persamaan momentum. Untuk mengetahui bahaya aliran getar serta kavitasi masing-masing dianalisis menggunakan bilangan Vendernikov – Montuori dan indeks kavitasi sebagai parameter tak berdimensi. Hasil pengujian original desain menunjukkan terjadinya aliran silang pada kaki pelimpah dikarenakan bentuk ujung pilar yang tumpul sehingga dilakukan perbaikan dengan mengganti sudutnya menjadi lebih tajam dan menurunkan elevasi dasar saluran samping sebesar 2,0 m dari elevasi +85,50 m menjadi +83,50 m demi tercapainya bilangan Fr < 0,4. Kemudian, loncatan hidrolik yang terjadi di luar ruang kolam olak pada debit banjir Q25th–Q1000th, mengakibatkan aliran turbulen dan tergerusnya dasar saluran, hal ini perlu diperbaiki dengan menurunkan elevasi dasar kolam olak sebesar 2 m dari +40,0 m ke +37,0 m. ABSTRACT: Considering the function of Tiu Suntuk Dam as flood control that often occurs due to the overflowing of the Brang Rea and Brang Ene Rivers, it is necessary to carry out a physical model test to obtain optimal design. This study objective is to discover and conceive the phenomenon of hydraulic flow of Side Channel Spillway of Tiu Suntuk Dam with a 1:60 scale of physical model test. The hydraulic flow analysis on side spillway uses the approach of continuity equation of Iwasaki method, then the hydraulic flow on transition and chute channel use the standard step method, last but not least on side channel and stilling basin use momentum conservation law. To determine the risk of vibration flow and cavitation, each section along spillway channel was analyzed using the Vendernikov - Montuori number and dimensionless parameter of cavitation index.The original design test shown that the occurrence of cross flow on the spillway base due to the planning of the blunt shape of the pillar tip so the refinements were made such as substituting to a sharper angle and lowering the elevation base of the side channel by 2.0 m from an elevation of +85.50 m to +83.50 m in order to achieve the Fr <0.4. Then, the hydraulic jumps that still occur outside the stilling basin at the 25 to 1000 years of return period flood discharge resulting in turbulent flow and erosion of the channel bottom, by lowering the elevation base of stilling basin by 2 m from +40,0 m to +37,0 m is the solution.
ANALISA PENYEBARAN STASIUN HUJAN TERHADAP DEBIT BANJIR RANCANGAN PADA DAS KEDUNGLARANGAN (Kabupaten Pasuruan Jawa Timur) Eri Prawati; Very Dermawan
Prosiding Semnastek PROSIDING SEMNASTEK 2018
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Analisa hidrologi merupakan satu bagian analisis awal dalam perancangan bangunan hidrolik. Analisis hidrologi membutuhkan data yang terdiri dari data curah hujan, data debit dan data iklim. Hal ini membutuhkan beberapa jumlah stasiun hujan dan penempatan lokasi stasiun yang tepat. Untuk menetapkan jumlah hujan yang jatuh di dalam suatu DAS, dibutuhkan sejumlah stasiun hujan yang ada pada DAS yang bersangkutan, Ketelitian pengukuran data hujan dipengaruhi oleh jumlah stasiun hujan dan pola penyebaran di dalam DAS. Penempatan stasiun hujan yang tepat, jumlah stasiun hujan, pola penyebaran akan dapat diperoleh data yang akurat mengenai kedalaman, penyebaran dan intensitas hujannya. Kondisi persebaran stasiun hujan di DAS Kedunglarangan tergolong relative banyak, dimana saat ini terdapat 16 stasiun hujan pada wilayah DAS seluas 267,3 km2. Menurut standar WMO cukup diwakili oleh 2 stasiun hujan, sedangkan Bleasdale menyarankan 4 stasiun. Varshney menetapkan 8 stasiun sebagai angka yang ideal, kemudian Sugawara menyarankan 10 atau 15 stasiun hujan.
RASIONALISASI JARINGAN STASIUN HUJAN MENGGUNAKAN METODE KAGAN RODDA DENGAN MEMPERHITUNGKAN FAKTOR TOPOGRAFI PADA DAS SAROKAH KABUPATEN SUMENEP (Pulau Madura, Jawa Timur) Eri Prawati; Very Dermawan
TAPAK [Teknologi Aplikasi Konstruksi] : Jurnal Program Studi Teknik Sipil Vol 8, No 1 (2018): November 2018
Publisher : Prodi Teknik Sipil Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/tp.v8i1.802

Abstract

Data hasil pengukuran hujan didapatkan dari stasiun hujan yang tersebar di beberapa titikpada suatu Daerah Aliran Sungai (DAS). Untuk menetapkan jumlah hujan yang jatuh didalam suatu Daerah Aliran Sungai (DAS), dibutuhkan sejumlah stasiun hujan yang dipasang sedemikian rupa sehingga diperoleh data yang mewakili besaran hujan yang adapada DAS yang bersangkutan. Kesalahan dalam pengukuran seringkali terjadi dan ini yangmenyebabkan data tidak akurat. Jumlah penyebaran dan kondisi stasiun hujan merupakanfaktor yang sangat mempengaruhi kesalahan dalam pengukuran pada stasiun hujan.Ketelitian pengukuran data hujan dipengaruhi oleh jumlah stasiun hujan dan polapenyebaran di dalam DAS.Berdasarkan analisaoWMO dan Kagan – Rodda yang telah dilakukan, diperoleh analisaWMO merekomendasikan jumlahostasiun hujan yang ada di DAS Sarokah adalah 4stasiun hujan. Sedangkan Kagan – Rodda merekomendasikan 7 stasiun hujanodengankualitas data yang baik. Melihatobentuk DAS Sarokah yang memiliki bentuk yangmemanjang, maka dipilih stasiun hujan hasil rekomendasi analisaoKagan – Rodda dengan7 stasiun hujan agar tiap-tiap stasiun hujan dapat mewakili setiap luasan di DAS Sarokah.Kata kunci: rasionalisasi, stasiun hujan, topografi
Study of Drainage Channel Planning with Building Information Modeling (BIM) Implementation in UB Forest Buntoro Taufiqurrohman, Muhammad; Dermawan, Very; Nur Cahya, Evi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 15 No. 1 (2024)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2024.015.01.2

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The UB Forest Buntoro area is a biodiversity conservation zone that has the potential to be developed into a tourist forest, so it is planned to build a drainage channel in each section of the road to overcome the runoff that occurs. This research aims to describe an example of the application of BIM in construction planning for drainage channels. In this study, drainage channel planning was done using AutoCAD Civil 3D and Storm and Sanitary Analysis (SSA) software. The AutoCAD Civil 3D application is used to create a road route for which drainage channels are planned, and the SSA is used to analyze the hydrology and hydraulics of the drainage channel. Based on Building Information Modeling findings, the optimal drainage channel design yielded channel dimensions of 0.4 m × 0.4 m. The main channels (RC (Right Channel) and LC (Left Channel)) are planned to use gabion material, while the culverts are planned to use u-ditch material and a construction planning cost of 1.571.818.500,00 IDR. This study intends to give an example of how Building Information Modeling (BIM) is applied in Indonesia, particularly in the area of water resources. It does this by utilizing AutoCAD Civil 3D and SSA programs to design drainage channels. 
Study Planning of Check Dam as Sediment Controller at Sumbersari UB Forest Area Oktaviariyadi, Nabila; Dermawan, Very; Saputra , Anggara Wiyono Wit
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 2 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.02.10

Abstract

The construction of a check dam is proposed as a solution to address multiple environmental challenges in the upstream region of a river. Primarily, the focus is on erosion control, the deceleration of debris flow, and the prevention of sedimentation. The strategic implementation of this plan encompasses a range of methodologies, including topographical measurements, geotechnical testing, hydrological analysis, hydraulics analysis, and the meticulous development of a budget plan for the actual construction of the check dam. Within the study area, sedimentation issues stem from a debris flow characterized by a sediment discharge rate of 0.657 m3/s. This phenomenon coincides with a significant 25-year return period flood discharge of 9.134 m3/s. The proposed check dam emerges as a crucial intervention capable of effectively mitigating the situation for approximately 1 hour and 13 minutes, providing a targeted response to the persisting debris flow. To execute this plan, an estimated budget of IDR 460,859,000 has been projected. This financial allocation encompasses the expenses associated with topographical measurements, geotechnical testing, hydrological and hydraulics analyses, as well as the actual construction of the check dam. Overall, the proposed check dam stands as a multifaceted solution designed to harmonize environmental conservation with sustainable water resource management.
Erosion and sedimentation analysis as basic reference for land conservation planning on Lesti Sub-Watershed Sumanto, Hari; Dermawan, Very; Asmaranto, Runi
Civil and Environmental Science Journal (CIVENSE) Vol. 6 No. 1 (2023)
Publisher : Fakultas Teknik Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2023.00601.1

Abstract

The Lesti sub-watershed area is mostly steep mountain slopes, when the rain fall it carries erosion and sediment material. Erosion Hazard Level on Lesti Sub-Watershed were obtained as follows: Class I 11.92%; Class II 27.45%; Class III 43.85%; Class IV 13.06%; Class V 3.99%. Four (4) parameters overlaid to determine the land criticality level are: the map of land coverage, land slope, erosion risk level, and management aspect. Generally, Lesti Sub-Watershed is categorized as: very critical 0.14%; critical 4.61%; a rather critical 28.06%; critical potential 53.66%; and normal 13.51%. From SWAT analysis with total sub-basin of 39 and 1013 HRU (Hydrology Respon Unit) resulted the average value respectively soil erosion is 119.60 tons/ha/year; sediment yields 310.77 tons/ha/year; rainfall 2143.27 mm/year; and surface runoff 1120.65 mm/year. The suggestions of the watershed area conservancy requires a vegetative (planting) and mechanical (building) method. The vegetative method such as: alleys cropping; reforestation; agroforestry; relay cropping; soil cover cropping as natural green manure; living fence or windbreak; mixed cropping farm; mulch; environment greening; strip cropping with 20.65% effectivity; and filter strip with 26.03% effectivity. The mechanical method such as: contour tillage with 29.71% effectivity; terracing with 23.41% effectivity; check dam with 17.50% effectivity; and mound.
Co-Authors Abdul Azis Hoesein Achmad Marzuqi, Achmad Adihaningrum, Anita Andriyani Adilah, Ahmad Daffa Aditiya, Achmad Rizkiawan Aji, Yahya Muchaimin Alam Semesta, Aji Rahmanda Alpikarigo, Jano Andre Primantyo H., Andre Primantyo Andre Primantyo Hendrawan Anggara Cahyo Wibowo Anggara Wiyono Wit Saputra, Anggara Wiyono Wit Aniek Masrevaniah Ardiyansah, Ilham Artha, Vevy May Augustiman, Yoggie Azhary Aulia, Nanda Bahreisy, Arzil Abdillah Beselly Putra, Sebrian Mirdeklis Budi, Susilo Budiarto, Fajar Dwi Danudoro, Muhammad Darmawan, Sevila Maulidina Dewi Amalia Dhitaisma, Elsya Dian Chandrasasi Dian Sisinggih Dian Sisingih, Dian Donny Harisuseno DRIANTAMA, AL GHIFARY Emma Yuliani Endah Supriyani Endang Purwati RN Eri Prawati Ery Suhartanto Evi Nur Cahya Fathinun Najib Fikhruddin, Ahmad Fitrina, Halita Hadi Kusuma, Fajar Sadewa Handoko, Shubhananda Aulia hari siswoyo Hidayah, Susi Hidayat, Muhammad Nurjati Ikhsanti, Lanthika Dwi Ilmiawan, Ahlun Nazar Indrajayatama, Ridho Satria Ivan, Hans Kurniawan Hasan, Dimas Tri Kurniawati, Oktavia Triana Kusuma, Roorkeindia Paramita Lily Montarcih Limantara Linda Prasetyorini Listyana, Kurnia Ulfi M. Amar Sajali M. Bisri M. Janu Ismoyo Martius, Alifa Fajriani mas'udi, oldvika nurma Maulana, Muhammad Adnan Mochammad Ibrahim Moh. Sholichin Mohammad Bisri Mohammad Solichin, Mohammad Muhamad Rodhita Muhammad Taufiqurrohman, Muhammad Nimas Ayu Anggraini, Nimas Ayu Nisa, Anggie Aqidahtun Nur Cahya, Evi Nurhayati, Ima Nurwijayanti Oktaviariyadi, Nabila Paksi, R. Susenatama Jatayu Pitojo Tri Juwono Prima Hadi Wicaksono Putra Ramadhani, Adhinda Dwi Putri, Aradila Tiara Rachmadani, Lucia Putri Raden Mohamad Herdian Bhakti Rahawarin, Ridho Fahreza Reynaldo Jeffry Polie, Reynaldo Jeffry Rifai, A Rifnawati, Vina Rinaldy, Alif - Rispiningtati Rispiningtati Riyanto Haribowo Rizal Arifuddin K. Rizaldi, Odhi Rosamike, Mega Okvita Karinda Runi Asmaranto Rusardi, Olda Fadhilah Aprilia Salsabila, Sekar Saputra , Anggara Wiyono Wit Sholawatini, Nur Siregar, Jeremi Ishak Siswanti, Yuvika Rega Sri Wahyuni Suhardjono, - Suhartanto, Ery Sumanto, Hari Sumiadi, Sumiadi Suwanto Marsudi Swandani, Monique Adriana Syaiful Anam Syarief Fathoni, Syarief Tandisau, Deandy Gilang Tandju, Indah Nur Alifa Tri Budi Prayogo, Tri Budi Ussy Andawayanti Utami, Diah Tri Utomo, Gloria Dihan Vareza, Ervisto Thama WAHYU FIRMANSYAH Wahyudi, Aqsha Prahitna Wayan Andi Frederich Gunawan Widandi Soetopo Wirawan Putra, Rizky Almiraldi Wiryamanta, Dhimas Raditya Yanuar Hendra Pramana, Yanuar Hendra Yudha, Nevandria Satrya Zulkanzi, Achmad Kamili