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EXTREME WEATHER IMPACTS ON CITARUM CASCADE RESERVOIR OPERATION PATTERN 2011 Petrus Syariman; Agus Heru
JURNAL TEKNIK HIDRAULIK Vol 2, No 1 (2011): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (769.983 KB) | DOI: 10.32679/jth.v2i1.245

Abstract

Analisis Fenomena Kehilangan Air Sungai Cisuwarna Petrus Syariman; Hendarmawan Hendarmawan
JURNAL TEKNIK HIDRAULIK Vol 1, No 1 (2010): Jurnal Teknik Hidraulik
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1305.753 KB) | DOI: 10.32679/jth.v1i1.230

Abstract

Discharge from Cisuwarna River isone of the main inflows to Rawa Danau highly expected by local peopleeither upstream or downstream.Part of water loss of Cisuwarna caused not optimum domestic water use.Water loss indication can be seen from the simulation results by using SSARR model that calculateddischarge greater than observed.The methods used for water loss analysis are simultaneous dischargemeasurement, rainfall runoffand coefficient correlation analysis, and geological map interpretation.Theanalysis result has proven that the average water loss at Cisuwarna is about 12 .4 million cumec per year orabout 45% of calculated discharge.Water loss is assumedto flow into the fault before flowing into rawaDanau.Waterdeficitisalwaysgoingthrough everyyearinRawaDanau.
PERINGATAN DINI BANJIR BERBASIS DATA HIDROLOGI TELEMETRI DI DAS CITARUM HULU Petrus Syariman; Segel Ginting
JURNAL TEKNIK HIDRAULIK Vol 2, No 2 (2011): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (585.609 KB) | DOI: 10.32679/jth.v2i2.254

Abstract

Kejadian banjir yang sering melanda Dayeuhkolot sudah sangat memprihatinkan, dan berbagai upayapenanggulangan telah dilakukan melalui pendekatan struktural dengan normalisasi sungai, pembuatantanggul, dan lainlain.Namun upaya tersebut belum memberikan hasil yang maksimal. Pendekatan lainnyayang diusulkan adalah melalui upaya nonstruktural dengan membuat peringatan dini banjir berbasis datahujan telemetri. Diharapkan dengan upaya tersebut dapat meminimalisasi risiko yang dihadapi olehmasyarakat. Dalam pendekatan dengan peringatan dini banjir berbasis data hujan telemetri tersebut,terlebih dahulu dilakukan analisis untuk mengetahui jeda waktu yang diperlukan oleh awal mulainya hujansampai ke puncak banjir. Dari hasil analisis yang digunakan diperoleh lamanya waktu jeda antara awalmulai hujan sampai dengan puncak banjir di Nanjung sekitar 11 jam untuk pos hujan Dampit, Ciparay, danCipadung dan sekitar 12 jam untuk pos hujan Bandung. Namun untuk daerah Dayeuhkolot diperlukan waktusekitar 6 jam untuk mencapai waktu puncak banjir dengan menggunakan data hujan Dampit, Ciparay, danCipadung, sementara untuk data dari pos hujan Bandung diperlukan waktu sekitar 7 jam. Dengandiketahuinya waktu jeda yang cukup lama tersebut, diharapkan masih memiliki waktu untuk dapatmemberikan peringatan kepada masyarakat yang bermukim di sekitar bantaran banjir Dayeuhkolot untukmengevakuasi semua harta bendanya.
PENELITIAN DRAINASE JALAN RAYA (STUDI KASUS RUAS JALAN PALIMANAN JATIBARANG KM Petrus Syariman
JURNAL SUMBER DAYA AIR Vol 5, No 1 (2009)
Publisher : Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (725.096 KB) | DOI: 10.32679/jsda.v5i1.428

Abstract

Highways are often damaged by excessive water content below road surface. The road section betweenPalimanan - Jatibarang, West Java is an area often flooded particularly at left and right sides of road. Toprevent floods, a study on these ditches had been implemented to determine the dimension of a ditchproportional with hydrological conditions in its vicinity. The method applied in this study had been themapping of detailed highway situation, rainfall intensity analysis, design flood analysis, and flow dischargesimulation using a HEC-HMS model. Study results showed that flow discharge passing through the out-letdrainage is 3.88 m3/sec and 6.29 m3/sec respectively, for a return period of two and five years. With a flowvelocity assumption of 1.2 m/sec and a cross sectional area of out-let drainage on site of 3.19 m2, inundationtime at vicinity of out-let is respectively four hours for a return period of two years, and six and half hours for areturn period of five years. The average cross sectional dimension recommended for a return period of twoyears is 1.36m x 2.0m, and for a return period of two years, 2.0 m x 2.0 m.
Potential of Mainstay Debit of Lematang River, South Sumatra for the Regional Planning for Irrigation at Dongku and Modong Petrus Syariman; Kustaman Kustaman
Forum Geografi Vol 13, No 1 (1999)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v13i1.465

Abstract

District Muara Enim, South Sumatra Province has a potential region to develop an agriculture sector especially rice fields. The water resource such as Water Enim and Lamatang River support the capacity of the developing. Acording to the study in 1985 carried out by the BCEOM and Kampsax consultants, the lower Lematang region. Dangku Kiri, Dangku Kanan, and Modong with the total area of about 10.000 Ha has a highly potential to built rice field ith the technical irrigation. Based on the information, research of dependable flow of Lematang River to the irrigation requirement had been carried out by analyzing of all data collecting in those area  such as rainfall, climate, and discharge data. The result shows that the dependable flow of 20% probability of non exceedence is about 65.3 m3/sec. It is potential enough compare with the irrigation requirement of about 1.85 l/sec/ha or 18.5 m3/sec of total irrigation area. Technically, dependable flow of Lematang River is big enough but some constraints will appear especially in determining of free intake or weir because the river gradient is too low and the main  channel has been used by the people for navigation. To increase the accuracy of the research, an Automatic Water Level Recorder and one climatological station should be installed respectively in the alternative I location and in the irrigation area.