Sri Eko Wahyuni
Jurusan Teknik Sipil FT. UNDIP Jl. Prof. H. Soedarto SH, Tembalang, Semarang 50275

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Kajian Panjang Data Historis yang Representatif pada Model Stokastik Gunawan, Setiarso; Wahyuni, Sri Eko; Suharyanto, Suharyanto
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 14, Nomor 2, Edisi XXXV, JUNI 2006
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (516.454 KB) | DOI: 10.14710/mkts.v14i2.2093

Abstract

Stochastic models are models to generate new data series based on historical data and have similar statistical parameter with statistic historical data. Methods of forecasting are developed base on statistic and mathematic science. The historical data are observed data or sample data. The limited data is become main constrain for extrapolation of data. The mean error of generated data should be lower than 5%, its mean data of generated have the validation rate on 95 %. Three samples location for study are Catchment of Bengawan Solo in Bojonegoro, Catchment of Serang in Kedungombo - Grobogan and Catchment of Citarum in Cirata - Bandung. The synthetic data and then is used to calculate the statistic parameter. Error of generated data is measured with relative error. The relative error is result of divided and subtract statistic parameter of generated data and the statistic parameter of historical data longest and statistic parameter of generated data. The result of data length analysis is relative error and historical length of the data. The analyzed result indicate that historical data are studied have representative historical data about 30 years length of data.Keywords: stochastic, historical data, synthetics data, representative data length and relative errorPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/2093[How to cite: Gunawan, S., Wahyuni, S.E. dan Suharyanto, 2006, Kajian Panjang Data Historis yang Representatif pada Model Stokastik, Jurnal Media Komunikasi Teknik Sipil, Volume 14, Nomor 2, pp. 129-141]
Menentukan Pola Debit Rata Rata Tahunan Wahyuni, Sri Eko
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 2, Edisi XXXII, JUNI 2005
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (187.6 KB) | DOI: 10.14710/mkts.v13i2.3908

Abstract

Time series analysis applied to hydrological data is generally used to forecast the in coming series of data such that use can make use of the information to manage, control, and anticipate the posible occurence of natural phenomena. This paper applied time series analysis to discharge data at Kali Kunto, Central Java. The data shows that the annual discharge at Kali Kunto tends to follow an ARMA (1,1) to ARMA (2,2). The appropriate ARMA model can be obtained through calibration stage. Keywords: time series analysis, discharge patternPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3908[How to cite: Wahyuni, S.E., 2005, Menentukan Pola Debit Rata Rata Tahunan, Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 2, pp. 50-56]
Distribusi Data Tahunan Menjadi Data Bulanan Wahyuni, Sri Eko
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 3, Edisi XXXIII, OKTOBER 2005
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (248.865 KB) | DOI: 10.14710/mkts.v13i3.3926

Abstract

In  the process of planning, design and management of water resources system, a long term data on hydrology is needed in order to obtain good analysis and final result. In Indonesia, usually it is very difficult to get a complete and appropriate data on hydrology at certain locations. To cope with the constrains and lack of data on hydrology as is mentioned above, experts on hydrology tend to solve the problems with the following methods: Stochastic analysis, Correlation and regressions analysis, and Simulation analysis on the watershed. In this paper, the phenomenon of the distribution of annual rainfall to monthly rainfall will be discussed utilizing stochastic analysis (i.e. temporal disagregation model), by presserving their statistical characteristics. The output of this model, which is quite reliable and can be use, among other, as a sound base for development of water resources and flood control.Permalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/3926[How to cite: Wahyuni, S.E., 2005, Distribusi Data Tahunan Menjadi Data Bulanan, Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 3, pp. 106-116]
EVALUASI DAN PERENCANAAN KEMBALI BENDUNG SAPON Utomo, Fajar Nugroho; Apriani, Dyah Wahyu; Wahyuni, Sri Eko; Hardiyati, Siti
JURNAL KARYA TEKNIK SIPIL Volume 2, Nomor 2, Tahun 2013
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Diponegoro

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Abstract

Sapon weir, which located at Kulon Progo, Yogyakarta, is a hydraulic structure that its water supply is from Progo river. Sapon weir are used to flow through ± 1850 ha rice field area, from ± 2250 ha before at 2,3 m3/sec, and to fulfill the water needs in 4 sub districts at 0,2 m3/sec. The increasing function of Sapon weir from only covering the irrigation needs, to fulfilling the water needs it is the implementation of the regulation no 8 year 2005 about water resources. The analysis of flood design using Haspers Metod, FSR Jawa-Sumatera, HSS Nakayasu, HSS Gama 1 with flood design comparation from Pasing Capacity Metod that has 1123,96 m3/sec of flood discharge in hundred year periode (Q100). The design of Sapon weir consists of main dam, complement buildings and requirement water supply pump for 1383,97 m3/sec of flood discharge hundred years period. The differences of weir design change the weir dimensions and the complement buildings.
EVALUASI DAN PERENCANAAN KEMBALI BENDUNG SAPON Apriani, Dyah Wahyu; Utomo, Fajar Nugroho; Wahyuni, Sri Eko; Hardiyati, Siti
JURNAL KARYA TEKNIK SIPIL Volume 2, Nomor 1, Tahun 2013
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (340.298 KB)

Abstract

Sapon weir, which located at Kulon Progo, Yogyakarta, is a hydraulic structure that its water supply is from Progo river. Sapon weir are used to flow through ± 1850 ha rice field area, from ± 2250 ha before at 2,3 m3/sec, and to fulfill the water needs in 4 sub districts at 0,2 m3/sec. The increasing function of Sapon weir from only covering the irrigation needs, to fulfilling the water needs it is the implementation of the regulation no 8 year 2005 about water resources. The analysis of flood design using Haspers Metod, FSR Jawa-Sumatera, HSS Nakayasu, HSS Gama 1 with flood design comparation from Pasing Capacity Metod that has 1123,96 m3/sec of flood discharge in hundred year periode (Q100). The design of Sapon weir consists of main dam, complement buildings and requirement water supply pump for 1383,97 m3/sec of flood discharge hundred years period. The differences of weir design change the weir dimensions and the complement buildings.
PERENCANAAN CHECK DAM SUNGAI DAWE KUDUS Mustaanah, Adibatul; Pinandoyo, Nur; Sugiyanto, Sugiyanto; Wahyuni, Sri Eko
JURNAL KARYA TEKNIK SIPIL Volume 2, Nomor 3, Tahun 2013
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (413.505 KB)

Abstract

Juana river’s located in two administrative regions Kudus and Pati had superficial. This is because the slope of the river is quite gentle and the level of environmental degradation in the watershed (DAS) Juana river’s have increased. Based on these conditions, it is necessary to plan the construction of sediment control (check dams) to reduce sedimentation along the river and optimize the function of the Juana river’s. Planning is performed on Dawe river’s ,the branch of Juana river’s. From the calculation results obtained 7 m high main dam, main dam foundation depth of 2,8 m, width of crest main dam 32 m, the water level above the crest 1,60 m, high freeboard 0,6 m, thick of main dam crest wing 2 mand capacity of sediments for 20.851,063  m³. The total cost needed to build the check dam Dawe river’s is Rp. 6.511.846.000,00 already includes VAT and 23 weeks old craftsmanship.
PERENCANAAN PEMBANGKIT LISTRIK TENAGA MIKROHIDRO (PLTMH) KARANGTALUN, KABUPATEN TEMANGGUNG Aprilianto, Rahmat Ramadhany; Fungkas, Achmad; Wahyuni, Sri Eko; Suharyanto, Suharyanto
JURNAL KARYA TEKNIK SIPIL Volume 2, Nomor 2, Tahun 2013
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Diponegoro

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Abstract

Generally in remote rural areas, especially in the Temanggung regency Karangtalun are difficult to reach PLNs electrical supply but have the potential for huge energy of river water, then it can be utilized by the construction of Pembangkit Listrik Tenaga Mikrohidro (PLTMH) for rural electricity needs can be fulfilled with the population evenly so that no society can not feel the electricity in the place they live in this modern era. In areas that are Logung river on the border between Kendal and Temanggung regency that have the potential of water (Q) of 1,30 m3/sec with a 15 m high waterfall. Then it can generate power for the turbine at 137,85 Kw with the type of cross flow turbine capable to power in the Karangtalun as many as 153 homes. The costs incurred for the development of Pembangkit Listrik Tenaga Mikrohidro (PLTMH) Karangtalun Rp. 11.859.530.000,00 with construction work for 91 weeks.
PERENCANAAN BENDUNGAN MANONJAYA KABUPATEN TASIKMALAYA, JAWA BARAT Hidayat, Muhammad Qorib; Shofa, Kalih Amanis; Wahyuni, Sri Eko; Darsono, Suseno
JURNAL KARYA TEKNIK SIPIL Volume 2, Nomor 3, Tahun 2013
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Diponegoro

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Abstract

Increasing water demand is caused of increasing population at Tasimalaya Regency, inversely with water supply to that area. This problem is solved by constructing a reservoir located in Tasikmalaya regency, West Java that is the Manonjaya Dam. Manonjaya Dam is a earthfill dam with a vertical core which is built at Citanduy River with 590.422 km2 of catchment area. This aims of dam to fulfill public water supply and irrigation at Tasimalaya Regency. Manonjaya Dam is designed with 100 years of return period with inflow discharge valued 513.9 m3/second. Manonjaya Dam is designed 23.5 meters of height, with 3,9 million cubic meters of capacity. The dam has equipped with 3,5 meters of diameter outlet pipe, spillway with 30 meters of width, and USBR III of  stilling basin. Construction cost of Manonjaya Dam is around 154 billion Rupiahs with scheduled for 33 weeks.
PERENCANAAN BENDUNG PROGO JUMO,SUNGAI PROGO KABUPATEN TEMANGGUNG Indra, Bhre Brahmasta; Angghita, Lintang Jata; Wahyuni, Sri Eko; Kurniani, Dwi
JURNAL KARYA TEKNIK SIPIL Volume 2, Nomor 1, Tahun 2013
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Diponegoro

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Abstract

Progo Jumo Weir is located on Progo River, Temanggung Regency. Progo Jumo Weir only serve the irrigation area in the left side of Progo River that formerly are rainfed rice field with 1.278 Ha wide. The maksimum intake discarge is 1,942 m3/sec. FJ Mock method is used to calculate the dependable discharge of Progo river at 20% dry. Designed flood discharge calculated from HSS Gama I method is 186,041 m3/sec for 100 years return period (Q100 = 186,041 m3/sec). Rounded weir head with  4,85 m in height and +713,07 m from mean sea level is used. The weir is 39 m in effective width and the length of upstream apron floor is 8 m. . This weir use USBR Type III stilling basin with 8 m in length. The flushing gate uses four gates each 1,5 m in width. The implementation of this project  is 42 weeks and the budget plan is  Rp. 13.210.231.000,00.
PERENCANAAN BANGUNAN PENGENDALI SEDIMEN, ZONA NON CEKUNGAN AIR TANAH, HULU SUNGAI SERANG, WONOSEGORO, KABUPATEN BOYOLALI Prasetiyo, Rizki Adi; Amali, Adib; Wahyuni, Sri Eko; Kodoatie, Robert J.
JURNAL KARYA TEKNIK SIPIL Volume 3, Nomor 2, Tahun 2014
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Diponegoro

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Abstract

The location plan of Wonosegoro Check Dam in the Upper Serang river, District of Wonosegoro regency of Boyolali, has the hydrogeological characteristics of Non ground water basin (Non CAT). The Serang Wonosegoro watershed has 177.16 km 2 area. The flood discharge plan obtained by the Rational method in the amount of  581.425 m3/second with a return period of 100 years. Check Dam has design by reinforced concrete with effective main dam height of 2 m, Sub Dam 1 m, and width 55 m, summit peak elevation of dam + 118.93 m above sea level and length of apron 26.390 m. Results of sediment transport by Ackers & White method is Qs = 5,174 tonnes / day. The magnitude of the rate of sedimentation in the Serang watershed amounted to 17.579 tons / ha / year. Time project of execution plan is 28 weeks with a budget plan is Rp. 6,422,807,000.00.