Articles

Found 5 Documents
Search

Strategi Pemeliharaan Jaringan Irigasi Daerah Irigasi Blimbing Wibowo, Roni Sigit; Wardoyo, Wasis; Edijatno, Edijatno
Jurnal Aplikasi Teknik Sipil Vol 16, No 1 (2018)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (273.645 KB) | DOI: 10.12962/j2579-891X.v16i1.2793

Abstract

Daerah Irigasi (DI) Blimbing mengairi lahan pertanian sebesar 319 Ha. Kondisi fisikjaringan irigasi banyak mengalami kerusakan yang mengakibatkan menurunnya fungsijaringan irigasi. Sehingga diperlukan pemeliharaan untuk mengembalikan fungsi jaringanirigasi ke kondisi semula. Tujuan dari penelitian ini adalah untuk memperoleh strategipemeliharaan jaringan irigasi DI Blimbing yang optimal, dengan memperhatikan biaya.Tahap awal adalah mengidentifikasi, menilai kondisi fisik dan fungsi bangunan irigasi danmembuat urutan prioritas pemeliharaan jaringan irigasi. Kemudian menghitung Benefitand Cost untuk menilai kelayakan. Penelitian ini menggunakan Metode Linier Programmingyang terdiri dari fungsi tujuan dan kendala. Sebagai fungsi tujuan adalahmemaksimumkan nilai prioritas/nilai manfaat, sedangkan untuk fungsi kendala yaituketerbatasan biaya. Mengacu biaya sebesar Rp. 100.000.000, permodelan/optimasipemeliharaan yang dikaitkan untuk memaksimalkan nilai prioritas atau nilai manfaatdiperoleh ruas yang dapat diperbaiki sebanyak 7 ruas dengan anggaran sebesar Rp.99.998.877. Hasil optimasi dengan memaksimalkan nilai prioritas sama dengan hasiloptimasi dengan memaksimalkan nilai manfaat.
DAS Ampal Analisa Fungsi dan Pengaruh Bangunan Pengendali Banjir DAS Ampal Kota Balikpapan Kadar Yanti, Rossana Margaret; Edijatno, Edijatno; Lasminto, Umboro
Specta Journal Vol 2 No 3 (2018): SPECTA Journal of Technology
Publisher : Specta Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (548.979 KB) | DOI: 10.0610/specta.v2i3.10

Abstract

Ampal Catchment Area has 25.273 km2 area and 4.699 km main river length, which planned to have 13 flood control construction. Until 2017, this catchment area has only three flood control construction. The watershed has only three built-in batters that are used to reduce the amount of flood discharge flowing on the Ampal river. Based on these conditions, it is necessary to analyze the magnitude of the difference of flood peak discharge on the existing condition (three bendali) compared with the condition of the plan (thirteen bendali). Therefore, analyzed the function and influence of flood control construction in Ampal Catchment Area by counting the flood peak discharge in each condition. From the analysis result, obtained the amount of peak discharge flowing in Ampal river existing condition is equal to 170,40 m3/s while at the condition of plan is equal to 83,80 m3/s. From the results of analysis, it is stated that the magnitude of the decrease of debit (?Q) after all the builds is 86.60 m3/s.
DAS Ampal Analisa Fungsi dan Pengaruh Bangunan Pengendali Banjir DAS Ampal Kota Balikpapan Kadar Yanti, Rossana Margaret; Edijatno, Edijatno; Lasminto, Umboro
SPECTA Journal of Technology Vol 2 No 3 (2018): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (548.979 KB) | DOI: 10.35718/specta.v2i3.10

Abstract

Ampal Catchment Area has 25.273 km2 area and 4.699 km main river length, which planned to have 13 flood control construction. Until 2017, this catchment area has only three flood control construction. The watershed has only three built-in batters that are used to reduce the amount of flood discharge flowing on the Ampal river. Based on these conditions, it is necessary to analyze the magnitude of the difference of flood peak discharge on the existing condition (three bendali) compared with the condition of the plan (thirteen bendali). Therefore, analyzed the function and influence of flood control construction in Ampal Catchment Area by counting the flood peak discharge in each condition. From the analysis result, obtained the amount of peak discharge flowing in Ampal river existing condition is equal to 170,40 m3/s while at the condition of plan is equal to 83,80 m3/s. From the results of analysis, it is stated that the magnitude of the decrease of debit (?Q) after all the builds is 86.60 m3/s.
Evaluating Error of Temporal Disaggregation from Daily into Hourly Rainfall using Heytos Model at Sampean Catchments Area Hidayah, Entin; Anwar, Nadjadji; Edijatno, Edijatno; Iriawan, Nur
IPTEK The Journal for Technology and Science Vol 21, No 1 (2010)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v21i1.25

Abstract

Developing a rainfall-runoff model sufficient to flood prediction hourly rainfall data. Lack of automatic rain gauge for high resolution rainfall in catchment area can be an obstacle for the modeling. Otherwise, the manual rain gauges may spread on all of catchments areas, providing daily rainfall. Daily rainfall disaggregation to hourly rainfall is an innovation to get higher temporal resolution of the rainfall. This paper attempts to evaluate the implementation of rainfall disaggregation model in Sampean Catchments Area using Heytos. The proposed parameter optimation use Moment Performance model that tested by calibrating it with available hourly data. The results of model indicated that only data within five months had good performance. The estimation result showed that relative error total of January, February, August, November, and December was less than one. In case of March, April, May, June, July, September, and October the model could not result respectively to generate model.
A Comparative Study of Water Quality Characteristics at East Java River Wahyuningsih, Sri; Anwar, Nadjadji; Edijatno, Edijatno; Karnaningroem, Nieke
IPTEK The Journal for Technology and Science Vol 21, No 4 (2010)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v21i4.91

Abstract

Water is the natural resources have the function of very importance for human life and also as authorized capital in development. Water will influence by the other component. Exploiting of water to support all human life must done with wise action to management so that not result damage at water resource. As place relocation of water hence river have the selected capacities that able to change because natural activity and antropogenik. This research was conducted in nine major rivers in East Java. The objectives of this study were: 1) Identifying the characteristics and concestration range of water quality parameter, 2) Comparison the level of pollution in rivers in East Java. The results of this study indicated that the characteristic of water quality parameter of rivers in East Java were generally physical, chemical and biological. The comparison result of water quality parameter basically showed that in general the pH was still under threshold that had been determined, that was pH from 6 to 9. In general, DO concentration ranged from 0.5 mg/l to 7 mg/l, BOD concentration ranged from 3 mg/l to 11 mg/l and the COD concentration ranged between 0.5 mg/liter to 35 mg/l.