Manahan, Eric Thomas and Afandi, Haekal Rizky (2015) Perencanaan Bendung Tetap Untuk Jaringan Irigasi Gemarang Kecamatan Kedunggalar Kabupaten Ngawi. Diploma thesis, Institut Technology Sepuluh Nopember.
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Abstract
Bendung Gemarang terletak di Kali Soko Bawah
desa Gemarang kecamatan Kedunggalar kabupaten
Ngawi. Air dari Bendung Gemarang ini digunakan untuk
mencukupi kebutuhan air jaringan irigasi (JI) Gemarang
dengan sawah seluas 30 Ha.
Perencanaan bendung didasarkan pada debit
banjir rencana dengan periode ulang 50 tahun (Q50).
Debit rencana menggunakan data curah hujan 20 tahun
dari 3 (tiga) stasiun curah hujan. Hujan rata – rata
ditentukan dengan metode Thiessen Polygon dan hujan
rencana dengan Gumbel serta dengan metode Nakayasu
didapat Q50 sebesar 61.056 m3/det.
Berdasarkan Q50 kondisi geografi dan geologi
didapatkan dimensi bendung : lebar total bendung (B)
yaitu 17 meter dan tinggi bendung 3 meter dengan
elevasi mercu bendung +77. Mercu bendung tipe bulat,
kolam olak direncanakan tipe bak tenggelam dengan jari
– jari 4,5 m. Dari analisis stabilitas tubuh bendung dalam
kondisi stabil terhadap geser, guling, erosi bawah tanah
(piping), retak dan bangunan tidak turun.
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Gemarang weir located in Soko Bawah river the
village of Gemarang district of Kedunggalar. Water
from Gemarang weir is used for meet the water needs of
irrigation areas Gemarang with rice acreage of 30 ha.
Design based on the dam flood discharge plan
with a return period of 50 years (Q50). Discharge plan
using rainfall data series of 20 years of 3 (three) of
rainfall stations. The average rainfall is determined by
Thiessen Polygon method, rain plans to Normal Method
and the method of Nakayasu Q50 obtained 61.056 m3/sec.
Based on the Q50 the geography and geology
obtained weir dimensions : total width of the weir (B) is
17 meters and high is 3 meters with top elevation weir
+77. Top weir planned summit round type, and the pool
planned Sub Merged Bucket type, with radius of circle
4,5 m. From the analysis of the stability the dam in
stable condition against sliding, rolling, underground
erosion (piping), crack and the building does not go
down.
| Item Type: | Thesis (Diploma) |
|---|---|
| Additional Information: | RSS 627.8 Man p |
| Uncontrolled Keywords: | Bendung Gemarang, analisa hidrologi, stabilitas |
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering > TC167 Dams, reservoirs T Technology > TE Highway engineering. Roads and pavements > TE215 Drainage |
| Divisions: | Faculty of Civil Engineering and Planning > Civil Engineering > 22401-(D3) Diploma 3 |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 18 Jun 2019 04:20 |
| Last Modified: | 18 Jun 2019 04:20 |
| URI: | http://repository.its.ac.id/id/eprint/63147 |
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