Prianto, Rantika Aprillia Elsa (2025) Desain Struktur Bangunan Pelimpah (Spillway) Pada Bendungan Bagong di Kabupaten Trenggalek, JawaTimur. Undergraduate thesis, Universitas Pembangunan Nasional "Veteran" Jawa Timur.
![[img]](https://repository.upnjatim.ac.id/style/images/fileicons/text.png) |
Text (COVER)
21035010127_COVER.pdf Download (1MB) |
|
Text (BAB I)
21035010127_BAB I.pdf Download (308kB) |
|
Text (BAB II)
21035010127_BAB II.pdf Restricted to Repository staff only until 3 November 2027. Download (1MB) |
|
Text (BAB III)
21035010127_BAB III.pdf Restricted to Repository staff only until 3 November 2027. Download (171kB) |
|
Text (BAB IV)
21035010127_BAB IV.pdf Restricted to Repository staff only until 3 November 2027. Download (3MB) |
|
Text (BAB V)
21035010127_BAB V.pdf Download (135kB) |
|
Text (DAFTAR PUSTAKA)
21035010127_DAFTAR PUSTAKA.pdf Download (45kB) |
|
Text (LAMPIRAN)
21035010127_LAMPIRAN.pdf Restricted to Repository staff only Download (5MB) |
Abstract
During the rainy season, excess water flow often causes flooding, while during the dry season, water availability decreases even though demand remains high. Dams function as water storage and regulation facilities, with one of their main components being a spillway. The spillway functions to channel excess water discharge to prevent overtopping, as in the Bagong Dam in Trenggalek Regency. This study examines rainfall intensity, design flood discharge, spillway dimensions, and construction stability. Rainfall data were obtained from nearby stations and analyzed using Gumbel, Normal, and Log Pearson Type III distributions to determine the design rainfall. The analysis results were then used to develop a base curve for flood discharge calculations using the Rational Method and the Nakayasu Synthetic Unit Hydrograph. The results show that peak flood discharge increases with the return period. The Nakayasu HSS method produces a more representative discharge because it considers the response of the watershed to rainfall. This research provides an important contribution to improving the accuracy of hydrological planning and spillway technical design as flood control. The design results yield a planned flood discharge of 216.31 m³/second, a total water demand of 0.30 m³/second for 2051, an effective capacity of 15,442,881 m³, a dead capacity of 119,850 m³, and a total capacity of 15,562,731 m³. The spillway is designed with a circular crest at an elevation of +322.65 m, a width of 30 m, a vertical core of homogeneous earth fill, a base elevation of +250 m, and a guardrail height of 5 m. Stability analysis indicates safe conditions, both against overturning and sliding, at normal and flood water levels. Keywords: Rainfall Intensity, Flood Discharge, Spillway Structure, Stability
| Item Type: | Thesis (Undergraduate) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Contributors: |
|
||||||||||||
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||||||||
| Divisions: | Faculty of Engineering > Departement of Civil Engineering | ||||||||||||
| Depositing User: | RANTIKA APRILLIA ELSA PRIANTO | ||||||||||||
| Date Deposited: | 03 Nov 2025 08:27 | ||||||||||||
| Last Modified: | 03 Nov 2025 08:27 | ||||||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/46043 |
Actions (login required)
 |
View Item |