Abstract
The Poso River is a river located in Poso Regency, Central Sulawesi Province, which has a length of 74.58 km, and watershed area of 1092.810 km2. Energy in the Poso River is used for hydroelectric power plant (PLTA). With the construction of the Poso hydropower plant, maximum flood discharge data is needed for the prevention of Poso hydro power plant safety. In calculating the flood discharge, the method used is a synthetic unit hydrograph. Synthetic unit hydrograph is a graph of the relationship between flow rate (Q) and time (t). In this study, the method used to calculate the designed flood discharge is the Snyder synthetic unit hydrograph method and the Soil Conversation Service (SCS) synthetic unit hydrograph. The aims of this study are to determine the largest flood discharge value and to determine the hydrograph shapes of the two methods. The parameters that will be obtained from both methods are peak time (Tp), base time (Tb) and peak discharge (Qp). From the analysis it can be found that in the Snyder SUH method, the peak time (Tp) is 12.616 hours, the base time (Tb) is 67.276 hours with a peak discharge (Qp) of 21.672 m3sec. Whereas in the SCS SUH method, the peak time (Tp) is 10.954 hours, the base time (Tb) is 57.268 hours with a peak discharge (Qp) of 20.751 m3/sec. The result demonstrates the result that the largest flood discharge has occurred in the Snyder SUH method.
Highlights
Abstrak: The Poso River is a river located in Poso Regency, Central Sulawesi Province, which has a length of 74.58 km, and watershed area of 1092.810 km2
With the construction of the Poso hydropower plant, maximum flood discharge data is needed for the prevention of Poso hydro power plant safety
Synthetic unit hydrograph is a graph of the relationship between flow rate (Q) and time (t)
Summary
Dalam perencanaan sumber daya air dibutuhkan data debit banjir rencana yang realistis. Jika data debit banjir yang tersedia yang tersedia cukup panjang (>20 Tahun), maka metode analisis probabilitas dapat digunakan untuk menghitung debit banjir, sedangkan apabila data yang tersedia hanya berupa data hujan dan karakteristik daerah aliran sungai (DAS) metode yang disarankan ialah Hidrograf Satuan Sintetis [1]. Metode hidrograf satuan sintetik adalah metode yang umum digunakan dan berperan penting dalam berbagai perencanaan di bidang sumber daya air, terutama dalam menganalisis debit banjir DAS yang tidak terukur. Beberapa metode hidrograf satuan sintetik yang populer dan umum digunakan di indonesia untuk menghitung debit puncak dan bentuk hidrograf banjir, seperti HSS ITB-1, HSS ITB-2, HSS Nakayasu, HSS Synder- Alexejev, HSS Limantara HSS Soil Conservation Service (SCS), dan GAMA-1. Dari latar belakang tersebut penulis terdorong untuk melakukan penelitian di DAS Poso melalui studi kasus“Analisis Hidrograf Satuan Sintetis (HSS) DAS Poso dengan metode HSS Synder dan HSS Soil Conversation Service (SCS)”. Dengan mendapatkan hasil debit banjir maksimum dan mengetahui bentuk hidrograf dari kedua metode tersebut
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
