Tama, Danny Riyadi and Prof. Dr. Ir. Lily Montarcih Limantara, M.Sc and Dr. Ery Suhartanto, ST., MT. and Dr. Eng. Yatnanta Padma Devia, ST., MT (2024) Pemodelan Wflow Untuk Perkiraan Inflow Guna Menunjang Kegiatan Alokasi Air Waduk Wonogiri. Doktor thesis, Universitas Brawijaya.
Abstract
Penelitian ini bertujuan untuk memprediksi debit (limpasan) dari curah hujan yang modelnya dibangun dengan menggunakan W-flow. Lokasi penelitian dilakukan di Waduk Gajah Mungkur (Wonogiri)-Indonesia. Estimasi aliran masuk waduk memiliki peran penting terutama dalam skema operasi dan manajemen waduk. Namun demikian, heterogenitas curah hujan yang kompleks secara spasial dan temporal serta konteks fisiografi DAS menyebabkan pengembangan model limpasan-hujan real time yang dapat memprediksi debit waduk secara akurat menjadi tantangan tersendiri dalam pengembangan sumber daya air. Dalam kaitannya dengan analisis dan prediksi curah hujan, kendala dan permasalahan yang masih sering dihadapi adalah minimnya ketersediaan data curah hujan yang teramati baik secara spasial maupun temporal, deret waktu data curah hujan yang belum terlalu panjang dan lengkap, serta jumlah stasiun curah hujan yang kurang merata. Metodologi penelitian terdiri dari studi literatur, pengumpulan data terutama data curah hujan selengkap mungkin, untuk membangun model aliran W, kemudian melakukan kalibrasi model dan menganalisis prediksi debit inflow waduk secara real time untuk operasi. Hasil penelitian menunjukkan bahwa debit andalan DAS Wonogiri menunjukkan bahwa terdapat 2 debit puncak yang terjadi pada Februari-II (paruh kedua bulan Februari) dan Desember-II (paruh kedua bulan Desember). Namun, debit menurun pada bulan Juli dan mencapai debit terendah pada bulan Oktober-II (paruh kedua bulan Oktober).
English Abstract
Abstract— This study aims to predict discharge (runoff) from rainfall that is modeled using W-flow. The research was conducted at Gajah Mungkur Reservoir (Wonogiri)- Indonesia. Reservoir inflow estimation has an important role especially in reservoir operation and management schemes. However, the heterogeneity of rainfall complex spatial and temporal rainfall heterogeneity and the physiographic context of the watershed lead to the development of real time rain-runoff models that can accurately predict reservoir discharge is a challenge in reservoir resource development. to be a challenge in water resources development. In relation to to rainfall analysis and prediction, the constraints and problems that are still often faced are the lack of availability of rainfall data. faced is the lack of availability of observed rainfall data both spatially and temporally. and temporal, the time series of rainfall data that is not too long and complete, and the uneven number of rainfall stations. The research methodology consists of a literature study, data collection, especially rainfall data. data, especially rainfall data as complete as possible, to build a W flow model, then perform calibration of the model and analyzing the prediction of reservoir inflow discharge in real time for operation. The results showed that the mainstay discharge of Wonogiri watershed showed that there are 2 peak discharges that occur in February-II (second half of February) and December-II (second half of December). However, the discharge decreased in July and reached the lowest discharge in October-II (second half of October).
| Item Type: | Thesis (Doktor) |
|---|---|
| Identification Number: | 0624070002 |
| Uncontrolled Keywords: | Curah hujan, run-off, model, W-flow.Rainfall, run-off, model, W-flow. |
| Divisions: | S2/S3 > Doktor Teknik Sipil, Fakultas Teknik |
| Depositing User: | soegeng Moelyono |
| Date Deposited: | 25 Mar 2024 01:59 |
| Last Modified: | 25 Mar 2024 01:59 |
| URI: | http://repository.ub.ac.id/id/eprint/217520 |
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