Achsan (2015) Analisis Kecenderungan Sedimentasi Di Waduk Bili-Bili dalam Upaya Keberlanjutan Usia Guna Waduk. Magister thesis, Universitas Brawijaya.
Abstract
Waduk Bili-Bili merupakan salah satu waduk yang terbesar di Provinsi Sulawesi Selatan yang dikelola oleh BBWS Pompengan Jeneberang. Waduk Bili-Bili direncanakan dengan usia guna efektif 50 tahun, dan sampai dengan tahun 2011 (data terakhir sebagai acuan) waduk ini telah beroperasi selama 13 tahun. Pada tahun 2004 terjadi longsoran Gunung Bawakaraeng yang berada di hulu Waduk dan menyebabkan tingginya tingkat sedimentasi di Waduk. Studi ini dilakukan untuk mengetahui persentase sedimen yang mengendap di kapasitas tampungan waduk, berapa usia guna Waduk Bili-bili yang tersisa, serta upaya yang dilakukan untuk mempertahankan usia efektif waduk. Dalam penelitian ini dilakukan perhitungan pola distribusi sedimen berdasarkan metode pengukuran aktual dan metode empiris penambahan luas (Area Increment Method) dan pengurangan luas (Area Reduction Method). Sisa usia guna waduk Bili-Bili dihitung menggunakan dua pendekatan yaitu pendekatan volume dan pendekatan elevasi. Kecenderungan sedimentasi yang terjadi berdasarkan total sedimentasi yang masuk pada tahun 2011 sebesar 84,81 Juta m3 dengan persentase 79,17% berada pada area tampungan efektif, 18,14% pada area tampungan mati dan 2.69% pada tampungan banjir. Hasil analisa penyusutan kapasitas tampungan Waduk Bili-Bili yang terjadi pada tahun 2012 sebesar 24,37%, tahun 2018 sebesar 31,62%, tahun 2028 sebesar 39,92% dan tahun 2048 sebesar 50,33%. Berdasarkan hasil analisa sisa usia guna Waduk Bili-Bili dengan pendekatan elevasi +59,00, usia guna waduk Bili-Bili sudah habis dan dengan pendekatan volume memberikan hasil sisa usia guna waduk 11,5 tahun. Kata Kunci : Waduk Bili-Bili, Sedimentasi, Kapasitas Tampungan, Usia Guna Waduk.
English Abstract
Bili-Bili Reservoir is one of largest reservoirs in Province of South Sulawesi which is regulated by BBWS Pompengan Jeneberang. Bili-Bili reservoirs was planned effective for 50 years, recently in 2011 ( reference of latest data) this reservoir has been in operation for 13 years since was built. In 2004 re were land slides from Mount Bawakaraeng in upstream reservoirs and causing high rates of sedimentation in reservoir. This study was conducted to determine percentage of sediment that settles in reservoir storage capacity, how is effectiveness of Bili-Bili Reservoir remaining and also efforts made to maintaining effectiveness of reservoirs. In this research, distribution pattern calculations based on actual measurement method and enlargement Empirical Area Increment Method and Empirical Area Reduction Method. effectiveness of usefull life of Bili-Bili to reservoir is calculated using two approaches, volume approach and elevation approach. Based on analisys of Sedimentation tendency which was entering in 2011 was about 84.81 million m3 of total sediments with a percentage of 79.17% was in effective storage area, 18.14% in area of dead storage and 2.69% in flood control pool. depreciation of reservoir storage capacity Bili-Bili that occurred in 2012 was about 24.37%, and it will increase about 31.62% in 2018, meanwhile in 2028 will about 39.92% and 50.33% for year 2048. Based on analysis of effectiveness life of Bili-Bili by reservoir elevation approach of +59.00, Bili-Bili reservoir has no longer effectiveness, but by using yield residual volume approach in reservoir has still effectiveness of 11.5 years. Keywords: Bili-Bili Reservoir, Sedimentation, Storage Capacity, Reservoir usefull Life.
| Item Type: | Thesis (Magister) |
|---|---|
| Identification Number: | TES/628.132/ACH/a/2015/041501334 |
| Subjects: | 600 Technology (Applied sciences) > 628 Sanitary engineering > 628.1 Water supply |
| Divisions: | S2/S3 > Magister Teknik Pengairan, Fakultas Teknik |
| Depositing User: | Endang Susworini |
| Date Deposited: | 22 Jun 2015 14:55 |
| Last Modified: | 22 Jun 2015 14:55 |
| URI: | http://repository.ub.ac.id/id/eprint/158865 |
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