ACADSTAFF UGM
| Judul/Title | Evaluation of Flushing Efficiency at a Sand Trap: A Case Study of Pengasih Weir, Special Region of Yogyakarta |
| Penulis/Author | Ansita Gupitakingkin Pradipta, S.T., M.Eng. (1) ; GINA ISNA NAFISA (2); Dr. Murtiningrum, S.T.P., M.Eng. (3); Chandra Setyawan, STP., M.Eng., Ph.D. (4); Prof. Dr. Ir. Sigit Supadmo, M.Eng. (5) |
| Tanggal/Date | 20 2020 |
| Kata Kunci/Keyword | |
| Abstrak/Abstract | A sand trap is a part of the main building in an irrigation system. Its function is to settle the sediment that is carried away from a river stream. A sand trap needs to be flushed periodically with an optimal and efficient mechanism. This research aims to evaluate the flushing efficiency of the sand trap of the Pengasih Weir. The data used are the bedload samples along the channel and the sand trap's existing flushing mechanism data. The result showed that the Pengasih Weir's sand trap's most dominant bedload grains were fine sand with a diameter of between 0.075 and 0.425 mm as much as 77.2%. The bedload includes uniformly and well-graded sediment due to the Cu and Cc values are 2.751 (less than 5) and 1.027 (in the range of 1 – 3), respectively. The flushing mechanism was divided into two stages. The first stage was the combination of 1.06 m/s flow velocity and 1.1 m flow depth, and the second stage was the combination of 1.59 m/s flow velocity and 0.35 m flow depth. Both two stages were efficient in flushing the sand trap of the Pengasih Weir. It was apparent from all the bedload grain moved based on the concept of Shields. |
| Level | Internasional |
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