Sadhu, Muhammad Aria (2020) Perencanaan Pengendalian Muara Kali Grindulu Pacitan Akibat Pengaruh Transpor Sedimen Sepanjang Pantai. Diploma thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Muara Sungai Grindulu yang terletak di kota Pacitan Jawa Timur. Sungai Grindulu sepanjang ±63,73 km mengalir di wilayah Kabupaten Pacitan dan bermuara di perairan Teluk Pacitan dengan luas DAS mencapai ±733,50 km2. Sungai tersebut mempunyai potensi bahan galian mineral berupa pasir yang telah lama dimanfaatkan sebagai pemasok kebutuhan material untuk pembangunan prasarana fisik. Muara sungau grindulu yang terletak di wilayah Kabupaten Pacitan bagian selatan merupakan jalur lalu lintas tempat bermuaranya kapal-kapal nelayan tradisional yang cukup padat. Dimana di sekitar sungai terjadi proses sedimentasi yang cukup tinggi. Perairan pantai pacitan termasuk kategori perairan terbuka (open sea) dengan horizon pantai yang berhadpan langsung dengan Samudra Hindia, oleh karena itu energi gelombang menuju pantai sangat berpengaruh terhadap dinamika pantai di daerah tersebut. Analisa gelombang di laut dalam Digunakan Ho = 2,5 m dan To = 7,5 s karena pada range kelas 5,7 – 8,8 knot dengan nilai Uz = 7,3 m/s memiliki intensitas yang lebih dominan dari tiga range kelas lainnya pada kondisi maksimum. Dalam perhitungan diperoleh Kecepatan Gelombang C = 3,09 m/s dan Tinggi Gelombang H = 3,85 m. Berdasarkan perhitungan imbangan sedimen, volume sedimen yang harus diamankan agar tidak masuk kedalam muara sungai adalah sebagai berikut. Pada titik C sebesar = 150932.038 m3/tahun, dan pada titik D sebesar = -3322120.54 m3/tahun. Dan sedimen yang masih bertranspor dari Sungai Grindulu = 617.563,40 m3/tahun yang diharapkan dapat terkikis oleh debit aliran sungai dan masuk ke laut dalam. Upaya pengamanan Muara Sungai Grindulu Pacitan dengan merencakan sepasang Jetty Panjang yang terletak di kedua sisi muara sungai dengan Panjang untuk Jetty 1 (sebelah kiri muara) 512 m dan untuk jetty 2 (sebelah kanan muara) 347 m dengan tinggi Jetty 3,5 m.
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Grindulu RiverEstuary, located in the Pacitan city of East Java. Grindulu River along ± 63.73 km flows in the Pacitan Regency and empties into the waters of Pacitan Bay with a watershed area reaching ± 733.50 km2. The river has the potential for mineral excavation in the form of sand which has long been used as a supplier of material needs for the construction of physical infrastructure. Grindulu river estuary, located in the Pacitan district in the south, is a traffic lane where traditional fishing vessels are crowded. Where around the river sedimentation process occurs which is quite high. Pacitan coastal waters are categorized as open waters with a beach horizon that is in direct contact with the Indian Ocean, therefore wave energy towards the coast is very influential on the dynamics of the coast in the area. Wave analysis in the deep sea Used Ho = 2.5 m and To = 7.5 s because in the class range 5.7 - 8.8 knots with a value of Uz = 7.3 m / s has an intensity that is more dominant than the three class ranges other at maximum conditions. In the calculation, obtained Wave Speed C = 3.09 m / s and Wave Height H = 3.85 m. Based on the calculation of sediment balance, the volume of sediment that must be secured so that it does not enter the river mouth is as follows. At point C of = 150932.038 m3 / year, and at point D of = -3322120.54 m3 / year. And the sediment that is still transporting from the Grindulu River = 617,563.40 m3 / year which is expected to be eroded by the flow of the river and into the deep sea. The effort to safeguard the Grindulu Pacitan River Estuary by planning a pair of Jetty Panjang located on both sides of the river mouth with Length for Jetty 1 (left of the mouth) 512 m and for jetty 2 (right side of the mouth) 347 m with Jetty height of 3.5 m.
| Item Type: | Thesis (Diploma) |
|---|---|
| Additional Information: | RSIS 551.303 Sad p-1 2019 |
| Uncontrolled Keywords: | Sedimen, Deformasi Gelombang, Jetty, Sungai Grindulu. |
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering > TC147 Ocean wave power. T Technology > TC Hydraulic engineering. Ocean engineering > TC175.2 Sediment transport |
| Divisions: | Faculty of Vocational > Civil Infrastructure Engineering (D4) |
| Depositing User: | Muhammad Aria Sadhu |
| Date Deposited: | 03 Jan 2024 07:26 |
| Last Modified: | 03 Jan 2024 07:26 |
| URI: | http://repository.its.ac.id/id/eprint/74603 |
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