Tungga, Anand Wijaya (2018) Perencanaan Groundsill Pada Sungai Tinga-Tinga Desa Tukad Tinga-Tinga Kecamatan Gerokgak Kabupaten Buleleng Bali. Sarjana thesis, Universitas Brawijaya.
Abstract
Sub-DAS Tinga-Tinga merupakan bagian dari DAS Tukad Tinga-Tinga yang terletak di Kecamatan Gerokgak, tepatnya diantara 8° 11' 36" - 8° 15' 42" LS dan 114° 48'38" - 114° 52' 11" BT. Sungai ini tergolong sungai intermitten. Sungai Tinga-Tinga mempunyai luas Sub-DAS 5,7 km2˛dengan panjang sungai ±5,93 km, lebar sungai rata-rata 18,056 m dan kemiringan dasar sungai 0,028. Kondisi pada pondasi jembatan Sungai Tinga-Tinga yang cukup tergerus dapat mengganggu sarana dan prasarana di sekitar sungai. Untuk itu perlu dilakukan perencanaan bangunan groundsill di hilir jembatan sedemikian rupa yang diharapkan mampu mengurangi terjadinya gerusan di sekitar pondasi Jembatan Sungai Tinga-Tinga. Perhitungan hidrologi menggunakan metode Hidrograf Satuan Sintetis Nakayasu dengan Q25th 23,97 m3/dt yang akan digunakkan untuk perencanaan desain groundsill, analisa Transport Sediment menggunakan Metode Einstein didapatkan jumlah sedimen yang melintas sebesar 23399,71 m3/tahun sedangkan untuk analisa banjir akan di running dengan menggunakan software HECRAS 5.0.3. Diharapkan dengan adanya groundsill ini masalah sedimentasi pada Sungai Tinga-Tinga dapat terkendali. Berdasarkan perhitungan yang telah dilakukan maka direncanakan bangunan groundsill dengan lebar pelimpah pada groundsill yaitu 14 m, tinggi main dam 1,5 m, kedalaman pondasi main dam 1,5 m, tebal mercu main dam 1,5 m, tebal mercu sub dam 1 m.
English Abstract
Tinga-Tinga Sub-DAS is part of TukadTinga-Tinga DAS which is located at Gerokgak Sub-District, between 8° 11' 36" - 8° 15' 42" S and 114° 48'38" - 114° 52' 11" E. This river is classified of intermitten river. The DAS large of Tinga-Tinga river is 5,7 km2, length of the river is +-5,93 km, average width is 18,056 m and the basic slope of river is 0,028. Condition of Tinga-Tinga River bridge footing is scoured by the water activity which quite disturb facilities and infrastructures around the river. So that, it needs to do groundsill planning which is expected to be able to decrease the scouring at the Tinga-Tinga River bridge footing area. Calculation hydrology is used Synthetic Hidrograf Unit Nakayasu with Q25th 23,97 m3/sec will use to design groundsill, analysis of transport sediment use Einstein Method Obtained the number of the sediment that is passing as much as 23399,71 m3/year and analysis for flood will be running using HECRAS 5.0.3 software. It is expected that the groundsill could be controlled the problem of sedimentation on Tinga-Tinga River. Based on the calculation of that has been done the groundsill planned covered with wide spillway in groundsill is 14 m, the height of main dam is 1,5m, the depth of main dam foundation is 1,5 m, the thickness of main dam light is 1,5 m, the thickness of sub dam light is 1 m.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FT/2018/946/051809806 |
| Uncontrolled Keywords: | Groundsill, Sungai Tinga-Tinga, Banjir, Hec-Ras Groundsill, Tinga-Tinga River, Flood, Hec-Ras |
| Subjects: | 500 Natural sciences and mathematics > 551 Geology, hydrology, meteorology > 551.4 Geomorphology and hydrosphere > 551.48 Hydrology > 551.483 Rivers and streams |
| Divisions: | Fakultas Teknik > Teknik Pengairan |
| Depositing User: | Budi Wahyono Wahyono |
| Date Deposited: | 30 Oct 2018 03:04 |
| Last Modified: | 30 Oct 2018 03:04 |
| URI: | http://repository.ub.ac.id/id/eprint/12965 |
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