Inabah, Redha Fatki (2017) Perencanaan Check Dam Sebagai Pengendali Sedimen Pada Sungai Yeh Mas Desa Tukad Sumaga Kecamatan Gerokgak Kabupaten Buleleng Bali. Sarjana thesis, Universitas Brawijaya.
Abstract
Sub-DAS Yeh Mas 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 Yeh Mas merupakan anak sungai dari sungai Tukad Tinga-Tinga, sungai ini tergolong sungai intermitten. Sungai Yeh Mas mempunyai luas DAS 5,79 km2˛dengan panjang sungai utama ±6,095 km, lebar sungai rata-rata 13,046 m dan kemiringan dasar sungai 0,0175. Kondisi pada Sungai Yeh Mas yang sering banjir cukup mengganggu sarana dan prasarana di sekitar sungai, terlebih air langsung meluber ke jalan raya ketika banjir pada station 7 dan station 8. Untuk itu perlu dilakukan normalisasi sungai sedemikian rupa yang diharapkan mampu menampung volume air yang melintas saat kondisi debit banjir, yang mana dalam perencanaannya diharapkan mampu menampung debit banjir Q25th. Perhitungan hidrologi menggunakan metode Hidrograf Satuan Sintetis Nakayasu dengan besar debit Q25th 27,270 m3/dt yang akan digunakan untuk analisa banjir rancangan sedangkan Q100th 34,236 m3/dt yang akan digunakkan untuk desain check dam, analisa Transport Sediment menggunakan Metode Einstein didapatkan jumlah sedimen yang melintas sebesar 17602,223 m3/tahun sedangkan untuk analisa banjir akan di running dengan menggunakan software HECRAS 4.1. Diharapkan dengan adanya check dam ini masalah sedimentasi pada Sungai Yeh Mas dapat terkendali. Berdasarkan perhitungan yang telah dilakukan maka direncanakan 2 buah check dam tipe tertutup dengan lebar pelimpah pada check dam 1 yaitu 25 m, tinggi main dam 3 m, kedalaman pondasi main dam 2 m, tebal mercu main dam 2,5 m, tebal mercu sub dam 2,5 m dan lebar pelimpah pada check dam 2 yaitu 20 m, tinggi main dam 3 m, kedalaman pondasi main dam 2 m, tebal mercu main dam 2,5 m, tebal mercu sub dam 2,5 m.
English Abstract
Yeh Mas Sub-DAS is part of Tukad Tinga-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. Yeh Mas River is tributary of Tukad Tinga-Tinga River, this river is classified of intermitten river. The DAS large of Yeh Mas river is 5,79 km2, length of main river is +-6,096 km, average width is 13,046 m and the basic slope of river is 0,0175. Condition of Yeh Mas River is flooding frequently which quite disturb facilities and infrastructures around the river, the water spill onto the highway on station 7 and station 8. So that, it needs to do river normalization which is expected to be able to collect water volume that passes when flood discharge condition, which is in its planning was expected to be able to collect flood discharge Q25th. Calculation hydrology use of Synthetic Hidrograf Unit Nakayasu with large discharge Q25th 27,270 m3/sec to be used for analysis flood design, Q100th 34,236 m3/sec will use to design check dam, analysis of transport sediment use Einstein Method Obtained the number of the sediment that is passing as much as 17602,223 m3/year and analysis for flood will be running using HECRAS 4.1. software. It is expected that the check dam could be controlled the problem of sedimentation on Yeh Mas River. Based on the calculation of that has been done the check dam planned 2 pieces with covered with wide spillway in check dam 1 is 25 m, the height of main dam is 3 m, the depth of main dam foundation is 2 m, the thickness of main dam light is 2,5 m, the thickness of sub dam light is 2,5 m and wide spillway in check dam 2 is 20 m, the height of main dam is 3 m, the depth of main dam foundation is 2 m, the thickness of main dam light is 2,5 m, the thickness of sub dam light is 2,5m
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FT/2017/859/051708702 |
| Uncontrolled Keywords: | Check dam, Sungai Yeh Mas, Banjir, Sedimen. |
| Subjects: | 600 Technology (Applied sciences) > 627 Hydraulic engineering > 627.8 Dams and reservoirs > 627.86 Reservoirs |
| Divisions: | Fakultas Teknik > Teknik Pengairan |
| Depositing User: | Budi Wahyono Wahyono |
| Date Deposited: | 22 Sep 2017 07:43 |
| Last Modified: | 21 Nov 2024 07:07 |
| URI: | http://repository.ub.ac.id/id/eprint/2860 |
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