Jokowinarno, Dwi and Nurfajri, Nurfajri and Kurniawan, Eka and Alekander, Rengki (2014) MEMANEN AIR HUJAN SEBAGAI UPAYA MANAJEMEN HIDROGRAF SATUAN PADA DAERAH ALIRAN SUNGAI WAY AWI. In: Seminar Nasional Inacid, 16-17 Mei 2014, Palembang.
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Abstract
The floods is a common problem that occurs in part of Indonesia, especially in densely populated areas, such as in urban areas. Solving the problem of flooding is still forecasting and qualitative, due to the lack of measurable data such as rainfall data, flow data and basin data at the time of the flood. The object of research is on the Way Awi river in the Central Way Kuala Garuntang Basin. The methods to be used in this research that uses Measured Unit Hydrograph (HST) and Syntetic Unit Hydrograph (HSS) and compare the two methods for the analysis of the optimum mitigation to cope with the flooding on the Way Awi river. From the research shows that HST Way Awi river has peak discharge (Qp) of 1.782 m3/dt. HSS that come close to measured data is HSS Nakayasu with flow of characteristic coeffisien 0.84, Syntetic Unit Hydrograph Snyder and Gama I are not suitable to be used as an artificial approach, it is possible caused by the characteristic coefficien and the basin condition that is used is not suitable for the basin. Mitigation is used is to use rainwater harvesting through the usse of the roof where the rain that fell on the roof of the house will be collected and placed into tank or reservoir. Assumption that the intensity of the highest rainfall of 21.4 mm/10menutes and the average rainfall intensity of 6.2 mm/10minutes. Bin tank dimension use tank with a capacity of 1 m3 or 1000 liters with a diameter of 0.99 m and height 1.8 m. Retention time of each house for the height rainfall on the roof area of 55 m2 is 9.37 minutes with a percentage 93.68%, 99 m2 of roof area that is 5.25 minutes with a percentage of 52.53% and 111 m2 of roof area that is 4.68 minutes with a percentage of 46.84%. As for the intensity of rainfall on average retention time of each house on the roof area of 55 m2 which is 32.33 minutes with a percentage of 323.34%, 99 m2 of roof area is 18.13 minutes with a percentage 181.30% and 111 m2 of roof area is 16.17 minutes with a percentage of 161.67%.
| Item Type: | Conference or Workshop Item (Paper) |
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| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Depositing User: | DWI JOKOWI |
| Date Deposited: | 16 Feb 2021 03:56 |
| Last Modified: | 16 Feb 2021 03:56 |
| URI: | http://repository.lppm.unila.ac.id/id/eprint/27890 |
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