Transport Sediment Analysis Using Bed-load: Case Study Bilibili Reservoir

Lukman, Melly; Tanan, Benyamin; Saing, Zubair

doi:10.13189/cea.2020.080408

Cited by 6 publications

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“…Intensitas curah hujan adalah ketinggian curah hujan yang terjadi pada kurun waktu dimana air tersebut terkonsentrasi. Intensitas curah hujan dinotasikan dengan huruf I dengan satuan mm/jam [3]. Perlunya menghitung curah hujan rata-rata wilayah adalah untuk penyusunan suatu rancangan pemanfaatan air dan rancangan pengendalian banjir.…”

Section: Pendahuluanunclassified

“…Hidrograf satuan sintetik ini dikembangkan oleh Sri Harto yang diturunkan berdasarkan teori hidrograf satuan sintetik yang dikemukakan oleh Sherman. Hidrograf satuan sintetik Gama-I merupakan persamaan empiris yang diturunkan dengan mendasarkan pada parameter-parameter DAS terhadap bentuk dan besaran hidrograf satuan parameter-parameter DAS tersebut yaitu faktor sumber (SF), frekuensi sumber (SN), factor lebar (WF), luas relatif (RUA), faktor simetris (SIM) dan jumlah pertemuan sungai [3]. Penelitian yang pernah dilakukan oleh Hinari (2014) Analisis Debit Banjir Rancangan untuk Perancanaan Bendung Randangan.…”

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Analisis Debit Banjir Untuk Perencanaan Bendung Malunda Kabupaten Majene

Sanda

Tanan

Tanje

2022

pcej

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This study aims to analyze the flood discharge of the Malunda Weir design. This research can be used as a reference for similar research. Due to the earthquake in Palu, the dam cracked in several parts, then collapsed due to flooding. Planning for flood control, river security, and other water structures can be carried out properly if the planned flood discharge in the river is known. Regional average rainfall is calculated by the Algebraic Average method. Then analyzed by calculating the design rainfall using the Gumbel method, Log Pearson Type III and Log Normal. Then determine the flood discharge using the HSS Nakayasu and HSS Gama I methods with return periods of 25, 50, and 100 years. Based on the calculation results of the Nakayasu HSS method, the flood discharge for a period of 25 years = 791.570 m3/second; 50 years = 903.575 m3/second ; and 100 years = 1014, 533 m3/sec. In the HSS Gama I method, the flood discharge for a period of 25 years = 860,794 m3/second; 50 years = 1005.687 m3/second ; and 100 years = 1149, 507 m3/sec. From the calculation of the 2 HSS methods, it can be concluded that the closest Synthetic Unit Hydrograph is the Synthetic Unit Hydrograph. From the calculation of the 2 HSS methods, it can be concluded that the closest Synthetic Unit Hydrograph is the Synthetic Unit Hydrograph.

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Section: Pendahuluanunclassified

Analisis Debit Banjir Untuk Perencanaan Bendung Malunda Kabupaten Majene

Sanda

Tanan

Tanje

2022

pcej

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“…Bili-Bili Reservoir is a multi-purpose reservoir and the largest in South Sulawesi, located in Gowa Regency, South Sulawesi, Indonesia. One of the reservoir purposes is to provide clean water to Makassar City, Gowa, Takalar, and Maros Regency (Lukman et al 2020a(Lukman et al , 2020b. In 2004, a landslide occurred in the Bawakaraeng Mountain, carrying around 200 million m 3 of landslide material, resulting in an increase of turbidity in the reservoir ranging from 29,000 to 52,000 Nephelometric Turbidity Unit (NTU) and exceeding the permissible threshold (6,000 NTU) (Yusuf et al 2012).…”

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confidence: 99%

Physical modeling of sand columns application in recharge reservoir to prevent seawater intrusion

et al. 2021

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This study aims to provide visual evidence by the physical simulation to demonstrate the sand column performance of a recharge reservoir to control seawater encroachment and confirm some previous studies. In this analysis, a two-dimensional sand tank illustrates the sand column's role in overcoming seawater intrusion. Besides using dyes, the sand tank is also fitted with sensors to observe the length of seawater penetration. Furthermore, the simulation using SEAWAT numerical modeling is used as a reference in this analysis. The criteria analyzed were the number of sand columns, the reservoir water level, and the isochlors concentration. The results revealed a reasonably close match between physical and computational modeling. It was also found that the more sand columns and the higher the reservoir water level, resulted in the decrease of seawater penetration length that occurred. Physical and computational modeling findings indicated that the optimal results are derived using three sand columns with an RMSE value of 0.76. The seawater infiltration length decreased to 84.72% relative to sand column-free conditions at a reservoir water level of 15.0 cm.

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“…Furthermore, the peak discharge was obtained at 1125.14 m/second which occurred on December 21, 2017. And finally, the peak discharge was obtained at 645.56 m³/second which occurred on February 15, 2018[6],[7].Based on the inflow discharge data of the Bili-bili Reservoir in 2014 -2018, using the Mononobe Method, with an effective rain duration of 4 hours for t=1, the rainfall resulted in a peak discharge that occurred on that date of 30.439 mm/day. in the Bilibili Reservoir in 2015, the rainfall which resulted in the peak discharge on the above date was 80.1 mm/day.…”

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confidence: 99%

“…It was found that the rainfall that produced the peak discharge on that date was 56.4 mm/day. More details as in the following table[5]-[7].…”

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Inflow Analysis into Bili-Bili Reservoir

Lukman

Tanan

Resta

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Bili-bili Reservoir was built with the main objective of controlling flooding in Makassar City. With a flood control capacity of 41 million m3 with an initial capacity of 347.82 million cubic to 239.76 million cubic due to increased sediment in the reservoir so that if there is high rainfall it has the potential to cause flooding. The research entitled “Inflow Analysis to Bili-Bili Reservoir”, has a problem formulation of how the relationship between rainfall and inflow (discharge) entering the reservoir and how the comparison between inflow based on rainfall data and AWLR (Automatic Water Level Recorder). The purpose of this study was to analyze the relationship between rainfall and inflow discharge into the reservoir and to compare the inflow discharge based on the results of rainfall analysis with the inflow based on AWLR. This study uses secondary data from the Pompengan Jeneberang River Basin Center (BBWS). The regional average rainfall analysis used the Thiessen method, while the Synthetic Unit Hydrograph (HSS) Gama I method was used for flood discharge analysis. For flood discharge analysis, the maximum annual rainfall was selected according to the maximum inflow recorded at the Bilibili Dam AWLR. From the calculation of the HSS Gama 1 parameter, the rise time is 2.72 hours and the peak ordinate is 10.290 m3/second. When compared with the inflow (discharge) data on the Bili-Bili AWLR, the results of the calculation of the discharge with HSS Gama I are smaller in value with a difference of 20.50% to 31.46%.

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Transport Sediment Analysis Using Bed-load: Case Study Bilibili Reservoir

Cited by 6 publications

References 0 publications

Analisis Debit Banjir Untuk Perencanaan Bendung Malunda Kabupaten Majene

Analisis Debit Banjir Untuk Perencanaan Bendung Malunda Kabupaten Majene

Physical modeling of sand columns application in recharge reservoir to prevent seawater intrusion

Inflow Analysis into Bili-Bili Reservoir

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