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Simulasi Kenaikan Tekanan Air Pori Akibat Beban Timbunan Saat Fase Konstruksi Pembangunan Tanggul

Simulation of the rise in pore water pressure due to embankment load during the construction phase of the levee

*Togani Cahyadi Upomo orcid scopus  -  Universitas Negeri Semarang, Indonesia
Dian Eka Aryanti  -  Politeknik Energi dan Pertambangan (PEP), Indonesia
Rini Kusumawardani  -  Universitas Negeri Semarang, Indonesia

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Abstract
Inflow in Jatiluhur Reservoir located on the Citarum River is influenced by outflow from Cirata Reservoir and Saguling Reservoir which are above it. These three reservoirs are incorporated in the Citarum Cascade System Reservoir. This inflow analysis is related to the availability of water in the Jatiluhur Reservoir, which is a multi-purpose reservoir, which then becomes the mainstay of the water supply as a hydropower operation pattern. Runoff rain modeling using HEC-HMS software using data on rainfall, temperature, land cover, soil type and topography. Parameters generated from observation and modeling are coefficient of determination (R2), Nash-Stuclift (NSE), and Percent Bias (PBIAS). The results of the case study show that the parameters of the observed local inflow (R2: 0.693; NSE: 0.525; PBIAS: 9.88%) with data sources from the Jatiluhur Reservoir manager are better than the local inflow analysis results (R2: 0.533; NSE: - 0.457; PBIAS: 48.88%) with data sources from water level (TMA). Meanwhile, the total inflow of observations (R2: 0.982; NSE: 0.973; PBIAS: 1.14%) with data sources from the Jatiluhur Reservoir manager is better than the total inflow analysis results (R2: 0.932; NSE: 0.889; PBIAS: 9.43 %) with the data source from the water level (TMA).
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Keywords: Excess pore pressure; metode B-bar; slope stability analysis

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Last update: 2024-06-13 12:48:29

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