Kajian Angkutan Sedimen Di Sungai Pabelan, Kabupaten Magelang, Jawa Tengah

Risky Fauziyah; Bambang Agus Kironoto; Djoko Legono

doi:10.18196/st.211210

Kajian Angkutan Sedimen Di Sungai Pabelan, Kabupaten Magelang, Jawa Tengah

Risky Fauziyah, Bambang Agus Kironoto, Djoko Legono

Abstract

Pabelan River is one of the rivers in the western slopes of mount Merapi located in Magelang Regency, Central Java province. Pabelan River has watersheds ± 84,70 km²with the main river length ± 28,40 km². The purpose of this research was to estimate the amount of sediment transport that occurred at the point of view in the Pabelan River and to know estimate of sediment balance that occurred at the point of view in the Pabelan River. This research was conducted to find out the sediment balance in the Pabelan River whether going on degradation, aggradation, or experience the equilibrium transport. Calculation of sediment balances based on the volume of sediment transport entering at the location selected. Based on the results of sediment transport analysis using MPM, EINSTEIN, DU BOYS and ROTTNER formula, the largest sediment transport volume occurred in PA-C 5 = 4850,592 m³/m/flood, 305,8398 m³/m/flood, 20321,979 m³/m/flood and 80274,221 m³/m/flood, while the result of calculation based on formula FRIJLINK largest sediment transport volume occurred at PA-C 3 = 3654,817 m³/m/flood. To obtain the result of equilibrium sediment that occurred in the river of research is by using the five formula with the condition of the river that occurred aggradation and degradation with the biggest condition is the result of calculation with the formula ROTTNER for aggradation occurs in PA-C X Prumpung amount of 47272,806 m³/m/s with increase river bed amount of 13,504 m and degradation occurred at PA-C 5 -47468,692 m³/m/s with decrease at river bed -23,698 m.

Keywords

Sediment transport, sediment balance, and volume of sediment

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DOI: https://doi.org/10.18196/st.211210