The Effect Of Lamong River Flow Diversion To Bed Surface Degradation

Cahyono Ikhsan


Abstract Kali Lamong River with a trapezoidal channel shape has a bottom width of about 30 m, a top width of 40 m and a depth of 3.5 m. In one of the river segments, the basis is in the form of a fixed bed and it is assumed that there is no sediment transport in this section. On the downstream side after the fixed bed section, the river segment is a mobile bed with river bed material that has an average grain diameter of 1.5 mm, a relative mass density of 2.6, and porosity of 0.3. Flowrate with Q50 is 1000.00 m3/sec with a maximum flow speed of 15 m/sec. Riverbed degradation will occur initially at the upstream point in the fixed and mobile beds. Depth of riverbed degradation calculated by the Parabolic model of 80.00 cm / year based on the solution of the equation.


degradation; parabolic model; river flow diversion

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B. Triadmodjo, Hidraulika II, Yogyakarta: Betta Ofset, 2009.

S. Murniningsih, "Pengaruh Pergerakan Meander Terhadap," Indonesian Journal of Construction Engineering and Sustainable Development (Cesd), vol. 1, no. 2, pp. 45-52, 2018.

B. Barid and M. Yacob, "Perubahan Kecepatan Aliran Sungai," Jurnal Ilmiah Semesta Teknika, vol. 10, no. 1, pp. 14-20, 2007.

Hydrologic Engineering Center, HEC-RAS River Analysis System (Application Guide), Davis: US Army Corps of Engineering, 2010.

E. Setiawan, C. Ikhsan and R. R. Hadiani, "Caused shift voltage degradation and agradation on," in IOP Conf. Series: Earth and Environmental Science, Jember, 2019.

I. Suhardjo, "Degradasi Dasar Sungai," Journal Teodolita (Jurnal Fakultas Teknik), vol. 9, 2008.

Graf and Altinakar, Fluvial Hydraulics, Sussex: Wiley and Sons, 1998.

S. Fauziyah, C. Ihsan and S. Sobriyah, "Degradation and Aggradation Parabolic Model of Dengkeng Riverbed," in The Third International Conference on Civil Engineering Research (ICCER), Surabaya, 2017.



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