Studi Pengaruh Perubahan Kedalaman Saluran terhadap Pengelolaan Sedimen di Saluran Box Culvert

Authors

  • Angela Jasmine Tanya Tjahyana Universitas Kristen Petra Surabaya
  • Umboro Lasminto Institut Teknologi Sepuluh November

DOI:

https://doi.org/10.24002/jts.v15i4.3802

Keywords:

box culvert, kecepatan aliran, sedimentasi

Abstract

The most frequent problem that occurred in a box culvert is sedimentation. Sediments can be transported by changes in the water flow velocity, which can be influenced by changes of depth, h, of the channel bed. This research studies the change in h1 to h2 = 1,1 h1, 1,3 h1, 1,5 h1, 1,8 h1, and 2 h1, by simulation using SSIIM 1 program. The graph of the grain size distribution shows that the sediment consists of 99% of sands and 1% of silt, which its diameter of d50 = 0.8 mm and d90 = 4 mm. The discharge is 0.328 m3/s. The results, the deeper of the bed channel changes, the slower the flow velocity. The bed shear stress in changing the bed channel is smaller than the critical bed shear stress, and it makes the sediment stays. Based on the results, the variation of h2 = 1,1 h1, is preferred in sediment management.

References

Anggrahini. (1997). Hidrolika Saluran Terbuka, Citra Media, Surabaya.

Berg, J. van den and Vries, M.de. (1994). Principles of River Engineering, The non-tidal alluvial river, Eds. P Ph Jansen, L van Bendegom, J can den Berg, M de Vries, A Zanen, Netherlands.

Graf, Walter H. and Altinakar, M.S. (1998). Fluvial Hydraulics Flow and Transport Processes in Channels of Simple Geometry, John Wiley & Sons, New York.

Olsen, Nils Reidar B. (1999). Computational Fluid Dynamics in Hydraulics and Sedimentation Engineering, Department of Hydraulic and Environmental Engineering The Norwegian University of Science and Technology, Norwegian.

Olsen, Nils Reidar B. (2012). A Three-Dimensional Numerical Model for Simulation of Sediment Movement in Water Intakes with Multiblock Option, Department of Hydraulic and Environmental Engineering The Norwegian University of Science and Technology, Trondheim.

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Published

2020-11-05

Issue

Section

Vol. 15, No. 4 April 2020