Efektivitas Krib Untuk Mengurangi Gerusan Di Tikungan Luar Sungai Bengawan Solo

James Zulfan, Yiniarti Eka Kumala

Abstract


Bengawan Solo River considered as a meander river. This condition has potentially triggered local scouring due to high flow velocity at the outer bend of the river. The scouring phenomenon occur in the segment of of Bengawan Solo river in junction with Kali Pepe river where the river bank has shifted ± 2 meter. This condition indicates that the erosion and scouring have occurred and need immediate scenarios because the river banks was eroded and the nearby residential areas wa threaten. To protect the critical river banks, groyne structure was implemented. This study aims to investigate the effectiveness of the placing of groyne structure along the outer river bend using 3 dimensional physical model test at the Hydraulics Laboratory. The obtained resutls will be verified by 2 dimensional numerical modeling. Based on the physical hydraulic model testing, groyne and riprap setup with optimum distance can be effective to reduce the energy and flow velocity of the river flow to secure the dikes and river embankments.


Keywords


Physical model test; groyne; meander river; numerical model; Bengawan Solo river

Full Text:

PDF

References


Badan Standarisasi Nasional. 2016. SNI 2400.1:2016. Tata Cara Perencanaan Krib di Sungai-Bagian 1 : Perencanaan umum. Jakarta: Badan Standarisasi Nasional.

Darwizal, dkk. 2006. Pengaruh Variasi Geometri Tikungan Terhadap Karakteristik Penyebaran Sedimen dan Pembentukan Lapisan Armouring di Dasar Saluran, Laporan Hasil Penelitian Fundamental, Dikti, Dep. Diknas.

Hakim, D A. dkk. 2015. Analisis Angkutan Sedimen Pada Sungai Bengawan Solo. e-Jurnal Matriks Teknik Sipil/Maret 2015/232.

Herrera-Granados, Oscar. 2018. Turbulence Flow Modeling of One-Sharp-Groyne Field. 207-218. 10.1007/978-3-319-70914-7_12.

Nguyen, Q.B et al. 2018. Flow Around Groynes Modelling In Different Numerical Schemes. EPIC Series in Engineering. Volume 3, 2018. The 13th International Conference on Hydroinformatics. Palermo, Italy.

Puslitbang SDA. 2017. Laporan Akhir Uji Model Hidraulik Pintu Air Demangan Provinsi Jawa Tengah. Kementerian Pekerjaan Umum dan Perumahan Rakyat. Bandung

Pemkot Surakarta. 2017. Sungai Bengawan Solo. 20Desember2017.http://nasional.republika.co.id/berita/nasional/daerah/17/12/16/p11p68284-ketinggian-air- bengawan-solo-di-bawah-siaga-banjir

Sidharta. dkk. 1997. Irigasi dan Bangunan Air, Universitas Gunadharma. Jakarta.

Suharjoko., Sulistiono, D., Subekti, S., Sumirman, E. 2018. The relationship of groyne placement at the river bend with the sedimentation accumulations. ARPN Journal of Engineering and Applied Sciences. 13. 1173-1180.

Teraguchi, H., Nakagawa, H., Muto, Y., Baba, Y., and Zhang, H. 2008. Effects of groins on the flow and bed deformation in non-submerged conditions. Annuals of Disaster Prevention Research Institute of Kyoto University, 51B, 625-631.

Uijttewaal, W. S. J. 2005. Effects of groyne layout on the flow in groyne fields: Laboratory experiments. Journal of Hydraulic Engineering, 131(9),782-791.

Zaid, Bahaeldeen. 2017. Development of Design Guidelines for Shallow Groynes. DOI 10.24355/dbbs.084-201804100941.

Zaid, Bahaeldeen & Nardone, Paride & Nones, Michael & Gerstgraser,

Christoph & Koll, Katinka. 2018. Morphodynamic effects of stone and wooden groynes in a restored river reach. E3S Web of Conferences. 40. 10.1051/e3sconf/20184002038.

Zilliwu, Yuliman. 2010. Peranan Konstruksi Pelindung Tebing dan Dasar Sungai pada Perbaikan Alur Sungai, Jurnal Teknik Sipil dan Arsitektur, Vol.7, No.11, ISSN 0852-2561. UTP Surakarta.

Zikri, A. 2016. Model Laboratorium Pola Aliran pada Krib Permeable Dengan Variasi Debit dan Jarak Antar Krib di Sungai Berbelok. Unri, pekanbaru.

Zulfan, James. 2013. Pemodelan Numerik Pengamanan Sungai Saddang Dengan Pemasangan Krib. Jurnal Teknik Hidraulik, Volume 4, No 1, Juni 2013 Bandung.

Zulfan, James. 2015. Efektifitas Hidraulik Penambahan Pintu Air Melalui Uji Model Fisik 3D dan Numerik 1D (Studi Kasus: Manggarai Sluice Gate). Jurnal Teknik Hidraulik Volume 6, No.1, ISSN 2087-3611. Bandung




DOI: https://doi.org/10.32679/jth.v9i2.582

Refbacks

  • There are currently no refbacks.


Copyright (c) 2019 JURNAL TEKNIK HIDRAULIK

Indexed by:
   Sinta Science and Technology IndexCrossref logo 
 
       
 
 
 
Sekretariat:
 
Pusat Litbang Sumber Daya Air, Badan Penelitian dan Pengembangan, Kementerian Pekerjaan Umum dan Perumahan Rakyat