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Jurnal Teknik Pengairan
Article . 2017
Data sources: DOAJ
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KONSENTRASI SEDIMEN SUSPENSI RATA-RATA KEDALAMAN PADA SALURAN MENIKUNG

Authors: chairul muharis;

KONSENTRASI SEDIMEN SUSPENSI RATA-RATA KEDALAMAN PADA SALURAN MENIKUNG

Abstract

Akibat adanya gaya sentrifugal di tikungan saluran maka kecepatan aliran arah transversal akan meningkat di outer bank. Fenomena ini tentu akan mempengaruhi distribusi konsentrasi sedimen suspensi rata-rata kedalaman. Perubahan distribusi konsentrasi sedimen suspensi.hanya akan dapat diketahui dengan melakukan penelitian secara langsung pada alran menikung di lapangan atau di laboratorium.Tujuan penelitian ini adalah untuk mengetahui profil distribusi konsentrasi sedmen suspensi dari pengukuran di lapangan, kemudian dibandingkan dengan profil distribusi konsentrasi sedmen suspensi prediksi berdasarkan persamaan Rouse. Penelitian dilakukan di Saluran Irigasi Mataram Yogyakarta. Saluran yang diteliti berpenampang segi empat dengan kedalaman rata-rata 1.50 meter dan lebar 4.22 meter serta sudut tikungan 57 Derajat. Terbuat dari pasangan batu, sedangkan dasar saluran terdiri dari tanah, pasir dan batuan. Pengukuran konsentrasi sedimen suspensi menggunakan Opcon Probe. Prediksi konsentrasi sedimen suspensi menggunakan persamaan Rouse. Hasil penelitian menunjukkan bahwa akibat perubahan kecepatan aliran di tikungan maka konsentrasi sedimen suspensi rata-rata kedalaman juga mengalami perubahan. Secara umum konsentrasi sedimen suspensi rata-rata tampang ke arah sisi luar tikungan mengalami pengurangan dan sebaliknya ke arah sisi dalam tikungan semakin meningkat. Konsentrasi sedimen suspensi rata-rata tampang dapat diwakili berdasarkan pengambilan sampelnya pada jarak z =0,46 B atau 0,46 lebar saluran diukur dari inner bank. Persamaan Rouse masih dapat digunakan untuk memprediksi distribusi konsentrasi sedimen suspensi dengan baik. Kecepatan yang rendah di sisi dalam saluran menyebabkan butiran sedimen yang lebih besar mengendap dan berpotensi terjadi pendangkalan.

Keywords

konsentrasi, sedimen suspensi, Hydraulic engineering, TC1-978, arah transversal

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold