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ITS » Master Theses » Manajemen & Rekayasa Sumber Air S2
Posted by anis at 24/12/2006 14:11:10  •  15715 Views


MODEL MATEMATIKA SATU DIMENSI PADA SALURAN PENGENDAP PASIR (SAND TRAP)

ONE DIMENSIONAL MATHEMATICS MODEL OF SANDTRAP

Created by :
SUPRAYOGI, IMAM 



SubjectModel matematika
KeywordModel matematika
saluran pengendap pasir
sedimen
efisiensi
mathematics model
sandtrap
sediment
efficiency
dredging

Description:

Saluran pengendap pasir (sand trap) banyak dijumpai di bangunan pengambilan air dari sungai untuk kepentingan irigasi. Saluran ini dibuat dengan maksud untuk mengendapkan pasir agar tidak masuk ke saluran irigasi diharapkan air yang masuk ke saluran irigasi relatip bersih (dengan konsentrasi kecil). Tujuan dari penelitian adalah menerapkan metode beda hingga (finite different method) untuk menyelesaikan persamaan differensial aliran air sebagai dasar pembuatan program komputer (soft ware) berbahasa Borland Delphi 5 pada saluran pengendap pasir (sand trap), menguji kemampuan model terhadap hasil penrjukuran di lapangan serta menerapkan nilai efisiensi dan simulasi sedimen pad i saluran pengendap pasir (sand trap). Analisa yang dilakukan terdiri dari data debit, kecepatan aliran, kedalaman air dan data hasil pengukuran dv lapangan sebagai dasar perhitungan angkutan sedimen total dengan pendekatan formula Engelund Hansen, Leo Van Rijn, dan Enstein Brown. Nilai ini sebagai data masukan formulasi empiris model satu dimensi (1 - D) pada saluran pengendap pasir (sand trap) yang dikembangkan Eysink Vermaas (1983). Hasil pengujian model mempergunakan steady state test pada Saluran Tersier Prambon, Sidoarjo, didapat hubungan antara debit pengukuran di lapangan dengan debit model merupakan fungsi transformasi logaritma. Untuk diameter butiran rata-rata 0,00018 m, panjang efektif saluran pengendap pasir (sand trap) 10 m didapat nilai efisiensi (%) pada akhir saluran pengendap pasir (sand trap), angkutan sedimen yang mengendap 99,999998 % serta yang masuk ke saluran irigasi (melayang) 0,000002 %, perkiraan waktu pengerukan 62.000 hari.


Alt. Description

Sandtrap channels are usually found at the rivers intake for irrigation purposes. These channel were made to settle sands and prevent them from entering the irrigation channel. As a result, the water that enter the irrigation channel will be relatively clean (with small concentration). The objectives of this research are applying finite different method to solve waterflow differential equation as the basis for computer's software construction using Borland Delphi 5 language for sandtraps, testing model's ability against field measurement result, also applying efficiency point and sediment simulation of sandtraps. This analysis consist of discharge data, flow velocity, water depth, and field measurement result data as the basis for total load calculation using Engelund Hansen, Leo Van Rijn, and Enstein Brown formulation approach. The result is using as an input data for sandtrap's one dimensional empirical model formulation, which was developed by Eysink and Vermaas (1983 ). Form the test result using steady state test at Tertiary Channel in Prambon, Sidoarjo, we conclude that relation between field measurement and model's discharge was logarithm transformation function. For mean grain diameter 0,00018 m, and sandtrap's effective length 10 m we could know the efficiency value (%) at the end of sandtraps, sediment load 99,999998%, the sediment that enter the irrigation channel 0,000002%, and also dredging time estimation 62.000 days.

Contributor:
  1. Ir. Anggrahini, MSc.
    Dr. Ir. Piter LF Bentura, CES., DEA.
    Ir. Wasis Wardoyo Dipl HE, MSc.
Date Create:24/12/2006
Type:Text
Format:pdf ; 65 pages
Language:Indonesian
Identifier:ITS-Master-3100003018397
Collection ID:3100002016877
Call Number:511.8 Sup m


Source :
Theses Civil Engineering RT 511.8 Sup m, 2002

Coverage :
ITS Community

Rights :
Copyright @2002 by ITS Library. This publication is protected by copyright and permission should be obtained from the ITS Library prior to any prohibited reproduction, storage in a retrievel system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to ITS Library


Publication URL :
http://digilib.its.ac.id/model-matematika-satu-dimensi-pada-saluran-pengendap-pasir-sand-trap-231.html




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Model , Model matematika , dredging , efficiency , efisiensi , matematika , mathematics , mathematics model , model , pasir , pengendap , saluran , saluran pengendap pasir , sandtrap , sedimen , sediment



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