Physical flood modelling evaluation of river meandering channel in tidal effected reach

Physical flood modelling evaluation of river meandering channel in tidal effected reach

Flood is one of the disasters in this country where around 29,000 km² or 9% of the country was exposed to it. Understanding the flood phenomena along the river and flood plain would be able to help in the assessment of the impact of human activity in the river basin. Modelling of river and flood pl...

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Main Author: Mohamad, Mohd. Fauzi
Format: Thesis
Language:English
Published: 2008
Subjects:
TC Hydraulic engineering
Ocean engineering
Online Access:http://eprints.utm.my/id/eprint/9570/1/MohdFauziMohamadMFKA2008.pdf
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id my-utm-ep.9570
record_format uketd_dc
institution Universiti Teknologi Malaysia
collection UTM Institutional Repository
language English
topic TC Hydraulic engineering
Ocean engineering
TC Hydraulic engineering
Ocean engineering
spellingShingle TC Hydraulic engineering
Ocean engineering
TC Hydraulic engineering
Ocean engineering
Mohamad, Mohd. Fauzi
Physical flood modelling evaluation of river meandering channel in tidal effected reach
description Flood is one of the disasters in this country where around 29,000 km² or 9% of the country was exposed to it. Understanding the flood phenomena along the river and flood plain would be able to help in the assessment of the impact of human activity in the river basin. Modelling of river and flood plain will form as a basis for this understanding. The objectives of this study are to develop a physical model of river meandering channel in tidal effected reach and to assess the flood plain and water level for various flow under existing conditions and flood mitigation measures using cut off system. Scope of this study includes the developement of physical model and the assessment of flood plain and water level. It includes gathering the available data and construction of physical model for parts of Selangor River at NAHRIM laboratory. The model was tested for different flows with various conditions. In the first part, the test was carried out at low water, mean sea and high water for existing alignment. In the second part of the study, cut off was intruduce at one stretch of the channel section and similar test cases were carried out. Readings for velocity and water levels were taken at eight stations along the river channel and another eight locations in the flood plain area. The results of the experiments shows that the water levels increases as the flow increases and causes the flood. The recorded velocity was inconsistent and fluctuates but reduces in value as the flow increases. The introduction of cut off to the channel reduces the water levels and proved to be effective to solve flood problem on meandering rivers to certain discharge. The experiment also shows flood does not occurs near the rivermouth under all conditions.
format Thesis
qualification_level Master's degree
author Mohamad, Mohd. Fauzi
author_facet Mohamad, Mohd. Fauzi
author_sort Mohamad, Mohd. Fauzi
title Physical flood modelling evaluation of river meandering channel in tidal effected reach
title_short Physical flood modelling evaluation of river meandering channel in tidal effected reach
title_full Physical flood modelling evaluation of river meandering channel in tidal effected reach
title_fullStr Physical flood modelling evaluation of river meandering channel in tidal effected reach
title_full_unstemmed Physical flood modelling evaluation of river meandering channel in tidal effected reach
title_sort physical flood modelling evaluation of river meandering channel in tidal effected reach
granting_institution Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department Faculty of Civil Engineering
publishDate 2008
url http://eprints.utm.my/id/eprint/9570/1/MohdFauziMohamadMFKA2008.pdf
_version_ 1747814757540298752
spelling my-utm-ep.95702018-07-04T11:47:41Z Physical flood modelling evaluation of river meandering channel in tidal effected reach 2008-11 Mohamad, Mohd. Fauzi TC Hydraulic engineering. Ocean engineering TA Engineering (General). Civil engineering (General) Flood is one of the disasters in this country where around 29,000 km² or 9% of the country was exposed to it. Understanding the flood phenomena along the river and flood plain would be able to help in the assessment of the impact of human activity in the river basin. Modelling of river and flood plain will form as a basis for this understanding. The objectives of this study are to develop a physical model of river meandering channel in tidal effected reach and to assess the flood plain and water level for various flow under existing conditions and flood mitigation measures using cut off system. Scope of this study includes the developement of physical model and the assessment of flood plain and water level. It includes gathering the available data and construction of physical model for parts of Selangor River at NAHRIM laboratory. The model was tested for different flows with various conditions. In the first part, the test was carried out at low water, mean sea and high water for existing alignment. In the second part of the study, cut off was intruduce at one stretch of the channel section and similar test cases were carried out. Readings for velocity and water levels were taken at eight stations along the river channel and another eight locations in the flood plain area. The results of the experiments shows that the water levels increases as the flow increases and causes the flood. The recorded velocity was inconsistent and fluctuates but reduces in value as the flow increases. The introduction of cut off to the channel reduces the water levels and proved to be effective to solve flood problem on meandering rivers to certain discharge. The experiment also shows flood does not occurs near the rivermouth under all conditions. 2008-11 Thesis http://eprints.utm.my/id/eprint/9570/ http://eprints.utm.my/id/eprint/9570/1/MohdFauziMohamadMFKA2008.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering 1 Abdullah, (2006). Managing Water Resources in Malaysia: The Use of Isotope Technique and Its Potential. In: Seminar on Water Resources and Environment, 3-5 April 2006, Bukit Merah, Taiping. Department of Drainage and Irrigation, Malaysia. 2 Chow, V.T, Maidment, D. R, Mays, L.W. (1988). Applied Hydrology. Singapore: McGraw-Hill International Edition. 3 Chow, V.T. (1959). Open Channel Hydraulic. New York: Mc Graw-Hill International Edition. 4 Dominic Reeve, Andrew Chadwick and Christopher Fleming, (2004). Coastal Engineering Processes, Theory and Design Practice: Spon Press 5 French, R.H. (1986). Open Channel Hydraulic. New York: Mc Graw-Hill International Edition. 6 Ghosh, S.N. (1998). Tidal Hydrailic Engineering. Netherland: A.A. Balkema Publishers. Pp. 15. 7 Hassan, A.J. (2006). Pemodelan Sungai Dan Dataran Banjir Untuk Penjanaan Peta Risiko Banjir : Kajian Kes Sg. Selangor. Master thesis, Universiti Sains Malaysia. 8 Hiew, K.L. (1996). Flood mitigation and flood risk management in Malaysia. Proceedings of an International Workshop on Flood plain Risk Management, 11- 13 November 1996, Hiroshima, Japan. pp.229-241. 9 ISCO Flow Modules, (2006). Technical Specifications. 10 Jabatan Ukur Dan Pemetaan Malaysia. (2007). Jadual Ramalan Air Pasang Surut (Tide Tables) Malaysia. 11 Krimm, R. W. (1996). Reducing flood losses in the United States. Proceedings of an International Workshop on Flood plain Risk management, 11-13 Nov 1996, Hiroshima, Japan. pp.3-11. 12 Nixon Flowmeters, (2008). Technical Specifications. 13 Paul G. Samuel, (2006). The European Perspective and Reseach on Flooding. Taylor & Francis/Balkema, River Basin Modelling for Flood Mitigation. Pp 21- 58. 14 Ranhill Bersekutu Sdn Bhd & Sepakat Setia Perunding Sdn Bhd. (2002). Master Plan Study on Flood Mitigation and River Management for Sg.Selangor River Basin. Kuala Lumpur: Department of Drainage and Irrigation, Selangor. 15 Sturm, T.W. (2001). Open Channel Hydraulic. New York: Mc Graw Hill Higher Education. 16 Tentera Laut DiRaja Malaysia. (2005). Jadual Pasang Surut – Tide Table Malaysia. Kuala Lumpur: Tentera Diraja Malaysia. 17 US Department of the Interior, (1980). Hydraulic Laboratory Techniques: A Water Resources Technical Publication.

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