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Hydrodynamic modelling for flood damage assessment of Sungai Tupai, Taiping, Perak / Baharudin Ahmad

Hydrodynamic modelling for flood damage assessment of Sungai Tupai, Taiping, Perak_Baharudin Ahmad_REDAC_2015_MYMY
Pada masa dahulu, kerugian akibat banjir hanya dapat dinilai selepas kejadian tersebut. Namun begitu, dengan perkembangan teknologi maklumat terutama perkembangan teknologi komputer, kejadian banjir boleh di model dengan permodelan berkomputer dan anggaran kerosakan dan kerugian akibat banjir boleh dinilai dengan lebih cepat atau sebelum kejadian banjir tersebut berlaku. Gabungan teknik permodelan 1D di dalam saluran sungai dan 2D pula di dataran banjir dapat memberi keseimbangan dalam masa yang diperlukan untuk membina model dan ketepatan simulasi. Dengan bantuan teknologi sistem pengurusan geografi (GIS), hasil simulasi dapat dianalisis dan dipersembahkan dalam bentuk visual yang lebih menarik. Objektif kajian ini adalah untuk menghasilkan peta banjir melalui teknik permodelan komputer, menentukan kawasan yang terlibat dan seterusnya menaksir kerugian yang mungkin akan dihadapi. Kawasan yang dipilih untuk kajian ini ialah Sungai Tupai yang mempunyai kawasan tadahan seluas lebih kurang 950 hektar dan 7.5km panjang yang merangkumi kawasan perumahan dan perindustrian dan bertindak sebagai salah satu daripada sistem saliran Bandar Taiping. Hasil daripada kajian yang telah dijalankan, didapati pada kala ulangan 100 tahun, hanya 1.19 peratus daripada keseluruhan kawasan tadahan Sungai Tupai yang digenangi air banjir. Jumlah kerugian yang ditaksirkan menggunakan kaedah yang diperkenalkan oleh JICA (1995) adalah menghampiri RM700,000.00 dengan melibatkan lebih kurang 303 buah rumah dan 1333 penduduk. _______________________________________________________________________ In the past, flood losses or damages can only be determined after the incident. However, with the development of information technology, especially computer technology, a flood can be modelled using desktop computer and estimation of damages and losses due to flooding can be assessed quicker or even before the flooding occurs. The combination of 1D modelling techniques in the river channels and 2D on floodplains balanced the time required to build the model and accuracy of the simulation. With the advancement of Geographical Information System (GIS) technology, simulation results can be analyzed and presented in a more visually appealing manner. The objective of this study is to produce flood maps through computer modeling technique, determine the area involved and further assess the losses that may be encountered. The area selected for this study is Tupai River with a catchment area of approximately 950 hectares and 7.5km in length of Tupai River that includes residential and industrial areas and served as one of the Taiping City drainage system. Finding from the study reveals that in 100 years Average Recurrence Interval of Rainfall, only 119 percent of the total catchment area of Tupai River inundated with flood waters. Total losses estimated using the method introduced by JICA (1995) is approximately RM700,000.00 that involved 303 houses and 1333 resident.
Contributor(s):
Baharudin Ahmad - Author
Primary Item Type:
Thesis
Identifiers:
Accession Number : 875008818
Language:
English
Subject Keywords:
estimation; floodplains; approximately
Sponsor - Description:
Pusat pengajian Kejuruteraan Awam - REDAC
First presented to the public:
12/1/2015
Original Publication Date:
7/22/2020
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
REDAC (River Engineering and Urban Drainage Research Centre)
Citation:
Extents:
Number of Pages - 120
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2020-07-22 12:40:07.956
Submitter:
Mohamed Yunus Yusof

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Hydrodynamic modelling for flood damage assessment of Sungai Tupai, Taiping, Perak / Baharudin Ahmad1 2020-07-22 12:40:07.956