Sediment transport assessment for Sungai Kurau and Sungai Kulim

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Date
2019-06
Authors
Vanaja A/P Ravichandran
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Abstract
Recently, rapid development and urbanisation have contributed drastically towards sand mining activities. These activities have a great impact on river cross section and morphology. Therefore, it is necessary to carry out a sediment transport assessment to test the stability of the current rivers. In this thesis, the sediment transport assessment is carried out for Sungai Kurau and Sungai Kulim. This thesis presents a study on sediment rating curve which includes a comparison of the present study with previous study data and assessment of Yang equation and Engelund-Hansen equations. This thesis also contains study on river cross section, bed load rate, suspended load rate and total bed material load. Sediment transport is the movement of particles in different modes along the flow direction when flow characteristics such as velocity exceeded the threshold condition for the bed material in an alluvial channel. To carry out this assessment, 18 samples are collected for Sungai Kurau and 3 samples are collected for Sungai Kulim. Through the analysis, it is found that, Yang and Engelund-Hansen equation is suitable to predict the sediment transport for both rivers. However, Yang equation is more accurate to predict the sediment transport for both sites. It is also found that Sungai Kurau is still in stable condition when compared with previous study (DID, 2009) based on a sediment rating curve. However, Sungai Kulim is slightly less stable since there is slight significant changes when compared with previous data (DID, 2009 and DID, 1999).
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