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Researchers:
The objectives of the study are:
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To determine engineering parameters for design of ecological drainage
system
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To
determine hydraulic capacity of ecological drainage system
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To investigate effectiveness of ecological drainage system in peak
discharge control
The project’s major project achievements are the verification of Manning’s n
values for bio-retention swales, calibration of required parameters for SWMM
modeling, and confirmation of swale capability in flow attenuation for
various rainfall events. The results confirm the flow retarding effect of
swale due to the presence of grass along its boundary. The application of
swale as one of “control-at-source” methods is established over a five-year
period (2003 – 2007) during various rainfall events covering 1-yr, 2-yr,
5-yr, 10-yr and 50-yr events.
Publications:
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Ab. Ghani, A., Zakaria, N.A., Abdullah, R., Yusof, M. F., Mohd Sidek,
L., Kassim, A. H. & A. Ainan. (2004). Bio-Ecological Drainage System (BIOECODS):
Concept, Design and Construction. 6th International Conference on
Hydroscience and Engineering (ICHE-2004), May 30-June 3, Brisbane,
Australia <Download>
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Ainan, A., Zakaria, N.A., Ab. Ghani, A., Abdullah, R., Mohd Sidek, L.,
Yusof, M. F. & Wong, L.P. (2004).
Peak Flow Attenuation Using Ecological Swale and Dry Pond. 6th
International Conference on Hydroscience and Engineering (ICHE-2004),
May 30-June 3, Brisbane, Australia <Download>
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Abdullah, R., Zakaria, N.A., Ab.
Ghani, A., Mohd Sidek, L., Ainan, A. & Wong, L.P.(2004). BIOECODS
Modelling Using SWMM. 6th International Conference on Hydroscience
and Engineering (ICHE-2004), May 30-June 3, Brisbane, Australia <Download>
SWMM Modeling Result
Observed Values of
Manning’s n for Station A (Swale Type B)
|
Date |
Flow Depth(m) |
Velocity,
V
(m/s) |
Discharge, Q
(m3/s) |
Manning’s n |
|
26.09.2006 |
0.40 |
0.078 |
0.059 |
0.137 |
|
11.11.2006 |
0.47 |
0.096 |
0.087 |
0.119 |
|
15.11.2006 |
0.31 |
0.057 |
0.027 |
0.150 |
|
08.12.2006 |
0.50 |
0.106 |
0.100 |
0.114 |
Variation of Manning n
|
Test Rig for Sub-drainage
component
Sub-drainage component
Experimental Work
Discharge measurement station
(Site A)
Discharge measurement station
(Site B)
Flow discharge measurement
|