Effect of different types of soil covers on sediment concentration and hydraulic parameters
Soil erosion issue is common among construction sites. The phenomena usually takes place on sloped areas with no soil cover. The main objectives of the research are to determine the sediment concentration of rain induced on different types of covers and also to determine the hydraulic parameters....
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2021
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| Online Access: | http://journalarticle.ukm.my/19076/1/18.pdf http://journalarticle.ukm.my/19076/ https://www.ukm.my/jkukm/si-41-2021/ |
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| Summary: | Soil erosion issue is common among construction sites. The phenomena usually takes place on sloped areas with no soil
cover. The main objectives of the research are to determine the sediment concentration of rain induced on different types
of covers and also to determine the hydraulic parameters. Besides that, the research also has to investigate the relation
of the sediment concentration with hydraulic parameters. This research will take place in rainfall simulator using soil
sample collected from sloped areas. The hydraulic parameters of this experiment consist of flow velocity, flow depth,
shear stress, and unit stream power. Soil sample will be placed on four trays with different types of covers and properly
arranged in the rainfall simulator with slope of 20 ᵒ. The sample will undergo rainfall event for two hours. The surface
runoff collected and the sediment concentration measured using Total Suspended Solid (TSS) testing. The result shows
the stream power of dry leaves is higher among those four covers with 0.0046 msˉ¹ followed by grass cover with 0.0033
msˉ¹ than gravel with 0.0023 msˉ¹, and lastly bare soil cover with 0.0008 msˉ¹. However, sediment concentration and
surface runoff that were produced by bare soil is the highest followed by gravel, then leaves, and lastly grass. Generally,
the sediment production in descending order started with the bare soil, gravel, dry leaves, and grass. From the research
shown, rain induced on vegetation cover can be used as a low-cost initiative to control the soil erosion on construction
slope area. |
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