An engineering measure used to conserve soil in erodible areas is the check dam. An erosion control dam reduces the velocity of a waterway so it can control erosion.
Floodwaters are held back, and sediment is trapped. The embankment and spillway are both parts of it. In some check dams, only the embankment is present. The check dam will form a water body behind it at the start of construction, which is gradually filled by sediment deposits.
Functions of Check Dam
The check dams reduce the velocity of water by pre-designing and constructing them. Silt up and trap the silt in gullies to raise the bed level and reduce the slope. Stabilize the slopes on the sides. The soil should allow for plant growth and to contain water for the stability of banks.
Site Surveying of Check Dam
A dam built of concrete mortared rock cannot exceed 8 m in height, while a dam made of log cribs cannot exceed 2 m. An average dam with a height of 2 m in a channel with a 20-degree angle will require 12 m spacing.
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Published By
Arka Roy
www.constructioncost.co
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