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Cut-off drains are mainly used to protect cultivated land, compounds and roads from uncontrolled runoff, and to divert water from gully heads. In dry areas they can act as infiltration and water retention ditches.
Traditional cut-off drain. A ditch made of soil and stones that protects fields from water runoff. Stones are placed on the lower side of the ditch to raise the soil wall and to stabilize the ditch, reducing the water flow. The technology can be used in several land uses types.
4 days ago · The first three parts contain background information on environmental process and stormwater management, administration aspects and planning processes. The remaining parts contain detailed information on hydrology and hydraulics, runoff quantity control and conveyance, structural and non-structural water quality controls, water quality controls ...
• subsoil drains on one or more sides of a building or cutting, including cut-off drains for interception of groundwater flows from higher land; • drainage systems for mitigating waterlogging or lowering watertables on small to medium areas of land, e.g. less than 500 2m These layouts may involve branch subsoil drains
When in place, the road-drainage system can consist of: (a) cut-off drains (that shield the road from uphill runoff); (b) side drains that channel the water along the road; (c) culverts, pipes, and bridges that take water across the road body; and (d) mitered (turn-out) drains that divert water to the land adjacent to the road.
Assuming a roughness coefficient equivalent to grouted rip rap of 0.020, drain width of 2.2 m slope of 0.020 m/m, and drain depth of 0.40 m, the capacity of the drain is 1.9 m 3 /s.
Cut-Off drains or curtain drains are an effective method of protecting constructed elements from uncontrolled movement and possible accumulation of subsurface water. AWD SITEDRAIN products collect, manage and redirect undesired subsurface water away from important structures.
A contour drain breaks overland flow that is draining down disturbed slopes. It does this by reducing the slope length and thereby reducing the velocity and erosive power of the runoff. The drain also diverts sediment-laden water to appropriate controls via stable outlets.
In road: Drainage. Cut-off surface drains are used to prevent water from flowing without restriction down the slopes of cuttings and embankments. Read More
In steep mountainous areas, cut-off drains can be built using available rock / stone / materials (typical example shown in Figure 3.12), to deviate water to selected areas where...
