Hydropower plants is a change of power from hydroelectric
certain heights and discharge it into electricity, using water turbine and
generator. The success of hydropower plants depends on the height of falling
water and the debit. (Sherly, 2008)
In general, the installation of the MHP is a hydroelectric
plant types live streams. Construction of buildings intake to draw water
directly from the river can be dam (intake dam) that ran along the width of the
river or stream instantly share of river water without building dams equipped.
Intake locations must be chosen carefully to avoid problems.
Location riverbed intake must have a relatively stable,
especially when the intake structure without dam (intake dam). Unstable
riverbed prone to erosion so that the bottom surface of the river is lower than
the base of the building air intake, it will impede the flow of water entering
the intake.
Riverbed of coating plate rock is a stable place. The place
where the slope of a small river, the river generally have relatively stable.
On condition that does not allow the location of intake obtained with
relatively stable riverbed and erosion of the riverbed allow to happen, then
the intake building construction must be equipped with a dam to keep the height
of the riverbed around the intake. (Khairul Umri, 2009).
One of the problems that often occur in the installation of
the MHP is the intake structure damage caused by floods. It often occurs at
intakes that are placed on the outer side of the river. On the outer side of
the river is prone to flooding and erosion. Rocks, tree trunks and various
material carried by the flood will lead to that section. Meanwhile, the inner
side is the site of the dam siltation and sedimentation, so it is not suitable
for the location of the intake. The location was good intake is located along a
relatively straight section of the river, where the flow will be pushed into
the intake naturally carry the load (bed load) are small. (continue)
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