Abstract:
The floodgates at the Pasar IX dividing building Sei Bingai Subdistrict Tampa
Goni Langkat Regency North Sumatra Province irrigates downstream one-door
irrigation channels to irrigate the water reservoirs into rice fields with the problem
of lack of control of the floodgates in the divider building well due to the distance
of the building responsible for, lack of the resources that guard the flood gates, and
the lack of knowledge of the residents in controlling the flood gates in getting the
height and water discharge that is in accordance with the needs of paddy fields. The
building has 5 sluice gates which are 4 sluice gates directly into the irrigation
channel and 1 sluice gate leading to a paddy field with a 4.24 m
/s discharge
manually, from a paddy sluice having 3 sluice sluice gates out 1.25 m
3
/s. The scope
of this study is to control floodgates to get the height and flow of water holding rice
fields in the building dividers aimed at knowing how to control water in the building
for manually becoming automatic discharge that comes out 5.29 m
3
/s which with
the benefit of helping the person in charge of the building for and community in
controlling the floodgates to the rice fields. Theoretical description supports the
method in controlling floodgates with buoys including water discharge, buoy
volume, buoy lift force, buoy tumbling force and gear to solve the problem of poorly
controlled water discharge according to the needs of paddy fields.
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