REVIEW HIDROLIS THE DAMPER OF ENERGY ON THE STEM BAYANG WEIR COASTAL SOUTHERN DISTRICT

Abstract

Weirs are the transverse building River serves to elevate water to be taken down and streamed to
the channel through the building retrieval. Review the energy reducer hidrolis on this Shadow
Rods Weirs were planned with the intention in case of hydraulic containment after a springboard
which can result in the downstream channel penggerusan it influenced the existence of high
water on the face as well as the difference in water dihulu mercu and dihilir Weirs. Hydraulic
stepping happened need to be muted with the energy reducer shaped column the column type in
the selection of refuse olakan influenced by several things such as the froude number of the
water depth dihulu the structure of the soil sediments transported by rivers and in terms of the
economy. In making this final Task performed the calculations such as hydrological analysis
calculation calculation column olakan hidrolis Weirs and calculation of stability of Weirs.
Supporting Data are topographic maps scale 150,000 and ainfall data based on 15 years of
observations. These Weirs were planned to age 100 years plan. Calculation of the results
obtained: broad catchment area covering an area of 292 km2, 100 annual discharge (Q100) =
1344,5772 m3/dt and the high energy (H1) = 4.49 m, so it can irrigate farms covering an area of
1362 Ha.
Keywords: weir, high energy, type of column olakan, catchment area.