ANALISIS KAPASITAS PENAMPANG BANJIR KANAL BARAT KOTA SEMARANG UNTUK PERENCANAAN PENGENDALIAN BANJIR

Reza Juan Prakasa (Teknik Sipil FT. UNDIP Jl. Prof. Soedarto SH. Tembalang, Semarang 50275)
Ridho Anggoro (Teknik Sipil FT. UNDIP Jl. Prof. Soedarto SH. Tembalang, Semarang 50275)
Abdul Kadir (Teknik Sipil FT. UNDIP Jl. Prof. Soedarto SH. Tembalang, Semarang 50275)
Al Falah (Teknik Sipil FT. UNDIP Jl. Prof. Soedarto SH. Tembalang, Semarang 50275)

JURNAL KARYA TEKNIK SIPIL
Volume 2, Nomor 1, Tahun 2013

Overflow  in the West Floodway  is a natural event caused by inadequate river capacity to flow the existing discharge.Based on the analysis of hydrological West Floodway with the help of software HEC-HMS (Hydrologic Engineering Center-Hydrologic Modeling System) obtained discharge plan (Q50) of  951.9 m3/s.  The hydraulics analysis  was carried out by the help of software HEC-RAS (Hydrologic Engineering Center-River Analysis System)and the result is an overflow along the 8 km (WF 0-WF 97) in the West Floodway Region. To overcome these  problems, it is necessary to be taken a solution,  that is increasing river capacity. Based on existing field conditions  (limited space) then the plan is  using  2 type of river  profiles, there are at the downstream  river is used for single and double crosssection on the upstream, both is planning  using manning formula.