REKAYASA NILAI RENATURALISASI SUNGAI BODRI LAMA TERHADAP SUNGAI PECUT, KABUPATEN KENDAL
ABSTRACT: Sedimentation in the
estuary of the Bodri River have a major impact on the flooding problems in the
area around the Bodri River. To overcome this by planning Normalization Pecut
River which has a large enough funding, so it is necessary to value
engineering. The purpose of this paper is to obtain solutions to problems of
sedimentation, coastal erosion, seawater intrusion and flooding, know the
function and cost of the initial design (Normalization Pecut River), as well as
getting the design alternatives (Re-naturalization Bodri Lama River) as a
substitute for the initial design, which is further than the value of the
function and cost. In terms of the normalization function Pecut River hydrologic
analysis of the calculation results obtained by the discharge of floods over 25
years, the amount of Q25=18.236 m3/sec. The amount of sediment transport Pecut
River, is 47.267 tons/year. Results hydraulics analysis with HEC-RAS program
occurs runoff groove along the river, which means there is a flood. To
Re-naturalisation Bodri Lama River flood discharge when re-used 50 years the
amount of Q50=61.58 m³/sec. With the Renaturalisation of Bodri Lama River can
reduce flood discharge in Bodri River at 5.73%. Old Bodri river sediment
transport, amounting to 159.408 tons/ year. The results of the HEC-RAS program
checks the water level in the re-naturalization of the Bodri Lama River be
lower, so the plan is safe from flooding. In terms of costs for normalization
Pecut River RAB calculation results obtained by Rp.34.269.498.000,00 (in words:
Three-Four Billion Two Hundred Sixty-Nine Million Four Hundred Ninety Eight
Thousand), to Renaturalisasi Bodri Lama River at Rp.10.362.242.000,00 (in
words: Ten Billion Three Hundred Sixty-Two Million Two Hundred Forty-Two
Thousand). Based on the analysis of value engineering, Renaturalisasi Bodri
Lama River generate cost savings of RP. 23,907,256,000.00 (in words:
Twenty-Three Billion Nine Hundred and Seven Million Two Hundred Fifty Six
Thousand Rupiah).
Penulis: Yanuar Danu Wijaya,
Sriyana Sriyana, Frida Kistiani
Kode Jurnal: jptsipildd140485
