PERENCANAAN BENDUNGAN MATENGGENG DI KABUPATEN CILACAP
ABSTRACT: One of the efforts
to develop the potency of Cijolang River is with making a dam at Matenggeng Village, Dayeuhluhur
Subdistrict, Cilacap Regency. The first step to design Matenggeng Dam is
hidrology analysis such as: dependable discharge, water requirement and flood
discharge. The dam is projected to supply water requirement in eight
subdistricts, water requirement for irrigation which has 7,175 ha of areas and
hydroelectric power. Dependable discharge is Q 90%. Flood discharge plan of The
Matenggeng Dam is calculated from rainfall data and the result of flow is
1,876.756 m3/s which taken from HSS Gamma 1 with Q100. Matenggeng Dam is
designed with rock fill dam type. The height of the dam is 82.5 meters with
slope ratio 1:2.5 at the upper course and 1:2.25 at the lower course for 50
years lifetime and storage capacity 56 million m3. The spillway design is
choosen with overflow type and takes 30
m of wide with stilling basin (USBR Type II) which use 28 x 73 m as the
dimension. The diversion tunnel design takes 550 m of length and 4 m of
diameter. The cost of Matenggeng Dam Project
is about Rp 568,959,000,000.00 (Five Hundred Sixty Eight Billion Nine
Hundred Fifty Nine Million Rupiahs) with 48 weeks as time target of this
project.
Penulis: Frangky Arfan
Pangaribuan, Bernard Septian, Sri Sangkawati, Sutarto Edhisono
Kode Jurnal: jptsipildd140740
