foto sungai code (turgo-tungkak)
TRANSCRIPT
![Page 1: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/1.jpg)
S. Code
dalam foto
Foto : Istiarto (2005)
Ni Putu Yunita Kurniawati, Untari Sianipar,
Joko Nugroho, dan Fikri Lukman Hakim
(S1 Swadaya 2004)
Naskah : Istiarto
![Page 2: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/2.jpg)
Istiarto JTSL FT UGM 2
S. C
od
e
![Page 3: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/3.jpg)
Istiarto JTSL FT UGM 3
Sungai-sungai yang berhulu di G. Merapi
K. B
oy
on
g
K. K
un
ing
![Page 4: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/4.jpg)
Istiarto JTSL FT UGM 4
Sabo fasility at Merapi.jpg
![Page 5: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/5.jpg)
Istiarto JTSL FT UGM 5
Sabo fasility at Boyong.jpg
![Page 6: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/6.jpg)
Istiarto JTSL FT UGM 6
Bencana alam terkait dengan aktivitas G. Merapi(Gambar: Proyek Merapi; Animasi: Istiarto)
awan panas
abu vulkanik
kerikil
lava
![Page 7: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/7.jpg)
Istiarto JTSL FT UGM 7
Bencana alam terkait dengan aktivitas G. Merapi(Gambar: Proyek Merapi; Animasi: Istiarto)
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Istiarto JTSL FT UGM 8
Pola penanggulangan bencana banjir lahar(Courtesy: STC)
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Istiarto JTSL FT UGM 9
di dekat puncak (daerah produksi)
• Jenis bangunan• Check-dams
• dam penahan sedimen
• dam pengarah aliran sedimen
• Tujuan• Menahan, menampung sedimen
• Mengontrol aliran sedimen, mengurangi debit puncak aliran sedimen
• Mengurangi energi kinetik aliran sedimen
• Mengarahkan aliran sedimen, mencegah penyebaran aliran sedimen
![Page 10: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/10.jpg)
Istiarto JTSL FT UGM 10
di lereng (daerah transportasi)
• Jenis bangunan• Check-dams
• Normalisasi alur
• Tanggul
• Krib
• Tujuan• Menahan, menampung sedimen
• Mengontrol aliran sedimen
• Mengarahkan aliran sedimen
• Mencegah limpasan sedimen
• Menstabilkan alur
• Mencegah gerusan
![Page 11: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/11.jpg)
Istiarto JTSL FT UGM 11
di kaki gunung (daerah endapan)
• Jenis bangunan• Kantong lahar
• Kanalisasi
• Tanggul
• Krib
• Tujuan• Menampung sedimen
• Mengontrol aliran sedimen
• Mengarahkan aliran sedimen
• Mencegah limpasan sedimen
• Menstabilkan alur
• Mencegah gerusan
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Istiarto JTSL FT UGM 12
Stabilisasi Dasar Sungai
• Jenis bangunan
• Dam konsolidasi
• Groundsill
• Girder
• Tujuan
• Menstabilkan dasar sungai
• Mencegah erosi, degradasi dasar sungai
• Melindungi bangunan (check-dam) di sisi hulu
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Istiarto JTSL FT UGM 13
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Istiarto JTSL FT UGM 14
No Jenis Fungsi utama Lokasi
1 Dam penahan bertingkat
(stepped dam)
Mencegah erosi
vertikal dan horizontal
Mencegah perluasan
galur
Di daerah hulu
pada galur
sungai dengan
bentuk profil
huruf V
2 Dam pengendali
(checkdam)
Mengendalikan
sedimen: menahan,
menampung,
mengontrol
Memperkecil energi
aliran debris
Mereduksi debit
puncak sedimen
Pada palung
sungai
Bentuk profil
sungai huruf U
3 Dam stabilisator dasar
(groundsill/consolidation
dam/bottom controller)
Menstabilkan dasar
Mengarahkan aliran
Di sebelah hilir
dasar yang
distabilisasi
4 Kantong sedimen
(sand pocket)
Mencegah penyebaran
aliran sedimen
Menampung sedimen
Kipas alluvial
5 Kanalisasi
(channal works)
Menstabilkan alur
sungai agar tidak
berpindah
Kipas alluvial
6 Tanggul pengarah
(training dyke)
Mencegah limpasan
sedimen/debris
Mengarahkan aliran
sedimen/debris
Tempat-tempat
rawan limpasan
7 Lindungan tebing
(bank protection)
Melindungi tebing
terhadap erosi
Pada tebing
yang rawan
terhadap erosi
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S. Code dalam Foto
Turgo Tegal – Pulowatu
Pulowatu – Rejodani
Rejodani – Plemburan
Plemburan – Gemawang
Gemawang – Sekip
Sekip – Tungkak
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S. Code
Turgo Tegal Jembatan Pulowatu
Foto : Ni Putu Yunita Kurniawati (2004)
Naskah : Istiarto
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Istiarto JTSL FT UGM 17
checkdam
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Istiarto JTSL FT UGM 18
Checkdam
• Stabilitas
• dapat bertahan terhadap guling
• dapat bertahan terhadap gelincir
• tidak terjadi retak: < izin
• tanah fondasi tidak runtuh
• floating foundation
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Istiarto JTSL FT UGM 19
Checkdam
• Beberapa titik lemah
• Sambungan antar bagian struktur atau antar
blok (beton, pasangan batu).
• Mercu dan sayap harus tahan terhadap benturan
dan hempasan banjir lahar.
• Sayap harus menyatu dengan tebing sungai;
perlu perkuatan lereng.
• Lantai lindung hilir rentan terhadap gerusan.
![Page 20: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/20.jpg)
Istiarto JTSL FT UGM 20
BO-D7
slit-type dam
dibangun 1996
hulu
hilir
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Istiarto JTSL FT UGM 21
BO-D7: aliran lahar pada tahun 2000
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Istiarto JTSL FT UGM 22
BO-D6
BO-D5
BO-D4
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Istiarto JTSL FT UGM 23
BO-D3
slit-type dam
mercu sbg jalan (jembatan)
![Page 24: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/24.jpg)
Istiarto JTSL FT UGM 24
BO-D2 (BO-C1B)
![Page 25: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/25.jpg)
Istiarto JTSL FT UGM 25
BO-D1 (closed-type dam)
drain holes
tanpa tanggul
![Page 26: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/26.jpg)
Istiarto JTSL FT UGM 26
BO-C2A
consolidation dam
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Istiarto JTSL FT UGM 27
BO-C1A
consolidation dam
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Istiarto JTSL FT UGM 28
BO-C8A
consolidation dam (slit type)
merangkap jalan/jembatan
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Istiarto JTSL FT UGM 29
BO-C9
consolidation dam
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Istiarto JTSL FT UGM 30
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S. Code
Jembatan Pulowatu Jembatan Rejodani
Foto : Untari Sianipar (2004)
Naskah : Istiarto
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Istiarto JTSL FT UGM 32
consolidation dam
groundsill
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Istiarto JTSL FT UGM 33
awal
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Istiarto JTSL FT UGM 34
BO-C11
BO-C11B
BO-C11
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Istiarto JTSL FT UGM 35
BO-C11B
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Istiarto JTSL FT UGM 36
BO-C3
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Istiarto JTSL FT UGM 37Consolidation dam BO-C2B
tanggul
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Istiarto JTSL FT UGM 38
Groundsill BO-GS2A
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Istiarto JTSL FT UGM 39
Groundsill
BO-GS5
peninggian mercu
untuk pengambilan air
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Istiarto JTSL FT UGM 40
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S. Code
Jembatan Rejodani Jembatan Plemburan
Foto : Joko Nugroho (2004)
Naskah : Istiarto
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Istiarto JTSL FT UGM 42
Bangunan
• Sebagian besar merupakan groundsill → stabilisasi dasar sungai
• BOGS0 – BOGS12
• Terdapat beberapa bendung irigasi
• Bendung Kadipiro
• Bendung Kayen
• Bendung Plemburan
• Sebagian tebing sungai telah diperkuat (lining, talud, revetment) dengan pasangan batu kali
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Istiarto JTSL FT UGM 43
Groundsill BO-GS5, mercu ditinggikan untuk menaikkan muka air
dan menampung air.
![Page 44: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/44.jpg)
Istiarto JTSL FT UGM 44
Groundsill BO-GS7, stabilisasi dasar sungai,
mengamankan Jembatan Ngaglik di sisi hulu.
![Page 45: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/45.jpg)
Istiarto JTSL FT UGM 45
Groundsill BO-GS8, mercu dinaikkan dengan bambu
untuk menampung air.
![Page 46: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/46.jpg)
Istiarto JTSL FT UGM 46
Groundsill BO-GS8
hulu
hilir
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Istiarto JTSL FT UGM 47
Kanalisasi: groundsill (BO-GS10), tanggul, talud.
Groundsill difungsikan pula sebagai jalan.
![Page 48: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/48.jpg)
Istiarto JTSL FT UGM 48
Groundsill BO-GS10, difungsikan pula sebagai jalan.
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Istiarto JTSL FT UGM 49
BO-GS11
BO-GS10
Groundsill BO-GS11 di latar depan dan BO-GS10 di latar belakang
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Istiarto JTSL FT UGM 50
Bendung Kadipiro
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Istiarto JTSL FT UGM 51
Bendung Kayen
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Istiarto JTSL FT UGM 52
Bendung Plemburan
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Istiarto JTSL FT UGM 53
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S. Code
Dusun Lempong, Sariharjo
Foto : Istiarto (Maret 2005)
Naskah : Istiarto
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Istiarto JTSL FT UGM 55
Dusun
Plemburan
Dusun
Nglempong
jembatan
groundsill
![Page 56: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/56.jpg)
Istiarto JTSL FT UGM 56
menghalangi aliran →
mempersempit tampang sungai
pilar
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Istiarto JTSL FT UGM 57
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Istiarto JTSL FT UGM 58
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Istiarto JTSL FT UGM 59
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Istiarto JTSL FT UGM 60
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S. Code
Jembatan Gemawang Jembatan Sardjito
Foto : Fikri Lukman Hakim (2004)
Naskah : Istiarto
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Istiarto JTSL FT UGM 62
BO-D8
BO-GS6
BO-GI6
BO-GS5
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Istiarto JTSL FT UGM 63
BO-GI5
BO-GS4
BO-GS3
BO-GI4
Di kawasan
kampus FT UGM
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Istiarto JTSL FT UGM 64
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S. Code
Sekip – Tungkak
(Jembatan Sardjito – Jembatan Tungkak)
Foto : Istiarto (Maret 2005)
Naskah : Istiarto
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Istiarto JTSL FT UGM 66
Jembatan Kewek (arah hilir)
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Istiarto JTSL FT UGM 67
Jembatan Kewek (arah hulu)
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Istiarto JTSL FT UGM 68
Jembatan Juminahan, Tegal Panggung (arah hilir)
![Page 69: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/69.jpg)
Istiarto JTSL FT UGM 69
Jembatan Juminahan, Tegal Panggung (arah hulu)
![Page 70: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/70.jpg)
Istiarto JTSL FT UGM 70
Jembatan Jambu (arah hilir)
![Page 71: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/71.jpg)
Istiarto JTSL FT UGM 71
Jembatan Jambu (arah hulu)
![Page 72: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/72.jpg)
Istiarto JTSL FT UGM 72
Jembatan Sayidan (arah hilir)
![Page 73: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/73.jpg)
Istiarto JTSL FT UGM 73
Jembatan Sayidan (arah hulu)
![Page 74: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/74.jpg)
Istiarto JTSL FT UGM 74
Jembatan Tungkak (arah hilir)
![Page 75: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/75.jpg)
Istiarto JTSL FT UGM 75
Jembatan Tungkak (arah hulu)
![Page 76: Foto Sungai Code (Turgo-Tungkak)](https://reader031.vdocuments.pub/reader031/viewer/2022021503/587745e51a28ab9c3c8bb7b2/html5/thumbnails/76.jpg)
Istiarto JTSL FT UGM 76