REHABILITASI BENDUNG SINOMAN DI KALI 2.5 Hidrograf Snyder-Alexeyef ... hidrograf terukur adalah...

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Transcript of REHABILITASI BENDUNG SINOMAN DI KALI 2.5 Hidrograf Snyder-Alexeyef ... hidrograf terukur adalah...

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    REHABILITASI BENDUNG SINOMAN DI KALI BRANGKAL

    UNTUK MENGATASI BANJIR DI DESA SOOKO, KOTA

    MOJOKERTO

    TESIS

    Untuk Memenuhi Sebagian Persyaratan Mencapai Derajat Magister

    Oleh:

    IWAN JOKO SULOMO

    NIM S941302019

    PROGRAM PASCASARJANA

    UNIVERSITAS SEBELAS MARET

    SURAKARTA

    2015

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    viii

    DAFTAR ISI

    HALAMAN JUDUL ............................................................................................................... i

    HALAMAN PERSETUJUAN................................................................................................. ii

    HALAMAN PENGESAHAN ................................................................................................. iii

    PERYATAAN ........................................................................................................................ iv

    KATA PENGANTAR ............................................................................................................. v

    UCAPAN TERIMA KASIH .................................................................................................... vi

    DAFTAR ISI .......................................................................................................................... viii

    DAFTAR GAMBAR ............................................................................................................... x

    DAFTAR TABEL ................................................................................................................... xi

    DAFTAR SIMBOL ................................................................................................................. xiii

    DAFTAR LAMPIRAN ............................................................................................................ xv

    ABSTRAK ............................................................................................................................... xvi

    ABSTRACT ............................................................................................................................ xvii

    BAB I PENDAHULUAN ........................................................................................................ 1

    1.1 Latar Belakang ...................................................................................................... 2

    1.2 Rumusan Masalah ................................................................................................. 2

    1.3 Batasan Masalah ................................................................................................... 2

    1.4 Tujuan Penelitian .................................................................................................. 3

    1.5 Manfaat Penelitian ................................................................................................ 3

    BAB II TINJAUAN PUSTAKA DAN LANDASAN TEORI

    2.1 Tinjauan Pustaka .................................................................................................. 4

    2.1.1 Debit Banjir ............................................................................................... 4

    2.1.2 Tinggi Muka Air ....................................................................................... 6

    2.1.3 Bendung .................................................................................................... 6

    2.2 Landasan Teori ...................................................................................................... 6

    2.2.1 Debit Banjir ............................................................................................... 6

    2.2.2 Tinggi Muka Air ....................................................................................... 23

    2.2.3 Bendung .................................................................................................... 25

    BAB III METODE PENELITIAN .......................................................................................... 28

    3.1 Lokasi Penelitian ................................................................................................... 28

    3.2 Parameter dan Variabel ......................................................................................... 29

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    ix

    3.3 Data ....................................................................................................................... 29

    3.4 Alat yang digunakan .............................................................................................. 29

    3.5 Langkah-langkah Penelitian ................................................................................... 31

    3.6 Analisis Data .......................................................................................................... 32

    BAB IV HASIL DAN PEMBAHASAN ................................................................................. 33

    4.1 Debit ...................................................................................................................... 33

    4.1.1 Data Hujan ................................................................................................ 33

    4.1.2 Uji Kepanggahan Data Hujan ................................................................... 33

    4.1.3 Hujan Maksimum Harian Rerata Daerah .................................................. 36

    4.1.4 Agihan Frekuensi Hujan ........................................................................... 37

    4.1.5 Hujan Rancangan ...................................................................................... 41

    4.1.6 Intensitas Hujan, Pola Agihan Hujan Jam-jaman ..................................... 42

    4.1.7 Analisis Hidrograf Terukur ....................................................................... 44

    4.1.8 Debit Rencana ........................................................................................... 46

    4.2 Tinggi Muka Air ................................................................................................... 50

    4.2.1 Geometri Jaringan Sungai ......................................................................... 50

    4.2.2 Input data Tampang Melintang Sungai ..................................................... 51

    4.2.3 Input bangunan bendung dengan menu inline structure ........................... 52

    4.2.4 Input data aliran dan boundary condition ................................................ 52

    4.2.5 Hasil simulasi ............................................................................................ 53

    4.3 Bendung ................................................................................................................. 56

    4.3.1 Input bangunan bendung dengan menu inline structure ........................... 56

    4.3.2 Hasil simulasi ............................................................................................ 57

    4.4 Peninggian Tanggul ............................................................................................... 60

    BAB V KESIMPULAN DAN SARAN .................................................................................. 64

    5.1 Kesimpulan ............................................................................................................ 64

    5.2 Saran ...................................................................................................................... 64

    DAFTAR PUSTAKA

    LAMPIRAN

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    xi

    DAFTAR TABEL

    Tabel 2.1. Nilai Kritik Q dan R.............................................................................................. 7

    Tabel 2.2. Tabel Agihan Chi Kuadrat X2 ............................................................................... 11

    Tabel 2.3. Tabel Nilai kritis Do untuk Uji Smirnov-Kolmogorov ......................................... 11

    Tabel 2.4. Nilai Variabel (k) Reduksi Gauss ......................................................................... 12

    Tabel 2.5. Nilai Sn dan Yn ..................................................................................................... 12

    Tabel 2.6. Nilai Variabel (Y) Reduksi Gumbel ..................................................................... 13

    Tabel 2.7. Nilai k Agihan Log Pearson Type III ................................................................... 13

    Tabel 3.1 Parameter dan Variable yang terkait dengan penelitian ........................................ 29

    Tabel 4.1 Hujan Maksimum Tahunan DAS Brangkal ........................................................... 33

    Tabel 4.2 Hujan Harian Maksimum dan Jumlah Hujan Tahunan Sta. Cakarayam ............... 34

    Tabel 4.3 Nilai Kritik Q untuk Uji Kepanggahan .................................................................. 34

    Tabel 4.4 Uji Kepanggahan Sta. Cakarayam ......................................................................... 35

    Tabel 4.5 Uji Kepanggahan Stasiun Hujan DAS Brangkal ................................................... 35

    Tabel 4.6 Nilai Koefisien Tiessen ........................................................................................