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HYDRAULIC HEAD

HYDRAULIC HEAD. Hukum Bernoulli pada aliran saluran. 1. 2. V. datum. HYDRAULIC HEAD. Hukum Bernoulli pada aliran air tanah. Karena kecepatan aliran air tanah sangat kecil, maka.  0. Maka,. Dimana, h e = hydraulic head antara titik 1 dan 2. CONTOH. FLOW NET.

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HYDRAULIC HEAD

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  1. HYDRAULIC HEAD Hukum Bernoulli pada aliran saluran 1 2 V datum

  2. HYDRAULIC HEAD Hukum Bernoulli pada aliran air tanah Karena kecepatan aliran air tanah sangat kecil, maka  0 Maka, Dimana, he = hydraulic head antara titik 1 dan 2

  3. CONTOH

  4. FLOW NET Flow net adalah jaring-jaring aliran air, dimana berlaku garis alir () ortogonal terhadap garis tekanan (h) Merupakan solusi dari pers. Laplace a. Flow net in an solid dam b. Flow net in an earth dam

  5. CREEP LENGTH Scoured he Creep length, L Keterangan: Lv = lengths of vertical flow paths Lh = lengths of horizontal paths Kemiringan ≤ 45 termasuk Lh > 45 termasuk Lv L = Lv + 1/3 Lh

  6. CREEP LENGTH Save Length L ≥ (ijin) (Tabel 5.1)

  7. CREEP LENGTH Contoh,

  8. +84 +74 4 m 3 m Medium sand, creep head rationsijin = 6 30 m 3 CONTOH Contoh, Coba anda selidiki keamanan tubuh bendung tersebut dari bahaya creep,

  9. SECURITY (Pengamanan) Memasang sheet piles (turap)

  10. SECURITY (Pengamanan) Memasang impervious blanket (lapisan kedap air) atau graded fillter

  11. +84 +74 4 m 3 m Medium sand, creep head rationsijin = 6 30 m 3 CONTOH Contoh, jika digunakan turap untuk meningkatkan keamanan bendung terhadap creep, berapa panjang turap harus dipasang. Jika digunakan impervious blanket (lapisan kedap air) di upstream, berapa panjang lapisan tersebut.

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