Tugas2.xlsx

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  • December 2019
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Waktu (menit) 2 4 6 8 10 15 20 30 40 50 60 70 80 90 100 120 135 165 175 195 240 265 285 325 350

DRAWDOWN (meter) 0.18 0.5 0.65 0.72 0.9 1.06 1.22 1.4 1.52 1.62 1.7 1.78 1.81 1.88 1.93 2.01 2.06 2.12 2.18 2.23 2.3 2.34 2.37 2.42 2.49

1lakukan interpretasi untuk data uji pompa dengan metoda tai drawdawn pada suatu sumur bordengan sistem akifer aluvial discharge Q= 0,0189m3/sec (18000 gph dan jarak sumur observasi dengan sumur utama 25meter dan tebal akifer7,5meter

Drawdown 10

1

0.1

1

10

100

1000

10000

Match Point W (u) 7 1/u 300 u 0.003333 t (menit) 200 ho - h 1,9 Diketahui

12000 detik

jawab �=�/4�∆ℎ×�(� �/�) �=0,0189/4×3,14×1,9×7×0,0033 atau 56,16 m2/hari �=0,000651𝑚3/𝑑𝑒𝑡𝑖�

�=�/� �=0,00065/7,5 �=8,66 m3/detik

S= 4.�. �/�2×� �=4×0,00065×12000/625×0,0033 �=0,000164

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