Example 5.23 Two 30 cm wells completely penetrate an artesian aquifer of thickness 15 m and are spaced at 200 m. Permeability of the aquifer is 60 m/day. When one well is pumped at the rate 2000 Ipm, the drawdown in the well is 5 m. Assume a radius of influence of 300 m and steady state conditions. What will be the discharge when both the wells are pumped keeping the drawdown at 5 m. If a third well is located at 200 m to form an equilateral triangle and all the three wells pumped keeping the drawdown at 5 m, what is the percentage reduction in discharge ? What is the percentage reduction in discharge if another well is added to form a square
Example 5.23 Two 30 cm wells completely penetrate an artesian aquifer of thickness 15 m and are spaced at 200 m. Permeability of the aquifer is 60 m/day. When one well is pumped at the rate 2000 Ipm, the drawdown in the well is 5 m. Assume a radius of influence of 300 m and steady state conditions. What will be the discharge when both the wells are pumped keeping the drawdown at 5 m. If a third well is located at 200 m to form an equilateral triangle and all the three wells pumped keeping the drawdown at 5 m, what is the percentage reduction in discharge ? What is the percentage reduction in discharge if another well is added to form a square
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Example 5.23 Two 30 cm wells completely penetrate an artesian aquifer of thickness 15 m
ell decreases.
spaced at 200 m. Permeability of the aquifer is 60 m/day. When one well is pumped at
and are
the rate 2000 Ipm, the drawdown in the well is 5 m. Assume a radius of influence of 300m and
steady state conditions. What will be the discharge when both the wells are pumped keeping
the drawdown at 5 m. If a third well is located at 200 m to form an equilateral triangle and all
the three wells pumped keeping the drawdown at 5 m, what is the percentage reduction in
discharge ? What is the percentage reduction in discharge if another well is added to form a
square ?
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