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2 years ago

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An aquifer pump test was conducted in a confined aquifer where the initial piezometric surface was at elevation 12.45 m, and wel

l logs indicate that the thickness of the aquifer is 14 m. The well was pumped at 28.24 L/s, and after 1 day the piezometric levels at 25 m and 75 m from the pumping well were measured as 10.89 and 11.45, respectively. Assuming steady state conditions, estimate the transmissivity and hydraulic conductivity of the aquifer.

1 answer:

murzikaleks [220]2 years ago

4 0

Answer:

T = 0.0088 m²/s

Explanation:

given,

initial piezometric elevation = 12.5 m

thickness of aquifer = 14 m

discharge = 28.24 L/s = 0.02824 m³/s

we know

$k = \dfrac{qln(\dfrac{R_2}{R_1})}{2\pi D(H_2-H_1)}$

$k = \dfrac{0.02824 \times ln(\dfrac{75}{25})}{2\pi \times 14 (11.45-10.89)}$

k = 0.629 mm/sec

Transmissibilty

T = k × H

T = 0.629 × 14 × 10⁻³

T = 0.0088 m²/s

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