a) A 30-cm well completely penetrates an artesian aquifer. The length of the strainer* is 25 m. Determine the discharge from the well when the drawdown at the pumping well is 4.0 m. The coefficient of permeability of the aquifer is 45 m/day. Assume the radius of influence of the well is 350 m. *length of strainer = thickness of the aquifer b) A 30-cm well fully penetrates an unconfined aquifer of saturated depth 25 m. When a discharge of 2100 Ipm was being pumped for a long time, observation wells at radial distances of 30 m and 90 m indicated drawdown of 5 and 4 m respectively. i. Estimate the coefficient of permeability and transmissibility of the aquifer. ii. What is the drawdown at the pumping well? *lpm = liters per minute *h = H - s, where H = saturated depth
a) A 30-cm well completely penetrates an artesian aquifer. The length of the strainer* is 25 m. Determine the discharge from the well when the drawdown at the pumping well is 4.0 m. The coefficient of permeability of the aquifer is 45 m/day. Assume the radius of influence of the well is 350 m. *length of strainer = thickness of the aquifer b) A 30-cm well fully penetrates an unconfined aquifer of saturated depth 25 m. When a discharge of 2100 Ipm was being pumped for a long time, observation wells at radial distances of 30 m and 90 m indicated drawdown of 5 and 4 m respectively. i. Estimate the coefficient of permeability and transmissibility of the aquifer. ii. What is the drawdown at the pumping well? *lpm = liters per minute *h = H - s, where H = saturated depth
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![a) A 30-cm well completely penetrates an artesian aquifer. The length of the strainer* is 25 m. Determine the discharge from the well
when the drawdown at the pumping well is 4.0 m. The coefficient of permeability of the aquifer is 45 m/day. Assume the radius of
influence of the well is 350 m.
*length of strainer = thickness of the aquifer
b) A 30-cm well fully penetrates an unconfined aquifer of saturated depth 25 m. When a discharge of 2100 Ipm was being pumped for a
long time, observation wells at radial distances of 30 m and 90 m indicated drawdown of 5 and 4 m respectively.
i. Estimate the coefficient of permeability and transmissibility of the aquifer.
ii. What is the drawdown at the pumping well?
*Ipm = liters per minute
*h = H - s, where H = saturated depth](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3d7e5205-5afe-418f-846c-a656b5ebbea0%2Fa1db9738-e556-4d5b-ba95-b96693bff40f%2Ff2yx71vc_processed.png&w=3840&q=75)
Transcribed Image Text:a) A 30-cm well completely penetrates an artesian aquifer. The length of the strainer* is 25 m. Determine the discharge from the well
when the drawdown at the pumping well is 4.0 m. The coefficient of permeability of the aquifer is 45 m/day. Assume the radius of
influence of the well is 350 m.
*length of strainer = thickness of the aquifer
b) A 30-cm well fully penetrates an unconfined aquifer of saturated depth 25 m. When a discharge of 2100 Ipm was being pumped for a
long time, observation wells at radial distances of 30 m and 90 m indicated drawdown of 5 and 4 m respectively.
i. Estimate the coefficient of permeability and transmissibility of the aquifer.
ii. What is the drawdown at the pumping well?
*Ipm = liters per minute
*h = H - s, where H = saturated depth
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