9.15m thick layer of sandy soil overlies an impervious rock. The groundwater level is at a depth of 1.22m below the top of the soil. Water was pumped out of the soil from a central well at the rate of 5680 kg/min and the drawdown of the water table was noted in two observation wells. These two wells were on a radial line from the centre of the main well at distances of 3.05m and 30.5m. During the pumping the water level in the well nearest to the pump was 4.75m below ground level. In the furthest well was observed to be 2.13m below ground level. Make a sketch of the situation explained in the foregoing and indicate what kind of aquifer is being described. Evaluate the permeability
9.15m thick layer of sandy soil overlies an impervious rock. The groundwater level is at a depth of 1.22m below the top of the soil. Water was pumped out of the soil from a central well at the rate of 5680 kg/min and the drawdown of the water table was noted in two observation wells. These two wells were on a radial line from the centre of the main well at distances of 3.05m and 30.5m. During the pumping the water level in the well nearest to the pump was 4.75m below ground level. In the furthest well was observed to be 2.13m below ground level. Make a sketch of the situation explained in the foregoing and indicate what kind of aquifer is being described. Evaluate the permeability
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A 9.15m thick layer of sandy soil overlies an impervious rock. The groundwater level is at a depth of 1.22m below the top of the soil. Water was pumped out of the soil from a central well at the rate of 5680 kg/min and the drawdown of the water table was noted in two observation wells. These two wells were on a radial line from the centre of the main well at distances of 3.05m and 30.5m. During the pumping the water level in the well nearest to the pump was 4.75m below ground level. In the furthest well was observed to be 2.13m below ground level.
- Make a sketch of the situation explained in the foregoing and indicate what kind of aquifer is being described.
- Evaluate the permeability of this aquifer in m/day.
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