hw3two - ~ ,/ "," -' ~t/~ . ! ~ A homogeneous confined...

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~~ ,/ "," -' ~t/~ ! - '-.:;: = II A homogeneous confined aquifer is tapped by.a fully-penetrating well whose radius is 225 millimeters: The aquifer transmissivity is 8.35xlO-4m2/s and the storage coefficient is 0.00065. For the given parameters determine the following: -1 . 1. Drawdown at 50 meters from the pumping well ~ and 24 hours after the . beginningofpumpingwiththerate of 12litersper second(0.012m3/s). 2. Time after which the drawdown at 30 meters from the pumping well would be 2.5 metersifthe pumpingratewas9 litersper second. . 3. Pumping rate needed to produce.1.5-meter drawdown at 28 meters from the pumping wellafter 10daysofpumping. . . . 4. Distance at 'which the drawdown is 0.85 meters after one week of pumping with the rate of 5 liters per second. . -A r . . 5. The radius of well influence after 5 days and 6 months of pumping with the rate of 15 litersper second. ~. ~ ? " / p ffV\' f)cK A. p'M$ll~
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This note was uploaded on 04/19/2010 for the course CE 421 taught by Professor Shu-guangli during the Spring '05 term at Michigan State University.

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