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Unformatted text preview: Q3.6 A well pumping test was carried out to determine the bulk permeability of a confined aquifer. The aquifer was overlain by a clay layer 4 m thick, the depth of the aquifer was 20 m, and the initial piezometric level in the aquifer was 2m below ground level. After a period of pumping when steady-state conditions had been reached, the following observations were made. pumped flowrate q = 1.637 litres/second well radius = 0.1 m drawdown just outside well = 2 m drawdown in piezometer at 100m distance from well = 0.2 m Deriving from first principles any equations you need to use, determine the bulk permeability of the aquifer. Would your analysis still apply for a drawdown in the well of 4 m? [University of London 2nd year BEng (Civil Engineering) examination, Queen Mary and Westfield College]...
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This note was uploaded on 12/28/2011 for the course CHM 4302 taught by Professor Stuartchalk during the Fall '11 term at UNF.
- Fall '11
- Analytical Chemistry