In: Civil Engineering
Given an unconfined aquifer with a saturated thickness of 15 m,
h0, as shown in Fig. 1. Observation wells are located at the radial
distances of 30, 60, and 120 m from the center of pumping
well.
Water is pumped at the rate of 0.015 m^3/sec. After pumping 12
hours, the drwdowns are z1=0.60 m at the radius r1= 30 m , z2 =
0.43 m at r2 = 60 m and z3= 0.26 m at r3 = 120 m.
1. Evaluate the permeability of the aquifer using all three
combinations of selecting two observation wells in the
computation.
2. How many laboratory permeability tests would be required to achieve the accuracy?