Two wells begin pumping at the same rate, Q=2000 m2/d, at the same time. They are screened in a confined aquifer with K=20 m/d, thickness 40m, and storativity3D10-4. There is an observation well located 100m from one well and 200m from the other. What is the drawdown in the observation well after 5 days? In the same aquifer, only one well begins pumping (assume initial drawdown is zero). Initially its rate is 2000 m2/d, and after 5 days the pumping rate increases to 4000m2/d. What is the drawdown in the observation well 100m away after 10 days?

Two wells begin pumping at the same rate, Q=2000 m2/d, at the same time. They are screened in a confined aquifer with K=20 m/d, thickness 40m, and storativity3D10-4. There is an observation well located 100m from one well and 200m from the other. What is the drawdown in the observation well after 5 days? In the same aquifer, only one well begins pumping (assume initial drawdown is zero). Initially its rate is 2000 m2/d, and after 5 days the pumping rate increases to 4000m2/d. What is the drawdown in the observation well 100m away after 10 days?

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter7: Permeability

Section: Chapter Questions

Problem 7.22P: Refer to Figure 7.24. The following data were collected during the field permeability measurement of...

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