(c) A pumping well was drilled penetrating straight into an unconfined aquifer with the thickness of 42 m. The distance of pumping well with first extraction well and second extraction well are 20 and 180 m, respectively. Meanwhile, the drawdown for the first extraction well is 4.5 m, and the second extraction well is 1.5 m. The constant pumping rate has been set at 0.09 m³/s. (i) Sketch the cross section of unconfined aquifer system and label the values. (ii) Determine hydraulic conductivity of the groundwater through the soil media when it was being pumped out and classify the type of soil according to TABLE Q1(c). (iii) Point out THREE (3) negative effects that might happen for over - pumping aquifers.

(c) A pumping well was drilled penetrating straight into an unconfined aquifer with the thickness of 42 m. The distance of pumping well with first extraction well and second extraction well are 20 and 180 m, respectively. Meanwhile, the drawdown for the first extraction well is 4.5 m, and the second extraction well is 1.5 m. The constant pumping rate has been set at 0.09 m³/s. (i) Sketch the cross section of unconfined aquifer system and label the values. (ii) Determine hydraulic conductivity of the groundwater through the soil media when it was being pumped out and classify the type of soil according to TABLE Q1(c). (iii) Point out THREE (3) negative effects that might happen for over - pumping aquifers.

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter8: Seepage

Section: Chapter Questions

Problem 8.11P

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