The thickness of a horizontal, confined, homogeneous, isotropic aquifer of infinite areal extent is 30m. A well fully penetrating the aquifer was continuously pumped at a constant rate of 0.1 m³/s for a period of 1 day. The drawdowns given in the table below were observed in a fully penetrating well 90 m from the pumping well. Compute the transmissivity and the storativity by using: a) the Theis method of log-log matching. b) the Cooper-Jacob method of semi-log plotting. [For Part a), you have to first use attached Table to plot the values of W(u) versus 1/u on a log-log graph in the range of 10-9

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...
icon
Related questions
Question
The thickness of a horizontal, confined, homogeneous, isotropic aquifer of infinite areal
extent is 30m. A well fully penetrating the aquifer was continuously pumped at a
constant rate of 0.1 m³/s for a period of 1 day. The drawdowns given in the table below
were observed in a fully penetrating well 90 m from the pumping well.
Compute the transmissivity and the storativity by using:
a) the Theis method of log-log matching.
b) the Cooper-Jacob method of semi-log plotting.
[For Part a), you have to first use attached Table to plot the values of W(u) versus 1/u on
a log-log graph in the range of 10-9<u<1.]
t (min)
ho-h (m) t (min)
ho-h (m)
t (min)
ho-h (m) t (min)
ho-h (m)
1
0.14
7
0.39
40
0.66
100
0.81
2
0.70
0.22
0.28
0.40
50
200
0.90
3
9
0.42
60
0.71
400
0.99
4
0.32
0.34
10
0.44
70
0.73
800
1.07
5
21
0.55
80
0.76
1000
1.10
6
0.37
30
0.62
90
0.79
Transcribed Image Text:The thickness of a horizontal, confined, homogeneous, isotropic aquifer of infinite areal extent is 30m. A well fully penetrating the aquifer was continuously pumped at a constant rate of 0.1 m³/s for a period of 1 day. The drawdowns given in the table below were observed in a fully penetrating well 90 m from the pumping well. Compute the transmissivity and the storativity by using: a) the Theis method of log-log matching. b) the Cooper-Jacob method of semi-log plotting. [For Part a), you have to first use attached Table to plot the values of W(u) versus 1/u on a log-log graph in the range of 10-9<u<1.] t (min) ho-h (m) t (min) ho-h (m) t (min) ho-h (m) t (min) ho-h (m) 1 0.14 7 0.39 40 0.66 100 0.81 2 0.70 0.22 0.28 0.40 50 200 0.90 3 9 0.42 60 0.71 400 0.99 4 0.32 0.34 10 0.44 70 0.73 800 1.07 5 21 0.55 80 0.76 1000 1.10 6 0.37 30 0.62 90 0.79
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 4 images

Blurred answer
Knowledge Booster
Groundwater flow
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Principles of Geotechnical Engineering (MindTap C…
Principles of Geotechnical Engineering (MindTap C…
Civil Engineering
ISBN:
9781305970939
Author:
Braja M. Das, Khaled Sobhan
Publisher:
Cengage Learning