Environmental Engineering Reference
In-Depth Information
of the table corresponding times and drawdowns are given for the various
measurements. The example data-set was taken from Krusemann and de Ridder
(
1973
).
Hint
: use the derivative of the well function
@
W
ð
u
Þ
@
u
¼
ðuÞ
u
exp
(12.13)
to show the following two equalities:
@
W
@
T
¼
@
W
@
u
@
u
@
T
¼
exp
ðuÞ
(12.14)
T
and
@
W
@
S
¼
@
W
@
u
@
u
exp
ðuÞ
S
@
S
¼
(12.15)
Formulae (
12.4
) and (
12.5
) have to be used in the automatic parameter estima-
tion procedure that is based on derivatives and is demonstrated above and in
Chap. 10.4.
References
de Glee GJ (1930) Over grondwaterstromingen bij wateronttrekking door middel van putten.
J. Waltman, Delft, p 175, in Dutch
Krusemann GP, de Ridder NA (1973) Untersuchung und Anwendung von Pumpversuchen.
Verlagsges R M
uller, Koln, p 191, in German
Krusemann GP, de Ridder NA (1991) Analysis and evaluation of pumping test data. Intern. Inst.
for Land Reclamation and Improvement (ILRI), Wageningen, p 377
Theis CV (1983) The relation between the lowering of the piezometric surface and the rate and
duration of discharge of a well using ground-water storage. In: Freeze RA, Back W (eds)
Physical hydrogeology. Hutchinson Ross Publ, Stroudsburg, pp 141-146
Thiem G (1906) Hydrologische methoden. J.M.Gebhardt, Leipzig, p 56, in German
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