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Sadhana

, Volume 9, Issue 1, pp 31–42 | Cite as

Computer model for vedavati ground water basin. Part 1. Well field model

  • Kandula V. N. Sarma
  • K Sridharan
  • A Achutha Rao
  • C S S Sarma
Article
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Abstract

It is shown that a leaky aquifer model can be used for well field analysis in hard rock areas, treating the upper weathered and clayey layers as a composite unconfined aquitard overlying a deeper fractured aquifer. Two long-duration pump test studies are reported in granitic and schist regions in the Vedavati river basin. The validity of simplifications in the analytical solution is verified by finite difference computations.

Keywords

Ground water well field model hard rock leaky aquifer computer model 

List of symbols

D, D

thickness of the aquifer and the aquitard, respectively

K

vertical hydraulic conductivity in aquitard

Q

discharge at pumping well

s, s

drawdown in the aquifer and in the aquitard, respectively

S, S

storage coefficient of the aquifer and of the aquitard (specific yield), respectively

t

time

Tx, Ty

transmissivities in thex direction and in they direction, respectively

u, u

nondimensional parameters in the drawdown solution

W1,W2

well functions in the drawdown solution

x, y

space coordinates along principal axes

z

vertical coordinate

δ ( )

Dirac delta function

erfc

complementary error function

η, ψ

parameters in well functions

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Copyright information

© Indian Academy of Sciences 1979

Authors and Affiliations

  • Kandula V. N. Sarma
    • 1
  • K Sridharan
    • 1
  • A Achutha Rao
    • 1
    • 2
  • C S S Sarma
    • 1
    • 2
  1. 1.Department of Civil EngineeringIndian Institute of ScienceBangaloreIndia
  2. 2.Central Ground Water BoardJayanagar, BangaloreIndia

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