Drainage calculations

Contributed by E.D.Stewart, MA, PhD,

E.1 Theory
E.1.1 General mathematical model

The flow of water in the watertable of homogeneous isotropic soil is governed by Darcy's law:

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where v is the effective velocity of water flow, K is the constant hydraulic conductivity, h is the hydraulic head.

The hydraulic head at any given point is

image

where z is the gravitational head, i.e. the vertical height above the origin of coordinates, and p is the pressure head.

In this appendix only steady flows will be considered, i.e. flows where ...

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