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Hantush Wedge
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Recommended Book:

Butler (1998)

 

Hantush Solution for Wedge-Shaped Confined Aquifers

Description

A mathematical solution by Hantush (1962) is useful for determining the hydraulic properties (transmissivity and storativity) of wedge-shaped confined aquifers. Analysis involves matching the Hantush solution to water-level displacement data collected during a pumping test. The solution assumes that thickness of the aquifer varies exponentially.

AQTESOLV for Windows provides visual and automatic methods for matching the Hantush solution to pumping test data. This easy-to-use and intuitive software promotes rapid and accurate determination of aquifer properties.

Assumptions

The following assumptions apply to the use of the Hantush solution:

bulletaquifer has infinite areal extent
bulletaquifer is homogeneous, isotropic and of uniform thickness
bulletpumping well is fully penetrating
bulletflow to pumping well is horizontal
bulletaquifer is confined
bulletflow is unsteady
bulletwater is released instantaneously from storage with decline of hydraulic head
bulletdiameter of pumping well is very small so that storage in the well can be neglected
bulletthe thickness of the aquifer varies exponentially in the direction of flow
bulletthe rate of change in aquifer thickness in the direction of flow does not exceed 0.20
bulletthe influence of pumping has not extended beyond the section of the aquifer at which the tangents of the maximum angles of dip of the confining beds are greater than 0.20

Solution Options

AQTESOLV for Windows provides the following options for the Hantush solution:

bulletvariable pumping rates
bulletmultiple observation wells

References

Hantush, M.S., 1962. Flow of ground water in sands of nonuniform thickness; 3. Flow to wells, Jour. Geophys. Res., vol. 67, no. 4, pp. 1527-1534.


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Last Modified: 22 July 2010