Hvorslev Slug Test Solution for Confined Aquifers

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Hvorslev Slug Test Solution for Confined Aquifers

Description

A mathematical solution by Hvorslev (1951) is useful for determining the hydraulic conductivity of confined aquifers. Analysis involves matching a straight-line solution to water-level displacement data collected during a slug test. The Hvorslev method also yields appropriate estimates of K for unconfined aquifers (more information).

AQTESOLV for Windows provides visual and automatic methods for matching the Hvorslev solution to slug 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 Hvorslev solution:

	aquifer has infinite areal extent
	aquifer is homogeneous and of uniform thickness
	aquifer potentiometric surface is initially horizontal
	test well is partially penetrating
	a volume of water, V, is injected or discharged from the well instantaneously
	aquifer is confined
	flow is steady

Solution Options

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

	partially penetrating wells
	correction for gravel pack porosity
	hydraulic conductivity anisotropy

References

Hvorslev, M.J., 1951. Time Lag and Soil Permeability in Ground-Water Observations, Bull. No. 36, Waterways Exper. Sta. Corps of Engrs, U.S. Army, Vicksburg, Mississippi, pp. 1-50.