Linear curve fitting methods for analyzing slug tests in compressible aquifer

Hangseok Choi, Chulho Lee, The Bao Nguyen

Research output: Contribution to journalConference article

Abstract

The linear curve fitting methods such as the Hvorslev method and the Bouwer and Rice method provide a rapid and simple means to analyze slug test data for estimating in-situ hydraulic conductivity (k) of geologic material. However, when analyzing a slug test in a relatively compressible aquifer, these methods have difficulties to fit a straight line to the semi-logarithmic plot of the test data that shows a concave-upward curvature because the linear curve fitting methods ignore the role of the compressibility or specific storage (S s) of an aquifer. The comparison of the Hvorslev method and the Bouwer and Rice method is made for a partially-penetrating well geometry to show analytically that the Hvorslev method estimates higher hydraulic conductivity than the Bouwer and Rice method except that the well intake section locates very close to the bottom of the aquifer. The effect of fitting a straight line to the slug test data is evaluated along with the dimensionless compressibility parameter (α) ranging from 0.001 to 1. Copyright ASCE 2007.

Original languageEnglish
Number of pages1
JournalGeotechnical Special Publication
Issue number162
DOIs
Publication statusPublished - 2007
EventGeo-Denver 2007: New Peaks in Geotechnics - Denver, CO, United States
Duration: 2007 Feb 182007 Feb 21

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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