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A semi-analytical generalized Hvorslev formula for estimating riverbed hydraulic conductivity with an open-ended standpipe permeameter
Pozdniakov S. P.; Wang, P.; Lekhov, M. V.
Source PublicationJournal of Hydrology
2016
Volume540
Pages736-743
KeywordSurface-groundwater exchange Hydraulic conductivity Slug tests Riverbed sediments Hydraulic resistance Superposition surface-water interactions groundwater stream infiltration variability aquifer system
AbstractThe well-known Hvorslev (1951) formula was developed to estimate soil permeability using single-well slug tests and has been widely applied to determine riverbed hydraulic conductivity using in situ standpipe permeameter tests. Here, we further develop a general solution of the Hvorslev (1951) formula that accounts for flow in a bounded medium and assumes that the bottom of the river is a prescribed head boundary. The superposition of real and imaginary disk sources is used to obtain a semi-analytical expression of the total hydraulic resistance of the flow in and out of the pipe. As a result, we obtained a simple semi-analytical expression for the resistance, which represents a generalization of the Hvorslev (1951). The obtained expression is benchmarked against a finite-element numerical model of 2-D flow (in r-z coordinates) in an anisotropic medium. The results exhibit good agreement between the simulated and estimated riverbed hydraulic conductivity values. Furthermore, a set of simulations for layered, stochastically heterogeneous riverbed sediments was conducted and processed using the proposed expression to demonstrate the potential associated with measuring vertical heterogeneity in bottom sediments using a series of standpipe permeameter tests with different lengths of pipe inserted into the riverbed sediments. (C) 2016 Elsevier B.V. All rights reserved.
Indexed BySCI
Language英语
ISSN0022-1694
DOI10.1016/j.jhydrol.2016.06.061
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document TypeSCI/SSCI论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/43169
Collection历年回溯文献
Recommended Citation
GB/T 7714
Pozdniakov S. P.,Wang, P.,Lekhov, M. V.. A semi-analytical generalized Hvorslev formula for estimating riverbed hydraulic conductivity with an open-ended standpipe permeameter. 2016.
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