A semi-analytical generalized Hvorslev formula for estimating riverbed hydraulic conductivity with an open-ended standpipe permeameter
A semi-analytical generalized Hvorslev formula for estimating riverbed hydraulic conductivity with an open-ended standpipe permeameter
复制标题
用开放式立管渗透仪估算河床导水率的半解析广义 Hvorslev 公式
DOI:
10.1016/j.jhydrol.2016.06.061
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发表时间:
2016-09
影响因子:
6.4
通讯作者:
Lekhov, Mikhail V.
中科院分区:
文献类型:
--
作者:
Wang, Ping;Wang, Ping;Lekhov, Mikhail V.;Lekhov, Mikhail V.
The 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 (inr-zcoordinates) 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.
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影响因子:
6.4
作者:
M. Shanafield;P. Cook
通讯作者:
M. Shanafield;P. Cook
影响因子:
2.8
作者:
Min, Leilei;Yu, Jingjie;Liu, Changming;Zhu, Juntao;Wang, Ping
通讯作者:
Wang, Ping
影响因子:
6.4
作者:
Xunhong Chen;Jinxi Song;Wenke Wang
通讯作者:
Xunhong Chen;Jinxi Song;Wenke Wang
DOI:
10.1007/s002540000172
发表时间:
2000-11
期刊:
Environmental Geology
影响因子:
--
作者:
Xunhong Chen
通讯作者:
Xunhong Chen
影响因子:
6.4
作者:
Wang, Ping;S. P. Pozdniakov;V. M. Shestakov
通讯作者:
V. M. Shestakov