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PERFORMANCE OF TRENCH DRAINS WITH TIME USING FINITE ELEMENTS
Author(s) -
Kumar Jyant
Publication year - 1997
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/(sici)1096-9853(199707)21:7<485::aid-nag881>3.0.co;2-k
Subject(s) - phreatic , trench , impervious surface , geology , geotechnical engineering , homogeneous , drawdown (hydrology) , isotropy , permeability (electromagnetism) , dimensionless quantity , finite element method , layer (electronics) , mechanics , materials science , aquifer , engineering , structural engineering , groundwater , mathematics , composite material , genetics , ecology , physics , combinatorics , quantum mechanics , membrane , biology
Peformance of rectangular trench drains penetrating fully in a layer of homogeneous and isotropic soil mass down to an underlying impervious base with time has been assessed using the finite element method. Non‐dimensional charts have been developed comprehensively to establish the successive positions of a phreatic surface with the passage of time for any given values of permeability of soil and its specific yield. The effect of spacing to depth ratios of drains on their performance has been examined in detail. The rate of downward movements of the phreatic surface decreases with time as well as with increases in the spacing of drains. The spacing affects considerably the magnitudes of drawdown at distant locations from the drains, whereas close to the drains, its effect becomes insignificant. © 1997 John Wiley & Sons, Ltd.