@inproceedings{fdi:010093233,
  title = {{I}nfiltration measurements and modeling in a soil-vertical drain system},
  author = {{H}ammecker, {C}laude and {S}iltecho, {S}. and {A}ngulo-{J}aramillo, {R}. and {L}assabatere, {L}. and {R}obain, {H}enri and {W}iniarski, {T}. and {T}relo-ges, {V}. and {S}uvannang, {N}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}evere water logging problems occur in rubber tree plantations in {NE} {T}hailand during the rainy season and create adverse conditions for the development of the trees. {M}oreover this situation contributes to a waste of scarce rainfall

and reduce it's efficiency, as 50% is lost by hypodermic water flow and superficial runoff. {T}he presence of a clayey layer at 1m depth with low permeability, hindering the water infiltration that led to the occurrence of a perched

water table. {I}n order to drawdown the water level of the perched water table and to increase the efficiency of the rainfall by storing water in the underlying bedrock a vertical drainage system was developed. {I}n order to

test the feasibility of this solution we chose to use the numerical modelling of water flow in soil and to test different set-ups (size and spacing between the drains). {T}he objective of this study was to characterise the hydraulic

properties and of the soil-drain system in a rubber tree plantation. {T}herefore an experiment was set up in rubber tree plantation at {B}an {N}on {T}un, {K}hon {K}aen {P}rovince ({N}ortheast of {T}hailand). {I}nfiltration experiments around the

vertical drains with single ring of 1m diameter, were conducted in three different locations to measure infiltration rate. {T}he infiltration experiments were also monitored with two complementary geophysical methods ({ERT} and

{GPR}) to asses the progression ans at the geometry of the wetting front. {T}he model {H}ydrus2{D} was used to adjust the computed infiltration curves and water level in the drain to the experimental data, by fitting effective unsaturated

hydrodynamic parameters for the drain. {T}hese parameters were used to calibrate the model and to perform further predictive numerical simulations.},
  keywords = {{THAILANDE}},
  numero = {},
  pages = {{EGU}2016--5833 [1 ]},
  booktitle = {},
  year = {2016},
  URL = {https://www.documentation.ird.fr/hor/fdi:010093233},
}