الفهرس 
CHAPTER (1): INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Groundwater contamination is a type of pollution that occurs when pollutants
are released to the ground. The objective of this research is to study experimentally and numerically the effect of using equal double sheet piles with an impervious floor
on the hydraulic control of contaminant transport through groundwater.
The experimental model was a sand box model which was used to illustrate
the seepage of water and contamination transport from upstream to downstream.
The influence of penetration depths of the double sheet piles, length of the impervious floor, contamination source location, the head difference between the U.S. and D.S., and coefficient of permeability were studied to delay the contaminant’s arrival time to downstream.
Program of (GEO Studio) was used to simulate numerically the problem of
contamination transport. It was found that the relative arrival time of contamination can be significantly increased, up to 60%, when the relative length of the impervious
floor increases from 0.125 to 0.375. Hydraulic control using a double sheet pile with an impervious floor is more effective than a single sheet pile or double sheet pile without a floor in delaying contamination transport with the relative arrival time increasing by about 78% and 28%, respectively. Design charts are presented for
estimating the effect of sheet piles on the hydraulic control of groundwater contamination. from the charts, penetration depths of the double sheet piles can be selected depending on the required distribution and the chosen time for contamination
to arrive at downstream of sheet piles, length of the impervious floor, contamination source location from upstream of the first sheet pile, the head difference between U.S and D.S.