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099		9	_aAIT Thesis no.GT-81-09
100			_aKabilamany, Kandasamy
245		2	_aA finite element scheme for the analysis _bof influence of drainage and grout curtain on seepage under dam foundation
260			_aBangkok : _bAsian Institute of Technology, _c1982
300			_avi, 52 p
440		0	_aAsian Institute of Technology. Thesis ; _vno. GT-81-09
490	1		_aThesis ; _vno. GT-81-09
502			_aThesis (M. Eng.) - Asian Institute of Technology, 1982
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
520			_aThis work presents a highly flexible finite element scheme to solve the unconfined seepage problems with special reference to anisotropic nonhomogeneous dams containing complex geometry and material properties. A new finite element scheme has been established to accommodate to the change in position of the free surface after each iteration when solving the overall finite element equations in the above mentioned cases. The proposed scheme has been verified by solving the unconfined seepage problem for a homogeneous isotropic dam and comparing the various field variables such as elevation of the exit point, flows, pore pressures, velocities etc. with the values reported by ISAACS, BAALAH and BOOKER (1980) ; which were obtained by employing six different methods proposed by several researchers. This shows that the scheme presented in this thesis gives the values of the field variables to the required accuracy. The scheme has then been employed to solve a real case of a dam containing a clay core, downstream drainage and a grout curtain. A complete set of computer programs to solve these problems has been developed by the author in APL language. This enables the interaction of the graphical with the numerical outputs in the terminal screen even in the intermediate process of calculations. Hence, errors introduced due to some irregularities can be rectified easily. Extending the scheme established for 2-D case to 3-D, the complete formulation for 3-D seepage with free surface for nonhomogeneous isotropic cases is given by the author. However, coding of the computer program is left to the user.
650		0	_aSeepage
650		0	_aDams _xFoundations
700	1		_aTomiolo, Andrea, _eChairperson
700	1		_aBalasubramaniam, A.S., _eExamination Committee
700	1		_aOhta, Hideki, _eExamination Committee
710	2		_aRoyal Netherlands Government,
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B21222
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