03560nas|a2200409 i 4500 20260818114341.0 191199s1999 th uu m rtt 00| a1eng d .b1176501x AIT Thesis no. GE-98-21 Runglawan Rachan The formulation of a modified factor to increase continuity between unsaturated-saturated seepage analyses Bangkok : Asian Institute of Technology, 1999 59 leaves Thesis no. GE-98-21 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering Thesis (M.Eng.) - Asian Institute of Technology, 1999 This study presents the consideration on the physical meaning of the parameters associated with unsaturated-saturated seepage analysis. Recently, unsaturated-saturated seepage analysis method formulated by Finite Element Method (FEM) has been applied for various type of actual projects such as tunnel construction in urban area, in order to investigate the influence of ground water behavior to surrounding environment. In general, the accuracy of analysis is heavily dependent on how to evaluate input parameters involved in the governing equation. Since the governing equation of unsaturated-saturated seepage analysis is a nonlinear differential form, the problem mentioned above is especially serious. From literature survey, it is pointed out that the discussion how the parameters in an unsaturated region are associated with those in a saturated region has not been made sufficiently. Therefore, this study aims to make the physical meaning of parameters involved in unsaturated-saturated seepage analysis theory obvious, and propose the methodology to evaluate input parameters reasonably. Especially, the relative continuity of parameters between a saturated region and an unsaturated region is focused on. To cope with the problem related to the relative continuity of parameters, the adoption of modified factor is proposed. Through case studies by using FEM code, the effectiveness of modified factor proposed in this study is investigated and concluded that The methodology proposed in this study makes the convergence of iterative calculation procedure faster. Essential, it means timesaving of computational time. Seepage Ohtsu, Hiroyasu, Chairperson Balasubramaniam, A.S., Examination Committee Der Guey, Lin, Examination committee Asian Institute of Technology Partial Scholarship, Scholarship donor Asian Institute of Technology. Thesis ; no. GE-98-21 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B12519 .b1176501x mnait y 240420 0 991119 m a y 4 mnait mnait mnarc 20 40 Barcode : 30050120717151 CREATED : 1998-06-22 RECORD # : i12163788 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120717136 CREATED : 1998-06-22 RECORD # : i1216379x LPATRON : 1015152 LCHKIN : 2001-08-25 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 2 TOT RENEW : 0 Barcode : 30050160080791 CREATED : 2016-05-17 RECORD # : i12979922 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 46805 46805 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no. GE-98-21 30050120717151 2026-08-18 11:43:41 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no. GE-98-21 30050120717136 2026-08-18 11:43:41 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. GE-98-21 30050160080791 2026-08-18 11:43:41 1 2026-08-18 40