Author Dominguez, Justin Anthony
Title Rainfall-induced pore pressure response in slopes: A case-study comparison of one- and two-dimensional analyses
book jacket
Descript 152 p
Note Source: Masters Abstracts International, Volume: 46-01, page: 0433
Adviser: Lewis Edgers
Thesis (M.S.)--Tufts University, 2007
Seepage is governed by non-linear partial differential equations for which closed-form solutions do not exist. Therefore, analysis must be performed numerically. The use of finite-element software makes seepage modeling possible. Rainfall infiltration can be modeled using either a one-dimensional system, in which only the vertical component of flow is considered, or a two-dimensional system, in which the lateral component of flow is also considered
The objective of this thesis is to determine whether the added complexity of developing a two-dimensional model is justified by an improvement in results. In this thesis, the computed pore-water pressure responses of one- and two-dimensional flow models are compared for a slope in Japan that was subjected to artificial rainfall until failure. The work focused on the importance of accurately representing soil stratigraphy, soil hydraulic parameters, and numerical issues in creating the models. If the one-dimensional model provides similar results to the two-dimensional model, then the extra effort of developing the two-dimensional model might not be justified
I found that initial conditions, soil stratigraphy, and soil hydraulic properties all had more of an effect on seepage than whether flow was one-dimensional or two-dimensional. The one-dimensional model was easier to develop than the two-dimensional model. The two-dimensional model, however, had the advantage of showing a pore-water pressure response in the slope as a whole
School code: 0234
DDC
Host Item Masters Abstracts International 46-01
Subject Engineering, Civil
0543
Alt Author Tufts University. Civil Engineering