In this study, four types of grout were developed to evaluate the effect of grouting of saturated riprap layers on ground water flow. The developed types of grout are divided into a quick-setting type and a general-type, and also into high and low viscosities. A number of grout tests were performed in a model acrylic chamber, 0.4 m in diameter and 2.0 m in length, for visual observation of inje...

The VMPC function is a combination of triple permutation composition and integer addition. It differs from a simple triple permutation composition with one integer addition operation performed on some of the elements of the permutation. The consequence of this addition operation is corruption of cycle structure of the transformed permutation the fundamental source of the function's resistance t...

Keywords: Modeling. Flow in porous media. Flow in aquifers. Transport in porous media. Saturated flow. Darcy's law. Dispersion. Variable density flow and transport.

Preferential flow through macropores and other structural voids in field soils most often occurs at or near saturation. Our earlier research revealed significant differences in the value of the saturated hydraulic conductivity (A's) of a glacial till soil in central Iowa when obtained with five different measurement techniques. The five techniques included one laboratory constant-head penneamet...

For the numerical simulation of flow and transport through a vertical cross-section of a heterogeneous soil, the combined flow and transport model described by Yeh et al. (1993) (henceforth referred to as "MMOC2") is used and modified for the purposes of this study. This chapter summarizes the main features of MMOC2 and the conceptual changes from the description in Yeh et al. (1993). For the d...

25 A numerical study, based on a density-dependent variably saturated groundwater flow model, 26 was conducted to investigate flow and salt transport in a near-shore aquifer under intensified 27 wave conditions caused by offshore storms. Temporally varying onshore hydraulic gradients due 28 to wave set-up were determined as the seaward boundary condition for the simulated aquifer. 29 The result...