Quantification of the hydraulic diffusivity of a bentonite‐sand mixture using the water head decrease measured upon sudden flow interruption

Abstract

This paper presents a new modelling approach to quantify the hydraulic diffusivity of low-permeability unconsolidated porous media under confined saturated-flow condi-

Experimental Investigation of the Effects of Porosity, Hydraulic Conductivity, Strength, and Flow Rate on Fluid Flow in Weakly Cemented Bio-Treated Sands

“…Applications in which fluid flow in porous media is the underlying mechanism include hydraulic barriers or fluid injection for the remediation of groundwater contamination and water decontamination, flow through leaching to groundwater, artificial ground freezing to contain groundwater, CO 2 sequestration, groundwater drainage through the fluidisation of sands, or any other changes in groundwater level during recharge or discharge. Other examples of fluid injection events into an aquifer include disposal, managed aquifer recharge (MAR), aquifer storage and recovery (ASR), and the transportation of various fluids in the subsurface [1][2][3][4][5][6][7][8].…”

“…The majority of experiments that examine the effects of flow at the grain scale and any potential alterations of the characteristics of the soil-groundwater system are usually conducted in small size experiments at the mesoscale [7,[13][14][15][16]. Transient flow problems are usually conducted in a similar scale [5,8,17].…”