Stress and pore pressure in saturated clay subjected to heat from radioactive waste: a numerical simulation

TitleStress and pore pressure in saturated clay subjected to heat from radioactive waste: a numerical simulation
Publication TypeJournal Article
Year of Publication1992
Authors, and T Hueckel
JournalCanadian Geotechnical Journal
Volume29
Start Page1087
Issue6
Pagination1087 - 1094
Date Published01/1992
Abstract

Some effects of temperature increase due to the emplacement of radioactive waste on the mechanical and hydraulic behavior of saturated clays are studied numerically. A mass-transfer model is adopted which simulates a possible degeneration of adsorbed water into bulk water at temperatures up to 150°C. In contrast with a previous paper by the authors the heat output decreases with time to realistically simulate the effect of nuclear waste. Numerical results show that in the vicinity of the line heat source, a much lower value of excess pore pressure and faster propagation of the excess pore-pressure front are obtained because of the substantial increase in permeability arising from the adsorbed water degeneration at elevated temperatures. -from Authors

DOI10.1139/t92-125
Short TitleCanadian Geotechnical Journal