Thermo-hydro-mechanical couplings in radioactive waste disposal

Authored by: A. Millard

Rock Mechanics and Engineering

Print publication date:  June  2017
Online publication date:  June  2017

Print ISBN: 9781138027633
eBook ISBN: 9781315364223
Adobe ISBN:

10.1201/9781315364223-21

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Abstract

This chapter presents some of the main issues related to the thermo-hydro-mechanical couplings which can be encountered in the framework of radioactive waste disposal problems and their modeling. First, the different kinds of radioactive wastes are briefly reviewed, and the deep underground disposal solution, based on a multi-barrier concept, is detailed. With regards to the rock mechanics issue, the main processes which can occur at short and long term are explained. Then, the theoretical formulation underlying the thermo-hydro-mechanical studies are fully detailed and some indications on numerical implementation are given. In addition, a specific hydro-mechanical formulation related to a well identified fracture is exposed. Finally, in order to appraise the influence of the various thermo-hydro-mechanical couplings, the study of the short term behavior of a generic high level wastes repository is proposed as an illustration of the previous developments.

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