Journal Article

Axisymmetric analysis of multilayered thermoelastic media with application to a repository for heat-emitting high-level nuclear waste in a geological formation

Yang Yang, Maria Datcheva and Tom Schanz

in Geophysical Journal International

Volume 206, issue 2, pages 1144-1161
ISSN: 0956-540X
Published online June 2016 | e-ISSN: 1365-246X | DOI: http://dx.doi.org/10.1093/gji/ggw194
Axisymmetric analysis of multilayered thermoelastic media with application to a repository for heat-emitting high-level nuclear waste in a geological formation

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Comprehensive analytical solutions to 3-D axisymmetric problems for static response of multilayered thermoelastic media subjected to surface loads and containing sources are presented in this study. The solution strategy employs Laplace and Hankel transforms to the field variables. The problem is formulated in cylindrical coordinate system and in this coordinate system vector surface harmonics and generalized propagator matrix are introduced to find the solution for the problem for the behaviour of thermoelastic multilayered media subject to surface loads and containing heat sources. A high-order adaptive Gaussian quadrature method with continued fraction expansions is employed to approximate the integral solutions expressed in terms of semi-infinite Hankel-type integrals. It is the first time to apply the proposed solution method to investigate the behaviour of repository for heat-emitting high-level nuclear waste (HLW) in a geological formation where the HLW can be regarded as a decaying with time point heat source.

Keywords: Geomechanics; Heat flow; Heat generation and transport; Mechanics, theory, and modelling

Journal Article.  7252 words.  Illustrated.

Subjects: Geophysics ; Oceanography and Hydrology

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