Table of Content

Open Access

ABSTRACT

Thermo-hydraulic-mechanical analysis of deep geological disposal of high level nuclear waste

F. ZHANG, S. ZHANG, Y. L. XIONG, H. NAKANO, T. NISHIMURA

The International Conference on Computational & Experimental Engineering and Sciences 2011, 17(2), 61-62. https://doi.org/10.3970/icces.2011.017.061

Abstract

In deep geological disposal for high-level radioactive waste (HLW), one of the most important factors is to study the thermo-hydraulic-mechanical (THM) behavior of natural barrier that consists of host rock, most made from sedimentary rock or granite. In this paper, based on a new simple thermo-elasto-viscoplastic model of soft rock proposed by Zhang & Zhang (2009), a program of finite element method (FEM) has been developed to simulate the above-mentioned THM behavior of geological disposal. 2D and 3D analyses are conducted to estimate long-term stability of the host rock. The men-made barrier, usually composed of buffer material of bentonite, metal container and glass-mixed nuclear waste, are assumed to be elastic in their mechanical behavior. It is known from the analyses that thermal conductivity plays a very important role in the heat-induced stress-strain field. In some circumstances, long-term instable state of the host rock might occur if the heat generated from the nuclear waste is not properly treated.

Cite This Article

ZHANG, F., ZHANG,, S., NAKANO, H., NISHIMURA, T. (2011). Thermo-hydraulic-mechanical analysis of deep geological disposal of high level nuclear waste. The International Conference on Computational & Experimental Engineering and Sciences, 17(2), 61–62.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
  • 718

    View

  • 548

    Download

  • 0

    Like

Share Link

WeChat scan