黏土岩温度–渗流–应力耦合作用的长期力学特性研究若干进展

doi:10.13722/j.cnki.jrme.2020.0070

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Abstract The geological repository of nuclear waste is in a variety of complex environments for a long time，and the safe，stable and efficient construction and operation of the geological repository usually need to consider the long-term coupling effect of thermo-hydro-mechanical(T-H-M) fields. Based on the long-term mechanical properties of clay rocks under multi-field coupling，this paper first summarizes the long-term mechanical test results and shortcomings of clay rocks under the thermo-hydro-mechanical coupling condition at home and abroad，mainly including the influence of HM and THM coupling on the permeability properties of clay rocks，and TM and THM coupling long-term mechanical properties of clay rocks. In the second place，the influence mechanism of temperature on the micro structure characteristics of clay rocks is discussed starting from the micro phenomena. Based on the above understanding，the THM coupling creep mechanical model of clay rocks and its applicability are proposed. In the meantime，the research results of the authors' team on the long-term mechanical properties of THM coupling of clay rocks are introduced. It is pointed out that the long-term mechanical properties of Boom Clay are regulated by temperature，pore pressure，stress and anisotropy，etc. Finally，the future research directions of clay rocks THM coupling that should be focused on are discussed.

Key words： rock mechanics clay rocks thermo-hydro-mechanical coupling micro mechanism long-term mechanical experiment rheological constitutive model

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	Articles by authors
	CHEN Weizhong1
	LU Chen1
	2
	YU Hongdan1
	LI Fanfan1
	LEI Jiang1
	MA Yongshang1
	LI Honghui3

Cite this article:

CHEN Weizhong1,LU Chen1,2, et al. Progress in long-term mechanical properties of clay rocks under thermo-hydro-mechanical coupling conditions[J]. , 2021, 40(2): 233-247.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2020.0070 OR https://rockmech.whrsm.ac.cn/EN/Y2021/V40/I2/233

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