Numerical analysis of thermo-hydromechanical process related to deep geological radioactive repository  

作　　者：Jian-Fu Shao Zhan Yu Zaobao Liu Minh-Ngoc Vu Gilles Armand 

机构地区：[1]University of Lille,CNRS,EC Lille,LaMcube,UMR9013,59000 Lille,France [2]Institut Universitaire de France(IUF),France [3]Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines,College of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China [4]Andra,Chatenay Malabry,France

出　　处：《Deep Resources Engineering》2024年第1期13-26,共14页深部资源工程（英文）

基　　金：supported by the French National Agency for radioactive waste management(ANDRA)and the National Natural Science Foundation of China(No.12202099).

摘　　要：This paper addresses numerical analysis of thermo-hydromechanical processes in the context of deep geological disposal of radioactive waste.The emphasis is put on modeling of damaged zones induced by excavation,pore pressure and temperature changes.The theoretical background of thermo-poroelasticity for saturated porous media is first recalled.The framework for modeling initiation and evolution of induced cracks is then presented by using a variational approach of phase-field method.A specific model with two crack phase fields and considering thermo-hydromechanical interaction is proposed.A particular attention is paid on the description of shear cracks.The proposed model is implemented in the standard finite element method.An example of application is finally presented on the analysis of thermo-hydromechanical responses and cracked zones evolution around a typical disposal repository in the context of French concept for high level waste disposal.

关 键 词：Radioactive waste Geological disposal Thermo-hydromechanical coupling Callovo-oxfordian claystone Damage and cracking Phase-field method 

分 类 号：TL9[核科学技术]