文献类型：期刊文献

英文题名：Thermally Induced Fault Reactivation Controlled by Heating Rate: Implications for Long-Term Safety Assessment of Deep Geological Repository

作者：Zhuang, Li Wang, Lei Sun, Changlun Yoon, Jeoung Seok Min, Ki-Bok

第一作者：Zhuang, Li

通信作者：Wang, L[1]

机构：[1]Chongqing Univ, Sch Resources & Safety Engn, Chongqing, Peoples R China;[2]GFZ Helmholtz Ctr Geosci, Potsdam, Germany;[3]Guizhou Inst Technol, Sch Min Engn, Guiyang, Guizhou, Peoples R China;[4]DynaFrax UG Ltd, Potsdam, Germany;[5]Seoul Natl Univ, Coll Engn, Dept Energy Resources Engn, Seoul, South Korea;[6]Seoul Natl Univ, Res Inst Energy & Resources, Coll Engn, Seoul, South Korea

第一机构：Chongqing Univ, Sch Resources & Safety Engn, Chongqing, Peoples R China

通信机构：corresponding author), GFZ Helmholtz Ctr Geosci, Potsdam, Germany.

年份：2025

卷号：52

期号：18

外文期刊名：GEOPHYSICAL RESEARCH LETTERS

收录：;EI(收录号：20253919222324);Scopus(收录号：2-s2.0-105016744255);WOS:【SCI-EXPANDED(收录号:WOS:001574515700001)】；

基金：The experiments were conducted at Korea Institute of Civil Engineering and Building Technology (KICT), and funded by KICT International Collaborative Research Program under Grant 20230361-001. L. Zhuang was financially supported under Grant CSTB2024YCJH-KYXM0092 and startup funding from the National Natural Science Foundation of China. K.-B. Min was financially supported by the Innovative Technology Development Program for High-level waste management of the National Research Foundation of Korea (NRF) funded by the Korean government (Ministry of Science and ICT, MSIT) (Grant 2021M2E3A2044264). The authors are grateful to Georg Dresen for helpful comments on the first version of the manuscript. We thank two anonymous reviewers and the Editor for providing constructive comments that have substantially improved the present study. Open Access funding enabled and organized by Projekt DEAL.

语种：英文

外文关键词：heating rate; fault reactivation; thermally induced stick-slip events; thermal stress; deep geological repository

摘要：Heat from radioactive decay of nuclear waste disposal in deep geological repositories may thermally load the host rocks containing fractures and faults, potentially causing fault reactivation and induced seismicity. To investigate the effect of heating rate on stability of thermally induced fault slip, we conducted three experiments of thermally induced fault reactivation on a granite sample containing an inclined sawcut fracture under conditions of varying heating rates spanning two orders of magnitude. We find that the spatiotemporal evolution of temperature and the resultant thermal stress control the timing and size of induced stick-slip events. A fast heating rate induces earlier but smaller stick-slip events. In contrast, a slow heating rate promotes a uniform distribution of temperature and thermal stress, facilitating larger stick-slip events that occur later and exhibit higher apparent frictional strength. Our findings highlight the importance of controlling heating rates in deep geological repositories to mitigate seismic risks.