Micro-macro evolution of mechanical behaviors of thermally damaged rock:A state-of-the-art review

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外文摘要：The influence of thermal damage on macroscopic and microscopic characteristics of different rocks has received much attention in the field of rock engineering.When the rocks are subjected to thermal treatment,the change of macroscopic characteristics and evolution of micro-structure would be induced,ultimately resulting in different degrees of thermal damage in rocks.To better understand the thermal damage mechanism of different rocks and its effect on the rock performance,this study reviews a large number of test results of rock specimens experiencing heating and cooling treatment in the laboratory.Firstly,the variations of macroscopic behaviors,including physical parameters,mechanical parameters,thermal conductivity and permeability,are examined.The variations of mechanical parameters with thermal treatment variables(i.e.temperature or the number of thermal cycles)are divided into four types.Secondly,several measuring methods for microstructure,such as polarizing microscopy,fluores-cent method,scanning electron microscopy(SEM),X-ray computerized tomography(CT),acoustic emission(AE)and ultrasonic technique,are introduced.Furthermore,the effect of thermal damage on the mechanical parameters of rocks in response to different thermal treatments,involving temperature magnitude,cooling method and thermal cycle,are discussed.Finally,the limitations and prospects for the research of rock thermal damage are proposed.

外文关键词：

Thermal damageMacroscopic characteristicsMicrostructure evolutionTemperature magnitudeCooling methodThermal cycle

作者：

Yunmin Wang、Jun Peng、Linfei Wang、Chuanhua Xu、Bibo Dai

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作者单位：

State Key Laboratory of Safety and Health for Metal Mines,Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.,Maanshan,243000,China

基金：

National Key Research and Development PlanNatural Science Foundation of Anhui ProvinceKey Research and Development Plan of Anhui Province

项目编号：

2022YFC29057002208085ME1202022m07020001

出版年：

2024

DOI：

10.1016/j.jrmge.2023.11.012

岩石力学与岩土工程学报(英文版)

中国科学院武汉岩土力学所中国岩石力学与工程学会武汉大学

岩石力学与岩土工程学报(英文版)

CSTPCD

影响因子：0.404

ISSN：1674-7755

年,卷(期)：2024.16(7)