Research progress on multi-scale damage of rock
HE Fengzhen
LI Guichen
KAN Jiaguang
XU Xingliang
FENG Xiaowei
SUN Yuantian
Abstract：Rock damage and rupture is a multi-scale chain damage rupture process from microscopic to mesoscopic to macroscopic.It is essential to clarify the damage characteristics of rock at different scales and establish the quantitative relationships of multi-scale damage in complex environments.In recent years,researchers have carried out a lot of research work on the multi-scale damage mechanism of rock in complex environments,and achieving certain research results.This paper systematically reviews the research progress of multi-scale damage of rock from three aspects:the characteristics of multi-scale damage of rock,identification and quantitative characterization of damage at different scales,and the quantity-response relationship of multi-scale damage.Firstly,the microscopic,mesoscopic and mac-roscopic damage characteristics of rock were summarized,and the multi-scale cumulative damage fracture process of rock was analyzed.Secondly,based on the characteristics of multi-scale damage of rock,the identification methods of microscopic,mesoscopic and macro-scopic damage of rock and the quantitative characterization methods of damage at different scales were systematically reviewed,and the methods for determining the quantity-response relationship between microscopic,mesoscopic and macroscopic damage of rock were ana-lyzed.Finally,the deficiencies in the research of rock multi-scale damage were analyzed from the aspects of multi-scale damage identifica-tion,quantitative characterization,and determination of quantity-response relationship.Proposing to carry out the research on rock multi-scale damage from the following aspects:developing rock micro-meso damage identification equipment highly integrated with the envir-onment,establishing a collaborative intelligent quantitative characterization method for multi-scale damage in the three-dimensional space of rock,constructing a complete quantity-response relationship for micro-meso-macro rock damage,and enriching and innovating the the-ory of multi-scale rock damage.
Keywords：rock mechanicsmulti-scaledamage identificationquantitative characterizationquantity-response relationship
Publication Date：2024-10-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：21( 33-53 )