安全与环境工程2025，Vol.32Issue(4)：105-112,8.DOI:10.13578/j.cnki.issn.1671-1556.20240846
基于DIC技术的多岩层损伤演化物理模型试验
Experimental study on the damage evolution physical model of multiple rock strata based on DIC technology
摘要
Abstract
The study of rock damage research has been one of the hot topics in the field of rock mechanics in recent years.Digital image correlation(DIC)technology has the advantages of non-contact,good adaptability,high accuracy,etc.It is widely used in rock damage test research.To study the degree of rock damage and the evolution process,based on indoor uniaxial compression test and DIC technology,a physical model for multi-layer sandstone under vertical uniform loading was established.The whole process of crack generation-expansion-penetration,the characteristics of sandstone fracture section,and the displacement evolution law of multi-layer sandstone under vertical uniform loading were analyzed.Results show that:① The multi-layer sandstone under vertical uniform loading,tensile failure occurs first in the middle of the bottom sandstone,and then shear failure occurs on both sides of the sandstone.② The fracture surface of the sandstone has obvious characteristics,i.e.,the left and right fracture surfaces of the sandstone have obvious friction marks,which is shear damage;the middle fracture surface of the sandstone does not have any friction marks,which is tensile damage.③ Vertical uniform loading of sandstone,sandstone horizontal and vertical displacement time change process is mainly divided into three stages:first,horizontal displacement change is large,the sandstone is in the process of tensile damage,and then the change of horizontal displacement between the measurement points is very small,the sandstone tensile damage;then,vertical displacement of the measurement points grows slowly,and the tensile damage stage of the analysis of the law is basically the same,the sandstone is in the stage of development of the shear crack;finally,the shear crack passes through,and the rock mass on both sides of the crack undergoes shear misalignment,and the vertical displacement of the measurement point increases rapidly.The research results help to understand the damage mechanism of multilayer sandstone from a new perspective.关键词
岩石损伤演化/数字图像相关(DIC)技术/物理模型试验/岩石裂缝演化规律Key words
rock damage evolution/digital image correlation(DIC)technology/physical model experiment/rock fracture evolution laws分类
资源环境引用本文复制引用
闫宪洋,张全,王超,高伟明,张泉,邹俊鹏,汪漫,田伟杰..基于DIC技术的多岩层损伤演化物理模型试验[J].安全与环境工程,2025,32(4):105-112,8.基金项目
山东能源集团2022年揭榜挂帅项目(SNKJ2022A01-R26) （SNKJ2022A01-R26）
国家自然科学基金青年科学基金项目(42307191) （42307191）
国家自然科学基金面上项目(42177152) （42177152）
湖北自然科学基金面上项目(2025AFB485) （2025AFB485）
