岩石破裂过程声发射与红外温变特征对比

金属矿山 ›› 2026, Vol. 55 ›› Issue (8): 78-.

岩石破裂过程声发射与红外温变特征对比

倪　强^1,2　高　祥^2,3　葛向洲⁴

1.中钢集团马鞍山矿山研究总院股份有限公司,安徽马鞍山 243000;2.金属矿山开采安全与灾害防治全国重点实验室, 安徽马鞍山 243000;3.安徽理工大学矿业工程学院,安徽淮南 232000;4.池州市银龙矿业集团有限公司,安徽池州 247000

出版日期:2026-08-15 发布日期:2026-09-04
通讯作者: 高　祥(1990—),男,讲师,博士。
作者简介:倪　强(1993—),男,工程师。
基金资助:
国家重点研发计划项目(编号:2024YFC3013801);深地国家科技重大专项项目(编号:2024ZD1003802)。

Comparison of Acoustic Emission and Infrared Temperature Variation Characteristics in Rock Fracture Process

NI Qiang^1,2GAO Xiang^2,3GE Xiangzhou⁴

1.Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.,Maanshan 243000,China; 2.State Key Laboratory of Metal Mine Mining Safety and Disaster Prevention and Control,Maanshan 243000,China; 3.School of Mining Engineering,Anhui University of Science and Technology,Huainan 232000,China; 4.Chizhou Yinlong Mining Group Co.,Ltd.,Chizhou 247000,China

Online:2026-08-15 Published:2026-09-04

摘要/Abstract

摘要： 多物理场信息融合是岩体失稳预警的研究热点。以红外温度突变比率(ITMR)、声发射突变率(AEMR) 为量化指标,对岩石破坏过程不同阶段的声发射和红外温变特征进行了试验研究。结果表明:试件加载过程中的切线模量呈现出“快速上升—平稳升降—快速下降”的阶段性特征,利用平稳升降阶段极大值确定的起裂强度为83.39 MPa,约为峰值强度的53%;切线模量变化速率随着应变的增加,呈现出“快速下降—平稳下降—快速下降”的阶段性特征,其中平稳下降和快速下降之间存在明显的拐点,根据拐点确定的损伤强度为139.67 MPa,约为峰值强度的 89%;以起裂强度、损伤强度为界,试件变形过程可被划分为压密—弹性阶段Ⅰ、裂纹萌生与稳定扩展阶段Ⅱ、裂纹不稳定扩展破坏阶段Ⅲ。AEMR、ITMR异常存在明显的互补关系;在阶段Ⅰ,AEMR、ITMR变化较为稳定,均表现为小范围内平稳波动;在阶段Ⅱ,AEMR表现为剧烈的大幅度异常跳变频繁出现,可作为岩石破坏的前期前兆,而ITMR变化平稳;在阶段Ⅲ,AEMR先有大幅度跳动异常,随后达到平静期,而ITMR大幅跳变异常较为明显,该异常可以作为岩石失稳的后期前兆。研究结果对岩土工程失稳的红外和声发射联合预警具有促进意义。

关键词: 岩石失稳　, 红外温度突变比率　, 声发射突变率　, 灾变预警

Abstract: Multi-physical field information fusion is a research hotspot of rock mass instability early warning.The charac teristics of acoustic emission and infrared temperature change in different stages of rock failure process were studied by using infrared temperature mutation ratio (ITMR) and acoustic emission mutation rate (AEMR) as quantitative indexes.The results show that the tangent modulus in loading process of the specimen presents the stage characteristics of “rapid rise-steady rise rapid decline”.The crack initiation strength determined by the maximum value of the steady rise and fall stage is 83.39 MPa, which is about 53% of the peak strength.With the increase of strain,the change rate of tangent modulus shows the stage char acteristics of “rapid decline-steady decline-rapid decline”.There is an obvious inflection point between steady decline and rap id decline.According to the inflection point,the damage strength is 139.67 MPa,which is about 89% of the peak strength. Taking the crack initiation strength and damage strength as the boundary,the deformation process of the specimen can be divid ed into compaction-elastic stage Ⅰ,crack initiation and stable propagation stage Ⅱ,and crack unstable propagation failure stage Ⅲ.There is a clear complementary relationship between AEMR and ITMR abnormalities.In stage Ⅰ,the changes of AE MR and ITMR are relatively stable,showing stable fluctuations in a small range.In stage Ⅱ,AEMR shows dramatic large-scale abnormal jumps frequently,which can be used as a precursor to rock failure,while ITMR changes smoothly.In stage Ⅲ,AEMR first has a large jump anomaly,and then reaches a quiet period,while ITMR large jump anomaly is more obvious,which can be used as a late precursor of rock instability.The research results are of great significance for the joint early warning of infrared andacousticemissiontopromotetheinstabilityof geotechnical engineering.

Key words: rockinstability,infraredtemperaturemutationratio,acousticemissionmutationrate,catastrophicwarning

中图分类号:

TU458

倪　强, 高　祥, 葛向洲, . 岩石破裂过程声发射与红外温变特征对比[J]. 金属矿山, 2026, 55(8): 78-.

NI Qiang, GAO Xiang, GE Xiangzhou, . Comparison of Acoustic Emission and Infrared Temperature Variation Characteristics in Rock Fracture Process[J]. Metal Mine, 2026, 55(8): 78-.

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