2022年第46卷第12期46声学基础声学基础cousticsFoundationA文献引用格式:牛睿.岩石破坏声发射前兆研究现状及评价指标体系构建[J].电声技术,2022,46(12):46-49,63.NIUR.Currentstatusandconstructionofevaluationindexsystemofacousticemissionprecursorsofrockfailure[J].AudioEngineering,2022,46(12):46-49,63.中图分类号:TB535文献标识码:ADOI:10.16311/j.audioe.2022.12.010岩石破坏声发射前兆研究现状及评价指标体系构建牛睿(华北水利水电大学地球科学与工程学院,河南郑州450046)摘要:在外界荷载作用下,岩石内部微裂纹不断萌生、扩展直至相互贯通,使得岩石出现变形破坏,进而引发工程事故。对此,阐述基于声发射技术开展的岩石破坏前兆方向的研究进程。先论述学者基于声发射时域参数开展的岩石破坏前兆信息的研究进程,进而论述学者通过声发射b值、分形维数、熵值及损伤变量等统计参数开展的岩石破坏前兆信息的研究进程。在此基础上,提出全新的岩石破坏声发射多统计参数评价指标体系的构建步骤,为岩石工程灾变预警体系的建立提供参考。关键词:岩石破坏;声发射;时域参数;统计参数;评价指标体系CurrentStatusandConstructionofEvaluationIndexSystemofAcousticEmissionPrecursorsofRockFailureNIURui(CollegeofGeosciencesandEngineering,NorthChinaUniversityofWaterResourcesandElectricPower,Zhengzhou450046,China)Abstract:Undertheactionofexternalload,microcrackinsidetherockcontinuetogerminate,expanduntiltheypenetrateeachother,causingdeformationanddamagetotherock,whichinturncausesengineeringaccidents.Thispaperdescribestheresearchprocessofrockfailureprecursorbasedonacousticemissiontechnology.Firstly,theresearchprocessofrockfailureprecursorinformationcarriedoutbyscholarsthroughthetimedomainparametersofacousticemissionisdiscussed.Furthermore,theresearchprocessofrockfailureprecursorinformationcarriedoutbyscholarsthroughstatisticalparameterssuchasacousticemissionb-value,fractaldimension,entropyvalue,anddamagevariablewasanalyzed.Onthisbasis,anewconstructionstepofrockfailureacousticemissionmulti-statisticalparameterevaluationindexsystemisproposed,whichprovidesreferencefortheestablishmentofrockengineeringcatastropheearlywarningsystem.Keyw...