Velocity-Free Localization Methodology for Acoustic and Microseismic Sources

Longjun Dong is Professor and Director of Department of Safety Science and Engineering, Central South University, China. His research interests include rock mechanics, engineering seismicity, and applied acoustics. He obtained Ph.D., M.Sc., and B.Sc. in 2013, 2009, and 2007, respectively. He was appointed as Professor, Associate Professor, and Lecturer at Central South University in 2017, 2015, and 2013, respectively. He was invited as Research Assistant at Australian Center for Geomechanics (ACG) from 2012 to 2013. He presided over 15 projects of the National Key Research and Development Program, International Cooperation and Exchange of the National Natural Science Foundation of China (NSFC), etc. He is Recipient of the NSFC for Excellent Young Scholars (2018), the Young Elite Scientist sponsored by the China Association for Science and Technology (CAST) (2016), the leading talent of Science and Technology Innovation of Hunan Province (2021), and the Distinguished Young Scholars Fund of Hunan Province (2018). He has 161 publications in peer-reviewed journals, with 4803 citations and 41 h-index in Google Scholar, and has 48 Chinese patents. He is individual ISRM Member and IEEE Senior Member. He was invited to present over 10 Keynote Presentations and Invited Presentation at international conferences. He is the Associate Editor of the Journal of the Acoustical Society of America Express Letter, and Shock and Vibration; Editorial Board Member of Safety Science (Elsevier), Soils and Foundations (Elsevier, the official journal of the Japanese Geotechnical Society), Scientific Reports (Springer nature), and International Journal of Distributed Sensor Networks; Editorial Advisory Board Member of Archives of Mining Sciences (established by the Polish Academy of Sciences since 1956), and Guest Editor of Induced Seismicity in Scientific Reports. In 2020 and 2021, he was successively selected into the list of "highly cited Chinese researchers (Elsevier)" and "Top 2% scientists in the world (Stanford University)". Xibing Li is a Professor of Central South University, China. He is vice chairman of the Chinese Society of Rock Mechanics and Engineering, and vice chairman of the National Group of the International Society of Rock Mechanics (ISRM). Prof. Li is an outstanding expert in rock dynamics and mining engineering. He is the obtainer of National Outstanding Youth Funds (1996), distinguished professor of Changjiang Scholars Program of the Ministry of Education (2000), nomination of the National Top Ten Outstanding Scientific and Technological Workers. He has been engaged in teaching and scientific research in the field of mining and geotechnical engineering, presiding over more than 10 projects such as key projects of the National Natural Science Foundation of China, National Natural Science Funds for Distinguished Young Scholar, National Key Research and Development program, State Key Development Program of Basic Research of China, National High Technology Research and Development Program of China, etc. He has made important achievements in the theory and technology of resource mining with hidden danger, waste free mining, seabed bedrock mining, and deep hard rock mining. He has successively won 4 National Science and Technology Progress Awards, 13 first class and above awards Ministerial and Provincial-Level Science and Technology Awards. He has more than 40 national invention patents, 8 monographs, more than 400 papers included in SCI, as well as more than 500 papers included in EI have been published, with 60 h-index in Web of Science. He has supervised more than 60 doctors, one of whom was nominated for the National Excellent Doctoral Thesis, and four of whom were awarded the Excellent Doctoral Thesis of Hunan Province. He was selected into the "Career long impact" and "Single year impact" lists of the world's top 2% scientists (World's Top 2% Sciences 2020) released by Stanford University.

Developments and New Insights.- Influence of temperature on acoustic emission source location accuracy.- Effects of acoustic wave velocity on location accuracy in rocks.- Three-dimensional analytical solution under cube monitoring network.- Three dimensional comprehensive analytical solutions and their application in unknown velocity mining system.- A velocity-free source localization and it application in mines.- A Microseismic/Acoustic Emission Source Location Method Using Arrival Times of PS Waves.- An efficient closed-form solution in three-dimensional structures.- Collaborative localization method using analytical and iterative solutions and mining application.- A multi-step source localization method with narrowing velocity interval of cyber-physical systems in buildings.- Acoustic source location and experimental verification for two-dimensional irregular complex structure.- Velocity-Free MS/AE Source Location Method for Three-Dimensional Hole-Containing Structures.- AcousticEmission b Value Characteristics of Granite under True Triaxial Stress.- Micro-Crack Mechanism in the Fracture Evolution of Saturated Granite and Enlightenment to the Precursors of Instability.- Velocity-Free Localization of Autonomous Driverless Vehicles in Underground Intelligent Mines.- Localization and Discrimination of Microseismic/AE Sources in Mining: From Data to Information.- Slope stability analysis using the velocity-free source localization method.- Qualification assessment for pavements using velocity-free source localization method.