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| Discussion and prospect of source location of rock fracture |
| WU Shunchuan1，2，GUO Chao2，GAO Yongtao2，ZHANG Chaojun2，ZHENG Furun2 |
| (1. Faculty of Land Resources Engineering，Kunming University of Science and Technology，Kunming，Yunnan 650093，China；2. Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mine，University of Science and Technology Beijing，Beijing 100083，China) |
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Abstract Seismic source location plays a key role in microseismic/acoustic emission data processing. The accuracy and timeliness are important for the analysis of rock fracture mechanism as well as rockmass dynamic disaster prediction and early warning. Based on a large number of study cases and literatures related to geotechnical engineering microseismic/acoustic emission monitoring source location，the domestic and foreign studies related to the practices and theories of microseismic/acoustic emission monitoring are summarized. Starting from the principle of seismic source location，the main research directions of influencing factors and related issues of seismic source location accuracy are discussed. The source location problem is considered to be a complex nonlinear inversion process interfered by multiple factors，and its location accuracy is affected by the following factors：seismic waveform denoising and first arrival time picking，the precision of the velocity model，the accuracy of the travel time algorithm with respect of the velocity model，the inversion performance of the seismic source location method，and the instrument performance and the design of the monitoring system. Based on the requirements of the massive data processing in microseismic/acoustic emission monitoring technology，the future applications and development directions of intelligent methods such as deep learning for improving source location accuracy are proposed.
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2021, Vol. 40 
