Location of underground microseismic source based on 3D two-stream network
WU Yangxu
CHEN Ping
LI Bo
Abstract：The detection technology of the microseismic source center of underground damage is mainly used for the location of the under-ground damage,positioning of explosion point of artillery shells in weapon testing ground.Aiming at the problem that clock error of mi-croseismic acquisition sensor and the lack of high frequency information of acquisition data,this paper proposes a distributed microseis-mic source location for underground damage based on 3D two-stream network.The method uses spatial scanning to make the low-dimen-sional vibration wave information highly dimensional,transforms the seismic waveform data from the time domain into the energy do-main,and establishes the correspondence between the source center and the high-dimensional energy distribution.Then,the energy do-main features are extracted through the 3D-CNN network,and the LSTM network gradually optimizes the focal center region to obtain ac-curate focal center location.The results show that the source location of underground damage microseismic based on 3D dual-current net-work is obviously superior to the traditional traveltime-like source location method,and the proposed method has stronger data fitting abil-ity and anti-interference ability in high SNR data.The results of static explosion test in small field show that the proposed method is super-ior to the traditional method in near field microseismic source location.
Keywords：underground damagemicroseismic source3D-CNNLong Short-Term Memory(LSTM)
Publication Date：2023-12-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：12( 13-24 )