Abstract

Accurate seismic source location has always been the most important purpose of micro seismic and seismic monitoring. The location accuracy inside the existing monitoring networks is generally high, whereas the accuracy in the external area and sensor accessories area tends to be low. This scenario contributes to an overall limitation in the effective monitoring area. The seismic source location was performed in this study using P waves and S waves to improve the location accuracy outside the monitoring networks and in the adjacent area and enlarge the high-accuracy control area of the monitoring networks. Moreover, the mechanism of seismic source location was theoretically deduced and clarified utilizing P-S double waves. Then, the location accuracy using the P wave and that using the double waves in three typical three-dimensional monitoring networks was analyzed via numerical simulation. Results demonstrate that, in three-dimensional space, using double waves increase the accuracy control in the radius direction of a monitoring network. With the addition of the S wave, the vertical location error is reduced substantially. The micro seismic events in a certain range outside the monitoring networks can also be positioned at high accuracy. The area for precise monitoring has been expanded, and the stability of location results has been improved. This research establishes a basis for the advancement of micro seismic monitoring technology, aimed at achieving precise and reliable localization in underground engineering applications.

Department(s)

Mining Engineering

Comments

National Natural Science Foundation of China, Grant 52204155

Keywords and Phrases

Location effec; Location mechanism; P waves and S waves; Seismic source location; Three-dimensional space

International Standard Serial Number (ISSN)

1791-2377; 1791-9320

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 School of Science, DUTH., All rights reserved.

Publication Date

01 Jan 2024

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