WITHDRAWN Preliminary Analyses of Source Mechanism Effects on Fracture Dynamics in Mines Using Distributed Acoustic Sensing
Description:
WITHDRAWN Distributed Acoustic Sensing (DAS) has emerged as a potentially transformative technology for seismic monitoring in mining environments, leveraging fiber-optic cables to provide real-time, cost-effective, and scalable insights into rock rupture processes. This study employs synthetic seismic modeling to explore the efficacy of DAS in analyzing fracture dynamics and seismic source mechanisms in an underground mine setting. Using the numerical solver ELM2D-DAS, we perform waveform simulations of DAS data from different source-receiver geometries.
We model seismic events within the mine using DAS receiver arrays strategically deployed on the surface and in boreholes. Early results suggest DAS can record a wide range of frequencies with high resolution, giving important insights into rock behavior and rupture processes essential for early failure. Key challenges include seismic velocity model uncertainty, accurately representing geometry and parameters and addressing uncertainties in source mechanism inversion.
Our approach provides a baseline for designing underground DAS arrays for source mechanism inversion, assessing the reliability of DAS-based seismic interpretations to inform safer mining practices. Future work will integrate this study with field seismic data, focusing on the challenges posed by seismic velocity model accuracy and source characterization uncertainty in three dimensions.
Session: Fiber-optic Sensing Applications in Seismology [Poster]
Type: Poster
Date: 4/15/2025
Presentation Time: 08:00 AM (local time)
Presenting Author: Reynaldo
Student Presenter: Yes
Invited Presentation:
Poster Number: 62
Authors
Reynaldo Vite Sanchez Presenting Author Corresponding Author rvitesanchez@mines.edu Colorado School of Mines |
Eilleen Martin eileenrmartin@mines.edu Colorado School of Mines |
Ahmad Tourei tourei@mines.edu Colorado School of Mines |
Jeffrey Shragge jshragge@mines.edu Colorado School of Mines |
Erik Westman ewestman@vt.edu Virginia Polytechnic Institute and State University |
Gabriel Walton gwalton@mines.edu Colorado School of Mines |
Martin Chapman mcc@vt.edu Virginia Polytechnic Institute and State University |
Alexander Ankamah alexanderta@vt.edu Virginia Polytechnic Institute and State University |
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WITHDRAWN Preliminary Analyses of Source Mechanism Effects on Fracture Dynamics in Mines Using Distributed Acoustic Sensing
Category
Fiber-optic Sensing Applications in Seismology