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oa Characterisation of the Tunnel-Channel Wave around a Coal Mine Roadway Based on Synthetic and Real Data
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, NSG2020 3rd Conference on Geophysics for Mineral Exploration and Mining, Dec 2020, Volume 2020, p.1 - 5
Abstract
Summary
To improve safety in coal mine, particularly around roadway, non-destructive and cost-effective seismic methods need to be developed. We focus our research on dispersive waves which propagate inside the coal seam in the vicinity of the roadway. We call it tunnel-channel waves (TC-waves). We demonstrate how the group velocity and frequency of the dominant energy of TC-waves behave based on finite-difference 3D numerical modelling and confront it with a dataset recorded in the Rydułtowy coal mine in Poland. We observe connection between investigated parameters and velocity anomaly in the numerical model as well as rock mass deformation due to past exploitation in the mine.
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