| Issue |
E3S Web Conf.
Volume 56, 2018
VII International Scientific Conference “Problems of Complex Development of Georesources” (PCDG 2018)
|
|
|---|---|---|
| Article Number | 01016 | |
| Number of page(s) | 6 | |
| Section | Geotechnological Problems of Development of Subsoil | |
| DOI | https://doi.org/10.1051/e3sconf/20185601016 | |
| Published online | 26 September 2018 | |
Concerning the capability of monitoring the condition of coal bed by tomography based upon the representation of object model using Chebyshev polynomials
1
The Institute for Problems of Integrated Development of the Subsurface named after Academician N.V. Melnikov of RAS, Moscow, Russia
2
Institute of Geonics of the Czech Academy of Science, Ostrava-Poruba, Czech Republic
* Corresponding author: lanazarova@ngs.ru
3D geomechanical model of “Vorkutinskaia” mine, which allowed describing the development of stressed and deformed state of coal bed rock mass, has been developed and realized in numbers. Using empirical dependences of longitudinal waves velocity V on mean stressσ established by laboratory testing data, 3D distribution of V has been plotted. First arrival time tomography task, based upon the approximation of a bed geometrical model by Chebyshev polynomials, in order to give appraisal to the applicability for bed velocity structure reconstruction, has been analysed. With the use of data on dynamic events, registered by permanent stations, the object tomography has been prepared and 3D field of elastic waves velocities in highlighted part of area under study. It enables essential opportunity of stress state, if functions V (σ) for rocks building up the massif are known.
Key words: Coal-rock massif / 3D model / Tomography / Chebyshev polynomials / Stress field reconstruction
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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