Concerning the capability of monitoring the condition of coal bed by tomography based upon the representation of object model using Chebyshev polynomials

0502669 - ÚGN 2019 RIV FR eng C - Conference Paper (international conference)
Nazarova, L. - Nazarov, L. - Protasov, M. - Panov, A. - Koníček, Petr
Concerning the capability of monitoring the condition of coal bed by tomography based upon the representation of object model using Chebyshev polynomials.
E3S Web of Conferences. Les Ulis: EDP Sciences, 2018, č. článku 01016. 56. E-ISSN 2267-1242.
[International Scientific Conference Problems of Complex Development of Georesources /7./ - PCDG 2018. Khabarovsk (RU), 25.09.2018-28.09.2018]
Institutional support: RVO:68145535
Keywords : coal-rock massif * 3D model * tomography, Chebyshev polynomials, stress field reconstruction
OECD category: Mining and mineral processing
https://www.e3s-conferences.org/articles/e3sconf/pdf/2018/31/e3sconf_pcdg2018_01016.pdf

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.
Permanent Link: http://hdl.handle.net/11104/0294594