Control Systems and Computers

DOI: https://doi.org/10.15407/usim.2016.06.080

Upr. sist. maš., 2016, Issue 6 (266), pp. 80-88.

UDC 519.6

Lytvyn Oleg Nikolaevich – Doctor of physical and mathematical sciences, Prof., head. of caf. Higher and Applied Mathematics of the Ukrainian Engineering Pedagogical Academy, Kharkov, 61003, ul. University, 16, E-mail: academ_mail@ukr.net

Dragun Vladimir Vladimirovich – post-graduate student of the Department of Higher and Applied Mathematics of the Ukrainian Engineering Pedagogical Academy, Kharkov, 61003, ul. University address, 16, E-mail: vdragun.94@gmail.com

The Spatial Distribution of Slowness on the Basis of the First Approximation in the Mine Seismic Tomography

Introduction. Seismic tomography is one of the topical areas of the modern geophysics, based on building the image object by
means of the research paths spread of the seismic signals.
The finding of the spatial distribution of the slowness in the mine seismic tomography by means of the first approximation to the
slowness on the system horizontal plane is suggested.
The purpose of the article: to analyse the literature on the mineral exploration, to explore approximation by Fourier sums discontinuous functions of two variables using discontinuous splines of two variables, approximation of Fourier sums functions of two
variables, to determine the spatial distribution of slowness on the basis of the first approximation in mine seismic tomography, to
carry out computational experiments.

Methods: method of studying and generalization of the advanced experience, analysis of the literature, method of algorithmization.

The results and conclusions. The proposed approach can be viewed as constructing a mathematical model for finding the spatial
distribution slowness of seismic wave propagation of a given three-dimensional region in the earth crust, in the case where a
formula for the slowness approximate is calculated as the Fourier sums at each plane z = zk, k = 1, .., M. At the same time, information
which is used for approximate calculation of these coefficients of Fourier sums on every horizon plane z = zk, is the first time
the arrival of the seismic signal in the observation point from the seismic sources. Coefficients for Fourier sums are calculated using
the projection system along a certain line, located in each of the horizontal planes.

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Keywords: computed tomography, mine tomography.

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 Received 25.08.2016