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To the Question of the Possibilities of the Method of Georadiolocation for the Localization of Voids
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Engineering and Mining Geophysics 2018, Apr 2018, Volume 2018, p.1 - 6
Abstract
In the paper, on the basis of numerical modeling of the georadiolocation problem, the necessary requirements for the technical characteristics of a georadar for the detection of voids in a subsurface medium are considered. The algorithm used to solve the direct problem of georadiolocation is approximated to the actual experiment by taking into account the construction of the georadar, the source and receiver parameters, their position relative to the medium of research and inhomogeneity in it. Calculations of the spatiotemporal distribution of the field of the detected signal from a pulse source lying on the media interface with a hollow anomaly of a given geometry are presented. Based on these estimates, the dynamic range of the georadar needed to determine it is estimated. Results of georadar studies of low-contrast inhomogeneities in the form of cavities in mines using GROT 12 series georadars and their analysis based on the results of numerical simulation are presented. It is demonstrated that already at the planning stage of the experiment it is possible to estimate the required parameters of the georadar necessary for the detection and localization of the inhomogeneities of interest at a certain depth of sounding.