25 research outputs found
Physical simulation of georadiolocation field in direct and inverse problems of electrodynamics
No full textA method of physical simulation used in solving electrodynamics problems can be successfully used while solving the problems of georadiolocation for modeling electromagnetic fields of high frequency range with the help of super-high frequencies. The values of similarity coefficients of frequencies and geometric lengths in case of physical simulation under laboratory conditions have been found with regard to field conditions of georadiolocation studies with standard antennas of geo-radar «Zond-12e»
Preliminary GPR Recommendations for Rescue Planning in Mining
No full textThe method of GPR location allows determining the location of the pit from the side wall in non-visual and non-mechanical, non-invasive contact condi- tions. Having determined the algorithm of the GPR data processing options, the location of the pit can be determined from the radio image. The GPR radio image of the pit model observed from the side wall was processed using the âZond 12-eâ GPR software, âPrizm 2.5â software, an algorithm developed by the Institute of Geophysics, the sector of applied and experimental geophysics in the GPR location and electrometry laboratory
In Mining, the Location of Adits or Parts Thereof, by Radio Image and by Fixing their Inclination from the Day Surface by Georadar
No full textThe GPR method allows to determine the location of the adit or its parts from the day surface or other horizontal planes in non-visual and non-mechanical, non- invasive contact conditions. To solve these types of direct problems by the method of physical modeling, parallel GPR profiles were obtained from the horizontal surface of the modeling unit, radio images of inclined pipes of adit models were investigated
Some Georadiolocation Images of Cylindrical Bodies Built with Different Dielectric Fillers, Placed in a Dielectric Environment
No full textFor mining-geological, speleological, archaeological, specific and other interests, it is important to study underground voids with partial water-air filling when they are in a homogeneous environment. In the sector of applied and experimental geophysics of the Institute of Geophysics of TSU, a study of GPR physical modeling for horizontally located cylindrical models was carried out. Models contain spaces bounded by a cylindrical surface filled with water, air and partly water-air. Georadar (GPR Zond 12-e, soft Prizm 2.6) profile studies were carried out in the plane of the horizontal placement of the model relative to the day surface and in planes directed perpendicular to the day surface. Based on the results obtained, the corresponding radio images and their frequency-geometric correspondences in natural conditions were identified and recorded
Georgia, Guria Region, Fragmentary Georadar Survey of the Former Territory of the Soviet Union Research Institute of Radiation Plant Agronom
No full textIn Georgia, in the Guria region, the territory with signs of radioactive contamination was surveyed by the GPR method. Interpretation of crossed GPR profiles for possible subsurface underground objects revealed the existence of simple and mixed burial grounds
Vertical Electrical Sounding and Georadiolocation to Assess Landslide Area Water Saturation
No full textThe vertical electrical sensing method is effectively used by studying landslides. The georadiolocation method is also a powerful tool for studying structure and watering at shallow depths. The paper presents a brief analysis of the landslide works carried out in 2021 on Machavariani Street in Tbilisi. For the landslide study the methods of vertical electrical sounding and ground penetrating radar were used. Together, these two methods yielded reliable results at different search depths, which was additionally confirmed during the drilling process
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ÑÑÑбПк.A hydrodynamic model of a cone-shaped underground lava tube was obtained for a specific set of hydrodynamic parameters of a lava tube, using a planar kinematic velocity model (the Navier-Stokes, Bernoulli, Continuity equations, an analytic formula for determining the thickness of the boundary layer, the plane equation of continuity, the Hagen-Poiseuille formula). It can be concluded that a gradual twist of the lava flow can be caused by two factors: 1. the effect of the hydrodynamic funnel, 2. the roughening of the surface of the lava tube.
Analytical expressions and numerical estimates for both hydrodynamic effects of lava tube models are presented
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Data of the Georadar Exploration of the Cave Satsurbliya
No full textá¡áá¬á£á ááááá¡ ááá á¡á¢á£áá ááŠááááá¡ á€á¡ááá áá ááááááá¡ááá£áá á ááááááá¢áááá¡ áááá¢á€áá ááá¡ ááá áááá¢á áá¡ ááá¡á¬áá áá áááá ááááááááªáá£á á áááááááááá á©áá¢áá áá 5 áááá áááááááááªáá£á áá áá€áááá. ášáááááá áááááááá á áá ášáá¡á¬ááááá á¢áá áá¢áá áááá áá ááŠáááášáááá ááááá áá¢á£áá á¡ááŠá á£ááááá , á áááááá᪠ášááá«áááá áááá¢á€áá ááá¡ áááááááá á á¡ááááá áá áá¡ áá¡á£á¡á¢ááááá¡ áá ááá¡ áááá áááááá¡ á áááá£á á¡áá€á ááá¡ á£á¥áááááá¡. áááá áááááááááªáá, ááá á¡á¢á£áá áŠáááá, áááá áááááááááªáá£á á áá áá€ááááá.Georadar research on the perimeter of the reinforced concrete platform at the bottom of the karst
cave Satsurblia was conducted using 5 georadar tracking profiles. As a result, it was found that in the study area
there are no overall underground cavities that can weaken the base of the platform and create a threat to its stability
