EXPERIENCE OF APPLICATION OF GEOPHYSICAL METHODS FOR SEARCH OF HETEROGENEITIES OF NATURAL AND TECHNOLOGICAL CHARACTER

Abstract

The paper presents an example of application of
geophysical research methods to solve the problem
of finding a fallen and cleaved three-storied sinking
platform in the operated barrel. Based on the information provided, the fall of the platform was
caused by the accumulated rock mass in the form of
placer in the process of ore release, as well as the
unloading of the skip into the shaft.
To increase the accuracy and reliability of the results, parallel measurements were made using the
spectral seismic profiling (SSP) and georadar sensing of the rock mass. The method of spectral seismic profiling (SSP) is based on the use of dependence between the spectral composition of the oscillatory process arising from the impact on the exposed surface of the rock mass, and the structural
composition of the array. The basis of the GPR
method is the reflection of an electromagnetic wave
from junction of masses with different electrophysical properties. Each of the presented methods has
limitations.
The results of the complex geophysical survey let
us to reveal the following boundaries of the location of the metal platform covered with rock mass
in the vertical shaft: 5.5-6.0 m, 10.5-11.0 m, 15 m. The combined results of the two measurement
methods and their comparative analysis show
rather high convergence, and thus the reliability of
the obtained results has been also confirmed. Performed exploratory drilling of deviated wells from
horizontal excavation confirmed the obtained results.