PROBLEMS SOLVING FOR THE SAFETY OF UNDERGROUND MINING OPERATIONS DURING THE MINING OF COAL LONG FACES USING MODERN METHODS OF GEOPHYSICS

Abstract

This article presents the experience of using modern methods of geophysical research when working in conditions constrained by mining workings to determine possible manifestations of increased water flows into the mine space. The need to carry out these studies is caused by a sharp increase in the amount of water flows into the bottom of the coalmine during drilling and blasting, which
led to the stopping of sinking because of the danger of its flooding. When performing studies of structural inhomogeneity of the bottom-hole part of the array, determining its filtration parameters, we used the method of spectral seismic profiling and georadar sounding.
The data obtained during the research showed a high degree of compliance with the ideas about possible parameters of fracturing in the studied rock mass and explain the origin of water manifestations in the fore-breast. Based on the information received, we developed recommendations to reduce the risk of mining under conditions of increased water flows; we determined the distances to the nearest and subsequent structural violations in direction of the roadway construction, which will allow further mining operations with minimal risks.