Authors: M.S. Plaksin, R.I. Rodin, G.V. Ivanov

Title of the article: Comparative assessment of the effectiveness of hydraulic compression and hydraulic loosening of the coal seam during preparatory workings

Year: 2026, Issue: 2, Pages: 115-123

Branch of knowledge: 2.8.6. Geomechanics, destruction of rocks by explosion, mine aerogasdynamics and mining thermophysics

Index UDK: 622.831.322

DOI: 10.26730/1999-4125-2026-2-115-123

Abstract: The relevance of the presented work is due to the need to ensure safe mining operations during the development of explosive formations. This article is devoted to the analysis of methods of hydraulic action on high-gas-bearing coal seams during preparatory workings, with special attention to methods of hydraulic loosening and hydraulic compression of the formation. The features and effectiveness of the methods, their advantages and disadvantages, as well as issues of controllability and safety when performing these processes are considered. Hydraulic loosening is based on high-pressure injection of water, which causes the destruction of the massif and reduces the loads on the reservoir, however, its uncontrollability and the risk of uneven processing are cause for concern. Hydraulic compression allows for more precise control of the process and contributes to the displacement of the bottom-hole surface, significantly increasing gas output and ensuring safe mining conditions in an operational mode. However, hydraulic compression requires increased control due to the possibility of sudden emissions of coal and gas, especially at great depths. As a means of control, the authors of the article propose using the capabilities of modern methane concentration and gas extraction monitoring systems, which will improve safety and efficiency during hydraulic compression. The issue of the validity of the abolition of hydraulic compression in modern regulatory documents is raised, as well as the prospects for increasing control and the use of seismoacoustic methods to assess the state of the reservoir. The main conclusions indicate that there are significant differences between hydraulic compression and hydraulic loosening in terms of their impact on the carboniferous massif. The exclusion of hydraulic compression as a method of controlling sudden emissions of coal and gas deprives coal mines of an important tool, since the mining and geological conditions of mining operations are characterized by a significant variation in parameters and require a creative approach to ensure safe mining conditions. At the same time, it is necessary to adapt the parameters of hydraulic compression, taking into account the mining and technological conditions in modern coal mines, especially in terms of monitoring the progress of its implementation

Key words: coal seam hydraulic compression of the formation hydraulic loosening of the formation methane abundance of workings mining safety gas kinetic reaction of the coal seam sudden release

Receiving date: 19.09.2025

Approval date: 15.05.2026

Publication date: 29.06.2026

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