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oa Monitoring of the Gas State of the Mine Atmosphere - Prediction of Gas-Dynamic Phenomena in Coal Workings
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 17th International Conference Monitoring of Geological Processes and Ecological Condition of the Environment, Nov 2023, Volume 2023, p.1 - 5
Abstract
Despite decades of research, the issues of predicting and preventing dynamic phenomena in coal mines remain insufficiently understood. The nature of dynamic phenomena is far from being understood, and the phenomena with increasing depth of coal seams are becoming more and more formidable and, as a rule, unpredictable.
In the basis of research on the materials obtained by the authors in 2006–2021 during research work at coal mining enterprises in Donbas.
The study of dynamic phenomena became even more complicated when the coal mining industry faced large-scale manifestations of them, such as sudden coal emissions accompanied by significant gas emissions and destruction of coal seams, host rocks, iron structures and mining equipment.
Changes in the indicators of hydrocarbon gases (CH - C6H14), CO2 and H2 make it possible to predict the state of the mine atmosphere to prevent accidents in the coal mine.
On the basis of studies of gas mixtures of coal-rock massifs (methane, heavy hydrocarbons, carbon dioxide and helium), the polygenetic composition of natural gas in coal seams of coal basins and deposits of Ukraine is substantiated. This makes it possible to classify them as mobile gas-geodynamic systems, in which intensive processes of gas transfer and interformational gas connections are still taking place, both in coal seams and in host gas-saturated rocks.
Mining operations significantly affect the artificial formation of a new geochemical situation, which is the basis for the development of forecasting methods and means of to prevent the occurrence of such phenomena as sudden rock and coal emissions and explosions of the mine atmosphere.
