Authors analyzed of ecological hydrogeological conditions of coal mine Yuncom underground nuclear blast chamber flooding and possible risk of the ground and surface water contamination.An analysis of the compatible graphs of semi-logarithmic dependences lg S0/St) of the time observation of the levels rise in the mines of the NTGS according to the analytical model that was developed on the example of flooding of the Stakhanov group of mines indicates their hydrodynamic analogy and the possibility of separation of three principal phases of the hydraulically-filtration process of the Donbas mines flooding:1 ) initial accelerated rise of the level is mainly connected with decrease in volume of the peripheral part of the depression due to reduced volume of mining operations and the prevailing movement of underground flow in its deep permeable part; time extension up to 3–4 months;2) predominance in the lithologic composition of coal-bearing rocks of the weakly permeable sandy-clay rocks (up to 70–80 % of total capacity) with increased sorption capacity increases the waterproofing capacity of the rock mass in conditions of further deformation and its full water saturation during flooding of the mine.3) For the zone of the “Klivazh” object influence is characterized by the limitation (in the current conditions of incomplete water saturation) migration of radioactive explosion products due to their predominant concentration in the difficult soluble formations of the explosive chamber and the influence of coal-bearing, weakly permeable rocks sorption.Main hazards of these processes are connected with stohastic parameters of mine water movement and dangerous toxic contaminants migration into fresh water aquifers (zone of active water exchange) and surface water objects.Modern system of ground water movement during regional coal mines flooding within Central Donbas has a complex hydraulic-filtration structure that is why this situation demands of the new calculative models elaboration.
Annotation. The current hydrogeological state of Selidove mine group (named after D.S. Korotchenka, Selidivs'ka, № 2 Novogrodivs'ka and № 1-3 Novogrodivs'ka) is characterized by damaged geological environment, which was derived from coal extraction. According to the geological zoning the Selidove mine group can be classified as Donetsk hard-coal basin within Chervonoarmiqs'ka monocline damaged with tectonic framework. In this study the estimation of hydrogeological situation around the mine № 1-3 Novogrodivs'ka was performed. In undertaken the evaluation the flooding of mining galleries of № 2 Novogrodivs'ka, Selidivs'ka and, mine named after D.S. Korotchenka was taken into account. In terms of surveyor observation data the filtration of mining water from mine № 2 Novogrodivs'ka toward mine № 1 Novogrodivs'ka is possible through the nordic and south blocks, which divide the mining activities processes. The speed of flooding level change at mine № 2 Novogrodivs'ka is about 0.12 meters per day. Bearing this in mind the required time to reach the ground surface (absolute height) +185 meters is about 532 days starting from September 2019. Keeping in mind the volume of extracted underground space and the flooding factor 0.4, the common forecasted water income is about 65-130 m 3 per year.
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