Ecological consequences atomic explosion chamber flooding of mine “Yuncom” (Central Donbas)

Abstract

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.