Research on Water-Rock Interaction Between Mine Water Accumulation and Broken Coal and Rock Mass
The long-term interaction between mine water accumulation and broken coal and rock masses in goaf will lead to changes in water quality and may become a direct factor in polluting underground aquifers.To explore the water quality changes law during the interaction process between the two,experiments are conducted to analyze the ion changes law and internal mechanisms under different temperature and different weathering degree conditions.The results show that with the increase of temperature and the weathering degree of coal and rock mass,the total release amount and rate of Na+and K+will exhibit a positively correlated evolutionary law;The changes in Ca2+concentration is the result of the comprehensive effect of dissolve corrosion and precipitation,showing a trend of first increasing and then decreasing;The process of total alkalinity changes in water can be divided into dissolve corrosion stage in initial stage,adsorption stage in medium term,and stable stage in later period;The process of total hardness changes in water can be divided into dissolve corrosion stage in initial stage,adsorption stage in medium term,and dissolve corrosion stage in later period;During the process of purifying water by fracturing coal and rock masses,there is a competitive process of dissolve corrosion,precipitation,and adsorption,and it has obvious timeliness,which has a significant impact on water quality.
mine water disaster prevention and controlmine water pollution prevention and controlwater-rock interactionhydrochemical characteristicsmine water accumulation
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