Method for preventing relocation of impurities from the excavations after exploitation of mineral material to ground waters

摘要

The method of preventing the transfer of pollutants from the extraction after the exploitation of mineral raw materials to groundwater is that a 10% suspension of coal ash from the combustion of coal, favourably brown five times over a 10-day period in quantity 0, is sprinkled on the formed 50 cm layer made of flammable rock, 3 m3 a suspension to 1 m2 of the surface formed, then after fifty days the surface formed is bent by a cylinder and the surface thus formed is covered by at least 50 cm of a layer of flammable rock, then filled with flammable rock to a height of less than two metres from the planned surface,and the upper 2-metre layer is filled with a mixture of soil from the application and fermentation sediments with agricultural biogas by weight 9:1.