METHOD FOR THE HARMLESS DUMPING OF SOLIDIFIED INORGANIC RESIDUES AND WASTES IN ABANDONED QUARRIES

摘要

The invention relates to a method for harmless dumping of solidified inorganic residues and wastes, especially those from flue gas purification plants or from metallurgical processes, in abandoned quarries by mixing the residues or mixtures of residues with sufficient quantity of hydraulic binders such as Portland cement, blast furnace cement or alinite cement, and by addition of the required quantity of mixing water in the course of repeated mixing, so that a concrete mortar mixture capable of setting is formed. The invention is characterised in that the concrete mortar mixture is adjusted to a strength of equal to or greater than 2 N/mm<2> (after 7 days) and a permeability value of Kf equal to or less than 10<-9> m/s, is built up in layers on a base seal applied to the quarry bottom to give a monolithic landfill body with steep flank walls and in that the remaining free space between the landfill body and the quarry wall is filled with inert materials (Figure 6), and in that, after completion of the landfill work, the landfill body is provided in the usual manner with a suitable surface seal.