A method for filling cavities and underground extraction which can be used for the filling of the cavities of the filling building material

摘要

A method for filling cavities underground extraction, in which a flowable filler in a cavity is filled in, in which the filler is consolidated, characterized in that, in the filling as a filler a mixture of the in the case of the flue gas desulphurization according to the spray absorption processes residue, and an additive, which in the case of the coal preparation of the flotation tailings material, is used.