Method for land reclamation of coal mine area based on utilization of demolished building wastes

The invention relates to a method for land reclamation of a coal mine area based on utilization of demolished building wastes. The method comprises the following steps of firstly, sorting the demolished building wastes of a village; then, crushing the sorted demolished building wastes by a building waste crusher until the particle size is less than 10cm; backfilling with a mixture of the demolished building wastes until the depth is 1-1.2m away from the ground surface, and compacting the backfilled demolished building waste mixture by layers in the backfilling process, with the layering thickness of 1-1.5m; replacing with soil and covering the compacted backfilling mixture, wherein the soil depth is 1-1.2m, and the thickness is basically consistent with the surrounding elevation after compacting; finally, applying fertilizer to the covered soil. The method has the advantages that the land reclamation is realized on the basis of backfilling and utilizing of the demolished building wastes, the water and fertilizer maintaining effect of the soil is good, and the grain yield of planted crops is high.