Method for partitioning gravel aggregate mine rock mass according to lumpiness requirement

The invention relates to a blasting technology of mine rock mass, in particular to a method for partitioning gravel aggregate mine rock mass according to lumpiness requirements. The method comprises the following steps of selecting rock hardness, rock type, blasting funnel volume, blasting lumpiness distribution index, fracture spacing and explosive unit consumption index for the gravel aggregate mine rock mass; dividing a whole blasting area of the rock mass into a large block area, a middle block area and a small block area by mass according to the indexes; and according to the division standards of the large block area, the middle block area and the small block area, a blasting lumpiness partition map of the rock mass is drawn through geological logging and a blasting funnel test. According to the method, the blasting lumpiness partition map is drawn, the rock mass is partitioned according to the six indexes and the lumpiness quality, the method is more suitable for the reality of sandstone aggregate mine