Novel fan-shaped deep hole distribution method for mining blasting

The invention discloses a novel fan-shaped deep hole distribution method for mining blasting, and relates to the technical field of mining processes. The novel fan-shaped deep hole distribution method for mining blasting comprises a scheme A and a scheme B, the scheme A is preferentially used, and if the scheme A still cannot meet the construction requirement, the scheme B is used. According to the scheme A, a single row of holes are decomposed into an auxiliary row of holes A and an auxiliary row of holes B, and odd number of holes are distributed in the row A. According to the novel fan-shaped deep hole distribution method for mining blasting, through the hole distribution manner that the single row of fan-shaped holes are decomposed into the auxiliary rows, the problem that normal punching cannot be achieved due to the fact that the hole distance is too small in the design process of the fan-shaped holes is solved under the condition that cost is not increased. The blasting recovery rate of the fan-shaped