Novel 90-m high-middle-section fan-shaped deep hole stoping method

The invention discloses a novel 90-m high-middle-section fan-shaped deep hole stoping method, and relates to the technical field of mining processes. The novel 90-m high-middle-section fan-shaped deep hole stoping method comprises the following steps: S1, rock drilling level stoping preparation is designed, a panel is divided into two chambers in the ore body trend, the two chambers are the first chamber and the second chamber respectively, and a rock drilling chamber is constructed in each chamber in the rock drilling level in the ore body trend. According to the novel 90-m high-middle-section fan-shaped deep hole stoping method, the stoping preparation work amount of the chambers is small, the mining cutting ratio is low, and the stoping preparation cost is low; the dilution rate of the chambers is low; the blasting lumpiness is uniform, the lumpiness rate is low, and the secondary crushing cost is low; the perforation amount is small, the perforation cost is low, damage of blasting to chamber sides is smal