To address the low efficiency, poor safety, and high costs associated with traditional segmental blasting in soft rock conditions, research is conducted on high-efficiency deep-hole blasting techniques using digital electronic detonators. Taking the No. 6 cutting shaft at the Beizhan iron ore mine as the engineering context, an innovative two-stage upward-directed deep-hole rapid shaft sinking blasting plan is designed for the 19.3-meter-deep cutting shaft in soft, fractured rock. Through theoretical calculations, key blasting parameters are determined, including a 50-millisecond inter-hole delay and a 300-millisecond inter-layer delay. A large-diameter empty hole (127 mm) is utilized as a compensation space, with a charge hole diameter of 76 mm. The blast hole layout and initiation sequence are rationally designed. Field test results demonstrate: the top surface remains well-defined after blasting, with good roof integrity and uniform block size. The measured height meets design requirements. Technical-economic analysis reveals: compared to conventional tunneling methods, deep-hole blasting reduces costs by 53%, saves 6 days of construction time, and significantly improves operational efficiency. The two-stage blasting approach effectively minimizes frequent disturbance to the fractured rock mass, preventing rock falls. Combined with precise detonation control using digital electronic detonators, this method substantially enhances operational safety.