By adopting slurry anchor cable instead of the original hydraulic point column + articulated beam overrun support in the lower roadway of 172404 working face, the slurry anchor cable reinforcement replaced the single pillar and hydraulic support on the basis of the original support structure of the roadway, which improved the utilization rate of the roadway section and reduced the support cost, and provided technical guarantee for the promotion and application of intelligent mining technology in mines.