In this paper, a mining face of a mine in Pubai Huangling County serves as the study object. Use the numerical modelling analysis approach to compare the actual mining face (315m) with the designed mining face (200m). The results show that the large-size mining face has a larger peak abutment pressure and a larger stress concentration factor than the general-size mining face. Mining intensifies roadway stress, causing greater displacement of its roof, floor, and walls. To tackle the intensified pressure from the expanded mining face, we developed a hydraulic fracturing pressure management plan. This plan was crafted through meticulous theoretical studies and computational models, and it has since undergone rigorous field testing.