Abstract: To address the issue of significant deformation in the surrounding rock of large cross-section roadway in thick seam,the 3309 headentry at the Sangshuping No. 2 mine of Hancheng Mining Co., Ltd., was utilized as the engineering background. Through the combined method of theoretical analysis,numerical simulation and field test,the technology of “ roofcutting for pressure relief with blasting pre-cracking + anchor cable reinforcement support” was put forward. The research results indicate that the lateral support stress distribution of the surrounding rock around the coal pillar in the 3309 headentry exhibits an “saddle-shaped” variation, with asymmetric distribution of vertical stress on both sides of the coal pillar. Using this technology scheme,the average maximum surface convergence of the roof,coal wall,and coal pillar sides was reduced by more than 20% compared to that of the original rockbolt support scheme. During the coal winning of the adjacent working face in the 3309 headentry,the surrounding rock deformation under both the original rockbolt support scheme and the “ roof-cutting for pressure relief with blasting pre-cracking + roadway cable reinforcement support” scheme follows a process of no significant deformation,slow deformation,rapid deformation,slow deformation,and finally tends to be stable. Field monitoring results show that the deformation of surrounding rock of large cross-section roadway can be effectively controlled by adopting the proposed technology.