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腾晖矿为缓解采掘衔接紧张，解决因流设煤柱导致的回采效率低等问题，以 2202 工作面为工程背景，基于理论分析和数值模拟相结合的研究方法对切顶卸压沿空留巷无煤柱开采技术进行研究，给出了成巷的原理，通过不同切顶卸压高度下围岩垂直方向受力情况进行研究，发现随着切顶卸压高度的增大，巷道围岩的应力峰值降低，确定最佳切顶高度为 6m，并通过现场切顶卸压沿空留巷成巷变形量等进行监测，验证了切顶卸压沿空留巷无煤柱开采技术的可行性，保证矿井的安全高效开采。“,”in order to reduce the waste of coal pillar mining resources, this paper takes Duerping mine as the research background, through the research method of combining theoretical analysis and numerical simulation, studies the gob side entry non pillar mining technology of roof cutting and pressure relief, gives the principle of roadway forming, and studies the vertical stress of surrounding rock under different roof cutting and pressure relief height With the increase of height, the stress peak value of surrounding rock of roadway decreases, and the optimal cutting height is 6m. Through the monitoring of deformation of gob side entry retaining with roof cutting and pressure relief on site, the feasibility of gob side entry retaining without coal pillar mining technology with roof cutting and pressure relief is verified, which provides certain reference for efficient mining and improvement of economic benefits of mine.