关键词: 沿空留巷, 切顶卸压, 自动成巷

Abstract: The 9^# coal seam of Honglin Coal Mine in Guizhou is a prominent coal seam. The roadway engineering required for the formation of the mining face is large，the tunneling cost is high，the time is long，and it is easy to cause the tension of mining and excavation，and the gob-side entry retaining can better overcome these problems. Because the mine is affected by gas disasters and complex geological conditions，and there is no experience in the construction of gob-side entry retaining technology，it is necessary to carry out targeted theoretical analysis and field test. The project first evaluated the engineering geological conditions on site，and designed the initial parameters of the gob-side entry retaining scheme based on the industry standard. Then，some parameters were optimized by field test，and a 200 m length roadway retaining project was implemented according to the optimization scheme. Finally，the law of bearing capacity change and surrounding rock deformation evolution of supporting anchor cable is analyzed by collecting mine pressure and deformation data. The test shows that the optimized technical parameters of gob-side entry retaining can meet the needs of safe in Honglin Coal Mine，and the results provide reference for similar projects.

Key words: gob-side entry retaining, roof cutting and pressure releasing, automatic lane formation