为了对沿空掘巷火成岩侵入段巷道围岩的稳定性进行分析，现场实测了无火成岩侵入段和火成岩侵入段的巷道变形量，发现火成岩侵入段巷道围岩变形量明显大于无火成岩侵入段，最大变形量超过500 mm，严重影响了巷道断面完整性。分析认为，火成岩的侵入导致煤柱的完整性和强度降低，因而导致巷道变形量大幅增加。数值模拟结果显示，巷道围岩变形量主要集中在煤柱帮一侧，为巷道支护优化指明了方向。提出在原有支护方式上采用“注浆加固+单体支柱”方式提高顶底板及巷帮的完整性和强度。现场应用结果表明，采用“注浆加固+单体支柱”强化支护方式后巷道顶底板最大变形量为80 mm，两帮最大变形量为75 mm，巷道围岩变形量得到大幅降低，有效保障了巷道围岩的稳定性。

 In order to analyze the stability of the surrounding rock of the roadway in the igneous intrusion section of gob-side entry excavation, the deformation of the roadway in the non-intrusion and intrusion sections was measured on site. It was found that the deformation of the surrounding rock in the intrusion section of the roadway was significantly greater than that in the non-intrusion section, with a maximum deformation exceeding 500 mm, which seriously affected the integrity of the roadway section. Analysis suggested that the intrusion of igneous rocks led to a decrease in the integrity and strength of coal pillars, resulting in a significant increase in deformation of the roadway. At the same time, numerical simulation results showed that the deformation of the surrounding rock of the roadway was mainly concentrated on the side of the coal pillar, indicating the direction for optimizing roadway support. Propose to use the "grouting reinforcement+single pillar" method on the basis of the original support method to improve the integrity and strength of the roof, floor, and roadway walls. The on-site application results showed that after adopting the "grouting reinforcement+single pillar" strengthening support method, the maximum deformation of the roadway roof and floor was 80 mm, and the maximum deformation of the two sides was 75 mm. The deformation of the roadway surrounding rock was significantly reduced, effectively ensuring the stability of the roadway surrounding rock.