Automatically formed roadway (AFR) by roof cutting with bolt grouting (RCBG) is a new deep coal mining technology. By using this technology, the broken roadway roof is strengthened, and roof cutting is applied to cut off stress transfer between the roadway and gob to ensure the collapse of the overlying strata. The roadway is automatically formed owing to the broken expansion characteristics of the collapsed strata and mining pressure. Taking the Suncun Coal Mine as the engineering background, the control effect of this new technology on roadways was studied. To compare the law of stress evolution and the surrounding rock control mechanisms between AFR and traditional gob-side entry driving, a comparative study of geomechanical model tests on the above methods was carried out. The results showed that the new technology of AFR by RCBG effectively reduced the stress concentration of the roadway compared with gob-side entry driving. The side abutment pressure peak of the solid coal side was reduced by 24.3%, which showed an obvious pressure-releasing effect. Moreover, the position of the side abutment pressure peak was far from the solid coal side, making it more beneficial for roadway stability. The deformation of AFR surrounding rock was also smaller than the deformation of the gob-side entry driving by the overload test. The former was more beneficial for roadway stability than the latter under higher stress conditions. Field application tests showed that the new technology can effectively control roadway deformation. Moreover, the technology reduced roadway excavation and avoided resource waste caused by reserved coal pillars.

锚杆注浆切割顶板（RCBG）自动成型巷道（AFR）是一种新型的深部煤矿开采技术。利用该技术对破碎的巷道顶板进行加固，采用顶板切割切断巷道与采空区之间的应力传递，保证上覆地层的坍塌。由于塌陷地层的破碎膨胀特性和开采压力，巷道自动形成。以孙村煤矿为工程背景，研究了该新技术对巷道的控制效果。为比较AFR与传统沿空空巷掘进的应力演化规律和围岩控制机制，对上述方法进行了地质力学模型试验对比研究。结果表明，与沿空空巷掘进相比，RCBG AFR新技术有效降低了巷道应力集中。固煤侧的侧坝肩压力峰值降低了24.3%，泄压效果明显。而且，侧坝肩压力峰值位置远离固体煤侧，更有利于巷道稳定。AFR围岩的变形也小于超载试验沿空巷掘进的变形。在较高应力条件下，前者比后者更有利于道路稳定性。现场应用试验表明，新技术能有效控制巷道变形。而且，