Surrounding Rock Analysis and Support Design of the Machine-Rail Roadway in the No.9 Mining Area of the No.15 Coal Seam in Guzhuang Coal Industry

To improve the pertinence of surrounding rock support in mining area roadways, this study takes the excavation of the machine-rail roadway in the No.9 mining area as the research object. The mechanical characteristics of the surrounding rock of the machine-rail roadway were analyzed through methods such as mechanical parameter testing, and a targeted surrounding rock support scheme was proposed accordingly. Field measurements show that the roof strata of the machine-rail roadway have strong load-bearing capacity and a relatively stable structure. A bolt-mesh-cable support method is proposed for surrounding rock reinforcement, and a detailed technical scheme for supporting the machine-rail roadway is provided. After field application, the stresses on roof bolts and cables remained stable, and no bolt or cable failure was observed. The deformations of the roadway roof, floor, left rib, and right rib were controlled within 76 mm, 58 mm, 46 mm, and 44 mm, respectively, indicating good surrounding rock control performance. The research results can provide a reference for surrounding rock support in other similar mining area roadways.