Analysis of the mechanism and effects of advanced pipes support in roadways

With the increasing depth of coal mining, the deformation and instability of high-stress soft rock roadways have become critical challenges in mining engineering. Although various support technologies have been applied to deep soft rock roadways, research on the support mechanism and mechanical effects of advanced pipes remains limited. Based on the Winkler elastic foundation model, this study establishes a mechanical model for advanced pipes. Using differential equations, the influence of various parameters on the deformation of advanced pipes is analyzed, and the mechanical effects of the advanced pipes support system are investigated through numerical simulations. The results indicate that increasing the diameter and wall thickness of the pipes, as well as reducing the excavation step and ring spacing, helps effectively control pipes deformation. At the same time, the advanced pipes support system significantly improves the stability of both the surrounding rock and the excavation face. This study not only enriches the theoretical foundation of advanced pipes support but also provides reliable parameter references for the design of advanced temporary support in deep soft rock roadways, offering significant engineering application value.