Research on safe and efficient support technology for deep rock burst roadway

Abstract To address the supporting difficulties of deep rockburst roadways in Inner Mongolia and Shaanxi—such as large roadway deformation, strong impact force, and severe roadway spalling—this paper analyzes the failure characteristics of surrounding rock in rock burst roadways. According to the failure characteristics, this paper proposes a cooperative support technology system featuring "high impact toughness + high strength + strong yielding + integrity" and summarizes the characteristics of this system. Through numerical simulation, the differences between this technology system and conventional support in deformation control, as well as bolt and cable stress, are analyzed. Based on the analysis of geomechanical test results, the support technology scheme for the deep 2–2 coal main haulage roadway in a mine is proposed in accordance with the cooperative support technology and verified through numerical simulation. The results show that the support scheme can effectively control the harmful deformation of roadway surrounding rock. Finally, the reliability of the cooperative support technology is further verified through the underground industrial test and field application effect evaluation.