Technology for controlling rock burst in mine roadway surrounding rock under dynamic load disturbance

To address the issue of rock burst in mine roadways caused by dynamic load disturbances during deep mining and ensure efficient and safe mining in deep mines, this paper proposes a control technology for rock burst in mine roadways under dynamic load disturbances. By establishing an energy criterion model for the superposition of dynamic and static loads to unveil the rock burst initiation mechanism.; Propose the impact energy velocity index of coal-rock combination considering the constraints of top and bottom plates, and establish a multi-index comprehensive evaluation system. Design a multi-level pressure-reducing and anti-erosion support system integrating "strength and toughness - pressure-reducing and energy absorption", forming a surrounding rock control technology that emphasizes both "guidance" and "resistance". Practical application and analysis show that, the deformation of the surrounding rock of the roadway has been significantly suppressed, the damage rate of the support system has been greatly reduced, and the frequency of microseismic events has decreased. This prevention and control technology can ensure the integrity of the support system, achieve long-term stability and controllability of the roadway under high dynamic load disturbances, and provide strong technical support for deep mine exploitation.