Theoretical framework for stress relief-support reinforcement cooperative control of rock bursts in deep coal mining

Abstract

With the increasing depth of coal mining each year, rock burst has emerged as one of the most severe dynamic disasters in deep mining. The research status of rock burst prevention and control theory is summarized. Focused on deep coal mining, the major issues encountered in researching the prevention theory of rock bursts are summarized. Subsequently, the scientific connotation theory of stress relief-support reinforcement cooperative prevention and control of rock bursts in deep coal mines is proposed. Then, the mechanisms underlying the major research directions of the theory of stress relief-support reinforcement coordinated prevention and control and present a preliminarily theoretical framework for stress relief-support reinforcement coordinated prevention and control are outlined. To tackle the key scientific problems in the coordinated prevention and control of rock bursts on relief and support in deep mine, the in-depth research based on the synergetic theory is conducted. This involved exploring the principles of near-field coal mass stress relief, near-field roof and floor stress relief, and anchor support. Additionally, the stress-energy evolution processes of the roadway near-field surrounding rock structure under various stress relief and anchor support modes be analyzed. Subsequently, a mechanical model for the optimized matching of stress relief surrounding rock and anchor support is established, with the control of the rock burst energy source at its core. Finally, the principle of collaborative prevention and control of deep mining rock burst stress relief and support from the perspectives of structural synergy, strength synergy, and stiffness synergy is elucidated. This insight is expected to provide theoretical support for the research and development of designs and techniques for deep mining rock burst prevention and control.