Abstract:
In response to the lack of a practical and standardized anti rockburst technology system in the development and mining process of China's rockburst mines, starting from the theoretical basis of preventing and controlling rockburst in coal mines, combined with the logical relationship and practical technical methods of rockburst prevention and control, this paper summarizes the rockburst prevention and control part of the new version of the Coal Mine Safety Regulations, and establishes two "four in one" technical systems for preventing and controlling rockburst in coal mines. The results indicate that regional prevention of rockburst can be divided into optimizing mining layout and regional pressure relief. Its mechanism of action is to reduce the supply of basic static loads during the driving load supply process of rockburst, providing a low stress environment for local mining space; Local prevention and control of rockburst can be divided into local "prevention" mainly based on pre unloading and hazard relief, and local "treatment" mainly based on creating pressure relief zones and strong support. Its mechanism of action is to eliminate the incremental dynamic and static loads of the mining surrounding rock, forcing rockburst not to start, or to start but not show. Based on the matching of the process of mine development and mining with the process of preventing and controlling rockburst, a "four in one" technical closed-loop system for regional rockburst prevention has been established, including identification of rockburst mines, optimization design of regional development and mining, identification and delineation of regional hazardous areas, and regional pressure relief and effect testing; A "four in one" technical closed system for local anti-collision has been established, including identification and delineation of local hazardous areas, local pre unloading and strengthening of support, real-time monitoring and early warning of local risks, and local hazard relief and effectiveness testing. Combining the physical process of rockburst and the process of load supply, it is proposed that the two "four in one" technical systems of regional and local rockburst prevention are complementary and relay relationships. Among the eight links of the two systems, there are actually four rounds of risk identification and disposal, and each system forms a rigorous risk inspection loop. It is proposed that rockburst mines can adaptively execute according to the development and mining process, but the principle of risk identification and disposal must be used in pairs is necessary. During the 14th Five Year Plan period, breakthroughs have been made in key technologies for regional anti erosion, forming two "four in one" technical systems for the prevention and control of rockburst throughout the entire process. These systems have been integrated into the new version of the "Coal Mine Safety Regulations", providing practical routines for coal mining enterprises to control disasters and benchmarking tools for government supervision and supervision. This lays the foundation for achieving standard rockburst control and promotes standardized, scientific, and effective disaster prevention and control in rockburst mines.