Research status and development trend of mining overburden failurelaw and control technology

The law of overluing stratas failure caused by mining and control technology is an important foundation for coal mine safety production, surface protection, and groundwater resources protection. From the point of view of coal mining under water, this paper focuses on the development status and latest research results of overluing stratas failure law and control technology, including the evolution and failure characteristics of the overluing stratas failure structure due to mining, the types and forms of overluing stratas failure, the development law and prediction method of overluing stratas failure, focusing on the overluing stratas failure law and prediction under different mining techniques, special geology and high-intensity mining methods. The actual measurement method of overluing stratas failure was intoduced, which shows that the detection method has changed from the traditional single technology to the combination of drilling and geophysical exploration, the combination of surface and underground, traditional methods and microseismic monitoring, micro-resistivity scanning, optical fiber testing and other new technologies. The progress of overlying stratas failure control technology was also explained from the perspective of three-under coal mining. Research and practice show that after decades of research and practice, China has formed a relatively complete overluing stratas failure and control system, which provides a reliable technical guarantee for safe, efficient and green mining of coal mines. Finally, the future development trend of overluing stratas failure rules and control technology are proposed. It is concluded that deep mines, high-intensity mining, special geological conditions, low damage and intelligence in Western China will become the focus and development direction of the future overluing stratas failure and control technology research field.