Study on monitoring and analysis of rock dynamic disaster based on multi-parameter coupling

The problems of ground pressure appeared in a deep gold mine, so a microseismic monitoring system was established. In order to break through the bottleneck of independentce among microseismic monitoring, rock mechanics parameters, stress and strain monitoring, to realize information fusion of multiple parameters under time synchronization, and to improve the reliability of analysis results, especially early warning, firstly, the temporal and spatial evolution of microseismic events such as magnitude-frequency, volume potential-frequency and energy-frequency were analyzed, secondly, the relationship between microseismic events and rock mechanics parameters was constructed, thirdly, the multiple parameters such as microseism, stress and strain were mutually analyzed, finally, the mining disturbance parameters and the overall trend of mine dynamic disaster were analyzed. The results show that the combination of microseismic monitoring in a wide area and stress-strain monitoring in a key area can realize the mutual identification and verification of the parameters, and greatly improve the reliability of the overall trend analysis of rock dynamic disasters. The overall trend analysis method of rock dynamic disasters based on multi-parameter coupling is worth popularizing.