Application Study on Microseismic Monitoring System in Underground Mine

Abstract

Mine disasters can cause injuries and economic losses during coal mining operations and are a primary focus of mine disaster monitoring. In recent years, an underground microseismic monitoring system capable of real-time 3D positioning has been developed internationally. This system enables long-term, continuous, and dynamic monitoring of rock layer fractures and movements, allowing for the prediction and early warning of major mine hazards such as roof collapse, mine water inrush, coal and gas outbursts, and rockburst. One of the key challenges in implementing underground microseismic monitoring is the deployment and installation of borehole sensors. To accurately position and secure sensors in the borehole wall, the "anchor claw" installation technique is employed. As long as the claw structure is rationally designed and provides sufficient support, the construction results are highly effective. Analysis of typical microseismic events demonstrates that microseismic monitoring can determine the epicenter location, reflect rock layer fractures and movements, and reveal the characteristics and patterns of collapsed zones and fracture zones. The application of underground microseismic monitoring systems reduces costs, enhances monitoring accuracy, and provides valuable guidance for roadway design, support systems, and coal mine safety production.