Seismic monitoring and assessment of geodynamic processes during mining operations in conditions of the International underground mine

The article describes the GITS seismic monitoring system developed by VNIMI, which has been providing continuous monitoring of seismic activities and regional-level forecast of rock-bump hazards within the mining allotment of the International underground mine under commercial operation since April 2022. The methodology of observations is presented, as well as results of analysing the obtained data in terms of the energy and spatial characteristics of seismic events. A solution is proposed to the problem of determining the velocity characteristics of the host rocks in the upper and lower parts of the mine using information on the seismic event parameters obtained from the GITS system, and a preliminary assessment is given of the velocity characteristics of the rock mass. The data obtained at the current stage of research for two limited areas can be applied to assess the long-term state and behaviour of the rock mass. For the further monitoring purposes, such observations can be divided into a local-level forecasting network customised for minor events and a regional-level mine-wide seismic activity monitoring network configured to record major (500 J and greater) events, including the regional-scale earthquakes.