Comparative analysis of rockburst propensity of deep gold ore

In order to investigate the characteristics of rockburst propensity in deep shaft mines, this paper takes Jiangjiayao Gold Mine as the research background and uses the hollow envelope stress relief method to carry out ground stress measurements at the site and obtain the three-dimensional stress state at three measurement points in the mine area.The basic mechanical parameters of the rocks at each measurement point in the mine area are obtained through rock tests.Multiple criterion analysis of the propensity of rock explosion in the mine area is carried out using the elastic deformation energy index method, rock strength-stress ratio method, Barton criterion, stress concentration coefficient method, Russenes criterion and Erlang Mountain criterion.The analysis results correspond to the actual site conditions, the results show that Barton criterion and rock strength stress ratio evaluation system is more accurate.Using these two types of rockburst prediction criteria, it is predicted that the risk of rockburst may start to appear in Jiangjiayao Mine around 1 400-1 600 m, which provides scientific basis and guidance for the later deep mining.