CHINA MINE ENGINEERING

Aiming at the problems of deep rock mass quality evaluation and support system optimization in Jinxing Gold Mine, based on the geological mechanics RMR classification system, taking the roadway in the middle section of Jinxing Gold Mine -450m as the research object, and applied in the roadway in the middle section of Jinxing Gold Mine, the RMR score of the rock mass is 45, the rock mass quality is Ⅲ and the lithology is good. Based on the results of rock mass quality classification, the paper puts forward the combination of theoretical calculation and numerical simulation, and the multilevel support application test of industrial classification zones in selected areas to select the best supporting materials and parameters, so as to ensure the economic benefits of mines.