金星金矿深部巷道岩体质量评价及支护系统优化

Quality Evaluation of Roadway Rock Mass and Optimization of Support System in Jinxing Gold Mine

针对金星金矿深部岩体质量评价及支护系统优化的问题,基于地质力学RMR分级系统,以金星金矿-450 m中段巷道为研究对象,在金星金矿7号脉-450 m中段巷道应用,得出岩体的RMR评分为45,岩体质量属于Ⅲ级,岩性较好。对巷道支护材料选型进行服役效率分析与思考,基于岩体质量分级结果,提出了理论计算与数值模拟结合,选定区域现场工业分级分区多层级支护应用试验,选择最佳的支护材料及参数,以保障矿山经济效益。

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-450 m 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 isⅢand 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 multi-level 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.