粉矿岩体巷道锚喷网支护措施数值模拟研究

摘要

根据金山店铁矿粉状矿体巷道围岩支护特征、围岩变形机制对该矿的围岩环境进行数值模拟.在FIAC3D的后台上自定义Poyting - thomson本构模型.通过初始设计的锚喷支护方案的对比和总结,提出可以改进的支护参数设计方案,经过调整支护参数得到优化的支护方案.该分析方法可以运用于其他矿山巷道选择合适支护方式并加以分析改进,具有经济、简单、后处理能力强等优势.%According to the wall-rock supporting features and wall-rock deformation mechanism of powder ores' rock tunnel in Jinshandian Iron Mine,the numerical simulation on the wall-rock surroundings is made.And the poyting-thomson constitutive model is defined based on FLAC3D background.Through the contrast and summary on the bolting shotcrete support schemes that are initially designed, the optimal supporting proposal is obtained through the adjusting supporting parameters.This method can be applied in the other mining tunnel to select the appropriate supporting and then to be improved.It has advantages of low-cost, simplicity, high capacity of post-processing.