Research on Optimization of Roadway Support for Mining Approach of Baixiangshan Iron Mine Panel Area
Under the influence of multi-middle section mining,large area pressure occurs in the min-ing approach of Baixiangshan Iron Mine panel area,which causes serious damage of roadway in some pan ar-eas.In order to ensure the safety and stability of mining roadway in panel area,bolt length,diameter,spac-ing and row spacing are selected as test factors to carry out optimization research on roadway support in pan-el area mining.The 16 schemes are compared and optimized from two aspects of safety and economy.The op-timal parameters of length,diameter,spacing and row spacing of rock bolt in mining approach of GradeⅡsurrounding rock are 1.6 m,18 mm,1.0 m and 1.3 m.The optimal parameters of GradeⅢsurrounding rock are 1.8 m,20 mm,0.9 m and 1.1 m.The optimal parameters of Grade Ⅳsurrounding rock are 2.0 m,20 mm,0.9 m and 1.0 m,and the optimal support scheme reduces deformation and improves economy com-pared with the original support scheme,which contributes to the stability of the roadway.
surrounding rockstressroadway supportoptimization studiesprogram referred
万方数据
维普
