In view of the serious deformation and failure of broken surrounding rock roadway and the difficulty of traditional support technology to control the stability of surrounding rock,No.93 下 11 tromsport roadway of Jining No.2 Mine was taken as the engineering background.According to the results of the ground stress test and drilling peeping,the technical parameters of the original support scheme were optimized,and the support technical parameters were determined by numerical calculation.The results of field practice showed that:after adopting the optimization support scheme,the maximum deformation of roadway roof,two sides and floor was 55 mm,76 mm and 24 mm respectively.The application effect was good,and the stability of broken surrounding rock roadway was effectively controlled.
关键词
破碎围岩/变形机理/钻孔窥视/优化支护
Key words
fractured perimeter rock/deformation mechanism/borehole peeping/optimization support
维普
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