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针对白胶煤矿2410底板道运输巷围岩变形严重、支护难度大的问题;依据“高预应力强力支护”理论;采用FLAC3D数值模拟分析2种不同支护设计方案;模拟结果表明,两帮和顶底板移近量分别较少360 mm和240 mm,由此确定2410底板道运输巷支护方案;通过现场试验应用效果分析,试验结果表明,顶底板移近量和两帮收敛量最大值分别是26 mm和21 mm;锚杆、锚索支护范围的围岩稳定、变形量较小;巷道支护效果良好。
According to the theory of “high prestressed strong support”, two kinds of different support designs are analyzed by numerical simulation of FLAC3D. The simulation results show that the surrounding rock of 2410 roadway in Baijiao Mine is seriously deformed and the support is difficult. , The two approaches and the amount of top floor moving closer are less 360 mm and 240 mm, respectively, to determine the 2410 roadway laneway roadway protection program; through the field test application effect analysis, the test results show that the amount of roof and floor move nearly two and convergence The maximum values are 26 mm and 21 mm, respectively. The rock mass in the supporting range of rock bolt and anchor cable is stable and the deformation is small. The effect of roadway support is good.