构造发育断层区内巷道围岩破坏机理与控制

    Failure Mechanism and Control of Roadway Surrounding Rock in Tectonic Development Fault Zone

    • 摘要: 以袁店一矿103采区回风大巷为研究对象,采用FLAC3D模拟地质构造发育断层区内巷道围岩破坏特征,分析了“深-浅耦合控制”、“深-浅耦合+底断面控制”、“深-浅耦合+全断面控制”3种不同方案的控制特点。结果表明:采用“深-浅耦合+全断面控制”,能够更加有效的控制地质构造发育断层区内巷道围岩的变形破坏,取得理想的效果;根据地质构造发育程度,合理选择“深-浅耦合+底断面控制”经济效果更为明显。

       

      Abstract: Taking return air roadway of Yuandian No.1 Mine in 103 mining area as the research object, we simulated the failure characteristics of roadway surrounding rock of geological tectonic development fault zone by FLAC3D, also analyzed the control characteristics of three different schemes: " deep-shallow coupling control ", " deep-shallow coupling + bottom section control " ,"the whole section control + deep-shallow coupling". The results show that "the whole section control + deep-shallow coupling" can more effectively control deformation and failure and achieve the ideal effect; according to the development degree of the geological structure, a reasonable choice of "bottom section control + deep-shallow coupling" will get more obviously economic effect.

       

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