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千米深井软岩巷道“让控”支护数值模拟及工程应用

Numerical Simulation and Engineering Application of Yielding Control Supporting in Soft Rock Roadway of 1 000 m Deep Well

  • 摘要: 针对千米深井软岩巷道的支护问题,运用数值模拟方法并结合现场工业实践对星村煤矿-1 196 m辅助进风大巷的稳定性进行研究。重点分析了不同支护方案的应力场、位移场和塑性区的演化规律,并进行了现场应用试验。结果表明:对深部高应力软岩巷道采取“让控”支护可减小巷道应力集中程度和变形量;“让控”支护措施应用效果良好,可保持围岩的长期稳定。研究结论对指导深部高应力软岩巷道支护工程具有一定的指导意义。

     

    Abstract: In view of the support problem of soft rock roadway in 1 000 m deep well, the stability of -1 196 m auxiliary wind roadway in Xingcun Coal Mine was studied by using numerical simulation method combined with field industrial test. The evolution law of stress field, displacement field and plastic zone of different supporting schemes were analyzed, and field application tests were carried out. The results show that the degree of stress concentration and roadway deformation can be reduced with the yielding control supporting technology for deep high stress soft rock roadway; the yielding control supporting measures are well applied and can maintain the long-term stability of surrounding rock. The research conclusion has certain guiding significance to guide the supporting engineering of deep high stress soft rock roadway.

     

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