复杂围岩地质条件下巷道支护参数研究

Roadway support parameters under complex surrounding rock geological conditions

  • 摘要: 【目的】以唐阳煤矿432皮带顺槽为研究对象,432皮带顺槽非生产帮临近431采空区、巷道上方临近-520皮带大巷且围岩地质情况较为复杂。【方法】采用理论分析与数值模拟,明确工作面应力环境,得出合理煤柱宽度、巷道安全间距;优化支护参数与方案,确定不同区域巷道的锚杆、锚索参数及布置方式。【结果】经432皮带顺槽现场监测,验证支护效果良好,有效控制巷道围岩变形,保障了工作面安全高效生产。【结论】该研究对增强复杂区域支护强度、优化巷道支护具有重要意义。

     

    Abstract: The 432 belt crossheading of Tangyang Coal Mine is taken as the research object.The non-production side of the 432 belt crossheading is close to the 431 goaf, the upper part of the roadway is close to the-520 belt roadway, and the geological conditions of the surrounding rock are more complicated.Using theoretical analysis and numerical simulation, the stress environment of the working face is clarified, the reasonable coal pillar width and the safe spacing of the roadway are obtained; we optimize the support parameters and schemes, and determine the parameters and layout of bolts and anchor cables in different areas.Through on-site monitoring of 432 belt crossheading, it is verified that the support effect is good, the deformation of surrounding rock of roadway is effectively controlled, and the safe and efficient production of working face is guaranteed.

     

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