大直径逃生钻孔施工工艺及应用研究

Construction Technology and Application of Large-diameter Escape Boreholes

通过总结矿山现有紧急避险逃生设施的建设特点,结合国内外技术发展分析我国矿山紧急避险逃生设施需要改进方向,提出地面大直径钻孔作为新型逃生通道。以布尔台煤矿为应用试点,分析了大直径钻孔合理的布设位置,对大直径钻孔施工工艺和技术特点进行了应用性研究,对护壁管的稳定性进行了校核,为大直径钻孔的安全施工提供参考依据。

The paper analyzes the improvement of the emergency and escape equipment in mines and proposes large-diameter boreholes as a new escape passage,based on the summary of current construction features and development at home and aboard.Taking Bu＇ertai mine as the trial location,we studied the rational layout of the boreholes,conducted the applied research on borehole construction techniques and technology features,and checked the stability for the wallprotecting pipes,which could be for reference in the safe construction of the large-diameter boreholes.