史文豹, 周 伟, 李振福, 彭行球. 锚杆钻头钻进砂岩的响应特性研究[J]. 煤矿安全, 2021, 52(4): 85-88.
    引用本文: 史文豹, 周 伟, 李振福, 彭行球. 锚杆钻头钻进砂岩的响应特性研究[J]. 煤矿安全, 2021, 52(4): 85-88.
    SHI Wenbao, ZHOU Wei, LI Zhenfu, PENG Xingqiu. Study on response characteristics of bolt bit drilling into sandstone[J]. Safety in Coal Mines, 2021, 52(4): 85-88.
    Citation: SHI Wenbao, ZHOU Wei, LI Zhenfu, PENG Xingqiu. Study on response characteristics of bolt bit drilling into sandstone[J]. Safety in Coal Mines, 2021, 52(4): 85-88.

    锚杆钻头钻进砂岩的响应特性研究

    Study on response characteristics of bolt bit drilling into sandstone

    • 摘要: 通过试验研究了锚杆钻头在砂岩中钻进时的声压级、位移曲线、纵向振动和岩屑尺寸的响应特性。试验结果表明:在高强度砂岩中钻进时,声压级和纵向振动较大,与岩屑颗粒和钻速成反比;磨损钻头在砂岩中钻削时,钻进效率的降低更为明显;因此,通过优化钻头结构,使破碎的岩块尽早流出锚固孔,避免岩屑堆积堵塞钻孔,从而提高钻进效率。

       

      Abstract: The response characteristics of sound pressure level, displacement curve, longitudinal vibration and cuttings size of anchor bit during drilling in sandstone are studied by experiments. The experimental results showed that the sound pressure level and longitudinal vibration are larger during drilling in high strength sandstone, which is inversely proportional to cuttings grain and drilling speed. The decrease of drilling efficiency is more obvious when the abrasion bit is drilling in sandstone. Therefore, by optimizing the bit structure, the broken rock blocks can flow out of the anchorage hole as early as possible to avoid the accumulation of rock debris blocking the borehole and improve drilling efficiency.

       

    /

    返回文章
    返回