仿生冲击挤密钻头的研究

Research on bionic impact compacting bits

为了提高冲击挤密钻头的进尺速度和降低冲击损耗,基于仿生非光滑理论设计了仿生冲击挤密钻头,通过数值模拟分析揭示其破土受力特性,制备出仿生冲击挤密钻头并进行试验。以自然界生物蜣螂为仿生原型,在冲击挤密钻头表面有规律地布置凸包非光滑形态,并进行相关实验,结果表明:与同尺寸的常规冲击挤密钻头相比,仿生冲击挤密钻头的单次冲击进尺提高约45%,单位进尺所需冲击能量下降46.8%,可大幅缩短冲击挤密钻孔的钻孔周期、节约钻孔成本,社会和经济效益显著。

Bionic percussion-compact bits based on the theory of bionic nonsmooth was designed in order to improve the percussion-compact bits penetration rate and reduce the loss of impact. Through the numerical simulation analysis, the ground stress characteristics were revealed, then the bits were produced and used to do the field experiments. Biological dung beetle wastaken as bionic prototype, and regularly nonsmooth morphology shape was decorated on the percussion-compact bits＇ surface, and then the related tests were conducted. The results are that of single impact penetration bionic percussion-compact bits increased by about 45% compared with the conventional percussion-compact bits, and the impact energy needed for unit footage fell by 47%. the impact compaction borehole drilling cycle can be greatly shortened, and the cost of drilling is reduced and social and economic benefit are remarkable.