地外天体取心钻头技术研究进展及关键突破

Research progress and key breakthroughs of coring drill bits for extraterrestrial bodies

摘要:

地外天体钻探是获取地外科学数据的核心手段，取心钻头作为关键部件，受地外极端环境与复杂地层制约，面临诸多技术挑战。本文基于地外天体取心钻头的相关文献调研，以月球、火星、小行星与彗星等典型天体钻探中应用的取心钻头为研究对象，通过分析重力、温度等极端环境特征及地层地质条件对取心钻头可靠性及钻进效率的影响，系统梳理了各类地外天体取心钻头的技术研究进展与工程应用现状。研究表明：现有硬质合金钻头在月球浅层取样中应用效果良好，但难以应对含碎石月壤层及深部月岩；超硬材料钻头地面模拟试验性能优异，但尚未在月球探测任务中实际应用；火星钻探虽已实现硬岩取心，但取心深度有限；小行星与彗星钻探实际应用效果尚未获得充分数据支撑。未来研究重点应围绕超硬耐磨梯度复合材料、复杂地层适应性高效钻进结构等关键方向开展技术攻关。研究成果可为地外天体取心钻头的研发与应用提供理论参考与工程借鉴，支撑深空资源开发利用与地外生命痕迹探测任务的实施。

Abstract:

Drilling on extraterrestrial bodies is a core means to obtain extraterrestrial scientific data. As a key component， the coring drill bit faces numerous technical challenges constrained by extreme extraterrestrial environments and complex stratigraphic conditions. Based on a literature review of extraterrestrial coring drill bits， this paper investigates the coring bits applied in drilling missions for typical celestial bodies， including the Moon， Mars， asteroids， and comets. By analyzing the impacts of extreme environmental characteristics such as gravity and temperature， as well as stratigraphic and geological conditions， on the reliability and drilling efficiency of coring bits， the study systematically reviews the technical research progress and engineering application issues of various extraterrestrial coring bits. The results indicate that existing cemented carbide drill bits perform effectively in shallow lunar sampling but struggle to cope with lunar soil and granule layers and deep lunar rocks. Superhard material drill bits exhibit excellent performance in ground-based simulation experiments but have not yet been practically applied in lunar exploration missions. While hard rock coring has been realized in Mars drilling， the coring depth remains limited； furthermore， the practical application effects of coring drill bits in drilling on asteroids and comets lack sufficient data support. Future research should focus on technological breakthroughs in key areas such as superhard and wear-resistant gradient composite materials and efficient drilling structures adaptable to complex formations. The research results provide theoretical references and engineering guidance for the development and application of extraterrestrial coring drill bits， supporting the implementation of deep space resource exploitation and utilization and extraterrestrial life trace detection missions.