中文摘要：

月球钻探取样具有钻进对象松散、钻机功率小、质量轻、钻进过程无冲洗介质等难点,螺旋钻进因其连续排屑和干式回转钻进的能力,成为最具可行性的月球钻探取样方式之一。为确保在设备能力和月表环境限制下实现深层月壤钻探取样目的,针对月壤/模拟月壤物理力学特性,对螺旋钻探取样过程进行力载特性分析。分析表明,月球钻探具有螺旋叶片宽度窄、回转速度高的特点,可采用钻屑颗粒模式求得临界回转速度,然后选择合理的钻进工艺。螺旋钻进功耗包括钻头切削月壤的功耗和钻进排屑功耗,可根据功耗模型研究各变量对功率的影响规律,从而为钻具结构优化和钻进参数优选提供理论指导。

英文摘要：

Lunar sampling drilling has difficulties of loose drilling object,small power and light quality of drilling tools,as well as no flushing medium during drilling process. Since auger drilling has the characteristics of discharge cuttings continuously and drilling without drilling fluid,it becomes one of the most practicable methods for lunar drilling. To carry out the deep lunar sampling drilling under limited capacity of drilling tools and specific environment of lunar surface,the mechanics and power models during auger sampling drilling are studied,focused on the physical and mechanics characteristics of lunar soil（ and its simulation）. Analysis indicates that,auger driller for lunar sampling has comparatively narrow blade width and high rotational speed,thus the Cuttings Grain model should be employed to compute its critical rotational speed,and select reasonable drilling technology. Auger drilling power includes two parts,which are power for bit cutting lunar soil,and power for cuttings discharge. According to the drilling power model,effects of each variable on total power during lunar sampling drilling can be obtained,so as to provide theoretical guides for optimization of drilling parameters and drilling tools＇ structure.