基于月壤物理力学特性的单齿破壤机理

发布时间：2018-07-02 07:47

本文选题：月壤物理力学特性 + 破壤机理　；参考：《地质科技情报》2014年04期

【摘要】：单齿破壤机理的研究是太空取样钻头研发非常重要和迫切的任务,是实现中国三期探月工程的月表钻进取样要求的重要研发基础。分析了反映月壤物理力学特性的主要参数及其之间的相关性及变化趋势,初步确定了2.5m深度内月壤物理力学的参数范围;基于月壤物理力学特性和月表钻进的钻进工艺分析,得出表层钻进和浅层钻进时月壤的破坏形式不同于土的掘削失效模型,主要是回转剪切破坏;提出了土的回转剪切力学模型,推导回转切削土阻力矩公式;得出阻力矩主要与钻头直径和切削刃宽度、月壤的容重和钻进深度等相关,并对其相关性进行了分析说明。
[Abstract]:The research on the mechanism of single tooth soil breaking is an important and urgent task for the research and development of space sampling bit. It is also an important research and development foundation to realize the requirement of surface drilling sampling in the third phase of lunar exploration project in China. The main parameters reflecting the physical and mechanical properties of lunar soil and their correlation and variation trend are analyzed, and the range of physical and mechanical parameters of lunar soil within 2.5 m depth is preliminarily determined, and the drilling technology of lunar soil is analyzed based on the physical and mechanical properties of lunar soil and the drilling technology of lunar surface drilling. The failure mode of lunar soil during surface drilling and shallow drilling is different from the failure model of soil excavation, which is mainly caused by rotary shear failure, and the rotary shear mechanics model of soil is put forward, and the formula of resistance moment of rotary cutting soil is derived. It is concluded that the resistance moment is mainly related to bit diameter, cutting edge width, bulk density of lunar soil and drilling depth, and the correlation is analyzed and explained.
【作者单位】：中国地质大学工程技术学院;中国地质大学国土资源部深部地质钻探技术重点实验室;北京卫星制造厂;
【基金】：中央高校基本科研项目(2652013045)
【分类号】：P184.5;P634.5

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