【作者】
聂家岩；
崔一飞；
Kostas Senetakis；
郭丹；
王瑜；
王国栋；
冯鹏；
贺怀宇；
张徐航；
张小平；
李存惠；
郑虎；
胡伟；
牛富俊；
刘权兴；
李安原；
【Author】
Jiayan Nie;Yifei Cui;Kostas Senetakis;Dan Guo;Yu Wang;Guodong Wang;Peng Feng;Huaiyu He;Xuhang Zhang;Xiaoping Zhang;Cunhui Li;Hu Zheng;Wei Hu;Fujun Niu;Quanxing Liu;Anyuan Li;State Key Laboratory of Hydroscience and Engineering, Tsinghua University;School of Civil Engineering, Wuhan University;Department of Architecture and Civil Engineering, City University of Hong Kong;State Key Laboratory of Tribology, Tsinghua University;Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences;Department of Civil Engineering, Tsinghua University;State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences;State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology;Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institute of Physics;Department of Geotechnical Engineering, College of Civil Engineering, Tongji University;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology;South China Institute of Geotechnical Engineering, South China University of Technology;School of Mathematical Sciences, Shanghai Jiao Tong University;Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province, Shaoxing University;
【通讯作者】
崔一飞;
【机构】
State Key Laboratory of Hydroscience and Engineering, Tsinghua University；
School of Civil Engineering, Wuhan University；
Department of Architecture and Civil Engineering, City University of Hong Kong；
State Key Laboratory of Tribology, Tsinghua University；
Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences；
Department of Civil Engineering, Tsinghua University；
State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences；
State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology；
Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institute of Physics；
Department of Geotechnical Engineering, College of Civil Engineering, Tongji University；
State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology；
South China Institute of Geotechnical Engineering, South China University of Technology；
School of Mathematical Sciences, Shanghai Jiao Tong University；
Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province, Shaoxing University；
【摘要】 随着人类探月工程的快速发展,月球基地建设以及月表资源开发利用有望更快实现.合理预测月壤工程力学性质对于未来深层次探月工程意义重大.我国嫦娥五号返回月球样品为研究月壤工程力学特性提供了直接的实测材料.然而,月球样品极其珍贵,难以满足传统土工试验测试.为了应对这一科学挑战,本研究从无损分析月球样品颗粒属性入手,使用高精度X-射线μCT扫描、三维白光干涉、原子力显微镜等无损测试手段,分析了不同类型月壤颗粒的三维多尺度形态、弹性力学和摩擦属性等指标.在此基础上,基于颗粒材料宏微观物理力学理论和数值模型尝试预测了嫦娥五号采样处月壤残余内摩擦角.本研究为基于月球样品信息跨尺度分析月壤工程力学性质提供了可行思路.更多还原
【Abstract】 With the rapid development of human lunar exploration projects, the lunar base establishment and resource utilization are on the way, and hence it is urgent and significant to reasonably predict engineering properties of the lunar regolith, which remains to be unclear due to limited lunar samples currently accessible for geotechnical tests. In this contribution, we aim to address this outstanding challenge from the perspective of granular material mechanics. To this end, the 3D multi-aspect geometrical characteristics and mechanical properties of Chang’e-5 lunar samples are for the first time evaluated with a series of nondestructive microscopic tests. Based on the measured particle surface roughness and Young’s modulus,the interparticle friction coefficients of lunar regolith particles are well predicted through an experimental fitting approach using previously published data on terrestrial geomaterials or engineering materials. Then the residual friction angle of the lunar regolith under low confining pressure is predicted as 53° to 56°according to the particle overall regularity and interparticle friction coefficients of Chang’e-5 lunar samples.The presented results provide a novel cross-scale method to predict engineering properties of the lunar regolith from particle scale information to serve for the future lunar surface engineering construction.更多还原
【基金】 supported by the National Natural Science Foundation of China (42241109 and 42202297);Tsinghua University Initiative Scientific Research Program (20211080097)
