Preparation and characterization of a specialized lunar regolith simulant for use in lunar low gravity simulation  

作　　者：Ruilin Li Guoqing Zhou Kang Yan Jun Chen Daqing Chen Shangyue Cai Pin-Qiang Mo 

机构地区：[1]State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology,Xuzhou 221116,China [2]School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou 221116,China [3]School of Water Resources and Hydropower Engineering,Wuhan University,Wuhan 430072,China

出　　处：《International Journal of Mining Science and Technology》2022年第1期1-15,共15页矿业科学技术学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.41902273,41772338);the China Postdoctoral Science Foundation(No.2019M661986);the Natural Science Foundation of Jiangsu Province(No.BK20190637);and the Jiangsu Planned Projects for Postdoctoral Research Funds(No.2019K194);support by the State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology(Nos.Z19007,Z19009).

摘　　要：Lunar in-situ resource utilization(ISRU)has been put on the agenda by many countries.Due to the special material nature and low gravity environment,the lunar regolith demonstrates significantly different behavior from terrestrial geomaterials.However,the systematic understanding of its geotechnical behavior is now seriously restricted by the scarcity of lunar regolith and the difficulty in simulating lunar gravity.A new lunar regolith simulant,termed as China University of Mining and Technology Number One(CUMT-1),has been developed to recover properties of the lunar regolith and simulate the lunar gravity by adopting the recently advanced geotechnical magnetic-similitude-gravity model testing(GMMT)method.The CUMT-1 simulant was prepared by reproducing the in-situ formation and fragmentation of the lunar matrix,which plays a key role in the irregular particle morphology.The mineralogical compositions,particle morphology and gradation,specific gravity,bulk density,void ratio,shear strength,and compressibility were determined.After quantifying the magnetization and magnetic-similitude-gravity characteristics,an application of the cone penetration resistance under low gravity was further given.The obtained results are compared to the values known for lunar regolith samples and other simulants,which demonstrates promising characteristics for use in geotechnical engineering-based and scientificbased applications,especially considering the influence of lunar gravity.

关 键 词：Lunar regolith CUMT-1 simulant Low gravity GMMT method ISRU 

分 类 号：P184.5[天文地球—天文学]