CN-122016577-A - Detection method and preparation method of simulated lunar soil for construction research

CN122016577ACN 122016577 ACN122016577 ACN 122016577ACN-122016577-A

Abstract

The invention discloses a detection method of simulated lunar soil for construction research, which comprises the steps of measuring particle size distribution parameters of a simulated lunar soil sample, calculating the similarity of the particle size distribution parameters of the simulated lunar soil sample and real lunar soil, measuring mineral composition parameters of the simulated lunar soil sample, calculating the similarity of the mineral composition parameters of the simulated lunar soil sample and the real lunar soil, measuring particle shape parameters of the simulated lunar soil sample, calculating the similarity of the particle shape parameters of the simulated lunar soil sample and the real lunar soil, measuring density parameters of the simulated lunar soil sample, and calculating the similarity of the density parameters of the simulated lunar soil sample and the real lunar soil, wherein when the similarity of the particle size distribution parameters, the similarity of the mineral composition parameters, the similarity of the particle shape parameters and the similarity of the density parameters exceed corresponding thresholds, the simulated lunar soil sample passes detection.

Inventors

JI XIAO
FENG PENG
MA ZHONGCHENG
ZHANG DAOBO
WU HAO
Bao Charun
GAO CHUNYONG
LIU YUN
GUO JUNHUA

Assignees

中国建筑材料科学研究总院有限公司
清华大学
中国建材集团有限公司

Dates

Publication Date: 20260512
Application Date: 20241112

Claims (10)

1. A method for detecting simulated lunar soil for construction studies, comprising: measuring the particle size distribution parameters of the simulated lunar soil sample, and calculating the similarity of the particle size distribution parameters of the simulated lunar soil sample and the real lunar soil; Measuring mineral composition parameters of the simulated lunar soil sample, and calculating the similarity of the mineral composition parameters of the simulated lunar soil sample and the real lunar soil; measuring the particle shape parameters of the simulated lunar soil sample, and calculating the similarity of the particle shape parameters of the simulated lunar soil sample and the real lunar soil; Measuring the density parameter of the simulated lunar soil sample, and calculating the similarity of the density parameter of the simulated lunar soil sample and the real lunar soil; And when the particle size distribution parameter similarity, the mineral composition parameter similarity, the particle shape parameter similarity and the density parameter similarity all exceed the corresponding threshold values, the lunar soil simulation sample passes the detection.
2. The method according to claim 1, wherein the particle size distribution parameters include a particle size distribution vector containing a volume percentage of particles having a particle size in each particle size interval in the sample and a section width vector containing a difference between a maximum particle size and a minimum particle size in each particle size interval; Calculating the similarity of particle size distribution parameters by adopting the following formula: Wherein FOM Particle size represents similarity, X Particle size represents a particle size distribution vector of the simulated lunar soil sample, Y Particle size represents a particle size distribution vector of the real lunar soil, W represents a section width vector; Preferably, the particle size distribution vector X Particle size = [ X1, X2, X3, X4, X5, X6] of the simulated lunar soil sample, wherein X1-X6 is the volume percent of particles with the particle sizes of 0-12.5um,12.5-40um,40-70.5um,70.5-115um,115-500um,500-1000um in the sample, Y Particle size = [ Y1, Y2, Y3, Y4, Y5, Y6], wherein Y1-Y6 is the volume percent of particles with the particle sizes of 0-12.5um,12.5-40um,40-70.5um,70.5-115um,115-500um,500-1000um in the real lunar soil, respectively, and W= [12.5,27.5,30.5,44.5,385,500]; preferably, the particle size distribution parameter is measured by measuring a particle size distribution curve of a sample using a particle size analyzer.
3. The method for detecting simulated lunar soil for construction studies according to claim 1, wherein the mineral composition parameters comprise mineral content vectors and the mineral composition parameter similarity is calculated using the following formula: The FOM Mineral material is used for representing similarity, simulating mineral content vector X Mineral material of a lunar soil sample, simulating lunar soil pyroxene content, simulating lunar soil plagioclase content, simulating lunar soil ilmenite content and simulating lunar soil olivine content, and mineral content vector Y Mineral material of a real lunar soil sample, namely, real lunar soil pyroxene content, real lunar soil plagioclase content, real lunar soil ilmenite content and real lunar soil olivine content.
4. The method for detecting lunar soil simulation for construction studies according to claim 1, wherein the particle shape parameters include particle shape vectors, and the similarity of the particle shape parameters is calculated using the following formula: Wherein FOM Granule shape represents similarity, the grain shape vector X Granule shape of the simulated lunar soil sample is = [ simulated lunar soil aspect ratio, simulated lunar soil roundness ]; preferably, the particle shape parameter is determined by identifying SEM electron micrographs of sample particles using image processing, determining aspect ratio and roundness of the particles, and counting a minimum of 2000 particles.
5. The method for detecting simulated lunar soil for construction studies according to claim 1, wherein the density parameter comprises a mineral density vector and the density parameter similarity is calculated using the following formula: Wherein FOM Density of represents similarity, density vector X Density of of simulated lunar soil sample= [ simulated lunar soil density ], density vector Y Density of of real lunar soil sample= [ real lunar soil density ]; The density parameter is determined by measuring the specific gravity of the sample particles by using a pycnometer method.
6. The method for detecting lunar soil simulated by construction research according to claim 1, wherein the threshold values of the particle size distribution parameter similarity, mineral composition parameter similarity, particle shape parameter similarity and density parameter similarity are all 0.95.
7. A method for preparing simulated lunar soil for construction studies, comprising: Grinding the rock raw material to obtain powder with a plurality of granularity ranges; Step two), determining a particle size grading curve of each particle size interval, and then mixing the powder of each particle size interval according to the particle size distribution parameter proportion of the real lunar soil to obtain a simulated lunar soil sample; Step three), the simulated lunar soil sample is detected by adopting the detection method for the simulated lunar soil for construction research in the claim 1, and the simulated lunar soil is obtained when the simulated lunar soil sample passes the detection.
8. The method for preparing simulated lunar soil for construction research according to claim 7, further comprising the step of fourth) when the simulated lunar soil sample does not pass the detection, adjusting the simulated lunar soil sample according to the results of the particle size distribution parameter similarity, the mineral composition parameter similarity, the particle shape parameter similarity and the density parameter similarity; Then repeating the third step and the fourth step) until the lunar soil sample passes the detection; Preferably, the rock material is basalt.
9. Simulated lunar soil for construction studies obtained according to the preparation method of claim 7 or 8.
10. Use of the simulated lunar soil for construction studies according to claim 9 in lunar surface engineering construction studies.

Description

Detection method and preparation method of simulated lunar soil for construction research Technical Field The invention relates to the field of lunar in-situ resource utilization, in particular to a detection method and a preparation method of simulated lunar soil for construction and research. Background With the increasing demand of space exploration, the lunar exploration activities represent a new situation of vigorous development worldwide, and the lunar exploration activities have important significance for promoting the space technology research and driving the national science and technology to develop. The lunar engineering construction can provide a safe environment for the lunar life, scientific research and resource development of astronauts, and is a basic guarantee for the long-term survival and deep development of lunar resources of human beings in the moon. Since a sample of real lunar soil material is difficult to obtain on a large scale, and lunar surface engineering construction studies require a large amount of material to test and verify, a simulated lunar soil material must be used as a substitute in practical studies. The simulation material needs to replicate physical and chemical characteristics of real lunar soil to a certain extent, and meets the large-scale material usage amount required by experiments and verification, thereby playing a key role in lunar engineering research and technical development. However, the development and application of simulated lunar soil materials presents a number of challenges. First, lunar soil itself has complex physical and chemical properties, and its formation is affected by unique lunar environmental conditions. Human knowledge of lunar soil properties is based mainly on limited sampling points and detector data, which results in limitations in knowledge of the lunar soil's overall properties. The simulated lunar soil prepared in the prior art is mainly focused on simulating the particle size distribution of the lunar soil, and the actual physical properties of the lunar soil are greatly different from those of the real lunar soil, so that the requirements of the lunar soil simulation in the engineering construction research of the whole period of time cannot be met. In addition, in the current process of researching and developing the simulation materials, a general simulation similarity quantitative calculation method is lacking, so that the simulation lunar soil used by different research teams has larger difference in performance and consistency. These problems all increase difficulty and uncertainty in simulating lunar soil material research and development, and higher requirements are put on lunar engineering construction research. Disclosure of Invention The invention aims to provide a detection method and a preparation method for simulated lunar soil for construction research, which are used for more accurately simulating physical and chemical properties of real lunar soil so as to facilitate lunar surface engineering construction research. A method of testing simulated lunar soil for construction studies, comprising: measuring the particle size distribution parameters of the simulated lunar soil sample, and calculating the similarity of the particle size distribution parameters of the simulated lunar soil sample and the real lunar soil; Measuring mineral composition parameters of the simulated lunar soil sample, and calculating the similarity of the mineral composition parameters of the simulated lunar soil sample and the real lunar soil; measuring the particle shape parameters of the simulated lunar soil sample, and calculating the similarity of the particle shape parameters of the simulated lunar soil sample and the real lunar soil; Measuring the density parameter of the simulated lunar soil sample, and calculating the similarity of the density parameter of the simulated lunar soil sample and the real lunar soil; And when the particle size distribution parameter similarity, the mineral composition parameter similarity, the particle shape parameter similarity and the density parameter similarity all exceed the corresponding threshold values, the lunar soil simulation sample passes the detection. Optionally, the particle size distribution parameters comprise a particle size distribution vector and a section width vector, wherein the particle size distribution vector comprises the volume percent of particles with the particle size in each particle size section in the sample; Calculating the similarity of particle size distribution parameters by adopting the following formula: Wherein FOM Particle size represents similarity, X Particle size represents a particle size distribution vector of the simulated lunar soil sample, Y Particle size represents a particle size distribution vector of the real lunar soil, W represents a section width vector; Optionally, the particle size distribution vector X Particle size = [ X1, X2, X3, X4,