CN102115321B - Material of simulated lunar soil - Google Patents
Material of simulated lunar soil Download PDFInfo
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- CN102115321B CN102115321B CN200910217152A CN200910217152A CN102115321B CN 102115321 B CN102115321 B CN 102115321B CN 200910217152 A CN200910217152 A CN 200910217152A CN 200910217152 A CN200910217152 A CN 200910217152A CN 102115321 B CN102115321 B CN 102115321B
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Abstract
The invention provides a material of simulated lunar soil, which comprises 60-95 wt% of Beijing Zhuzhuang dry silt with a particle size of less than 5 mm and 5-40 wt% of Hebei Lingshou garnet powder with a particle size of less than 5 mm. Compared with existing simulated lunar soil, the simulated lunar soil of the present invention has a filling dry density of 1.45-1.70 g/cm3 and a corresponding internal friction angle of about 40 degree, which can meet the requirements of a stimulated lunar surface test site for lunar rovers. The invention can also meet the requirements of stimulating lunar soil with a middle to small internal friction angle in stimulated lunar surface test sites for lunar rovers, and the raw materials of silt and garnet are readily available, easy to process, and have low price.
Description
Technical field
The invention belongs to moonfall analogue technique field, relate in particular to a kind of silt of certain grain size and formulated simulation lunar soil of pomegranate stone flour of certain grain size of utilizing and use material.
Background technology
According to the document statistics of publishing, up to now, external simulation lunar soil mainly contains the JSC-1 of the U.S., and MLS-1, MLS-2, MKS-1 and FJS-1 be totally five kinds of simulation lunar soil, and domestic CAS-1 simulation lunar soil.
JSC-1 simulation lunar soil is to preside over development by the subordinate's of NASA (NASA) Johnson space center (JSC).JSC-1 is a kind of Irish touchstone matter volcanic debris that is rich in glass, through simply processing.
MLS-1 simulation lunar soil is developed by Univ Minnesota-Twin Cities USA.The parent material of MLS-1 simulation lunar soil is that rich titanium crystalline Irish touchstone about 1,000,000,000 years is appeared for passing through rupture northern bank age of Lake Superior (Lake Superior) of (Mid-Continent Rift) of De Luce (Duluth belongs to the Minnesota State) mid-continental, North America.Through pulverizing, grinding to form particle diameter less than 1mm or thinner particle; Get wherein a part of through the intensification heat-agglomerating processing rapidly of ISSP (In-flightSustained Shockwave Plasma Reactor) technology; With simulation menology meteorite hit process, finally generate glass substance.Glass substance is mixed with 1: 3 (mass ratio) with the Irish touchstone powder, and the MLS-1 that is mixed with simulation lunar soil contains the glass of 25% (also can prepare the simulation lunar soil of other glass content as required), can with 10%～80% glassy phase analogy in the lunar soil.
MLS-2 simulation lunar soil is a kind of lunar highlands lunar soil simulation substance, processes through pulverizing, grinding to sieve for the plagioclasite of mid-continental, De Luce North America fracture, and essential mineral is the plagioclase of An=80 mutually, contains the minute quantity enhydrite.MLS-2 contains higher SiO than MLS-I
2Lower Ti contains higher Al simultaneously.
MKS-I and FJS-I simulation lunar soil are by the space and the development of robot system portion of Japanese clear water Co., Ltd. (Shimizu Corporation); Parent material is a basaltic lava; After grinding and processing, have similar chemical constitution, size-grade distribution and mechanical property, and be all low titanium Irish touchstone matter with Apollo 14 sampled point lunar soil.
Inst. of Geochemistry, Chinese Academy of Sciences Zheng Yongchun etc. consist of the normative reference that seriation simulation lunar soil is developed with the average chemical composition of Apollo and each time of Luna moonfall sampled point lunar soil with average mineral and glass; Use for reference the development experience of JSC-1 simulation lunar soil; Having proposed with Jingyu, Jilin alkalescence Black Warrior matter volcanic cinder is the CAS-1 simulation lunar soil of parent material development, and its principal ingredient is similar with the average chemical composition of the lunar soil sample that Apollo 14 lunar landing point cosmonaut gather.
Though up to the present, development has above-mentioned 6 kinds of simulation lunar soil altogether, mainly is that the lunar soil with two moonfalls of Apollo 11 and Apollo14 sampled point is that target is simulated, and other Apollo and Luna sampled point also have no the proposition of simulation lunar soil.The angle of internal friction of these simulation lunar soil is more than or equal to 45 °; Be suitable in moon landing device landing shock simulation test field, being used as the bigger simulation lunar soil of angle of internal friction, but and be not suitable for the inspection tour prober for moon surface simulation medium simulation lunar soil less than normal of the needed angle of internal friction in lunar surface testing field (the average angle of internal friction of typical lunar soil in 0～60cm depth range is 48 °～51 °).And for the required simulation lunar soil testing field of inspection tour prober for moon surface travelling performance test; Should be according to the relation of inspection tour prober for moon surface travelling performance with simulation lunar soil mechanical property; The characteristics that bigger variation is arranged to moonscape lunar soil physico-mechanical properties with geographic location difference; From relatively safe angle, need suitably pine, the medium simulation lunar soil less than normal of angle of internal friction partially.Based on this, seek a kind ofly to be applicable to that the simulation lunar soil of the inspection tour prober for moon surface simulation needed angle of internal friction in lunar surface testing field medium (being not more than 40 °) less than normal is very necessary.
Summary of the invention
The object of the present invention is to provide the medium simulation lunar soil material less than normal of a kind of angle of internal friction, this material is applicable in the testing field of inspection tour prober for moon surface simulation lunar surface.
Simulation lunar soil material of the present invention in the general assembly (TW) of material, includes following components in weight percentage:
Particle diameter is less than the dry powder soil 60%-95% of 5mm
Particle diameter is less than the pomegranate stone flour 5%-40% of 5mm
In the above-mentioned simulation lunar soil material, the percentage by weight of dry powder soil is preferably 60%-80%.More preferably 80%, particle diameter is preferably less than 2mm; The percentage by weight of pomegranate stone flour is preferably 20%-40%, and more preferably 20%.Particle diameter is preferably less than 2mm.
Wherein, the dry density of filling of simulation lunar soil material is 1.45-1.70g/cm
3, corresponding angle of internal friction about 40 °, preferred 37-40 °.
Compare with existing simulation lunar soil, the dry density of filling of simulation lunar soil of the present invention is 1.45-1.70g/cm
3, corresponding angle of internal friction can satisfy the needs at inspection tour prober for moon surface simulation lunar surface testing field about 40 °.Can satisfy the requirement of the medium lunar soil less than normal of inspection tour prober for moon surface simulation lunar surface testing field simulation angle of internal friction, and silt obtains easily with the garnet starting material, be easy to process, cheap.
Description of drawings
Fig. 1 is the size grading curve of silt and Lingshou pomegranate stone flour.
Fig. 2 is 100% silt direct shear test normal stress and shear stress graph of a relation.
Among the figure, relative density is 79%, and density is 1.55g/cm
3, angle of internal friction is 37 °, cohesive strength is 22kPa.
Fig. 3 is the direct shear test normal stress and the shear stress graph of a relation of the simulation lunar soil material of 80% silt of the present invention, 20% pomegranate stone flour composition.
Among the figure, relative density is 76%, and density is 1.62g/cm
3, angle of internal friction is 39 °, cohesive strength is 7kPa.
Fig. 4 is 80% silt of the present invention, 20% pomegranate stone flour direct shear test normal stress and shear stress graph of a relation.
Among the figure, relative density is 83%, and density is 1.67g/cm
3, angle of internal friction is 38 °, cohesive strength is 18kPa.
Embodiment
Below in conjunction with embodiment invention is elaborated, so that understand content of the present invention better.
Used Beijing silt is taken from Daxing District, Beijing Zhu Zhuan, and the pomegranate stone flour is taken from the Lingshou, Hebei, and the size grading curve of silt and pomegranate stone flour is as shown in Figure 1.
The preparation of embodiment 1 simulation lunar soil material
Adopt Beijing Zhu Zhuan silt, Lingshou, Hebei pomegranate stone flour to prepare the simulation lunar soil.The mean grain size of silt is 0.07mm, and the mean grain size of pomegranate stone flour is 0.08mm, and silt mixes by 80: 20 weight ratio with the pomegranate stone flour, and promptly in the simulation lunar soil, silt accounts for 80% of general assembly (TW), and the pomegranate stone flour accounts for 20%.
The preparation of embodiment 2 simulation lunar soil materials
Adopt and prepare with embodiment 1 identical raw material, wherein the mean grain size of silt is 0.07mm, and the mean grain size of pomegranate stone flour is 0.08mm; Silt mixes by 95: 5 weight ratio with the pomegranate stone flour; Promptly in the simulation lunar soil, silt accounts for 95% of general assembly (TW), and the pomegranate stone flour accounts for 5%.
Wherein, Beijing Zhu Zhuan silt, Lingshou pomegranate stone flour and the hybrid analog-digital simulation lunar soil material of embodiment 1 are measured proportion by " Standard for test methods of earthworks " (GB/T 50123-1999), record the specific gravity of soil partical G of Beijing Zhu Zhuan silt and Lingshou, Hebei pomegranate stone flour
sBe respectively 2.69 and 3.71, the specific gravity of soil partical of simulation lunar soil is 2.85.
Carry out maximum void ratio test and minimum void ratio test by " Standard for test methods of earthworks " (GB/T 50123-1999), measure maximum, minimum void ratio and maximum, the minimum dry density of silt and microlith garnet powder recombined sample, test findings is as shown in table 1.Give the test findings of silt in the table 1.Can know that by table 1 the accessible dry density scope of recombined sample is about (1.16～1.80) g/cm
3
Maximum, minimum dry density and the void ratio of table 1 simulation lunar soil of the present invention material
Hence one can see that, and Beijing accessible dry density scope of Zhu Zhuan silt sample is about (1.16～1.70) g/cm
3(corresponding void ratio is 1.32～0.58).With Beijing Zhu Zhuan silt is main, mixes outward after 5%～20% the pomegranate stone flour, and maximum dry density can be by 1.70g/cm
3Be increased to 1.80g/cm
3(corresponding void ratio is 0.62).Compare with single Beijing Zhu Zhuan silt, mix the simulation lunar soil of pomegranate stone flour and can simulate the bigger lunar soil situation of density.
Wherein, By " Standard for test methods of earthworks " (GB/T 50123-1999); Adopt direct shear test to measure the shearing strength of simulation lunar soil material; The relative density of getting Zhu Zhuan silt and pomegranate stone flour hybrid analog-digital simulation lunar soil sample is 76% and 83%; Measure the size of its angle of internal friction
and cohesive strength c respectively, referring to table 2.
The parameter and the test findings of table 2 silt and pomegranate stone flour hybrid analog-digital simulation lunar soil sample direct shear test
Test shows, Beijing Zhu Zhuan silt is mixed with the pomegranate stone flour, and in the mass ratio of silt and pomegranate stone flour was 95: 5 to 80: 20 scope, the rate of specific gravity of composite material increased with the increase of garnet powder content, but angle of internal friction does not have obvious variation.Because in such proportional range, the skeleton of composite material remains by silt and constitutes, and the pomegranate stone flour that is mixed does not change the shearing-resistance characteristic of composite material sample significantly.
Although the preceding text specific embodiments of the invention has given to describe in detail and explanation; But what should indicate is; Can carry out various equivalences to above-mentioned embodiment according to conception of the present invention changes and modification; When the function that it produced does not exceed spiritual that instructions and accompanying drawing contain yet, all should be within protection scope of the present invention.
Claims (5)
1. simulate the lunar soil material for one kind,, include following components in weight percentage in the general assembly (TW) of material:
Particle diameter is less than the dry powder soil 60%-95% of 5mm
Particle diameter is less than the pomegranate stone flour 5%-40% of 5mm
2. simulation lunar soil material as claimed in claim 1 is characterized in that, in the said simulation lunar soil material, the percentage by weight of dry powder soil is 60%-80%, and the percentage by weight of pomegranate stone flour is 20%-40%, and its particle diameter is less than 2mm.
3. simulation lunar soil material as claimed in claim 2 is characterized in that, the percentage by weight of dry powder soil is 80%, and the percentage by weight of pomegranate stone flour is 20%.
4. like each described simulation lunar soil material of claim 1-3, it is characterized in that the dry density of filling of simulation lunar soil material is 1.45-1.70g/cm
3
5. like each described simulation lunar soil material of claim 1-3, it is characterized in that the angle of internal friction of simulation lunar soil material is 35 °-40 °.
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| CN200910217152A CN102115321B (en) | 2009-12-31 | 2009-12-31 | Material of simulated lunar soil |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101957280A (en) * | 2010-09-29 | 2011-01-26 | 中国科学院国家天文台 | Method for preparing simulative lunar soil |
| CN102589910B (en) * | 2011-12-20 | 2014-11-12 | 北京卫星环境工程研究所 | Lunar soil and lunar appearance simulation system for ground walking test of lunar surface rover and construction method of lunar soil and lunar appearance simulation system |
| CN102967498A (en) * | 2012-12-04 | 2013-03-13 | 中国北方车辆研究所 | Low-gravity simulated lunar soil |
| CN104297007B (en) * | 2014-09-24 | 2017-07-04 | 吉林大学 | For the engineering simulation Mars earth of rover ground experiment |
| CN104729558B (en) * | 2015-03-05 | 2017-05-10 | 北京空间机电研究所 | Method for simulating surface characters of moon |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5315513A (en) * | 1991-10-29 | 1994-05-24 | The United States Of America As Represented By The Secretary Of The Air Force | System for modelling moderate resolution atmospheric propagation |
| CN101452655A (en) * | 2007-12-04 | 2009-06-10 | 北京卫星环境工程研究所 | Synthesis simulation test field for lunar surface landform and environment |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5315513A (en) * | 1991-10-29 | 1994-05-24 | The United States Of America As Represented By The Secretary Of The Air Force | System for modelling moderate resolution atmospheric propagation |
| CN101452655A (en) * | 2007-12-04 | 2009-06-10 | 北京卫星环境工程研究所 | Synthesis simulation test field for lunar surface landform and environment |
Non-Patent Citations (2)
| Title |
|---|
| 郑永春等.CAS-1模拟月壤.《矿物学报》.2007,(第Z1期), * |
| 郑永春等.模拟月壤研制的初步设想.《空间科学学报》.2005,(第01期), * |
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