CN105300768B - A kind of superelevation compactness simulative lunar soil prepares and detection method - Google Patents
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- 239000002689 soil Substances 0.000 title claims abstract description 195
- 238000001514 detection method Methods 0.000 title claims abstract description 36
- 239000000203 mixture Substances 0.000 claims abstract description 38
- 239000002245 particle Substances 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 238000005056 compaction Methods 0.000 claims abstract description 19
- 238000004088 simulation Methods 0.000 claims abstract description 19
- 238000002360 preparation method Methods 0.000 claims description 15
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 12
- 239000011707 mineral Substances 0.000 claims description 12
- 101710031899 moon Proteins 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 11
- 238000004458 analytical method Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 238000000643 oven drying Methods 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 210000001847 Jaw Anatomy 0.000 claims description 2
- 229910052639 augite Inorganic materials 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 230000000704 physical effect Effects 0.000 claims description 2
- 229910052655 plagioclase feldspar Inorganic materials 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- -1 relative compaction Substances 0.000 claims description 2
- 239000011800 void material Substances 0.000 claims description 2
- 238000004876 x-ray fluorescence Methods 0.000 claims description 2
- 230000004069 differentiation Effects 0.000 claims 1
- 230000005484 gravity Effects 0.000 claims 1
- 229910052609 olivine Inorganic materials 0.000 claims 1
- 239000010450 olivine Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 240000007817 Olea europaea Species 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Abstract
A kind of superelevation compactness simulative lunar soil prepares and detection method, simulative lunar soil test flume (3) is built first to be placed on three-dimensional vibrating platform (1), and fastening is fixed, then particle shape alkaliolivinebasalt is chosen as simulative lunar soil raw material and to be mixed, obtain simulative lunar soil, repeatedly simulative lunar soil is weighed to be filled into simulative lunar soil test flume (3), superelevation compactness simulative lunar soil is obtained using three-dimensional vibrating platform (1) and counterweight (4) vibration, finally measures simulative lunar soil relative compaction to judge whether the lunar soil prepared is up to standard.The method of the present invention is prepared and is mixed by simulative lunar soil grain composition, solve the problems, such as that simulative lunar soil has differences with practical lunar soil in size grading, realize the high equivalent simulation of simulative lunar soil particle size distribution, in addition, the present invention realizes parameter index and quantifies controllable purpose by the detection to simulative lunar soil key characteristic parameter set and index system.
Description
Technical field
The present invention relates to space resources detection technology field, especially a kind of superelevation compactness simulative lunar soil prepares and detection
Method.
Background technology
The mankind are directed to the activity that the moon is carried out, and such as lunar orbiting exploration is landed on the moon, lands on the moon and carried out on the moon each
Kind detected event, all there is close contact with lunar soil.Before correlation detection activity on carrying out the moon, human needs are on ground
A large amount of experimental study is carried out on ball, and earth soil is deposited with lunar soil on chemical composition, mineral composition and physico-mechanical properties
In this qualitative difference.Therefore, it is required to simulate the simulative lunar soil material of typical lunar soil main character on earth.
There is practical lunar soil superelevation compactness (the following relative compactions of depth 0.6m close to 100%), big angle of friction, height to cut
The physico mechanical characteristics such as swollen property directly determine the design (calculated) load boundary of moon Sample acquisition device.With the hair of moon exploration program
It opens up and deepens continuously, China has been completed the developments of several simulative lunar soils, and Research Institute of Geology, China Earthquake Administration is mainly chemically
Ingredient, mineral composition, shear resistance and microwave dielectric property etc. have developed simulative lunar soil；Geochemistry institute of the Chinese Academy of Sciences,
State Astronomical Observatory, CAS completes " low titanium basaltic simulative lunar soil standard sample certificate " (GSB 01-2186-2008),
It is named as CLRS-1, and " high titanium basaltic simulative lunar soil standard sample certificate " (GSB 01-2187-2008), is named as
CLRS-2.But above-mentioned simulative lunar soil and preparation method there are not the key parameters such as size grading, relative compaction and physical mechanics
There are strict demand and control, and there is no detection method, causes simulative lunar soil to be had differences at above-mentioned aspect with true lunar soil, simultaneously
It cannot achieve the equivalence of the mechanics parameters such as superelevation relative compaction and big internal friction angle.
Invention content
Present invention solves the technical problem that being：One kind has been overcome the deficiencies of the prior art and provide by simulative lunar soil particle
Grading is prepared and is mixed, and solves the problems, such as that simulative lunar soil has differences with practical lunar soil in size grading, Jin Ershi
The superelevation compactness simulative lunar soil for having showed the high equivalent simulation of simulative lunar soil particle size distribution prepares and detection method.
Technical solution of the invention is：A kind of superelevation compactness simulative lunar soil prepares and detection method, including as follows
Step：
A, it is fixedly connected between N sections of every section of simulative lunar soil test flumes, is then placed on vertically on three-dimensional vibrating platform,
In, N is positive integer；The simulative lunar soil test flume is hollow cylinder；
B, the simulative lunar soil test flume being placed in three-dimensional vibrating tabletop of platform is fixed, and uses positioning and fastening
Device fastens；The positioning is bandage locking mechanism with clamp device；
C, it chooses particle shape alkaliolivinebasalt as simulative lunar soil raw material and to be mixed, obtains the simulation moon
Earth；The particle shape alkaliolivinebasalt include angular, subangular alkaliolivinebasalt；
D, quality m is weighedjSimulative lunar soil be filled into simulative lunar soil test flume, then simulative lunar soil surface is smoothed out,
Jth section simulative lunar soil test flume is set to fill up, wherein the initial value of j is 1, j=1,2,3 ... N；The mjTo fill up the simulation of jth section
The quality for the simulative lunar soil that lunar soil test flume needs；
E, counterweight is placed in simulative lunar soil test flume, test flume mouth is covered with dust-proof pocket；
F, it enables three-dimensional vibrating platform vibrate in above-below direction first, then shakes simultaneously in left and right, front and back, upper and lower three directions
It is dynamic, it measures after vibrating from first segment to the total height h' of jth section simulative lunar soil；
G, according to density p after the simulative lunar soil height h' calculating simulation lunar soil vibration after vibrationdFor
Wherein, D is simulative lunar soil test flume internal diameter；
If density p after simulative lunar soil vibrationdReach the maximum dry density of simulative lunar soil, then terminates vibration, otherwise continue
It is vibrated simultaneously in tri- directions X, Y, Z, until density p after simulative lunar soil vibrationdReach the maximum dry density of simulative lunar soil；
H, j=j+1 repeats step d~g, until j=N；
I, simulative lunar soil relative compaction D is measured using quality volumetric methodrFor
Wherein,hAlwaysFor simulative lunar soil total height in N sections of simulative lunar soil test flumes after the completion of vibration, work as mould
When the size grading ratio of 5mm or more is not more than 6% in quasi- lunar soil, ρ 'd max=ρd max, ρ 'd min=ρd min, ρd maxFor simulation
Lunar soil maximum dry density, ρd minFor simulative lunar soil experimental relationship, when the size grading ratio of 5mm or more in simulative lunar soil is more than
When 6%,
Wherein, ρ5The grain density for being 5mm or more for grain size in simulative lunar soil, P5For the grain size of 5mm or more in simulative lunar soil
Grading ratio, if simulative lunar soil relative compaction DrIt more than 100%, then prepares up to standard, otherwise prepares not up to standard.
The N is 4.
The outer diameter of the simulative lunar soil test flume is 520mm, and internal diameter is the hollow cylinder of 500mm, N sections of total lengths
2.5m。
Grain diameter accounts for 13.51% less than 0.01mm in the particle shape alkaliolivinebasalt, in 0.01-
11.99% is accounted between 0.025mm, 12.83% is accounted between 0.025-0.05mm, accounting between 0.05-0.075mm
8.24%, 5.53% is accounted between 0.075-0.1,14.2% is accounted between 0.1-0.25mm, between 0.25-0.5
10.2% is accounted for, 8.5% is accounted between 0.5-1mm, 15% is accounted for more than 1mm.
The time that the three-dimensional vibrating platform vibrates in above-below direction first is 5 minutes, controls, is front and back, three upper and lower
The time that direction vibrates simultaneously is 15 minutes.
The frequency of the three-dimensional vibrating Platform Vibration is 30Hz.
The advantages of the present invention over the prior art are that：
(1) the method for the present invention solves simulative lunar soil by using alkaliolivinebasalt as simulative lunar soil raw material
With practical lunar soil the problem of chemical composition, mineral composition and water content have differences, chemical composition and mineral composition are realized,
And the high equivalent simulation of dried over anhydrous state；
(2) the method for the present invention is prepared and is mixed by simulative lunar soil grain composition, solves simulative lunar soil and reality
Lunar soil realizes the high equivalent simulation of simulative lunar soil particle size distribution the problem of being had differences in size grading；
(3) method that the method for the present invention is compacted by quantitative placement in layers, three-dimensional vibrating, mechanism class is actually formed with lunar soil
Seemingly, it solves the problems, such as that high solidity simulative lunar soil can not be prepared, depth 2m or more, 100% superelevation compactness can be obtained
Simulative lunar soil realizes true deep lunar soil section equivalent simulation；
(4) the method for the present invention realizes parameter by the detection to simulative lunar soil key characteristic parameter set and index system
The controllable purpose of quantification of targets.
Description of the drawings
Fig. 1 is simulative lunar soil of the present invention preparation and detection method principle flow chart；
Fig. 2 is simulative lunar soil of the present invention preparation and detection methodologies frame diagram；
Fig. 3 is that simulative lunar soil grading of the present invention is prepared and fills compacting implementing procedure figure；
Fig. 4 is that simulative lunar soil three-dimensional vibrating of the present invention is compacted implementation figure.
Specific implementation mode
The present invention relates to a kind of preparation of superelevation compactness simulative lunar soil and detection methods, being capable of the high true lunar soil of equivalent simulation
Chemical composition, particle shape, grain composition and superelevation compactness, big angle of friction, high cohesion, the physical forces such as high dilatancy
Characteristic is learned, it, can be with present invention could apply to moon landing, moonfall and the movable ground experiment research of various Sample acquisitions
The preparation and detection for being applied to other simulation star earth are expanded, space resources detection technology field is belonged to.
The present invention is described in further detail with reference to the accompanying drawings and examples.
It is as shown in Figure 1 simulative lunar soil preparation and detection method principle process, including：
(1) lunar soil specificity analysis is determined with analogy method
The analysis lunar soil characteristic of system, including lunar environment, the moon formed develop, lunar soil composition with and physical property, go through
The menology section chemical composition of secondary landing point, mineral composition, relative compaction, particle shape, grain diameter grading, dry density,
Property establishes deep lunar soil section model, specifies complete key characteristic parameter set and index system, determines void ratio, aqueous
Major parameter index of the physical and mechanical parameters such as amount, internal friction angle and cohesive force as simulation.
(2) preparation and detection of simulative lunar soil raw material
Simulative lunar soil raw material choose alkaliolivinebasalt and basalt volcanic breccia, by augite, plagioclase, olive
Stone, magnetic iron ore and glass composition, have similar chemical composition and mineral composition with practical lunar soil.The processing of raw material is mainly wrapped
Include it is broken with sieve in two steps, the raw material of acquisition are subjected to preliminary crushing using jaw crusher first, then use Raymond mill into
Row finishing ensures that raw material angular is consistent with true lunar soil with the particle shape of subangular；Using with not after crushing
Standard screen with sieve pore scale and mesh number is sieved, and particle needs to separate 10mm or more, 1-10mm, 16-150 mesh (0.1-
1mm), 150-180 mesh (0.08-0.1mm), 200-240 mesh (0.061-0.075mm), 300-500 mesh (0.025-0.05mm),
More than 500 mesh (<0.025mm), ensure that grain diameter meets classification and requires.
Processing is dried with raw material to be put into baking oven drying in batches after the completion of screening, and drying temperature is controlled in 105-110
Between DEG C, drying time is controlled in 8h or more, and final moisture content is less than 0.4%, with the state of simulative lunar soil dried over anhydrous.
This stage finally carries out simulative lunar soil raw material detection, is utilized respectively electron-microscope scanning method, laser particle size method, ratio
Weight bottle method, Electric heat oven oven drying method, x-ray fluorescence analysis, BSE image methods carry out particle shape, grain diameter, proportion, aqueous
Rate, chemical composition, mineral composition test, realize that the equivalent degree quantization of key parameter is controllable.
(3) preparation and detection of complete section face simulative lunar soil
The preparation of complete section face simulative lunar soil is divided into grain composition and prepares, fills three step of compacting and nature examination.Grain composition
It prepares using the method being mixed, the simulative lunar soil of different-grain diameter is stirred according to proportioning, was fully stirred by 15 minutes
It mixes uniformly, ensures that grain composition proportioning is equivalent with true lunar soil.The compacting of filling of simulative lunar soil is actually formed mechanism class with lunar soil
Seemingly, the method being compacted using quantitative placement in layers, three-dimensional vibrating is often laid with a certain amount of simulative lunar soil and carries out a three-dimensional vibrating pressure
It is real, the objects such as depth 2m or more, 100% superelevation relative compaction, and big angle of friction, high cohesion, high dilatancy can be obtained
Mechanical characteristic is managed, is ensured equivalent with true lunar soil；Complete section face simulative lunar soil nature examination is finally carried out, using on-line checking and reality
The method that room standard detection is combined is tested, compacting is filled using quality volume on_line detection method real-time control and detection simulative lunar soil
Relative compaction, and be utilized respectively triaxial shear test, vibration hammering method, graduated cylinder roll back method, core cutter method carry out angle of friction, interior
The detection of poly- power, maximum dry density, experimental relationship, dry density in situ, realizes that the quantization of physical and mechanical parameter is controllable.
Fig. 2 indicates simulative lunar soil preparation and detection methodologies frame diagram, wherein prepares and detection method is divided into lunar soil spy
Property analysis, analogy method be determining, raw material processing prepares with screening, raw material detection, grain composition, fills compacting, mould
The key steps such as quasi- lunar soil nature examination realize lunar soil chemical composition, mineral by the processing and screening of simulative lunar soil raw material
The high equivalent simulation of the parameter indexes such as composition, particle shape, water content；It is prepared by simulative lunar soil grain composition, realizes lunar soil
The high equivalent simulation of particle size distribution；Placement in layers, three-dimensional vibrating compacting and detection are quantified by simulative lunar soil, realizes superelevation
Compactness, big angle of friction, high dilatancy, the high equivalent simulation of the above deep lunar soil section physico mechanical characteristics of depth 2m；Pass through
Detection to simulative lunar soil key characteristic parameter set and index system realizes parameter index and quantifies controllable purpose.
Fig. 3 indicates that simulative lunar soil grading is prepared and fills compacting implementing procedure, and Fig. 4 indicates the compacting of simulative lunar soil three-dimensional vibrating
Implementation, wherein including three-dimensional vibrating platform 1, the positioning of simulative lunar soil test flume and clamp device 2, simulative lunar soil test flume
3, counterweight 4, grading preparation as shown in Figure 3 and the specific implementation process for filling compacting are as follows：
(1) simulative lunar soil test flume 3 is the hollow cylinder of outer diameter Φ 520mm, internal diameter Φ 500mm, and overall length 2.5m is divided into 4
Section, between every section by flange be bolted, test flume flange plate bolt is disassembled with spanner, by 2 under test flume
A segment links together, and is placed on three-dimensional vibrating platform 1；
(2) test flume being placed on 1 table top of three-dimensional vibrating platform is fixed, positioning is used in combination (to be tied up with clamp device 2
Locking locking structure) tightening simulation lunar soil test flume 3；
(3) simulative lunar soil raw material are alkaliolivinebasalt, and particle shape is angular and subangular, grain size composition
It accounts for 13.51%, 0.01-0.025mm and accounts for 11.99%, 0.025-0.05mm to be less than 0.01mm and account for 12.83%, 0.05-
0.075mm, which accounts for 8.24%, 0.075-0.1 and accounts for 5.53%, 0.1-0.25mm and account for 14.2%, 0.25-0.5, accounts for 10.2%, 0.5-1mm
8.5% is accounted for, is more than 1mm grain sizes 15%, electronic scale weighs the simulative lunar soil 213.3kg that has been mixed, and (numerical value is basis
The minimax dry density for filling required relative compaction and simulative lunar soil used is sought knowledge density, then is asked with every layer of control height
Go out what then volume calculated), and quality m is recorded, it is filled into simulative lunar soil test flume 3；
(4) simulative lunar soil surface is smoothed out with scoop；
(5) simulative lunar soil three-dimensional vibrating compacting implementation is to hang in and put in simulative lunar soil test flume 3 as shown in Figure 4
Counterweight 4 is set, vibrating compacting efficiency can be improved；
(6) test flume mouth is covered with dust-proof pocket, to prevent dust pollution；
(7) three-dimensional vibrating platform 1 is opened, Z first (upper and lower) direction vibration 5 minutes, frequency 30Hz, then X (left and right), Y
Three (front and back), Z (upper and lower) direction vibrators are all turned on, and three direction vibration frequencies are adjusted to 30Hz.Vibrate 15min
Afterwards, the simulative lunar soil height h ' after vibration is measured；
(8) according to the simulative lunar soil height h ' after vibration, according to the relationship of quality and density：
In formula, m is the deep layer simulative lunar soil quality of input, ρdDensity after being vibrated for simulative lunar soil, V vibrate for simulative lunar soil
Volume afterwards, D are 3 internal diameter of simulative lunar soil test flume, and h' is the height after simulative lunar soil vibration.
When reaching superelevation relative compaction 100%, i.e., simulative lunar soil density reaches maximum dry density, i.e. ρd=ρd max
(ρd maxIndicate the maximum dry density of simulative lunar soil), then it is obtained by formula (1)
When meeting formula (2) after the simulative lunar soil height for measuring filling is shaken, then the relative compaction of present day analog lunar soil
Reach 100%, can terminate, otherwise continued vibrating compacting 5min, height will be measured and remembered with reference records such as time of vibration
It records in table.
(9) repeat the 3rd~8 rapid operation, fill when filling 2 sections of test flumes, lifting next section of test flume of installation, continue into
Filling for row deep layer simulative lunar soil works with vibrating compacting, until completing the preparation of complete section face simulative lunar soil；
(10) simulative lunar soil relative compaction is finally measured using quality volumetric method.According to《Standard for test methods of earthworks》
Relative compaction formula (3) in (GB/T 50123-1999)：
In formula, ρd maxFor simulative lunar soil maximum dry density, ρd minFor simulative lunar soil experimental relationship, DrFor simulative lunar soil phase
To compactness, convolution (1), calculating current relative compaction is
In formula, mAlwaysFor deep layer simulative lunar soil gross mass, hAlwaysSimulative lunar soil total height in test flume after for vibration.Finally
The relative compaction result D of calculatingrIf it is greater than 100%, then prepare it is up to standard, it is on the contrary then do not reach superelevation relative compaction
It is required that.
Wherein, triaxial shear test, vibration hammering method, graduated cylinder roll back method, ring have been utilized respectively in laboratory in the present invention
The skill in using a kitchen knife in cookery completes the detection (reference of angle of friction, cohesive force, maximum dry density, experimental relationship, dry density in situ《Soil test side
Method standard》), but if the size grading ratio of 5mm or more is more than 6% in simulative lunar soil, need to utilize tested operating mode 5mm
The maximum dry that revised all grades are calculated in maximum dry density below, experimental relationship and correction formula (5), (6) is close
Degree, experimental relationship.
In formula, V5For the particle volume of grain size 5mm or more, VdFor grain size 5mm particle volumes below, ρ5For grain size 5mm with
On grain density, P5For the size grading ratio of 5mm or more.
The present invention be capable of the chemical composition of the high true lunar soil of equivalent simulation, mineral composition, particle shape, grain composition and
The physico mechanical characteristics such as 100% superelevation compactness, big angle of friction, high cohesion, high dilatancy, it is comprehensive to reflect that deep lunar soil cuts open
Region feature is of great significance to the Research And Engineering experiment of moon exploration.
The content that description in the present invention is not described in detail belongs to the known technology of those skilled in the art.
Claims (2)
1. a kind of superelevation compactness simulative lunar soil prepares and detection method, it is characterised in that include the following steps：
(1) lunar soil specificity analysis is determined with analogy method
The analysis lunar soil characteristic of system, including lunar environment, the moon form differentiation, lunar soil composition and physical property, all previous landing
Menology section chemical composition, mineral composition, relative compaction, particle shape, grain diameter grading, the dry density property of point, build
Vertical deep lunar soil section model, specifies complete key characteristic parameter set and index system, determines void ratio, water content, interior rubs
Wipe the major parameter index of angle and cohesive force physical and mechanical parameter as simulation；
(2) preparation and detection of simulative lunar soil raw material
Simulative lunar soil raw material choose alkaliolivinebasalt and basalt volcanic breccia, by augite, plagioclase, olivine,
Magnetic iron ore and glass composition, have similar chemical composition and mineral composition, the processing of raw material includes mainly with practical lunar soil
The raw material of acquisition in two steps, are carried out preliminary crushing, then carry out using Raymond mill by broken and sieve using jaw crusher first
Finishing ensures that raw material angular is consistent with true lunar soil with the particle shape of subangular；Using with difference after crushing
Sieve pore scale and the standard screen of mesh number are sieved, and particle needs to separate 10mm or more, 1-10mm, 16-150 mesh, 150-180
Mesh, 300-500 mesh, more than 500 mesh, ensures that grain diameter meets classification and requires at 200-240 mesh；
Raw material are put into baking oven drying in batches after the completion of processing and screening to dry, drying temperature control 105-110 DEG C it
Between, drying time is controlled in 8h or more, and final moisture content is less than 0.4%, with the state of simulative lunar soil dried over anhydrous；
This stage finally carries out simulative lunar soil raw material detection, is utilized respectively electron-microscope scanning method, laser particle size method, specific gravity bottle
Method, Electric heat oven oven drying method, x-ray fluorescence analysis, BSE image methods carry out particle shape, grain diameter, proportion, moisture content, change
It studies point, the test of mineral composition, realizes that the equivalent degree quantization of key parameter is controllable；
(3) preparation and detection of complete section face simulative lunar soil
The preparation specific implementation process of complete section face simulative lunar soil is as follows：
A, it is fixedly connected, is then placed on vertically on three-dimensional vibrating platform, wherein N between N sections of every section of simulative lunar soil test flumes
For positive integer；The simulative lunar soil test flume is the hollow cylinder of outer diameter Φ 520mm, internal diameter Φ 500mm, overall length 2.5m；
B, the simulative lunar soil test flume being placed in three-dimensional vibrating tabletop of platform is fixed, and uses positioning and clamp device
Fastening；The positioning is bandage locking mechanism with clamp device；
C, it chooses particle shape alkaliolivinebasalt as simulative lunar soil raw material and to be mixed, obtains simulative lunar soil；Institute
The particle shape alkaliolivinebasalt stated include angular, subangular alkaliolivinebasalt, grain size group become is less than
0.01mm, which accounts for 13.51%, 0.01-0.025mm and accounts for 11.99%, 0.025-0.05mm and account for 12.83%, 0.05-0.075mm, to be accounted for
8.24%, 0.075-0.1mm, which account for 5.53%, 0.1-0.25mm and account for 14.2%, 0.25-0.5mm and account for 10.2%, 0.5-1mm, to be accounted for
8.5%, account for 15% more than 1mm；
D, quality m is weighedjSimulative lunar soil be filled into simulative lunar soil test flume, then simulative lunar soil surface is smoothed out, makes jth
Section simulative lunar soil test flume fills up, wherein the initial value of j is 1, j=1,2,3 ... N；The mjTo fill up jth section simulative lunar soil
The quality for the simulative lunar soil that test flume needs；
E, counterweight is placed in simulative lunar soil test flume, test flume mouth is covered with dust-proof pocket；
F, open three-dimensional vibrating platform (1), first upper and lower directions vibrate 5 minutes, frequency 30Hz, then left and right, it is front and back, upper and lower three
A direction vibrator is all turned on, and three direction vibration frequencies are adjusted to 30Hz, after vibrating 15min, measures the mould after vibration
Quasi- lunar soil height h '；
G, according to density p after the simulative lunar soil height h' calculating simulation lunar soil vibration after vibrationdFor
Wherein, D is simulative lunar soil test flume internal diameter；
If density p after simulative lunar soil vibrationdReach the maximum dry density of simulative lunar soil, then terminate vibration, otherwise continue X, Y,
Tri- directions Z vibrate simultaneously, until density p after simulative lunar soil vibrationdReach the maximum dry density of simulative lunar soil；
H, j=j+1 repeats step d~g, until j=N；
I, simulative lunar soil relative compaction D is measured using quality volumetric methodrFor
Wherein,hAlwaysFor simulative lunar soil total height in N sections of simulative lunar soil test flumes after the completion of vibration, work as simulative lunar soil
When the size grading ratio of middle 5mm or more is not more than 6%, ρ 'dmax=ρdmax, ρ 'dmin=ρdmin, ρdmaxFor simulative lunar soil maximum dry
Density, ρdminFor simulative lunar soil experimental relationship, when the size grading ratio of 5mm or more in simulative lunar soil is more than 6%,
Wherein, ρ5The grain density for being 5mm or more for grain size in simulative lunar soil, P5For the size grading of 5mm or more in simulative lunar soil
Ratio, if simulative lunar soil relative compaction DrIt more than 100%, then prepares up to standard, otherwise prepares not up to standard；
Then it is utilized respectively triaxial shear test, vibration hammering method, graduated cylinder roll back method, core cutter method carry out angle of friction, cohesive force, most
The detection of big dry density, experimental relationship, dry density in situ, realizes that the quantization of physical and mechanical parameter is controllable.
2. a kind of superelevation compactness simulative lunar soil according to claim 1 prepares and detection method, it is characterised in that：It is described
N be 4.
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| CN201510801310.8A CN105300768B (en) | 2015-11-19 | A kind of superelevation compactness simulative lunar soil prepares and detection method |
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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 |
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