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Preparation method of mine bulk solid sample for laboratory

A sample preparation and laboratory technology, which is applied in the field of mine bulk sample preparation in the laboratory, can solve the problems of difficulty in the preparation of large-scale slope samples, and the research is limited to a macro perspective, and achieves wide practicability and reasonable method. , the effect of easy operation

Active Publication Date: 2021-10-15
CHINA UNIV OF MINING & TECH
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not only difficult to make large-scale slope samples, but also the research is mostly limited to the macroscopic perspective. How to design and prepare reasonable and suitable small-scale bulk samples in the laboratory and simulate the gradation relationship between actual mine materials is a problem that needs to be solved. The problem

Method used

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  • Preparation method of mine bulk solid sample for laboratory
  • Preparation method of mine bulk solid sample for laboratory
  • Preparation method of mine bulk solid sample for laboratory

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preparation example Construction

[0049] likefigure 1 figure 2 As shown, the present invention is made of a mine dispersion sample for a laboratory, comprising using a dispersion sample preparation device, a dispersion sample preparation device including a screening machine 1, a screening holder 2, an electronic balance scale 3, a mixture of materials. Box 4, high speed homogenizer 5, mold 6, and maintenance case 7, the screening space 1 is matched with a plurality of screens 2 having different destination, and is used to screen out of the desired particle diameter range material, electronics The balance scales 3 are used to weigh the quality of the materials at all levels under the designated stage, and the material mixing box 10 is used to mix the material of the weighing level of material; first, the determination of the material level relationship between the dispersion sample, with different Nuclear sieve 2 screens all levels of materials within the range of the desired particle size, and use the electronic ...

specific Embodiment

[0081] S1: Determine material particle components

[0082] Sample preparation of common mining dispersion materials in stone, soil, sand, and plastic sand, the same is used for samples;

[0083] S2: Determine "earth stone" particle size boundary value

[0084] The cylindrical dispersion sample size can be determined according to the experiment, for example: setting the size of the cylindrical dispersion sample "Earth" particle size boundary value is D S / R = 0.05 × L c = 0.05 × 50 = 2.5mm, for convenient screening, the selected dispersion material "earth" is 2mm; the particle size of the "soil" component is within 2 mm, and the particle diameter of the "stone" component is 2mm or more;

[0085] S3: Determine the maximum particle size of the dispersion sample material particles

[0086] The maximum particle size, that is, the particle size of the rock block should not be greater than

[0087] S4: Determine the particle level relationship

[0088] Take 30%, 40%, 50%, 60%, and 70% o...

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Abstract

The invention discloses a preparation method of a mine bulk solid sample for a laboratory, which comprises the following steps: firstly, determining the grading relationship of each material of a bulk solid sample, screening out each level of material in the required particle size range, weighing the mass of each level of material under the specified grading relationship, pouring each level of the weighed material into a mixing box, adding water, conducting stirring by using a high-speed homogenizer to obtain slurry, and finally loading the slurry into a mold to prepare a sample. The preparation method specifically comprises the following steps: S1, determining material particle components; S2, determining a particle size boundary value of soil and stone; S3, determining the maximum particle size of component particles of the discrete sample; S4, determining a grain composition relationship; S5, calculating the fractal dimension of the bulk solid; S6, judging the rationality of the grading relationship; S7, screening and weighing stone, sand and soil particles; S8, mixing the materials, and preparing a sample; and S9, detecting the mass of the discrete sample. A complete and reasonable discrete sample preparation scheme is provided, and sample guidance support is provided for development of related laboratory research.

Description

Technical field [0001] The present invention relates to a method for preparing a mine dispersion sample, in particular a method for preparing a mine dispersion sample for laboratory in geotechnical technology. Background technique [0002] The mine dispersion is a collector consisting of solid particles associated with each other, and the main features are dispersibility, complexity, and variability. Its complexity and variability are mainly referred to by the dispersion, composed of particles and pores, the mechanical properties of the mine dispersion and the particle size, shape and distribution characteristics are closely related. When the medium contains moisture and the adhesive substance, the particles have a certain adhesion, which is called a non-ideal dispersion. [0003] When the mine tail mine, the drain and other materials are accumulated, the bulk material hinge forms a complex slit mesh, and the granular material and moisture are constantly filled in the slit mesh. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/36
CPCG01N1/286G01N1/36G01N2001/366
Inventor 翟成魏则宁唐伟徐吉钊余旭丛钰洲朱薪宇
Owner CHINA UNIV OF MINING & TECH
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