1229 results about "Sample preparation" patented technology

The invention relates to a solidified soil proportion and strength prediction method and system based on SEM image analysis, and belongs to the technical field of solidified soil strength testing. Comprising the following steps: S1, measuring physical indexes of disturbed soil; s2, multi-working-condition sample preparation and maintenance; s3, fractal dimension calculation of the SEM image is carried out; s4, unconfined compressive strength testing; s5, establishing a microstructure inversion model and a macroscopic strength prediction model; and S6, proportion optimization and strength prediction: utilizing the microstructure inversion model and the macroscopic strength prediction model to carry out solidified soil proportion optimization or strength prediction. According to the method, the quantitative relation between the microstructure (fractal dimension) and the macroscopic strength is established through SEM image analysis, the defects in the prior art are overcome, and a brand new technical path is provided for resource utilization of disturbed soil.

The invention provides a rock mineral analysis test management method and system, and the method comprises the steps: collecting rock mineral sample multi-modal data, and constructing a digital twinborn model; constructing a geological knowledge map, and injecting and fusing the two knowledge to generate a virtual test data set; performing self-supervision pre-training by using the data set to obtain a self-adaptive mineral phase recognition model; deploying the model to a block chain-Internet of Things double-chain traceability system to obtain an identification result and an optimization instruction; and executing a sample preparation process and removing unqualified samples. According to the method, diffusion steps are adjusted through adaptive noise scheduling and a space-time alignment algorithm, data are integrated, a high-reality-sense virtual test data set is generated, and a self-supervised pre-training and knowledge distillation technology is combined, so that the model has space-time feature extraction and dynamic optimization capabilities; and finally, full-process closed-loop control is realized through a double-chain traceability system and a modular robot, and the recognition precision of a complex scene is improved.

The invention discloses a molten steel element content on-line detection system based on a laser-induced breakdown spectroscopy technology, and relates to the technical field of molten steel element content on-line detection, the molten steel element content on-line detection system comprises an excitation system, an acquisition system, a data preprocessing module and a component detection module; the excitation system is used for emitting laser to the molten steel surface to generate plasma; the acquisition system is used for collecting signal light radiated by the plasma; the data preprocessing module is used for carrying out baseline correction and noise reduction processing on the collected original spectral signals; and the component detection module comprises an element content prediction model based on a gating specific expert attention network LSEA-Net and is used for carrying out quantitative analysis on the preprocessed spectral data to obtain the element content of the molten steel. The technology has the advantages that sample preparation is not needed, online rapid analysis and multi-element synchronous detection are achieved, and the technology is suitable for the high-temperature environment and the like, and the requirement of a steelmaking site for real-time component detection is met very well.

The invention discloses a coarse and fine particle inclusion photoelastic sample preparation and contact force chain network analysis method, and relates to the field of particle material mechanical tests, and the method comprises the following steps: calculating target void ratios under different coarse particle contents through a discrete element method; generating a corresponding numerical calculation sample according to the target void ratio and the preset coarse grain content, and exporting related parameters to prepare a coarse and fine grain inclusion photoelastic sample with the same initial compactness; in combination with non-polarization and polarized photoelastic images of the photoelastic sample, extracting intergranular contact force and constructing a contact force network; based on the contact force network, a strong contact force network is extracted and microscomic analysis is carried out, and force transmission characteristic comparison results under different coarse grain content conditions are obtained. According to the method, preparation efficiency of samples with different coarse grain contents and controllability of an initial state are realized, an influence rule of the coarse grain contents on a force chain structure and force transmission characteristics thereof is disclosed based on analysis of a contact force chain network, and the method is of great significance in researching a force transmission mechanism of a coarse and fine grain inclusion system and microstructure characteristics thereof.

The invention relates to a sample preparation method for coating thickness detection, which comprises the following steps: circularly heating and cooling a base material to obtain a weakly combined base material with a base material body and a coating locally separated; and forming a cut extending along the thickness direction of the coating in a local separation area of the coating of the weak combination base material to obtain a coating section sample vertical to the surface of the base material. Due to the difference of linear cutting expansion coefficients of a base material body and a coating, alternating thermal stress is initiated at the interface of the base material body and the coating through cyclic heating and cooling processes, so that the base material and the coating are controllably and locally separated, a weakly combined base material is obtained, and a cut extending in the thickness direction is prepared in the surface of the locally separated coating. A coating section sample perpendicular to the surface of the base material can be obtained through simple mechanical separation. The method can be used for efficiently preparing a coating sample with clear section and good integrity at low cost on the premise of not depending on expensive or high-damage equipment.

The invention provides a synchronous electrochemical test and hydrogen evolution test experimental device and method, and belongs to the field of metal corrosion research. The experimental device provided by the invention comprises a hydrogen evolution test module, an electrochemical test module and a control system module, and the control system module controls the hydrogen evolution test module and the electrochemical test module to work through circuit connection. By combining the hydrogen evolution test and the electrochemical test, the automatic accurate measurement of the hydrogen evolution amount in the metal corrosion process can be realized, the measurement of the corrosion rate, the corrosion potential and the charge transfer amount in the oxidation-reduction reaction can also be realized, and the problems of poor sustainability and low precision of the traditional hydrogen evolution test method are avoided; the hydrogen evolution test data and the electrochemical test data are automatically obtained while one-time sample preparation is realized.

The invention discloses a method for testing heat treatment residual stress of a bearing ring based on nanoindentation, and belongs to the technical field of stress testing. The method comprises the following steps: establishing a calibration curve, preparing and testing a sample, and calculating residual stress. According to the method, the indentation work-residual stress quantitative calibration curve for the bearing steel is established through finite element simulation, the specific constitutive relation of materials is fully considered in the model, and system errors caused by mismatching of material parameters of a general model are eliminated. The change trend of the residual stress value calculated by the method is consistent with that of a prediction result of finite element analysis, and it is proved that the method can accurately, reliably and quantitatively characterize the residual stress distributed in the microscale after heat treatment.

The invention discloses an off-line carbonate cluster isotope sample preparation system and preparation method, the system adopts a main controller and a plurality of sub-controllers to work cooperatively, parameters such as temperature, pressure, gas flow direction and the like are accurately controlled, and the stability and repeatability of sample preparation are ensured; an SPR gas sensor and a fluorescent gas sensor are arranged, CO2 concentration and pressure changes are monitored in real time, accurate data support is provided for a main control machine, and dynamic adjustment and optimization are achieved; a multi-stage cold trap design is adopted, and liquid nitrogen and a methanol-liquid nitrogen mixture are combined for cooling, so that impurity gas is effectively separated, and high purity of final CO2 gas is ensured; the system adopts a modular design, is simple and convenient to operate, is easy to maintain and upgrade, and has good expansibility and universality.

The invention discloses a system and a method for rapidly detecting trace active ingredients of a medicine, belongs to the technical field of medicine detection, and relates to cross application of surface enhanced Raman spectroscopy and artificial intelligence. The system comprises a sample preparation module, a micro-fluidic enrichment module, a Raman spectrum acquisition module, a self-adaptive spectrum analysis module, a multi-component identification module and an intelligent report generation module, and efficient enrichment and nanogram-level detection of drug molecules are realized through an enhanced surface Raman scattering micro-fluidic chip. Intelligent identification and accurate quantification of complex spectral characteristics are realized by adopting a deep learning algorithm and a self-adaptive weight calculation method, synchronous detection of 5-10 active pharmaceutical ingredients is supported, the detection sensitivity reaches nanogram / milliliter level, the quantification error is less than 5%, the detection time of the whole process is 5-10 minutes, and the detection accuracy is high. The sensitivity, the accuracy and the efficiency of medicine quality detection are obviously improved.

The invention discloses a method for measuring the oxidation rate of silver ore, and relates to the technical field of mineral processing and process mineralogy analysis. The determination method comprises the following steps: preparing and segmenting a sample; silver grade calibration and reselection enrichment are carried out, and products with different mineralogical characteristics are obtained; carrying out automatic mineralogical analysis to obtain the type, content and dissemination characteristics of silver minerals; chemical leaching correction coefficient determination, wherein phase state distribution of silver is obtained through stepped chemical leaching, and the correction coefficient is calculated; determining a gangue wrapping correction coefficient, analyzing the silver content of the residue and calculating the correction coefficient; and finally, calculating the silver ore oxidation rate based on the automatic mineralogy analysis data and the correction coefficient. According to the method, through multi-technology fusion and data correction, the accuracy and reliability of measurement of the oxidation rate of the silver ore with low silver mineral content and uneven distribution are remarkably improved, and accurate data support is provided for formulation of a mineral separation process.

The invention discloses a method for quantitatively testing the content of organic carbon and disseminated particle size in gold ore, and belongs to the technical field of gold ore detection. The method comprises the steps of sample preparation and quantitative testing, wherein palm wax serves as a cementing agent, barite serves as a standard sample, and a to-be-tested sample is prepared through melting, mixing, consolidation, polishing and carbon spraying; the quantitative test is based on an automatic process mineralogy test system, palm wax backgrounds are removed through backgrounds deduction, an energy spectrum library is established to recognize organic carbon and barite particles, the area ratio of the organic carbon and the barite particles is measured, the mass ratio is converted by combining the density ratio, the organic carbon content of raw ore is inversely calculated, and meanwhile, the particle size distribution of the organic carbon is counted. The method solves the problem that the content and granularity of organic carbon cannot be accurately quantified at the same time in the prior art, has the advantages of high test precision, high efficiency, comprehensive parameters and simplicity and convenience in operation, and can provide key data for optimization of a gold ore cyanidation leaching process.

The invention provides a soil body-structure interaction boundary damage quantitative testing device and method, and relates to the technical field of geotechnical engineering test.The soil body-structure interaction boundary damage quantitative testing device comprises a stress conduction boundary shear strength and rigidity combined testing structure and a testing system integrating a shaft confining pressure-temperature collaborative loading system and a monitoring collection and process control system; through an improved slurry sample preparation method, tight connection and constant contact area between the hollow columnar soil sample and the friction pile body are ensured, and the test sealing performance is enhanced through the elastic sealing design; the real-time measurement of the rigidity of different positions in the whole shearing process is realized by virtue of the excitation damage detection element capable of synchronously moving; according to the method, the constitutive model of the marine rock-soil stress conduction boundary domain is perfected, a reliable experimental basis is provided for foundation design of deep-sea engineering such as submarine pipelines and anchoring structures, and the method has important theoretical value and engineering significance for improving design scientificity and safety of deep-sea infrastructures and preventing and controlling submarine geological disasters.

The utility model discloses sample preparation equipment, and belongs to the field of chemical sample preparation. The sample preparation equipment comprises a batching device, a pressing device, a transferring device, a calcining device, a crushing device and a detecting device. The transferring device is used for pouring the mixed powder into the material pressing mold and transferring the material pressing mold to the material pressing device, and the material pressing device is used for pressurizing the material pressing mold; the transfer device is used for transferring the first intermediate sample into the second accommodating vessel and transferring the second accommodating vessel into the calcining device, and the calcining device is used for calcining the first intermediate sample; the transfer device is used for transferring the second intermediate sample to the crushing device, and the crushing device is used for crushing the second intermediate sample to form a plurality of samples and dropping the samples into the third accommodating vessel; the transfer device is used for transferring the third accommodating vessel to the detection device, and the detection device is used for detecting the microstructure of the sample. The sample preparation equipment provided by the utility model can realize automatic preparation of the sample.

The invention discloses a microorganism solidification inclined deposition surface sandy soil hollow cylinder sample preparation device and a use method. The sample preparation device comprises a hollow cylinder mold and a supporting pedestal for the hollow cylinder mold to rotate. One end of the hollow cylindrical mold can be lifted to a proper angle through a supporting rod with threads and a U-shaped hoop which are arranged on a supporting pedestal, so that a deposition surface inclined at any angle of a sample is vertical to the ground; a peristaltic pump is connected with a grouting channel distributed on the inner cylinder, and grout is input into the hollow cylindrical sample. Slurry can flow along the deposition surface under the action of gravity, the phenomenon that microorganisms are preferentially attached to the area close to the grouting hole is weakened while the grouting efficiency is improved, disturbance of slurry flowing to the inclined deposition surface of the sample is reduced, and the problems that a traditional grouting method is low in efficiency and large in disturbance to the sandy soil sample on the inclined deposition surface are solved. Therefore, the stability of the inclined deposition surface of the sample is ensured, and the preparation quality and test result reliability of the microorganism solidification inclined deposition surface sample are improved.

The invention relates to the technical field of adulteration detection methods, in particular to a fritillaria powder layered adulteration detection method based on hyperspectral imaging, which specifically comprises the following steps: step 1, sample preparation and hyperspectral data acquisition, specifically comprising sample preparation, hyperspectral image acquisition, black and white plate correction and spectrum extraction; step 2, spectral data preprocessing, specifically including noise suppression processing and baseline correction and feature enhancement; according to the method, sample preparation fits a real market adulterated scene, hyperspectral acquisition is combined with black and white plate correction and spectrum extraction, high-quality and interference-free original data is obtained, and pretreatment steps of noise suppression, baseline correction and feature enhancement are matched, so that interference such as equipment noise and light scattering is eliminated, and the sample essential spectrum difference is highlighted; and the problem of identification difficulty caused by poor data quality in traditional detection is solved.

The invention relates to physical sample preparation equipment and method for an inner wall eccentric wear sleeve, and the physical sample preparation equipment for the inner wall eccentric wear sleeve comprises a rotatable main shaft, and the outer side wall of the main shaft is sleeved with a grinding wheel structure; the sleeve is arranged on the outer side of the main shaft in a sleeving mode, and the axial direction of the sleeve is parallel to the axial direction of the main shaft; the first driving device is connected with the main shaft and can drive the main shaft to rotate; the second driving device is connected with the sleeve, can drive the sleeve to move in the radial direction so as to make contact with the grinding wheel structure, can apply a preset constant load to the sleeve, and can further drive the sleeve to continue to move in the radial direction in the process that the sleeve makes contact with the grinding wheel structure to generate frictional wear; and the sleeve and the grinding wheel structure are kept in a contact state under the action of the preset constant load, so that an eccentric wear groove is formed in the inner wall of the sleeve. According to the invention, the problem of lack of preparation of an eccentric wear sleeve material sample with a crescent-shaped inner wall in the prior art can be solved.

A sample is milled to expose a region of interest (ROI) within the sample while being held by a sample stage in a microscope system. The sample is milled based on an ROI location determined with a sample image acquired with light beams irradiated from different axes. A sample image is acquired while holding the sample for milling using the same sample stage.

The utility model discloses a pressing device for a powder sample and a high-purity indium sheet of a glow discharge mass spectrometer, and belongs to the field of glow discharge mass spectrometry in chemical component analysis. The device comprises an external supporting and protecting system, an internal tabletting system and upper and lower pressing dies. The external supporting and protecting system comprises a touch screen, a protective cover, a safety grating, a control box and the like. The internal tabletting system is composed of an equipment base, a fixed stand column, a movable table, an electric push cylinder, a pressure sensor and the like, and the movable table is driven by the electric push cylinder to drive a lower pressing die to move upwards to be matched with a fixed upper pressing die to complete pressing. The device adopts replaceable upper and lower pressing dies and a sample pressing ring, and meets the preparation requirements of samples with different sizes. The device solves the problems that a powder sample is difficult to compact and the thickness of the prepared indium sheet is not uniform, the pressing parameters are controlled in a programmed manner, the prepared sample can be directly tested without demolding, the integrity of the sample and the test accuracy are effectively ensured, the operation is safe, the efficiency is high, and the economical efficiency is good.

The invention discloses a method for analyzing the gold occurrence state of a dump leaching sample, and relates to the technical field of mineral processing and process mineralogy analysis. According to the analysis method, through the steps of sample preparation, gold grade calculation and representativeness verification, size grading and enrichment, stepped chemical leaching diagnosis, roasting dissociation and secondary leaching diagnosis, reselection enrichment and precise analysis, occurrence state calculation and the like, the means of reselection, leaching, roasting and the like are systematically combined with a mass balance mathematical model; accurate quantitative analysis of four critical occurrence states of coarse grain gold, leachable gold, wrapped gold and adsorbed gold in the heap leaching process is realized initiatively. The industrial problem that different occurrence states cannot be accurately quantified through a traditional method is solved, and direct and reliable data support is provided for accurate optimization and recovery rate improvement of the dump leaching process.

This product is a sample preparation tube strip used to extract or purify target substances from samples, such as in nucleic acid isolation. It is used in combination with other sample preparation devices, as shown in the "Reference Diagram Showing the Usage State." The numbers 1 through 6 in the "Front View" of this product correspond to the six holes 1 through 6 in the "Top View" of this product. In the nucleic acid isolation process, first, a magnetic stirring ball and magnetic stirring ball diluent are placed in hole 1, a dissolving solution in hole 2, different types of cleaning solutions in holes 3, 4, and 6, and an eluent in hole 5. The following steps are then performed: (1) One or more of this product are placed in a sample preparation tube strip rack, a magnetic stirring bar cover is inserted into hole 1, and the sample to be processed or purified is placed in hole 2. (2) The magnetic stirring bar cover is driven by a drive mechanism and rotates within hole 1, adsorbing the magnetic stirring ball to its outer surface. (3) The magnetic stirring bar cover with the magnetic stirring ball adsorbed to its outer surface is moved into hole 2, where the magnetic stirring ball adsorbs the nucleic acid in the sample. (4) The magnetic stir bar cover that has undergone the process (3) is moved in the order of hole 3, hole 4, and hole 6, and impurities in the sample are washed away. (5) The magnetic stir bar cover that has undergone the process (4) is moved into hole 5, and the nucleic acid is released from the magnetic stir ball under heating conditions. (6) The magnetic stir bar cover that has undergone the process (5) is returned to hole 1, and the nucleic acid remains in hole 5.

The invention relates to the technical field of analytical chemistry, in particular to a high performance liquid chromatography detection method of a ridecevir intermediate GS-441524, which comprises the following steps: preparing a sample: taking a GS-441524 test sample, dissolving and diluting with a mixed solution composed of dimethyl sulfoxide and a phosphoric acid solution to prepare a test sample solution; the volume fraction of phosphoric acid in the phosphoric acid solution is 0.05-0.1%, and the volume ratio of dimethyl sulfoxide to the phosphoric acid solution is (30: 70)-(60: 40). According to the application, the ridecevir intermediate GS-441524 is dissolved and diluted through the mixed solution composed of the dimethyl sulfoxide and the phosphoric acid solution, and due to the high solubility of the dimethyl sulfoxide to the ridecevir intermediate GS-441524 and the high boiling point of the dimethyl sulfoxide, the ridecevir intermediate GS-441524 with relatively high concentration can also be subjected to high performance liquid chromatography.

The application discloses an inlaying method in a metallographic sample preparation process, which comprises the following steps: step one, sample cutting; step two, sample cleaning; step three, sample winding; step four, sample inlaying; and step five, sample grinding; in the step one, burrs on the cutting surface of the cut sample need to be removed; in the step three, the winding method is specifically as follows: medical non-woven fabric adhesive tape is wound around the middle part or two ends of a relatively thin sample, so that the sample can be stably placed while part of the sample is still exposed; and in the step four, the inlaying material is transparent phenolic resin material; the diameter of the thickest sample is taken as a standard, the relatively thin sample is wound with the medical non-woven fabric adhesive tape, so that the diameter of the relatively thin sample is increased, the longitudinal surfaces of the samples with different diameters can finally be on the same horizontal plane, and thus the unified grinding of the samples with different diameters is realized, and the sample preparation efficiency can be greatly improved.

The utility model discloses a cutting sample preparation device for cable detection, including work bench, the work bench upper end surface is equipped with the support, the support inside top is equipped with the hydraulic cylinder, the hydraulic cylinder bottom is connected and is equipped with the cutting knife, the work bench upper end surface corresponds the cutting seat that is equipped with the cutting knife, the cutting seat upper end surface corresponds the cutting groove that is seted up to the cutting knife, the work bench upper end surface both sides all can detachable and be equipped with the limit seat, the limit seat is provided with multiple groups, and the limit seat in multiple groups is different and is seted up to the groove type number, and the limit seat in multiple groups is different and is seted up to the groove bottom end relative the work bench upper end surface horizontal arrangement, the support inside top is equipped with the electric push rod symmetrically, two electric push rods bottom all are equipped with the compression rod, two compression rods bottom all are equipped with the compression seat, through the design of limit seat, the convenience different model cable preliminary installation limit adjustment is improved practicality.

The utility model discloses a sample preparation tool for a lead alloy direct-reading spectrometer sample. The sample preparation tool comprises a to-be-prepared sample, a high-density alloy steel plate and an extrusion device, the high-density alloy steel plate is horizontally fixed below the working platform; a sample to be prepared is positioned under the high-density alloy steel plate; the extrusion device is used for driving the to-be-prepared sample to continuously rise until the to-be-prepared sample is extruded to the high-density alloy steel plate, so that the preparation of the sample is completed; the extrusion device comprises a large piston cylinder, a small piston cylinder and a hydraulic oil tank; the large piston cylinder and the small piston cylinder are vertically placed side by side, and a sample to be prepared is placed at the top end of a large piston of the large piston cylinder; a rodless cavity of the small piston cylinder is connected with a rodless cavity of the large piston cylinder through an oil conveying pipeline, and a second one-way valve is installed on the oil conveying pipeline. An oil outlet pipe of the hydraulic oil tank is communicated with a rodless cavity of the small piston cylinder through a first one-way valve, and an oil return pipe of the hydraulic oil tank is connected with a rodless cavity of the large piston cylinder through an oil drain valve. Small and irregular lead alloy direct-reading spectrometer samples can be conveniently prepared, and the production and research and development efficiency is improved.

The present disclosure provides a system and method for the detection of rare mutations and copy number variations in cell free polynucleotides. Generally, the systems and methods comprise sample preparation, or the extraction and isolation of cell free polynucleotide sequences from a bodily fluid; subsequent sequencing of cell free polynucleotides by techniques known in the art; and application of bioinformatics tools to detect rare mutations and copy number variations as compared to a reference. The systems and methods also may contain a database or collection of different rare mutations or copy number variation profiles of different diseases, to be used as additional references in aiding detection of rare mutations, copy number variation profiling or general genetic profiling of a disease.

This invention discloses an image recognition-based method for assessing grape powdery mildew. By introducing standardized sample preparation and uniform inoculation methods, this invention reduces the interference of randomness and spatial heterogeneity of natural field infection on the assessment results, making the disease occurrence process more controllable among different materials, thereby improving the stability and comparability of phenotypic data. Simultaneously, image recognition and machine learning technologies are used to automatically identify and calculate the area of ​​powdery mildew-infected regions, avoiding the reliance on the experience of assessors in traditional manual visual grading. This enables a continuous quantitative description of the degree of powdery mildew infection, improving the consistency and accuracy of the assessment results. This invention constructs a large-scale image analysis workflow that can be used for batch processing, significantly improving the efficiency of disease assessment, reducing the workload of manual investigation, and making this method applicable to applications requiring the processing of large numbers of samples, such as germplasm resource evaluation and breeding material screening.

The invention belongs to the technical field of compound analysis and identification, and discloses application of a metabonomics analysis technology to identification of lycium seed oil. According to the metabonomics analysis technology, the characteristic components of the lycium seed oil are identified through Log2 Fold Channel and VIP values, and the screening conditions for identifying the characteristic components of the lycium seed oil are | Log2 Fold Channel | > 1.5, and VIP < gt >; the method specifically comprises the steps of sample preparation, non-targeted metabonomics analysis, extraction and identification of characteristic peaks, similarity analysis, difference analysis and screening of differential markers. According to the method, a non-targeted metabonomics analysis method is adopted, various metabolic components in the lycium barbarum seed oil can be undiscriminately covered, the limitation that a traditional identification technology only aims at a few indexes is broken through, the unique characteristic components of the lycium barbarum seed oil can be accurately screened out, and the accuracy and specificity of an identification result are greatly improved.

The application relates to a sample preparation device, a sample preparation system and a sample preparation method. The sample preparation device comprises a cooling mechanism, a low-temperature heat sink and a heat conduction mechanism. The low-temperature heat sink is used for carrying a sample carrying unit. The heat conduction mechanism is connected between the cooling mechanism and the low-temperature heat sink. The cooling mechanism cools the sample carrying unit carried on the low-temperature heat sink through the heat conduction mechanism and the low-temperature heat sink. The heat conduction mechanism has a good heat conduction effect. The cold energy of the cooling mechanism is quickly conducted to the low-temperature heat sink through the heat conduction mechanism. The temperature of the low-temperature heat sink can be accurately controlled. The temperature of the sample carrying unit can be accurately controlled. The sample preparation efficiency is high. The arrangement of the cooling mechanism and the low-temperature heat sink is flexible. The reliability of the device is increased.

The invention relates to the technical field of geotechnical engineering testing, and discloses a macroscopic-interface-containing soil sample preparation device and method.The macroscopic-interface-containing soil sample preparation device comprises a fixed base, the upper surface of the fixed base is fixedly connected with a mounting support, a fixed top plate and a sample pressing baffle, and the rear surface of the fixed base is fixedly connected with a back plate; a sample pressing baffle is arranged on the fixed base, a second groove is formed in the sample pressing baffle, a movable baffle is slidably connected to the inner surface of the second groove, a bulldozing plate is arranged on the fixed base, and a sample preparation space is defined by the sample pressing baffle, the movable baffle and the bulldozing plate. Interface cutting can be conveniently completed, manual sample cutting operation is not needed, meanwhile, the soil cutting angle can be accurately adjusted, a sample containing a multi-angle macroscopic interface can be flexibly manufactured, multi-angle comparison observation can be conveniently carried out in an experiment, manual sample taking-out and sample preparation are not needed, the risk of sample preparation failure is reduced, and the sample preparation success rate is increased.