54 results about "Stone sample" patented technology

Provided is a method and apparatus for classifying geological materials using image processing techniques. The method and apparatus classify geological materials including stones, rock samples, and rock surfaces according to type and state by sequentially applying image processing techniques, such as a color space analysis, a granulometry analysis, texture parameter extraction and texture statistics extraction, to digital images of the geological materials. Since the method and apparatus extract quantitative figures that represent an entire image region by applying various image processing techniques, such as the color space analysis, the granulometry, the texture parameter extraction and the texture statistics extraction, to the digital images of the geological materials, the geological materials can be classified, which is not possible using a conventional image processing technique.

The invention provides a well logging prediction method of shale gas horizontal well single well production capacity. The method comprises the steps of firstly conducting well logging of interval transit time, density and neutron porosity in a drilled horizontal well, and recording the penetrating depth of a horizontal well section and the corresponding vertical depth; then using formation density well logging and compensated neutron well logging information to calculate formation brittle mineral content; utilizing the three well logging curves of the interval transit time, the density and the neutron porosity which reflect formation porosity in the well to calculate the formation porosity; utilizing a method of inverting reservoir permeability through stoneley wave attenuation to solve formation permeability; utilizing an organic carbon content experiment measurement value a stone sample taken in a formation and density well logging to establish a relation to obtain a calculation formula of organic carbon content; utilizing the formation organic carbon content to calculate to obtain formation gas saturation; finally according to the formation brittle mineral content, the formation porosity, the formation permeability and the formation gas saturation to calculate to obtain the daily production capacity of single well shale gas.

The invention provides an evaluating method for corrosion of well-reinforcing cement stone, which comprises the following steps: firstly, preparing cement paste for reinforcing a well; filling the prepared cement paste into a mould; sealing the mould, placing into a high-temperature high-pressure curing kettle and curing for a period of time, thereby solidifying the cement paste and forming the cement stone; placing a cement stone sample with the mould into a corrosion reaction kettle, pouring into a corrosive medium, and controlling the conditions of temperature, pressure and corrosion time, thereby carrying out a corrosion test; and finally, taking the cement stone sample out of the corrosion reaction kettle, removing the mould, performing electron microscope scanning on the cement stone, measuring the performance parameters, such as compression strength and permeability, of the cement stone, and analyzing and evaluating a corroded cement stone structure. According to the evaluating method provided by the invention, the dynamic corrosion condition of the well-reinforcing cement stone being in one-way contact with the corrosive medium in the well is truly simulated, and a measured result is true and reliable.

The invention belongs to the field of sandstone-type uranium ore exploration, and specifically discloses an outlining method for an in-situ leaching sandstone-type uranium-bearing basin favorable mineralization section. The method comprises the steps: determining a research area, and selecting a target layer; collecting a land surface sample of a bottom plate of a basin edge target layer, a drilled coal stone sample or a carbon mudstone sample; collecting sandstone samples of the above samples at the same layer; carrying out the vitrinite reflectance measurement of the collected coal stone sample or the collected carbon mudstone sample, and calculating the maximum burial depth of an ore-containing target layer; selecting apatite minerals from the collected mudstone sample, carrying out the fission-track dating of apatite, and carrying out the inversion of the relation between temperature and time in construction evolution; verifying whether the above inversion result is matched with the actual condition or not: extracting the measurement result if the above inversion result is matched with the actual condition, or else checking whether the sampling is standard or not; drawing an erosion thickness contour map in the research area according to an erosion thickness calculation result, carrying out the research of restriction of construction uplift erosion on uranium mineralization, and outlining a favorable mineralization section. The method is clear in sampling object, is clear in analysis flow, and is simple in operation.

The invention discloses a multimedium permeability experimental device, which comprises a specimen tube, a gravel sample layer, a concrete sample layer with fractures, and a broken stone sample layer, wherein the gravel sample layer, the concrete sample layer and the broken stone sample layer are arranged in the specimen tube from top to bottom in sequence; the bottom of the broken stone sample layer is provided with a filter plate; a sand water containing plastic bucket is arranged below the filter plate; the top of the gravel sample layer is provided with a sealing element; the bottom, the middle part and the top of the gravel sample layer are respectively connected with a N0.1 piezometer tube, a No.2 piezometer tube and a No.3 piezometer tube; the other ends of the N0.1 piezometer tube, the No.2 piezometer tube and the No.3 piezometer tube are all clung and connected with coordinate paper; the top of the gravel sample layer is connected with a water tank through a conduit; a thin iron wire penetrates through the fracture area of the concreate sample layer with the fractures; the bottom end surface and the top end surface of the fracture area are provided with thin plastic skins; the top end of the thin iron wire is connected with the bottom end of the thin plastic skin to penetrate through the center of the filter plate to be twisted into one strand of iron wire.

The invention discloses a stone filtering collector. The stone filtering collector comprises a cover and a main body, wherein the main body is provided with a cavity; the cover is provided with a connecting tube and communicates with an endoscopic sheath water outlet channel; a filtering device with a filter screen is arranged in the main body; the filtering device divides the cavity in the main body into a collecting cavity and a liquid draining cavity; the connecting tube communicates with the collecting cavity; and the liquid draining cavity is provided with a water draining tube. By the filtering collector which is connected with the endoscopic sheath water outlet channel, the purpose of filtering and separating mixed liquid is achieved while surgery is implemented, stone samples and soft tissue samples are directly extracted from the inside of the filtering device, work efficiency of medical workers is greatly improved, workload is reduced, the soft tissue samples can be effectively prevented from being lost, stone ingredient detection or soft tissue pathological examination can be finished effectively in time, and services can be provided for patients well subsequently.

The present invention relates to the field of origin identification of Chinese herbal medicines, and in particular relates to a method for identifying an origin of radix tetrastigme. The method for identifying the origin of the radix tetrastigme comprises the following steps: obtaining near-infrared spectroscopy data and high-performance liquid chromatographic data of radix tetrastigme samples from different origins; obtaining a preset number of samples, and dividing the samples by Kennard-Stone sample dividing method into a training set and a forecasting set; using the training set to establish a least squares support vector machine model; obtaining near-infrared spectroscopy data and high-performance liquid chromatographic data of a sample to be tested, and using the near-infrared spectroscopy data and the high-performance liquid chromatographic data as input of the least squares support vector machine model to obtain the origin of the sample to be tested. The method has high accuracy, high reliability and low cost, can overcome the difficulty of atlas resolving, and is simple in operation.

The invention relates to the technical field of concrete, rock or stone testing, in particular to a method for testing an adhesive property of a coating material under a pressure water-seepage condition. The method aims to solve the technical problem that an existing testing method cannot accurately reflect the adhesive property of the coating material under a practical engineering environment, and comprises the steps of installing a concrete, rock or stone sample on a test stand; installing a pressure tank and injecting water for pressurizing; coating the coating material on an upper surfaceof the concrete, rock or stone sample; applying an adhesion agent on a surface of the coating material; starting a tension testing device for carrying out an adhesive property test under the water-seepage pressure condition. The method provided by the invention can represent the strength of the adhesive property under the water-seepage condition.

The invention discloses a method for sampling detection of the bonding strength of an exterior facing pre-buried stone. The method comprises the following steps: superposing the center of a sample region, the center of an anchoring part and the center of a drawing tester, removing adverse factors for eccentric loading, pulling a facing stone sample from a concrete wall body through the drawing tester, and calculating the bonding strength of the exterior facing pre-buried stone according to a maximum drawing force value and a sectional area. The method is easy and convenient to operate and lowin cost and can directly and accurately reflect the bonding strength of the exterior facing pre-buried stone and provide a basis for quality detection and authentication; meanwhile, the adverse factors for eccentric loading are eliminated, and a detection result is reasonable and reliable; furthermore, the method can be applicable to four conventional anchoring part forms, and fills the blank in the aspect of sampling detection of the bonding strength test of the exterior facing pre-buried stone; a practical and quantifiable method is provided for guaranteeing the bonding quality of the exterior facing pre-buried stone; and the used drawing tester is simple in structure, low in cost, accurate in detection result and favorable for being popularized and applied.

The invention discloses a rock sample grinding and separating device and a method. The device comprises a shell, a gas device, a cleaning device and a rock separating system, wherein a grinding machine is arranged in the shell, the grinding machine comprises a body, abrasive particles are movably arranged in the body, a rotating shaft is arranged with the body, the body can rotate around a rotating shaft to drive the abrasive particles to grind a rock sample, a feeding port and a discharging port are arranged with the body, a feeding channel which can be opened and closed is formed between theshell and the feeding port, the gas device communicates with the body through a pipeline and is used for blowing gas to the rock sample of the body, the cleaning device communicates with the body through a pipeline and is used for supplying cleaning liquid to the body, and the rock separating system communicates with the discharging port, and the rock separating system comprises screens with different mesh numbers. According to the rock sample grinding and separating device and the method, the target rock sample can be efficiently, safely and controllably ground.

The invention relates to the technical field of quartz stone sample polishing and grinding equipment, in particular to quartz stone sample polishing and coating equipment. The quartz stone sample polishing and coating equipment comprises a machine frame, a plurality of groups ofabrasive discs and a conveyor belt, wherein the abrasive discs are arranged below the machine frame, and the conveyor belt is arranged blow the abrasive discs. The quartz stone sample polishing and coating equipment is characterized by further comprising fixing edge strips and a plurality of separating edge strips, wherein the fixing edge strips and the separating edge strips are arranged below the machine frame, the fixing edge strips are connected with the machine frame through connecting columns, and are hung above two side edges of the conveyor belt, and the separating edge strips are connected with the machine frame through connecting columns, and are hung between the fixing edge strips and above the middle position of the conveyor belt. By means of the cooperation between the abrasive discs and a crystal plane agent and the control on motor rotation speed, a quick coating effect and a compact film layer can be realized, the luster of a processed sample reach 80 degrees or more, and the surface is translucent and bright, so that stains difficultly penetrate into the sample.

The invention provides a method for isolating and culturing endothelium from human adipose tissue for clone formation of cells. The method comprises the steps of a, taking adipose tissue and performing washing, digestion and centrifuging to obtain cell sedimentation; b, cleaning the cell sedimentation in the step a, placing the cell sedimentation in a cell culture medium containing 10% FBS, and culturing the cell sedimentation for 48 h; c, replacing the cell culture medium containing 10% FBS in the step b with an EGM2 culture medium, performing culture till paving stone sample cell clone groups appear, and replacing the solution every 2-3 days in the culture period; d, replacing the EGM2 culture medium with a mixed culture medium every 2 days till the cell merging degree reaches 80-90%, and the cells are obtained. The invention further provides the prepared cells formed by clone formation. The isolation method is applied, endothelium can be efficiently obtained from the adipose tissue for clone formation to obtain the cells, and the method is easy to implement and short in isolation and culture time and has the good application prospect.

The invention discloses a cement-doped graded broken stone drying shrinkage detector. The detector comprises a base, wherein a support and a weighing sensor are arranged on the base, a cement graded broken stone sample is placed on the weighing sensor, a dial gauge or a displacement sensor is arranged on the support, a detection end of the dial gauge or the displacement sensor points to the cement graded broken stone sample, and the weighing sensor and the dial gauge or the displacement sensor are connected with a data processing device through signal lines. The data processing device is arranged in the base and a displayer is arranged on one side surface of the base. The detector is light, convenient to use and simple to operate, data are accurate and objective, the labor intensity of testers is reduced, the test precision is improved, and the drying shrinkage crack degree of cement-doped graded broken stone packing layers can be predicted through test results.

The invention discloses a rock size defect repair method and a standard test piece preparation method for solving the technical problems that a rock test piece is difficult to manufacture, and that the test result is not intuitive and reliable enough in the prior art. The rock size defect repair method mainly comprises: taking CY-39 type epoxy resin and a YS-T31 type resin curing agent, uniformlymixing the components, and performing bubble removal treatment; taking a defective rock sample or a rock-forming mineral raw gemstone, thoroughly cleaning the surface thereof, and then placing the defective rock sample or the rock-forming mineral raw gemstone in a test piece mold with a smooth bottom surface; pouring the obtained castable into the test piece mold, and then performing the bubble removal treatment; and drying and curing under the condition 5-25 DEG C, and dismounting the mold. By adopting the rock size defect repair method disclosed by the invention, the problem that the test piece is difficult to be manufactured in various rock mechanical tests or innovative tests is solved; the prepared test piece can be used for visually observing the repair quality and monitoring the whole process of the test; and the utilization rate of rock samples with irregular shapes can be improved.

The invention discloses a detection method for stabilizing broken stone gradation by cement. According to the invention, a mass m0 of a broken stone sample stabilized by cement is measured in the step1-step 7, the mass m1 and the mass m2 of the broken stone sample stabilized by cement after drying are respectively measured, the mass m3 of the dried particles having a particle size being greater than or equal to 0.075 mm in an aggregate can be measured, and the grader retained mass mi of the aggregate at a filter sieve with a diameter of the sieve aperture being I is measured; according to theabove m0, m1, m2, m3 and the cement dosage omega, the water content Rho of the broken stone stabilized by cement, the mass of the cement and aggregate and ma, the aggregate mass mb and the aggregategradation parameter can be calculated, the gradation detection of the broken stone stabilized by cement is realized, full dissolving of the cement in the broken stone stabilized by cement can be guaranteed through the step 5), a mixture m3 the sieve does not contain the cement, the gradation detection accuracy is increased, and gradation parameter of the broken stone stabilized by cement on on-site construction can be accurately reflected, so that the broken stone stabilized by cement is subjected to mass monitoring from the construction process and result.

The invention discloses a vertical pre-perforation device in a cubic original rock sample borehole and a pre-perforation processing method. The pre-perforation device comprises a base platform, a gasdrill, a sample holder, an air pressure control device and position adjustment devices. The gas drill and the sample holder are connected to the base platform through three axially adjustable positionadjustment devices. The gas drill is connected to a pressure gas source through the air pressure control device. The gas drill comprises a rod-shaped miniature pneumatic machine whose cross section is smaller than a middle through hole section of a sample and a right angle turning transmission device. The gas drill outputs rotational power through an output end of the right angle turning transmission device and has a diamond tool mounting structure for drilling and shaping. The processing method is implemented based on the pre-perforation device. The device and the method have advantages thatthe device has a simple structure and compact layout, perforation operation becomes convenient, and an original stone sample perforation requirement can be fully satisfied; and a technology process of the processing method is reasonable, operation is convenient and efficiency is high.

The application discloses a rock sample polishing method and device. The rock sample polishing device includes a housing; a placement table, the placement table is arranged in the housing, the placement table can move relative to the housing, and the rock sample can be placed on the placement table; a laser assembly, the laser assembly is arranged in the housing, and the laser assembly The laser can be emitted to the surface of the rock sample; the gas device is arranged in the casing for blowing gas to the rock sample; the roughness detection device is arranged in the casing and adapted to the sample stage, and is used for detecting the roughness of the rock sample surface Spend. The polishing device of the rock sample is polished by laser heating, which is different from the contact grinding and polishing method in which water and polishing agent are used as the medium in the polishing process of the current technology. The integrity of the rock sample is guaranteed.

The invention discloses a rock sampling device capable of being matched with an unmanned vehicle in geological exploration, which comprises a vehicle bottom. A box body is fixedly arranged on the upper end surface of the vehicle bottom, a transmission cavity is arranged in the box body, a motor is fixedly arranged on the inner wall of the upper side of the transmission cavity, and the lower end ofthe motor is in power connection with a power shaft. By using the unmanned vehicle as a carrier, the device realizes automatic rock sample collection in geological prospecting operation, especially can act on radioactive exposed ore sample collection and other sample collection operations having negative effects on human bodies, is provided with the stabilizing device capable of automatically stretching and retracting, and utilizes wind power to generate reverse thrust, so that the device is stronger in road holding force and higher in reliability in the rock sampling process. In addition, the device can realize gravel sampling integration, is relatively high in automation degree, and greatly reduces the labor amount of geological prospecting workers.

The invention relates to the field of reservoir rock pore structure classification in the oil and gas field development process, in particular to a carbonate rock pore structure classification methodbased on an overburden pressure seepage experiment, which comprises the following steps: preparing a rock sample, and measuring the gas permeability of the rock sample; after the rock sample is saturated with simulated oil, performing a permeability-confining pressure relation determination experiment, and obtaining a permeability-confining pressure curve; carrying out piecewise fitting on the permeability-confining pressure curve to obtain a permeability-confining pressure fitting curve, and analyzing a parameter change rate of piecewise fitting; observing the rock core, and preliminarily judging the pore structure type according to the rock core observation result; according to the difference of the change rates of the fitting parameters of different segments, classifying the pore structure type of the rock core by combining the rock core observation result and the theoretical analysis of the permeability-confining pressure fitting curve characteristics, and the pore structure classification result of the classification method is closer to the real situation of the carbonate reservoir.

A device and method of handling stone samples. The device (10) comprises a handling unit (13) rotatable relative to a frame (11) of the device. Inside the handling unit may be arranged a stone sample storage box (18) comprising several parallel stone samples (S). On the storage box may be arranged several intermediate cassettes (24) in an upside down position. The handling unit is turned (T) upside down in order to tip the stone samples from the storage box to the several intermediate cassettes. The intermediate cassettes are removed from the handling unit and the stone samples are tipped to individual sawing cassettes (9).

The invention relates to an intelligent qualitative and quantitative detection method for human body stones. According to the intelligent qualitative and quantitative detection method for the human body stones, a light source emits infrared light; the infrared light irradiates to a sample in a sample room through an interferometer; a stone infrared spectrum of the sample is obtained and is stored to a computer; the stone infrared spectrum is subjected to data decryption, data verification, and stone component and content analysis; an analysis result is stored in a memory; a report is generated according to the analysis result. According to the method, the defects that a spectrum analysis technology is complex and cumbersome, a scheme for treating or preventing stones cannot be generated, the spectrum analysis technology is difficultly grasped by non-physical professional doctors and nurses and the like are overcome. The method has high stone sample analysis accuracy, and has efficiency and high accuracy on a single-component or mixed-component stone sample; a stone infrared spectrum can be analyzed automatically; the obstacle that a user cannot analyze the spectrum is overcome; stone prevention measurement and medicament treatment schemes can be automatically provided according to the reported stone components, which contribute to clinical popularization and application.

The invention discloses rock sample high-precision cutting equipment and method, and belongs to the technical field of rock cutting equipment. The problems that existing rock cutting equipment is poor in cutting precision and low in cutting efficiency, and the cutting thickness cannot be adjusted are solved. The rock sample high-precision cutting equipment comprises a machine base, a cutting mechanism and a clamping mechanism, the cutting mechanism and the clamping mechanism are fixed to the machine base, and the cutting mechanism comprises a cutterhead and a first driving motor used for driving the cutterhead to rotate. The clamping mechanism comprises a sample loading disc and a driving mechanism, a plurality of sample mounting parts are uniformly distributed on the sample loading disc, to-be-cut samples are fixed on the sample mounting parts, and the driving mechanism is used for driving the sample loading disc to rotate while approaching or leaving the cutterhead at a set speed. The equipment is simple in structure and convenient to operate, the cutting thickness of the rock sample can be accurately adjusted, the cutting process is automatic, operation of professionals is not needed, the cutting efficiency is remarkably improved, and the equipment has wide application prospects.

The invention discloses a rock sampling and detecting device in geological drilling, and belongs to the technical field of geological drilling, the rock sampling and detecting device comprises a base, a sampling mechanism for collecting rock is arranged on the base, and a detecting mechanism for detecting the collected rock is arranged on the side edge of the sampling mechanism; the sampling mechanism comprises an adjusting mechanism which is mounted on the base and is used for changing the position of the device, a drilling mechanism is arranged on the adjusting mechanism, the detection mechanism comprises a fixing mechanism for fixing a sample rock, and a testing mechanism for detecting the pressure of the rock is arranged on the fixing mechanism; through cooperation of a fixing cylinder, a drilling cylinder and a grooving cylinder on the drilling mechanism, the adaptation rate can be increased, two clamping plates arranged in a placement groove extrude each other to extrude an internal rock sample, and the rock is conveniently taken out; meanwhile, through mutual cooperation of three arc-shaped extrusion plates on the fixing mechanism, rocks of different sizes can be fixed, pressure is given to the sample rocks from different directions for fixing, and the stability of the sample rocks is improved.

The invention belongs to the technical field of oil exploration and development, and relates to a rock drillability evaluation method based on rock debris nanoindentation, which comprises the following steps: carrying out nanoindentation test on a rock debris sample, collecting a displacement load curve of an indenter, and calculating the microhardness of the nanoindentation test; calculating the mineral composition of the rock debris according to the statistical distribution characteristics of the microhardness, and converting the microhardness of the rock debris nanoindentation test into macroscopic indentation hardness; and according to the relevance between the macroscopic indentation hardness of the rock and the drillability grade value of the rock, establishing the drillability grade value of the rock, which is represented by the microhardness of the rock debris nanoindentation test. Under the conditions that the number of underground rock samples is small and the cost is high, the method breaks through the limitation of a conventional test on the size and shape of the sample, solves the problem of testing the mechanical parameters of deep rocks in the field of oil and gas drilling, is a powerful supplement to a conventional test method, and provides a basic support for optimizing a drill bit and improving the drilling speed.

The invention discloses a method for measuring the volume of mixed concrete slurry, which comprises the steps of 1) testing the volume V0 of mixed concrete; 2) sieving the mixed concrete by a first sieve, drying, and testing the mass m1 and density [rho]1 of the material left on the first sieve; 3) sieving the material passing through the first sieve by a second sieve, drying, and testing the massm2 and density [rho]2 of the material left on the second sieve; 4) firstly sieving stone samples by the first sieve, then sieving the stone samples by the second sieve, and testing the mass fractionx21 and density [rho]21 of stones passing through the first sieve and the mass fraction x22 of stones left on the second sieve; 5) sieving sand samples by the second sieve, and testing the mass fraction x3 of sand passing through the second sieve to the total amount of concrete sand and the density [rho]3 of the sand passing through the second sieve; and 6) calculating the volume of the slurry. The actual slurry volume of the fresh mixed concrete can be obtained according to the method, and the accuracy is high.

Various embodiments of the present invention are directed towards a system and method relating to depositing vapor in a sample. For example, a device includes a vapor source chamber configured to contain a vapor source material to generate vapor. An activation chamber is configured to contain a sample. The activation chamber is in fluid communication with the vapor source chamber to receive the vapor. A permeable separator divides the vapor source chamber and the activation chamber, and isolates the sample in the activation chamber while allowing vapor to pass between the vapor source chamber and the activation chamber. The device is sealable and configured to apply vacuum to the vapor and sample, to cause deposition of the vapor into the pumice stone samples.

The present invention provides a method for CO 2 A rock three-dimensional pore structure determination method for water-rock reaction, the method comprising: cutting a collected rock columnar sample into a first rock sample and a second rock sample; determining the porosity of the first rock sample before the experiment, and obtaining the Multiple micro-drill samples, determine the volume ratio of each micro-drill sample; determine the porosity of the second rock sample before the experiment; reset each micro-drill sample on the corresponding position of the second rock sample, and place the first rock sample and the second rock sample The rock samples were assembled and packaged; the packaged samples were subjected to CO 2 Water-rock reaction experiment; determine the porosity of the first rock sample after the experiment, determine the porosity of the second rock sample after the experiment; determine the pore change characteristics of the first rock sample, and determine the pore change characteristics of the second rock sample; according to the second rock sample The pore change characteristics of the first rock sample are constrained to determine the pore structure evolution characteristics of the rock columnar sample.

The invention relates to the technical field of medical images, in particular to a common CT computer imaging omics stone component analysis system and method, and the system comprises a central processing system, a data collection unit, a data analysis module, printing equipment and a mobile phone terminal. The input end of the central processing system is unidirectionally and electrically connected with a system firewall, and the data collection unit is connected with the system firewall through a wireless network. Calculus components are analyzed through CT computer imaging omics and compared with data in a database, the defects of an existing calculus analysis method are overcome, and the calculus analysis method has the advantages that calculus can be detected and analyzed more accurately and effectively, data are prevented from being lost in the transmission process, and then detection errors can be reduced. The problem that at present, infrared spectrum detection analysis is mainly adopted for calculus component analysis, the infrared light absorption band characteristic of a calculus sample is not high enough, and certain errors exist in detection of some calculus components is solved.

The invention belongs to the field of sampling of detection samples of building materials, and particularly relates to a gravel sample collection cylinder which comprises a barrel and a material taking part, a first material storage cavity is formed in the barrel, the material taking part is arranged in the first material storage cavity, the material taking part comprises an inner baffle limiting piece and a plurality of inner baffles, one end of each inner baffle is provided with a mounting end, and the mounting ends are rotationally connected with the cavity wall of the first material storage cavity. After the multiple inner baffles are connected with the cavity wall of the first material storage cavity, the multiple inner baffles form a material blocking part, and the material blocking part corresponds to the first material storage cavity in position; and the inner baffle limiting piece is arranged at the bottom of the inner baffle, one end of the inner baffle limiting piece is connected with the cavity wall of the first material storage cavity, a limiting face is arranged on the inner baffle limiting piece, and after material taking is finished, the limiting face abuts against the bottom of the inner baffle, and the limiting face can limit opening of the material blocking part. The gravel sample collection cylinder is convenient for taking materials, and solves the problem of long sampling period of gravel samples.