56 results about "Sand sample" patented technology

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 discloses a multispectral photoelectric sand meter signal fusion and sand content calculation method and system. The method comprises the following steps: collecting multiple groups of different sand contents, photoelectric signal data of a multispectral photoelectric sand meter, corresponding sand content data, temperature data and water depth data; preprocessing the original photoelectric signal; performing feature extraction on the curve of each column of processed signal values changing along with the sand content; performing curve fusion; an improved particle swarm optimization algorithm is adopted to automatically optimize the positions of segment points and the polynomial order of fitting of each segment, and the function relation between the fusion value of each curve signal and the sand content in the standard environment is subjected to segment fitting; in a field test environment, temperature and water depth compensation is carried out on the signal values, and a sand content value corresponding to the test sand sample is reversely solved by utilizing different signal data based on a function relationship; sand content data is manually measured by combining with a field sand sample, and a sand content result of the sand meter is dynamically corrected by scattering reference light of different wavebands. According to the invention, rapid output and correction of the sand content of the to-be-measured liquid can be realized.

The invention provides a multi-temporal-spatial-scale river sediment tracing method, and relates to the field of geomorphology and river dynamics. According to the method, light release light (OLS) samples of terraces and floodplains and zircon sand samples of corresponding layers are collected on the sections of a source (branch) and a sink (main stream), and different age sequences are divided in combination with contemporary zircon sand samples of a tender beach; the contribution rate of a source to a sink is directly calculated by using a zircon age spectrum matrix, and a quality contribution rate algorithm is optimized in combination with a zircon mass percentage. According to the method, contemporary and historical multi-time-scale sediment traceability is realized, the traditional fitting simulation process is simplified, the calculation efficiency and accuracy are improved, and the method is suitable for sediment source analysis in areas poor in data.

The invention relates to the technical field of bed sand sample collection, and discloses a riverbed sand sample collection method, which comprises the following steps: connecting a rope with a connector, lifting the rope to keep a sand excavation cylinder in a longitudinal arrangement state, enabling the sand excavation cylinder to fall into a water body from top to bottom, and enabling the water body to enter a sand excavation cavity through a water permeable hole until the whole sand excavation cylinder is submerged into the water body; the sand excavation cavity is filled with water; the sand excavation barrel continues to be put down in the water body until the bottom plate abuts against the riverbed, then the rope is put down by a set length so that the sand excavation barrel can fall down to be in a horizontal shape, and the two balance weight levers can automatically rotate and be adjusted so that the two balance weight levers can abut against the riverbed; after the sand excavation barrel is kept standing in a horizontal state for a set time, the rope is pulled to drive the sand excavation barrel to move, the sand excavation opening is downwards and obliquely inserted under the balance weight effect of the balance weight rod, and sand on a riverbed enters the sand excavation cavity through the sand excavation opening; after the sand excavation cylinder is pulled by the rope to move by a set distance, the rope is lifted to lift the sand excavation cylinder out of the water body, and sand sample collection is completed.

The application discloses a kind of foam fluid inhibits soil body permeability damage test device and its test method, the device includes main structure, variable head control unit, pore pressure monitoring unit, computer analysis unit, foam fluid injection unit, foam fluid injection unit includes liquid input module, gas input module, foam generator, liquid input module and gas input module are connected with foam generator, and foam generator output end is connected with main structure;The test method includes assembling device, fills sand sample in sand tank, and carries out test by injecting foam fluid into sand tank;Water head is promoted gradually, and after seepage is stabilized, next stage water head test is carried out, and the change process of the permeability damage area of sand sample top surface and the change of foam fluid occurrence range are recorded, and pore pressure monitoring unit is used to monitor the pore pressure in sand sample in real time, when permeability damage area and water inlet chamber are connected, stop test.The application can be used to verify and evaluate the effect of foam fluid inhibiting soil body permeability damage.

The invention discloses a liquid pulse type water area sand source investigation device and method, and belongs to the field of water engineering sand source investigation. The device comprises a hull structure, a supporting structure, a pipeline structure, a drilling structure and a control system, the drilling structure is driven by multiple strands of independent water flow pulses to vertically penetrate into a sand layer, and an integrated sensor collects sand source mechanical parameters (end resistance, side resistance and pore water pressure) in real time and synchronously recovers a sand sample. The computer control center dynamically adjusts the water flow pulse pressure by collecting drilling structure perpendicularity parameters in real time through the integrated sensor, drilling perpendicularity closed-loop control is achieved, and sand source investigation can be completed without casing running. The problems that traditional drilling depends on a sleeve, an operation window is narrow and labor cost is high are solved, and the method has the advantages of accurate positioning, efficient operation and digital intelligent control and is suitable for various water area sand source investigation scenes.

The invention relates to a machine-made sand online detection system, and belongs to the technical field of concrete detection, the machine-made sand online detection system comprises a sampling module, a weighing module, a screening and drying module, an image acquisition module and an analysis module, the sampling module is used for taking a machine-made sand sample from a production line and sequentially putting the sample into the weighing module and the screening and drying module; the screening and drying module comprises a dispersing pipe, an air blower, a heating machine and a screening channel, the air blower is used for supplying air pressure in the radial direction of the dispersing pipe, the heating machine is used for heating the dispersing pipe and the air blower, and the screening channel is arranged on the other side, located on the air blower, of the dispersing pipe; the air blower is used for blowing dust in the dispersion pipe into the screening channel, and the air blower is used for being matched with the heating machine to dry a sample in the dispersion pipe; the method has the advantage of being high in efficiency.

This invention discloses a measurement system and method suitable for measuring the sand-fixing capacity of vegetation roots in the field, comprising: a sample lifting device, a field module, a measurement module, a sand sample crushing device, and an integrated control system. This invention can simultaneously achieve real-time and high-precision monitoring of data such as sand content and flow velocity during experiments. It quantifies and analyzes the sand-fixing capacity of vegetation roots through parameters such as soil erosion rate and critical initiation velocity of soil sediment, making it particularly suitable for determining the sand-fixing capacity of vegetation roots in coastal areas.

The utility model relates to artificial sand mud content detection technical field, and disclose a kind of artificial sand mud content detection device, including machine body, and for containing sand sample beaker, still include: rotation connection on the stirring shaft of machine body, hollow formation water inlet channel in stirring shaft inside, the side wall of bottom is equipped with the water outlet hole of intercommunication water inlet channel;Lifting connection on the base of machine body, for driving beaker to stirring shaft close or away;At least one water suction pipe, fixedly connected on the machine body, water suction pipe bottom extends into beaker, and water suction pipe water inlet end detachably connected with filter screen, filter screen is located in the side of water outlet hole;The utility model is through lifting base to facilitate beaker to dismount, hollow stirring shaft water injection cooperation side filter screen, utilize water flow scouring anti-blocking, ensure that drainage is smooth, and integrated water supply and water suction component realize automatic elutriation, replace manual operation, significantly improve detection efficiency and result accuracy, satisfy large quantities engineering detection demand.

The invention discloses a traceability analysis system for a river sediment source in a cold highland area, and belongs to the technical field of sediment traceability. Comprising a data acquisition module, a sediment fingerprint database building module, a source region identification model building module, a sediment source inversion module, a space-time thermodynamic diagram generation module and a visual display module. And the sediment source inversion module is used for carrying out source contribution rate inversion on sediment samples collected by the target river section, the inversion method adopts a non-negative least square method, the feature vectors of the target samples are fitted on the feature vectors of all the source areas in the fingerprint database, and the contribution proportion of each source area to the samples is calculated. The method does not depend on initial artificial point distribution or physical marking of a field source area, a source area fingerprint database is constructed based on natural fingerprint characteristics of sediment, a passive, non-interference and traceable traceability identification mode is achieved, and the method is suitable for application requirements under extreme terrains and seasonal freeze-up restrictions in cold and cold mountainous areas.

The utility model discloses a division device for building sand samples, which relates to the technical field of building sand tests and comprises a fixing shaft, a cylinder rotatably connected to the outer side of the fixing shaft, a rotating handle fixedly connected to the outer wall of the cylinder, a plurality of sand outlet doors fixedly mounted on the bottom surface of the cylinder, and a first clamping groove, a second clamping groove and a third clamping groove sequentially formed in the inner surfaces of the sand outlet doors. The clamping groove I, the clamping groove II and the clamping groove III are respectively and correspondingly clamped with a circular baffle I, a circular baffle II and a circular baffle III, and the tops of the cylinder, the circular baffle I, the circular baffle II and the circular baffle III are respectively clamped with a divider I, a divider II, a divider III and a divider IV which are used for dividing a sand sample into equal parts. According to the utility model, simple and repeated manual division is replaced by a mechanical device, so that the workload and the labor intensity of testers can be reduced; in addition, the working efficiency of sand sample division and the precision of a sand sample division test can be improved.

The utility model discloses a calcareous sand saturation device for a triaxial test, and relates to the technical field of indoor geotechnical tests of geotechnical engineering. The device comprises a supporting sample bearing structure, a sealing sample preparation structure, a hydraulic pneumatic structure and a gas-liquid supply structure. The supporting sample bearing structure consists of a base, a sliding rod, an upper sliding table, a lower sliding table and a top table; the sealed sample preparation structure comprises a sealing assembly and a sample preparation assembly; the hydraulic pneumatic structure comprises a hydraulic assembly and a pneumatic assembly and is used for controlling lifting of the sliding table and pressure maintaining and air exhausting of the sealing assembly. The gas-liquid supply structure provides CO2 gas and gas-free water for sample saturation and discharges redundant gas and liquid. According to the utility model, through the lifting type sealing assembly structure and the stepped sealing design, and the sequential action of the negative pressure pump, carbon dioxide gas and gas-free water, air in a calcareous sand sample is effectively discharged, a highly saturated state is quickly achieved, the accuracy of a subsequent triaxial test result is remarkably improved, and the test efficiency is improved. The sealing performance is excellent, the operation is simple, and the structure is stable.

The utility model relates to the technical field of experiment simulation devices, and discloses an electric field coupling type multi-well interference simulation experiment table which comprises a machine body, heat dissipation mechanisms are installed on the front side and the rear side of the inner wall of the machine body, the heat dissipation mechanisms are used for blowing air to dissipate heat of components in the machine body, and a compaction mechanism is installed in the middle of the top wall of the machine body. The compaction mechanism is used for compacting a detected sandy soil sample, and the guide mechanisms are mounted on the front side and the rear side of the interior of the machine body and used for guiding; the heat dissipation mechanism comprises a square block, and the square block is installed on the front side of the inner wall of the machine body. According to the utility model, the square block circularly moves along with the movement of the belt, so that the fan covers a wider area, the heat dissipation effect is improved, and the problems that the existing fan can only dissipate heat in the equipment in a single direction and cannot synchronously blow air to cool parts at different positions in the equipment, and the cooling effect is poor are solved. And high-temperature damage to the equipment is further caused.

This utility model provides a fully automatic cuttings sampling and cleaning device for oil logging, relating to the technical field of oil logging sampling and cleaning devices. It includes a housing, inside which a cleaning mechanism is installed. The cleaning mechanism includes several limiting cylinders, each containing the interior of the housing. Two auxiliary bearings are fixedly connected to the inner wall of each limiting cylinder. A rotating cylinder is located inside each limiting cylinder, with the inner wall of the inner ring of each auxiliary bearing fixedly connected to the outer surface of the rotating cylinder. A cleaning cylinder is located inside each rotating cylinder, and several arc-shaped cleaning frames are fixedly connected to the inner wall of each cleaning cylinder. A spiral frame is also located inside each cleaning cylinder. This fully automatic cuttings sampling and cleaning device for oil logging enables better cleaning of cuttings and sand samples during use, ensuring effective cleaning and increasing the accuracy of subsequent cuttings and sand sample testing data.

The invention provides a method for rapidly detecting the mud content of artificial sand based on a current value and application, and belongs to the technical field of sand detection. The detection method comprises the following steps: adding an artificial sand sample and water into an electrolytic tank, stirring, standing to obtain a turbid liquid, connecting a cathode and an anode of the electrolytic tank, measuring a current value of the turbid liquid, substituting the current value into a standard curve equation taking the mud content of the artificial sand as an abscissa and the current value as an ordinate, and calculating the mud content of the artificial sand. And calculating to obtain the mud content of the artificial sand sample. Meanwhile, the invention further comprises application of the method in evaluation of the concrete performance, and the influence of the mud-containing artificial sand on the concrete mixture performance can be rapidly evaluated according to the current value by establishing the relationship between the mud content of the artificial sand and the corresponding current value when the slump of the concrete suddenly drops.

This invention discloses a real-time detection method for the moisture content of fine aggregates in concrete production, belonging to the field of fine aggregate moisture content detection. The method includes: acquiring several sand samples with different moisture contents for different fine aggregates; extracting stable feature values ​​of the signal from the original signal sequence acquired by a microwave moisture content sensor for each sand sample using the sliding window density peak method; calculating the average thickness, average flow velocity, and average temperature; constructing a first prediction model based on an enhanced multiple regression model; constructing a second prediction model based on a tree model; determining the optimal moisture content prediction model from the first and second prediction models; and in concrete production, acquiring the stable feature values, thickness, flow velocity, and temperature of the signal in real time, and calling the optimal moisture content prediction model for the corresponding fine aggregate to predict the moisture content. This invention solves the problem of measurement inaccuracy caused by random fluctuations in the original signal and variable material flow conditions when using microwave methods to detect the moisture content of sand and gravel online.

The application discloses a kind of digital sand sample disc and its using method, it is related to well drilling engineering technical field, to solve the problem of low work efficiency of existing artificial cuttings logging mode, the digital sand sample disc includes sand sample disc body, the bottom of sand sample disc body is equipped with filter screen and water draining groove, filter screen is located above water draining groove, RFID radio frequency tag is equipped on the top of sand sample disc body, RFID radio frequency tag is used to collect the data of cuttings, detection device is equipped in sand sample disc body, detection device is used to detect the temperature, humidity and weight of cuttings in sand sample disc body in real time, control device is equipped on the top of sand sample disc body, control device is signal connected with RFID radio frequency tag and detection device, so setting, can realize the automation process of cuttings logging, improve the work efficiency of cuttings logging.

This invention discloses an underwater angle of repose measurement device and method for sand bodies under controllable background turbulence intensity in dynamic water conditions. The device includes a support frame, a base plate, a cylindrical platform, a hollow cylindrical baffle, sidewalls, an upstream baffle, a downstream baffle, a turbulence grid, an image acquisition module, and a supplementary lighting module. The hollow cylindrical baffle is fitted around the cylindrical platform to laterally confine the sand sample and form an initial cylindrical sand body. After extraction, the sand body naturally collapses underwater to form a cone. The upstream and downstream baffles form a local still water measurement zone. The turbulence grid can be inserted into different slots on the upstream side of the cylindrical platform, and different background turbulence intensity conditions can be created by changing the grid parameters. The image acquisition module is used to acquire a side view image of the sand cone and calculate the underwater angle of repose. This invention can achieve angle of repose measurement under still water, incoming current, and controllable background turbulence intensity in dynamic water conditions within the same device, and has the advantages of convenient operation and good measurement repeatability.

The invention discloses a sand soil stratified sampling device and a sampling method thereof, and belongs to the technical field of sand sampling equipment.The sand soil stratified sampling device comprises a workbench and a direct push drilling machine, a drill rod body is arranged at the output end of the direct push drilling machine, and the drill rod body comprises a connecting shaft, a connecting pipe, a drill bit and a far-point sampling mechanism; the far-point sampling mechanism comprises a sampling pipe, a rotating frame, a first guide block and a second guide block, and the first guide block and the second guide block are jointly connected with a moving frame and a guide assembly in a sliding mode. By means of the sand sampling device, in the sand sampling process, a wrapping layer, composed of surface layer sand grains and upper layer sand grains, of the outer wall of the sampling pipe can be broken through, far-point area sampling is conducted, and the sampling efficiency is improved; sand grains around the sampling pipe are prevented from being collected, meanwhile, the sand grains are in the natural downward flowing trend due to underground pressure, and the guide pipe obliquely moves upwards in the opposite direction, so that the sand grains cannot flow into a sampling area along with the guide pipe, and it is guaranteed that the collected sand grains all come from an original soil layer with the target depth.

The application discloses a kind of based on multi-modal fusion's flocculating agent residual influence evaluation method and system, the method includes the following steps: S1, by surface charge sensor, optical sensor and surface roughness detector, the electrical characteristic data, optical characteristic data and geometric morphological characteristic data of the surface of measured mechanism sand sample are collected;S2, corresponding multidimensional feature vector is extracted;S3, the multidimensional feature vector is input into the multi-modal fusion prediction model that is trained in advance, and the predicted fluidity loss rate value of the measured mechanism sand sample is obtained;S4, the predicted fluidity loss rate value is compared with preset safety threshold, and the corresponding flocculating agent residual evaluation result is generated.Thereby, by comparison with safety threshold, the influence of PAM residual amount on the fluidity of mortar is preliminarily screened, to provide basis for subsequent processing decision, and prediction is carried out in combination with machine learning model, in combination with machine learning and chemical detection means, sand sample detection is realized.

The invention provides a saturated sand sample preparation device for seepage observation and a use method thereof.The saturated sand sample preparation device comprises a support, the support is connected with a support mechanism in a lifting mode through a lifting driving mechanism, a sand storage device is placed on the support mechanism, and a sand dispersing mechanism with the constant falling distance is connected to the lower portion of the support mechanism; the sand dispersing mechanism comprises a screen and a laser range finder used for measuring sand, the support mechanism further comprises a support controller used for controlling the lifting driving mechanism to ascend and descend, the laser range finder is in electric signal connection with the support controller, and a model box is placed below the sand storage device. The laser range finder and the support controller used for controlling the support mechanism to ascend and descend form a feedback adjusting mechanism, in the sand scattering process, the distance between the bottom of a screen of the sand scattering mechanism and the sand accumulation surface in the model box can be automatically adjusted, and therefore precise and automatic constant control over the sand compactness is achieved.

The utility model discloses sand tank soil sample push-out equipment, which belongs to the technical field of soil sample push-out and comprises a bottom box, hydraulic control equipment and a hydraulic booster are mounted above the bottom box, and the lower portion of the hydraulic control equipment extends into the bottom box and is connected with the bottom of the hydraulic booster. An auxiliary pushing structure is arranged above the hydraulic booster, a limiting block is arranged on one side of the auxiliary pushing structure, a switching structure is connected to the auxiliary pushing structure, and clamping structures are arranged on the two sides of the switching structure. According to the sand tank soil sample pushing-out equipment, the hydraulic control equipment, the clamping structure, the hydraulic booster and the auxiliary pushing structure are arranged, a sand tank is locked through the clamping structure, then the hydraulic control equipment is operated to control the hydraulic booster to move upwards, a boosting plate drives a boosting column to conduct sand pushing operation upwards, disturbance in the sample pushing process can be effectively reduced in the process, and the sand tank soil sample pushing-out efficiency is improved. And meanwhile, the working efficiency is improved, the treatment time is shortened, and the use is convenient.

The invention discloses a sand sampling device for geological exploration, which belongs to the technical field of geological exploration and comprises a rack, a mounting plate is vertically and slidably mounted on the side edge of the rack, and a lifting mechanism for driving the mounting plate to lift is arranged at the top end of the rack. The sampling barrel is sleeved with the nylon net barrel, the bottom end of the nylon net barrel is used for blocking the bottom end of the sampling barrel, and the position of the bottom end of the nylon net barrel is precisely limited through the lifting rope, so that the nylon net barrel is automatically and synchronously released along with depth extension of the sampling barrel in the sampling process; the sand samples with different depths can be completely collected in the nylon net barrel in sequence, the continuity of collection and storage is guaranteed, the sand samples do not make contact with the inner wall of the sampling barrel, the problem that the sand samples adhere to the inner wall of the sampling barrel is fundamentally avoided, meanwhile, the sand samples are independently stored in the nylon net barrel in the whole process, the nylon net barrel is a disposable article, and the sand samples are not prone to falling off. And the problem of sample cross contamination during sampling at different depths and in different areas is effectively avoided.

The application discloses a reef underground fresh water lens model test calcareous sand permeability coefficient prediction method and system, belongs to the technical field of coral reef island fresh water lens model test, and comprises the following steps: determining a geometric similarity ratio according to the geometric scales of a prototype and a model; deriving a permeability coefficient similarity ratio based on dimension analysis, and determining a target permeability coefficient of the model; constructing a multi-parameter coupling prediction model with effective particle size, uneven coefficient and porosity as inputs; obtaining grading parameters and permeability coefficients of different proportioning calcareous sand samples through orthogonal test, and solving undetermined coefficients of the model; and determining a model calcareous sand proportioning scheme according to the target permeability coefficient and the calibrated prediction model. The application establishes a permeation similarity criterion, constructs a three-time correction prediction model considering the double-pore structure of calcareous sand, realizes directional control of the permeability coefficient, and solves the problems of imperfect similarity design and unreasonable material substitution in the prior art.

The invention provides an automatic feeding type annular sand scraping rain method sanding device and method.The automatic feeding type annular sand scraping rain method sanding device comprises a model box and further comprises an automatic feeding mechanism, a sand shakeout mechanism and a lifting control mechanism, the automatic feeding mechanism comprises a sand storage box and a spiral feeding mechanism, the sand shakeout mechanism comprises a scraper and a flow equalizing plate, the flow equalizing plate is detachably connected to a supporting frame, and the lifting control mechanism is connected with the scraper. The spiral feeding mechanism and the scraper are driven by the power mechanism, a discharging port of the spiral feeding mechanism is located above the flow equalizing plate, the scraper can rotate so as to flatten sand on the surface of the flow equalizing plate, a plurality of sand shakeout holes are formed in the flow equalizing plate, and the model box is located below the flow equalizing plate. The lifting control mechanism can control the model box to ascend and descend according to the height of sand in the model box, through cooperative work of the automatic feeding mechanism and the sand shakeout mechanism, it is effectively guaranteed that the sand outflow is constant, the sand falling distance is constant through the lifting control mechanism, and therefore the problem that the compactness of a sand sample is not uniform is solved.

The present application relates to the method for determining the shear strength of calcareous sand under different stress paths quickly, comprising the steps of using the same initial porosity, grading, sample preparation method, saturation method, preparing multiple calcareous sand samples; performing isotropic compression test; obtaining particle size distribution curve, calculating relative breakage rate; again performing isotropic compression test; performing three different stress path tests; recording the deviatoric stress and axial strain in the three different shear processes; obtaining the maximum value of deviatoric stress; obtaining particle size distribution curve, calculating total relative breakage rate; calculating the relative breakage rate of three shear stages; drawing data scatter plot; obtaining fitting parameters, obtaining the fast prediction equation The present application is more suitable for predicting the shear strength of calcareous sand foundation under complex engineering environment; only through simple screening test, the shear strength of calcareous sand can be obtained; it is more suitable for actual engineering; it is more practical; and it provides valuable theoretical basis.

The invention belongs to the technical field of constructional engineering, and particularly relates to a screening device for detecting the fineness modulus of sand and a screening detection method. According to the sand screening device, the sealing assemblies of the sealing parts are matched with the fixing assemblies, elastic sealing rings are arranged at the top and the bottom of each screening ring, tight sealing between the adjacent screening layers is achieved through vertical pressing of the upper pressing rings, the lower pressing rings and the connecting rods, and sand can be effectively prevented from being scattered from gaps in the screening process; the whole device is comprehensively protected through a protection barrel body and a sealing cover assembly of the protection part, external impurities can be prevented from entering the device, parts can be prevented from being collided and damaged, a stable frame structure is formed in combination with the fixing assembly, and the screen layer can be effectively prevented from loosening and shifting in the screening process; meanwhile, a spring assembly is adopted to buffer vibration impact force, and damage of vibration to the weighing sensor and other parts is reduced; and a preset sand fineness modulus algorithm is adopted, so that the sand sample fineness modulus can be accurately and efficiently obtained.

The invention provides a method for quantifying the erosion influence degree of a mountainous area drainage basin and determining the duration time based on 10Be and 14C. Comprising the steps of 1, dividing a secondary drainage basin; 2, sample collection is conducted on the divided drainage basins, wherein modern sand samples are collected in each drainage basin; collecting a sediment profile sample in the severely damaged drainage basin; 3, quartz is extracted, the 10Be concentration of each sample is measured, and the 14C age of the plant residue or sediment sample is measured; 4, storing the 10Be concentration of the intact drainage basin to obtain a background value of the erosion rate of the drainage basin; the 10Be concentration of the damaged drainage basin is combined with the background value to obtain the man-made sediment yield; and step 5, in combination with the 10Be concentration-depth distribution, the 10Be yield and the 14C age of the sediment sample, obtaining the man-made sediment yield, the damage time and the duration. According to the method, the 10Be concentrations of the sediments in different drainage basins are measured, and the aim of scientifically and quantitatively evaluating the sediment yield and the duration time of the influence caused by human activities seriously damaging the drainage basins is achieved; the method is high in operation efficiency, strong in portability and good in result reproducibility.

The invention discloses a preparation method of dredged sand ecological functional nutrient soil. The method comprises the following steps: A, collecting a dredged sand sample; b, carrying out grading pretreatment on the dredged sand sample; c, mixing the pretreated dredged sand with an organic matter raw material, a slow-release mineral modifier and a composite functional microbial agent to obtain a mixture; d, performing staged stacking fermentation on the mixture, namely promoting pollutant degradation in an early heating stage, maintaining 55-65 DEG C in a middle stage to inactivate pathogenic bacteria, enriching functional flora in a later cooling stage, and adjusting oxygen concentration and humidity through a monitoring system; and E, screening the fermented material to obtain the dredged sand ecological functional nutrient soil. The method has the advantages that the sustained release capacity of nutrients such as nitrogen, phosphorus and potassium is improved, the utilization rate of the nutrients is increased, and the decomposition degree of organic matters and the activity of functional bacteria are improved.

The application discloses a zirconium-titanium placer delineation method, device, equipment, medium and program. The method comprises the following steps: obtaining geophysical prospecting data of a target sea area, determining a target landform unit according to the geophysical prospecting data; determining the weight and volume of a target sand sample, and determining target mineral components in the target sand sample based on a TIMA mineral analysis system; the target sand sample is a placer sample collected from the target landform unit; the target mineral grade is calculated according to the weight, volume and target mineral components of the target sand sample; and the target mineral area is delineated from the target landform unit according to the target mineral grade. The scheme solves the problem of low zirconium-titanium placer delineation efficiency, divides the target landform unit in the target sea area, analyzes the mineral components of the target rock sample collected in the target landform unit based on the TIMA mineral analysis system, realizes rapid and accurate calculation of the mineral grade, and thus realizes rapid and accurate delineation of the zirconium-titanium placer.