43 results about "Calcareous" patented technology

The present invention relates to the technical field of sediment or sludge treatment of a water body, and provides a solidification material and a use thereof. The solidification material consists of the following components in percentage by mass: 30% of a sediment flocculant, 20% of a high-strength and high-water-resistant earth consolidator, 30%-40% of calcium bentonite, 5%-15% of a clay mineral, and 5% of an engineering admixture. When the solidification material is used in the sediment or sludge treatment of the water body, pollutants in sediments can be well immobilized, and as tested, no leaching of the pollutants occurs after immersion in the water body. Moreover, the usage amount of the solidification material is significantly reduced compared to that of a conventional solidification material, so that the impact on the storage capacity of the water body can be effectively reduced, and the construction cost is also saved.

The invention provides a formula design method and device and a computer readable storage medium, and belongs to the technical field of cementing materials. The method comprises the following steps: acquiring an input value, wherein the input value is one of formula data and performance data of the cementing material; the performance data is 3d compressive strength CS, and the formula data is a calcination temperature F, and a content correction value x of the calcium solid waste, a content correction value y of the phosphogypsum and a content correction value z of the red mud in the raw materials; according to a first formula and the input value, an output value is obtained through prediction, and the output value is the other one of the formula data and the performance data; wherein the formula I is as follows: CS = K * (45.57 to 5.31 * A + 4.52 * B + 16.45 * C + 3.36 * AB + 0.0875 * AC-4. 45 * BC-28.26 * A-4. 80 * B-9. 35 * C + 0.9375 * AB-17.19 * AC + 4.83 * AB). The invention aims to provide the prediction method which can predict the relationship between the formula and the performance expression of the cementing material and is beneficial to reducing the difficulty and the cost of formula design.

This invention discloses a method, system, and medium for optimizing parameters of complex tight oil and gas reservoirs. The method includes: determining reservoir sections based on logging curves; selecting test sections based on these sections; obtaining the number, location, and calcium content of natural fractures based on the logging and imaging curves of the test sections; classifying reservoir types according to the number, location, and calcium content of natural fractures; including porous reservoirs, fractured reservoirs, and mixed reservoirs; determining perforation locations using different perforation determination methods for different reservoir types; optimizing the scale of proppant addition and fluid usage using different stimulation techniques and parameters; optimizing the pump sequence using different fracturing methods; and completing the proppant addition and fluid usage in stages. This invention overcomes the problems of abnormal construction and poor matching between fracturing parameters and reservoir conditions in conventional proppant fracturing methods in complex reservoirs, enabling full utilization of complex reservoirs and increasing single-well production.

The application provides an island reef coral filler compaction pile and a construction method thereof. The construction method of the island reef coral filler compaction pile comprises the following steps: (1) using a weight to hammer the ground soil body to form a cylindrical hole; (2) first filling mixed sand and stone into the hole, the mixed sand and stone is composed of coral reef gravel and calcareous sand, then pouring a microbial curing liquid and a composite additive, the microbial curing liquid is composed of a composite bacterial liquid and seawater, the composite bacterial liquid is prepared from bacillus pasteurii, bacillus cereus and bacillus mucilaginosus, and the composite additive is composed of hydroxyl citronellal and eucalyptol; then using the weight to ram the filler; (3) repeating step (2) to ram and fill the pile hole to the ground to form the compaction pile. The construction method can significantly improve the quality of the compaction pile, significantly improve the single pile bearing capacity, and effectively reduce the relative usage amount of the microbial curing liquid.

The present invention relates to a device 1 for comminuting particularly calcareous minerals to produce a middle fraction for use in a fluidized bed, wherein the device 1 comprises a material feed 20, a good bed roller mill 30, a first size-selective separation device 20.a second size-selective separating device 40, a middle fraction outlet and a fine fraction outlet, wherein the good bed roller mill 30 has a mill inlet 31 and a mill outlet 32, wherein the first size-selective separating device 20 has a first material inlet 21, a first fine outlet 22 and a first coarse outlet 23, wherein the second size-selective separating device 40 has a second material inlet 41, a second fine outlet 42 and a second coarse outlet 43, wherein the material feed 20 is connected to the first material inlet 21, wherein the first coarse outlet 23 is connected to the mill inlet 31, wherein the mill outlet 32 ​​is connected to the first material inlet 21, wherein the first fine outlet 22 is connected to the second material inlet 41, wherein the second coarse outlet 43 is connected to the middle fraction outlet, wherein the second The fine outlet 42 is connected to the fine fraction outlet.

The invention relates to the technical field of yellow phosphorus slag utilization, and discloses a process for producing a silicon-calcium fertilizer by using yellow phosphorus slag, which is characterized in that the yellow phosphorus slag is used for preparing a SiO2 product, and then the yellow phosphorus slag, a calcium adjusting material, a siliceous optimizing material, a binder and a functional additive are mixed and granulated to form the silicon-calcium fertilizer. According to the scheme, through the synergistic effect of chemical activation and thermal activation, the existence form and release characteristics of nutrients are fundamentally changed, so that the fertilizer meets the growth cycle requirements of crops, and the problems that a traditional silicon-calcium fertilizer is insufficient in release in season and ineffective in later-stage residue are solved; the physiological functions of the silicon element in the aspects of enhancing the mechanical strength of plants, resisting diseases and insect pests, resisting lodging and the like are fully exerted.

A method for curating a machine learning training library of calcareous nannofossil images for automated biostratigraphic analysis. The method includes receiving a plurality of images of various source materials from a target geologic time period. A subset of images is selected, comprising images from both a hydrocarbon-rich region and a hydrocarbon-poor region. A training library is generated based on this subset, enabling the development of machine learning models capable of accurate fossil identification and classification across diverse geological settings.

The invention relates to the technical field of calcareous sand property research, and discloses a calcareous sand impact crushing test device which comprises a sample barrel, a supporting frame, a guide rod, a pressure applying hammer and a pressure bearing plate, the sample barrel is used for containing calcareous sand, the supporting frame is fixedly connected with the sample barrel, the guide rod is vertically arranged in the sample barrel, and the pressure applying hammer is fixedly connected with the supporting frame. The pressure applying hammer and the pressure bearing plate are arranged on the guide rod in a sleeving mode and can slide along the guide rod. Compared with the prior art, the device is simple and reliable in structure and easy to operate, the defects that an existing simple device is poor in impact precision and low in repeatability are overcome, the structure of the device can be rapidly adjusted through assembly and disassembly of a small number of components, then different tests are completed, and the device is particularly suitable for teaching, basic research and field application. The invention further provides a calcareous sand impact crushing test method, initial gradation of calcareous sand and impact parameters such as impact times and impact energy are coupled to form a model, and popularization research and teaching practice of calcareous sand impact crushing characteristics are facilitated.

This invention provides a method for microbial soil nailing slope reinforcement based on microbial-induced calcium carbonate precipitation, belonging to the field of geotechnical engineering technology. The invention involves drilling holes in the slope surface and filling these holes with calcareous sand. A slurry containing urease-producing bacteria is injected into the calcareous sand-filled holes, and the mixture is allowed to stand. Then, a cementing liquid is injected to induce microbial calcium carbonate precipitation, resulting in a microbial soil nailed slope reinforcement. This invention creatively combines MICP technology with soil nail structure, using MICP technology to replace traditional cement grouting. This generates calcium carbonate crystals that cement the calcareous sand and surrounding soil, reducing the swelling and shrinkage of expansive soil under rainwater conditions. It inhibits slope surface collapse under alternating wet and dry conditions and reduces the possibility of shallow landslides during these processes. Simultaneously, it improves the shear strength and pull-out resistance of the nail-soil interface, reducing environmental pollution.

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.

One aspect of the invention relates to a fluid evaporator (8) for a steam cooking device (1), the fluid evaporator having a holding basin (10) for a fluid (3), a heating device (9) for evaporating the fluid (3) in liquid state in the holding basin (10), a filter (19) arranged in the holding basin (10), characterized in that the filter (10) is a calcareous particle filter which is configured as a filter tube (20), wherein the filter tube (20) has a filter opening (29) such that calcareous particles can be filtered in the event of a flow of the fluid (3) in liquid state through the filter tube (20). One aspect relates to a steam cooking device (1).

The present invention relates to a method for obtaining slurry from mussels and / or mussel culture waste products. It makes it possible to reduce the waste produced in the cultivation of Black Sea mussels. The liquefaction method used is a sequence of four steps involving acid and alkaline dissolution carried out at room temperature and atmospheric pressure. The first stage involves dissolving the shell and calcareous deposits with concentrated nitric acid. The second stage involves separating the undissolved mass from the solution obtained in the first stage. The third step comprises alkaline hydrolysis of the undissolved mass separated in the second step using potassium hydroxide. The fourth stage comprises mixing and neutralizing the solutions obtained from the first and second stages, followed by adjusting the pH of the final product in the range 6,4-6,8.

The application discloses a kind of cultivation nutrient solution suitable for directional improvement of maximum water-holding capacity of calcareous sand cyanobacterial crust of coral island.The cultivation nutrient solution contains: glucose 25g / L, sodium dihydrogen phosphate 0.025g / L, potassium chloride 0.1g / L, magnesium chloride 0.05g / L, sodium nitrate 0.1g / L, ferrous chloride 0.005g / L, and the balance is water.The application is based on in-situ collection of cyanobacterial crust, and uses artificial preparation of cultivation nutrient solution to directionally improve hydrological characteristics of cyanobacterial crust from calcareous sand of coral island, which can promote the development of cyanobacterial crust, improve the maximum water-holding capacity of crust, save the use amount of inoculation material, reduce the influence on environment, thereby improve the storage capacity of freshwater of coral island, lay a good material foundation for the change of coral island ecological environment system, and therefore have wide application value.

The invention discloses a method for extracting calcareous microfossils of consolidated sediments, which comprises the following steps: S1, taking a rock core sample or a rock debris sample of the consolidated sediments, cleaning the surface of the rock core sample or the rock debris sample, and crushing the rock core sample or the rock debris sample to obtain a debris sample; s2, weighing a chipping sample, soaking the chipping sample in water, heating the chipping sample, and then freezing the chipping sample to obtain a frozen sample; s3, hydrogen peroxide is added into the frozen sample and mixed, then sieving and cleaning are conducted, and first particles are obtained; adding a weakly alkaline reagent and heating to obtain a first mixture; s4, adding an anti-flocculating agent into the first mixture, mixing, and carrying out ultrasonic treatment to obtain a second mixture; and then sieving, cleaning, drying and collecting a particle sample. According to the method, more calcareous microfossils are physically separated out, chips adhering to the surfaces of the calcareous microfossils fall off, chemical decomposition of the fossils and adhering particles is promoted, meanwhile, preservation of fossil shells is facilitated, and fine particles are prevented from being flocculated and precipitated.

The application discloses a kind of tight sandstone reservoir pore quantitative evolution calculation method of crack not development, including obtaining the relevant data of the quantitative evolution calculation of pore in research area;The quantitative parameter related to pore evolution is counted by the relevant data;According to the relevant data, the reservoir diagenetic stage analysis, main diagenesis type and diagenetic evolution sequence of different diagenesis are determined;According to quantitative parameter, initial porosity is calculated;The total porosity lost by compaction is calculated;The total porosity lost by calcareous, siliceous and clay cementation is calculated;The total porosity increased by dissolution is calculated;The total amount of transformation of kaolinite late transformation is calculated;With reservoir diagenetic evolution sequence, burial history and oil and gas charging period as constraint, the size of reservoir porosity at different depths is calculated.The method of the application can better analyze the pore evolution process of deep tight sandstone reservoir with large burial depth, poor physical property and complex diagenesis.

The application discloses a kind of coral island biological soil crust GZS001 that can promote the hydrological ecological characteristics of coral island calcareous sand, with good hydrological ecological effect, can significantly improve the ecological freshwater accumulation and circulation of coral island calcareous sand, provide stable water resources for the planting of higher vegetation, improve the nutritional status of calcareous sand, and lay a good material foundation for the ecological system repair and natural succession of coral island. At the same time, the application of this biological crust can reduce the impact on the environment, and can be widely used, with the advantages of simple operation, low cost, quick effect, easy popularization, etc.

The invention relates to the technical field of geotechnical engineering, and particularly provides a particle swarm optimization improved calcareous sand particle crushing energy calculation method and system. The method comprises the following steps: acquiring triaxial experiment data and peak point data; according to the triaxial experiment data and the peak point data, a multi-objective optimization function is constructed based on a stress-expansion fracture model framework; solving a minimum value of the multi-objective optimization function by adopting a particle swarm optimization algorithm to obtain an optimal value of an optimization parameter, and calibrating an initial friction angle of the calcareous sand; calculating a critical state angle according to the initial friction angle, and establishing an evolution equation in a friction angle shearing process; the stress-expansion crushing model equation is changed, calcareous sand particle crushing energy is calculated in combination with calcareous sand triaxial experiment data, a crushing energy evolution process is fitted, and a calcareous sand particle crushing energy evolution equation is established; according to the method, the crushing energy of the calcareous sand particles is calculated, the evolution process of particle crushing can be continuously represented, and a corresponding evolution equation can be established.

This invention relates to the field of marine geotechnical engineering technology, and provides a method and system for monitoring the shear state of calcareous sand based on acoustic emission centroid frequency. The method includes conducting a ring shear test on the calcareous sand to obtain the shear stress-shear displacement curve during the shearing process; attaching an acoustic emission sensor to the loading plate of the ring shear tester and using an acoustic emission monitoring system to collect acoustic emission signals during the shearing process; performing impact detection on the acoustic emission signals and extracting the waveforms of the impact signals; calculating the average centroid frequency of all impact waveforms within each preset time period; and based on the change in the average centroid frequency, analyzing the micromechanical mechanism of shearing in the calcareous sand and providing early warning of shear zone development and failure. This method can monitor the shear state of calcareous sand throughout the entire process and can be used for early warning of shear failure in calcareous sand foundations and other sandy soil materials in marine engineering.

This invention relates to the field of geotechnical engineering, specifically to a method for reinforcing calcareous sand based on a biomimetic tortoise-shell pattern geomembrane using layered embedding. This invention combines the biomimetic principles of tortoise-shell structures with modern geosynthetic material technology to construct a scientifically sound integrated "material-structure-process" solution, which is expected to provide a new technical approach for calcareous sand foundation treatment and promote the progress and development of marine geotechnical engineering technology.

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.

This invention discloses a method for classifying and naming foraminiferous mixed sedimentary rocks, comprising the following steps: S1, identifying and classifying the rock composition to obtain initial values ​​for the content of three types of components, including terrigenous clastic components, low-energy / chemical carbonate components, and biogenic calcareous components; the low-energy / chemical carbonate components include mud, and the biogenic calcareous components include foraminifera; S2, identifying, classifying, and statistically analyzing the infilling components of foraminifera to obtain statistical data on the infilling components and calculating the foraminifera infilling rate; S3, based on the initial values ​​of the three types of components, combined with the statistical data on the infilling components and the foraminifera infilling rate, calculating the final values ​​of the content of the three types of components; S4, based on the final values ​​of the content of the three types of components, using a pre-established triangular diagram with the three types of components as endmembers, determining the final classification and naming of the rock. This invention improves the method for classifying and naming foraminiferous mixed sedimentary rocks by optimizing the component classification and introducing foraminiferal infilling component parameters.

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.

This invention provides a plate-type borehole expander suitable for expansive soil strata with large-particle-size calcareous nodules, including an expander body; a drill rod; a guide plate, the guide plate being a layout of six adjacent plates with an included angle of 60°; and cutting teeth, the cutting teeth being arranged in a triangular staggered arrangement on the lower surface of the guide plate. The advantages are that it not only prevents the drill from getting stuck, but also ensures force balance and stability, and improves rock breaking efficiency and cuttings removal capacity.

The present application relates to a kind of low-grade silicon calcareous collophanite gangue mineral synchronous removal inhibitor and application, the inhibitor includes methylene bis naphthalene sulfonic acid sodium 40~70 parts, polysaccharide polymer 15~30 parts and organic acid 15~30 parts by mass fraction.The inhibitor provided in the present application contains active groups such as sulfonic acid group, hydroxyl group and carboxyl group in raw material, can occur strong adsorption with dolomite, iron-aluminum sesquioxide and activated quartz and other gangue minerals in silicon calcareous collophanite, mask the active site of gangue mineral surface, inhibit the adsorption of collector on the surface of gangue mineral, and by the reasonable proportioning between raw materials, can significantly improve the grade and recovery rate of phosphate concentrate, effectively reduce the content of harmful impurities therein.

The application discloses a kind of calcareous sand grouting diffusion reinforcement simulation device and experimental method under seawater environment, belong to island and reef engineering geological disaster prevention field.It includes: seawater environment simulation system, calcareous sand layer simulation system, data acquisition and monitoring system, grouting and slurry storage system;Seawater environment simulation system forms seepage circuit;Calcareous sand layer simulation system is arranged in seawater environment simulation system, and two ends are connected with two groups of grouting pipe and a group of exhaust port;Data acquisition and detection system includes pressure sensor buried in different positions of calcareous sand layer, sensor is connected with signal collector, and is fed back to computer control platform by signal collector;Grouting and slurry storage system inputs slurry from slurry storage barrel into calcareous sand layer simulation system.By first water tank, second water tank and flow rate control mechanism, the inflow and flow rate of seawater and the formation of seepage circuit can be controlled, the real seawater environment can be accurately simulated and restored, and the grouting test simulation research can be conveniently carried out indoors.

A method for curating a machine learning training library of calcareous nannofossil images for automated biostratigraphic analysis. The method includes receiving a plurality of images of various source materials from a target geologic time period. A subset of images is selected, comprising images from both a hydrocarbon-rich region and a hydrocarbon-poor region. A training library is generated based on this subset, enabling the development of machine learning models capable of accurate fossil identification and classification across diverse geological settings.

The invention relates to a standardized sample preparation device and method based on a coral sand SHPB test. The standardized sample preparation device comprises a base, a bottom cushion block arranged above the base and a sleeve arranged above the bottom cushion block, a driving hammer seat abutting against the upper portion of a sample is arranged in the sleeve, a compaction hammer is movably connected to the driving hammer seat in the vertical direction, and a limiting piece is arranged on the compaction hammer. The device adapts to sample preparation requirements of non-viscous and weakly viscous sand such as coral sand and calcareous sand, a heat shrinkage film packaging technology is combined, the passive confining pressure during sample impact can be regulated and controlled in a mode of overlapping multiple layers of heat shrinkage films, accurate reduction of test working conditions and actual engineering scenes is realized, the application range of the device is expanded, and the device is suitable for large-scale popularization and application. Precise limiting and leveling in the compaction process are achieved, the compactness and uniformity of a sample and the flatness of a cushion block are guaranteed, the sample preparation process is simplified, the sample preparation efficiency is improved, SHPB test equipment is prevented from being damaged, and universality and practicability are both achieved.

The invention discloses a carbon dioxide reinforced calcareous sand unit test device. The device consists of a reaction kettle, a reaction kettle cold and hot control system, a CO2 injection system and a pressure control system, the reaction kettle jacket cooling and heating equipment is used for heating or cooling the reaction kettle, the CO2 injection system is used for introducing CO2 gas into the reaction kettle, and the pressure control system is used for monitoring and controlling the pressure in the reaction kettle. The test device provided by the invention can accurately simulate the reinforcement effect of the calcareous sand under laboratory conditions, and provides precious theory and experience for site construction. In addition, the cost of field experiments can be saved, and problems possibly occurring in the construction stage can be solved in advance.

1. The name of the design product: pet lamp (T5T8). 2. The use of the design product: the design is used for irradiating reptiles and promoting calcium absorption of reptiles. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.