77 results about "Calcareous" patented technology

The invention relates to a calcareous sand unit test broken particle tracking and matching method based on a digital image, which comprises the following steps: S1, taking a calcareous sand unit test picture, and making the taken test picture into a two-dimensional picture with three-dimensional information; s2, performing instance segmentation by using the SAM; s3, the BoT-SORT algorithm is improved; s4, tracking an instance segmentation result in the step S2 by using the BoT-SORT algorithm improved in the step S3; s5, using a PIV algorithm to track the part except for the instance segmentation in the S2; s6, performing feature point extraction on the instance segmentation tracking result in the step S4 by using an SURF, and performing matching on the extracted feature points by using a KNN matching algorithm to obtain a particle crushing matching result; and S7, making a final result graph. According to the method, non-uniform grading particle tracking and crushing matching can be realized through the CNN without training, and the method has extremely high robustness and generalization ability.

The invention discloses a repair and conservation construction method for damaged travertine natural landscapes and geological landscapes. The method comprises the steps that the travertine landscape damage type and grade are evaluated based on the travertine damage area, depth and range; the method comprises the following steps: selecting homogeneous and in-phase high-calcium mineral materials and microbial agents to prepare primitive materials, and carrying out grading modulation, so that the primitive materials have a multi-stage pore structure; preparing a calcareous ecological restoration material by adopting an element material; the natural travertine building is repaired, constructed, subjected to infiltration reduction, subjected to leaking stoppage, maintained, conserved and expanded by using the calcium ecological restoration material through a series of construction methods; and after dynamic maintenance of the travertine construction body, restoration and conservation of natural landscape and geological landscape of travertine are completed. The method has the advantages of good environmental compatibility, high repairing efficiency and strong authenticity. The permeability coefficient of the repaired landscape reaches 10 <-4 >-10 <-2 > cm / s, the self-bonding strength is 1-25 MPa, biological co-deposition can be effectively adhered, continuous deposition of newborn travertine on the surface of travertine is promoted, and the method has wide application prospects.

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 present invention discloses the system and method of preparation of a surface-modified crystalline blend to enhance the properties of water by optimizing its mineral composition, alkalinity, and bioavailability. The crystalline blend comprises Tourmaline, Shungite, Jade, Silica, Zeolite, Lava Stones, and Calcareous Shale, with additional minerals like Maifan, Calcite, and Dolomite to enhance water quality. The invention utilizes Bioactive Crystal Resonance Technology (BCRT), wherein individual minerals are heated below their phase transition temperature to activate them while maintaining their crystalline state providing controlled activation and ensuring a regulated release of beneficial minerals, preventing excessive increases in pH or TDS levels while significantly reducing heavy metal leaching. The system includes a perforated membrane leveraging irregularly shaped crystals ranging from 0.5 to 5mm, allowing water to interact with the modified minerals to restore essential nutrients, increase hydration efficiency, improve detoxification, alkaline water, and provide antioxidant benefits.

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 biological reinforcement and corrosion protection process for bridge pier cracks, comprising: S1, extracting calcium ions from South China Sea calcareous sand to obtain a calcium chloride solution; S2, installing a reaction sleeve mold reaction device at the location of the cracked bridge pier, filling the gap between the bridge pier and the mold reaction device with South China Sea calcareous sand particles in three batches, and injecting bacterial solution, urea, and the calcium chloride solution obtained in step S1 in batches for cyclic infusion, and repeating the cyclic infusion process. This invention, by using the calcium chloride solution extracted from South China Sea calcareous sand and the bacterial solution for cyclic infusion, can achieve biological reinforcement of bridge pier cracks, resulting in better compatibility and permeability with the bridge pier substrate material. It can penetrate even the smallest cracks, and the generated calcium carbonate crystals can effectively and better bond with the bridge pier substrate material, playing a role in filling and bonding cracks. It also has the advantages of low cost, convenient material sourcing, few and safe byproducts, and no pollution to the marine environment.

The invention discloses a method for rapidly optimizing calcareous sand fixing bacteria based on extracellular polysaccharide content detection, which is used for optimizing bacterial strains with excellent sand fixing performance and rapidly providing microbial resources for reducing coral island soil erosion. The method provided by the invention can shorten the subsequent inspection on the calcareous sand consolidation capacity of the strain, can judge the sand consolidation capacity of the strain only by accurately measuring the exopolysaccharide content of the purified strain, can greatly save the time cost, provides a large number of strain resources for sand consolidation and erosion prevention of the coral island, and has a wide application prospect. The method has the advantages of simple operation, low cost, easy popularization and the like.

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 invention discloses a culture nutrient solution suitable for directionally improving the maximum water-holding capacity of coral island calcareous sand cyanobacteria crust. The culture nutrient solution contains 25g / L of glucose, 0.025 g / L of sodium dihydrogen phosphate, 0.1 g / L of potassium chloride, 0.05 g / L of magnesium chloride, 0.1 g / L of sodium nitrate, 0.005 g / L of ferrous chloride and the balance of water. Based on the cyanobacteria crust collected in situ, the hydrological characteristics of the cyanobacteria crust from the coral island calcareous sand are directionally improved by utilizing the artificially prepared culture nutrient solution, so that the development of the cyanobacteria crust can be promoted, the maximum water holding capacity of the crust can be improved, the use amount of an inoculation material is saved, the influence on the environment is reduced, and the economic benefit is increased. Therefore, the accumulation capacity of fresh water in the coral island is improved, a good material foundation is laid for change of an ecological environment system of the coral island, and the method has wide application value.

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 invention discloses a sample preparation device for a calcareous sand test, which comprises a base, a mounting frame and a forming cylinder arranged on the base, and further comprises a feeding assembly, a spraying assembly, a knocking assembly and a driving assembly, the feeding assembly is connected with the mounting frame and is positioned above the forming cylinder, and a screen is arranged in the feeding assembly; the spraying assembly is connected with the feeding assembly and used for spraying the adhesive into the forming cylinder. The knocking assembly is arranged on the base, corresponds to the forming cylinder and can abut against the feeding assembly. The driving assembly is arranged on the mounting frame and connected with the feeding assembly so that the feeding assembly can rotate partially, the screen can reciprocate in the horizontal direction, and the knocking assembly knocks the outer wall of the forming cylinder in a reciprocating mode. The forming effect of the calcareous sand is effectively improved, and the accuracy of subsequent mechanical property testing of the calcareous sand can be improved.

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 present invention relates to a rapid prediction method for the particle size distribution curve of calcareous sand under different loading paths, comprising the steps of: obtaining the particle size distribution curves of calcareous sand with the same initial gradation and initial void ratio under different confining pressures under the condition of isotropic compression test; calculating the relative breakage rate under the isotropic compression test; determining the stress-strain relationship of the calcareous sand specimen in the compression test under different loading paths; calculating the total input energy; obtaining the particle size distribution curve; calculating the relative breakage rate under different loading paths; determining the size of the characteristic particle size; plotting the data scatter relationship diagram; obtaining the fitting parameters; and obtaining the rapid prediction equation. The present invention solves the influence of the stress path on the gradation evolution law, so that the particle size distribution model is not affected by the matching degree between the actual particle size distribution and the functional relationship of the assumed particle size distribution curve; and enables the influence of the stress path on the particle size distribution not to be restricted by the initial gradation condition, broadening the application conditions and application scenarios.

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 discloses a calcareous sand bank slope undermining identification method and system based on fiber bragg grating monitoring, and the method comprises the following steps: arranging a fiber bragg grating displacement sensor at the top of a calcareous sand bank slope, and obtaining the real-time deformation parameters of the calcareous sand bank slope through the fiber bragg grating displacement sensor; replacing a modified Cambridge elastic-plastic constitutive model in an original calcareous sand cumulative deformation elastic-plastic explicit calculation model HCA with a soil state related constitutive model, and simulating calcareous sand bank slope deformation parameters under different erosion parameter combinations by adopting the improved HCA model; fitting the mapping relation between the undercut parameters and the calcareous sand bank slope deformation parameters to obtain an undercut identification model; and according to the historical deformation parameters of the calcareous sand bank slope and the corresponding undermining condition, training an undermining identification model, and inputting the real-time deformation parameters into the trained undermining identification model to obtain the real-time undermining condition of the calcareous sand bank slope.

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.

The invention relates to the technical field of seepage experiments, in particular to a calcareous sand simulation water level circulation lifting seepage experiment device and experiment method.The calcareous sand simulation water level circulation lifting seepage experiment device comprises a box body and a precipitation barrel located below the box body, the bottom of the box body is a filter plate provided with a plurality of through holes, the interior of the box body is of a hollow structure used for being filled with calcareous sand samples, and a box cover is arranged on the upper portion of the box body; the tank cover is provided with an upper exhaust port and an upper water inlet connected with the bottom of the water column, the upper portion of the water column is connected with the water tank, the settling barrel is provided with a lower water outlet and a lower connector, the lower water outlet is connected with the water collection measuring cylinder, and the lower connector is connected with a water level regulation and control system used for controlling water level circulation lifting. According to the invention, non-invasive fine particle migration path visualization can be realized, and meanwhile, tide water level cyclic rising and falling can be realized, so that the stability of the calcareous sand foundation under the action of long-term rainfall and water level cyclic rising and falling can be researched.

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.