28results about How to "Improve field applicability" patented technology

The invention discloses a water-preserved mining distinguishing method for in-situ protection of floor confined water. The water-preserved mining distinguishing method comprises the following steps that the average distance between a mining coal seam floor and an aquifer, the average thickness of the aquifer, the average permeability, the working face length and the advancing distance length are determined; the average depth of the mining floor fracture zone and the average thickness and the average permeability of all rock strata below the fracture zone are tested, and the equivalent permeability is obtained; the water pressure of the confined aquifer is tested and counted, and target water pressure is determined; calculating the allowable coal mining loss water resource quantity; determining a critical equivalent permeability coefficient; the equivalent permeability is compared with the critical equivalent permeability, and the calculated water inflow is compared with the safe recovery water inflow of the working face; and finally, the feasibility of water-preserved mining of in-situ protection of the confined water of the floor is judged. Based on the dynamic water storage and release characteristics of the confined aquifer, the mining floor effectively obstructs the overall water blocking performance of the rock stratum, the water-preserved mining judgment method for in-situ protection of the confined water of the floor is provided, operation is easy and convenient, and the field applicability is high.

The invention discloses a method for judging crude oil density based on a three-dimensional quantitative fluorescence technology and a related device. The method comprises the steps of obtaining fluorescence data of a rock core and rock debris; performing mathematical statistics, parameter extraction, combined calculation and sensitivity screening on the fluorescence data to obtain oil index parameters; and establishing a two-dimensional evaluation chart according to the oil index parameters, and displaying different crude oil density distribution areas. According to the method, parameters such as fluorescence excitation, emission wavelength, oil concentration, crude oil fluorescence intensity, well completion oil testing crude oil density and the like of a rock core and rock debris three-dimensional quantitative fluorescence technology are obtained through mathematical statistics, parameter extraction, combined calculation and sensitivity screening, and the corresponding relation between the three-dimensional quantitative analysis wavelength and the fluorescence intensity parameter is fully excavated and utilized; the correlation is analyzed, the accuracy of the obtained result is higher, and the error range is smaller than 5%.

The invention discloses a laneway risk section multi-scale geological prediction method based on air-well-hole combination, and relates to the technical field of laneway risk section multi-scale geological prediction, and the method comprises the steps: carrying out the geological exploration of the earth surface of an area where two parallel mine laneways are located before mining, and defining a risk geological section in combination with the geological disaster characteristics; carrying out aviation electromagnetic detection on the earth surface above the corresponding risk geological sections of the two parallel roadways, and judging whether a geological body between the two roadways has a water-containing body or a water guide structure according to a detection result; according to the judgment result, oblique drilling is conducted from the risk-free roadway to a geologic body behind the mining face of the high-risk roadway, drilling parameters in the drilling process are obtained, and drilling rock slag is collected; on the basis of the drilling rock slag, the rock lithology, the unfavorable geologic body type and the abnormal degree in the geologic body between the two roadways are judged in combination with the spectrum technology; and sound wave testing is carried out in the hole, the integrity of the rock mass is judged by combining the drilling parameters and the sound wave velocity value, and multi-scale accurate geological prediction of the laneway risk section is completed.

The present application belongs to the technical field of geotechnical engineering test, and relates to a system and method for rapidly determining the permeability coefficient of low-permeability soil in situ, which comprises an inner sleeve, an outer sleeve, a pressurizing device and a pore water pressure sensor. The inner and outer sleeves are simultaneously driven into the soil to a specified depth, and then the outer sleeve is further pressed to form a sealed test cavity; water is injected into the inner sleeve and the top is closed, and a stable air pressure is applied through the pressurizing hole to accelerate the permeation; the pore water pressure sensor pre-embedded at the bottom of the outer sleeve is used to monitor the transient change data of the pore water pressure at the soil permeation interface in real time and in situ, instead of the traditional external water level change. Based on the monitored pressure decay data, the soil parameters can be calculated. Compared with the prior art, the present application discards the unreliable water level observation link, shortens the test time from several days to several hours, fundamentally avoids the errors introduced by the capillary effect and hysteresis effect, and realizes the rapid and high-precision test of low-permeability soil in situ.

A reusable temporary sealing device for post-cast strips includes a metal cover plate, a keel frame, a sleeve, and a lifting and fixing rod. The keel frame is welded above the reinforcing bars of the post-cast strip. A through-hole sleeve is vertically installed at the center of the keel frame. The metal cover plates are placed one by one above the upper keel frame of the post-cast strip according to the positioning lines. The connecting parts of the metal cover plates are processed into insert-shaped folded edges. The metal cover plates are connected at the insert-shaped folded edges by C-shaped flat inserts. After connection, a continuous U-shaped weather-resistant rubber strip is installed on the side of the metal cover plate. The metal cover plate is attached to the keel frame and connected by electric welding. A lifting and fixing rod is installed inside the sleeve. The bent part of the lifting and fixing rod hooks to the reinforcing bars of the post-cast strip. The threaded section of the lifting and fixing rod extends upward from the sleeve. This utility model uses a steel keel and metal cover plate structure, which is sturdy, durable, and highly safe. The sealing plate uses a snap-fit ​​connection, and the edges are made of rubber and pre-pressed to fit the structural surface, making it highly adaptable to the field and providing high sealing performance.

The invention discloses an A annulus under-pressure simulation method for leakage points of a gas storage injection-production string on the liquid level of annulus protection liquid, which comprises the following steps: setting the depths and equivalent diameters of different leakage points of the injection-production string to obtain the external pressure of the injection-production string and the equivalent area of the leakage points corresponding to the leakage points; acquiring the volume of gas leaked from the ith leakage point at the nth time node of the injection-production pipe column; acquiring the top pressure of the A-ring air column at each time node; judging whether the internal and external pressures of the injection-production string at the ith leakage point are balanced or not, and if so, stopping the leakage at the point; when all leakage points stop leakage, the pressure of the A annulus is stable; and drawing a simulated pressure recovery curve through the top pressure of the A-ring air column at each time node, comparing the simulated pressure recovery curve with an actual pressure recovery curve, and judging whether the set depths and equivalent diameters of different leakage points are reasonable or not. According to the method, possible pipe column leakage points can be judged, the underground operation workload is reduced, and the working efficiency is improved.

The application discloses a pitting extreme depth distribution prediction method based on a rusted galvanized steel wire image, takes a steel wire group as a prediction object, collects a rusted surface image of a training steel wire group in a training stage, generates a local image block through pretreatment, extracts corrosion characteristic features and carries out group-level fusion to form a training sample feature vector; three-dimensional measurement is carried out on the same steel wire group after rust removal, a pitting depth field is constructed, block extreme values are extracted and extreme value distribution is fitted, the obtained extreme pitting depth distribution parameters are taken as target outputs, and a pitting extreme depth distribution regression prediction model is trained; in a prediction stage, the same treatment is carried out on an image of a steel wire group to be measured and the trained model is input, and the pitting extreme depth distribution parameters of the steel wire group to be measured are output. The application establishes a quantitative mapping between the rusted image features and the three-dimensional pitting extreme value distribution parameters after rust removal, does not need rust removal and three-dimensional measurement in the prediction stage, and improves the field applicability of corrosion detection of parallel steel wire system components such as in-service bridge cables, hangers and main cables.

The utility model discloses a boiler heating surface pipe foreign matter falling prevention plugging plug with multi-caliber adaptability, which comprises a plugging plug body, a connecting chain and a magnetic spring clip, one end of the connecting chain is connected with the plugging plug body, and the other end of the connecting chain is connected with the magnetic spring clip; the plugging plug body comprises an elastic plug and an end cover, and the elastic plug is connected to the bottom of the end cover; the elastic plug comprises an elastic cone and elastic pressing plates, and the elastic pressing plates are circumferentially distributed on the outer side of the elastic cone. The pipe orifice temporary plugging device can adapt to temporary plugging of pipe orifices in a certain specification range, and has high field applicability; and the connecting chain and the magnetic spring clamp are additionally arranged, so that the plugging plug can be locked outside the pipe, the plugging plug is prevented from falling off and hurting people, the pipe and the like due to improper installation and the like, and the use safety is high.

This invention relates to a dual evaluation method for fracturing performance of shale reservoirs based on a cohesion-friction-bedding coupling model. It includes: preparing shale samples with different bedding angles; conducting Brazilian splitting experiments, uniaxial compression experiments, and triaxial compression experiments to obtain time-load curves and stress-strain curves for shale at different bedding angles; and constructing a shale brittleness index under uniaxial stress. B un Determine the degradation coefficient of shale brittleness due to confining pressure. B wc Constructing the brittleness index of shale under triaxial stress conditions B tr Shale brittleness index under triaxial stress conditions B tr This invention combines well logging data to predict the distribution of rock brittleness across the entire block and well section, clarifying reservoir compressibility, and integrates with geological modeling software to predict fracture morphology and fracturing effectiveness. This invention solves the problems of inconsistent rock brittleness assessment results and the difficulty in combining them with geophysical data for application in anisotropic shale, which negatively impacts shale reservoir fracturing design and fracturing effectiveness evaluation.

The application discloses a kind of service concrete penetration type anti-freezing protective material and preparation method thereof, belong to concrete protection technical field.The composition of the protective material is: organic silicon modified penetration enhancement component 30~60 parts, nano-crystalline component 10~30 parts, microbial self-repairing component 5~20 parts, composite silane coupling agent 2~8 parts, penetration accelerator 1~5 parts, stabilizer 0.5~3 parts, defoaming agent 0.1~1 part, water 10~50 parts.The application constructs "hydrophobic barrier-crystallization densification-microbial self-repairing" triple synergistic protection system, solves the technical bottleneck that existing concrete protective material penetration depth is shallow, long-acting protection stability is poor, has no active crack repair capacity, construction is complicated, and on-site adaptability is poor.The application preparation process is simple, product performance is stable, cost-effective, can long-acting improve the frost resistance of concrete structure in severe cold area.

The application discloses a kind of based on deep learning's plate shape control spray flow optimization method, it is characterized in that include following steps: S1 data acquisition: obtain plate specification parameter, process parameter, spray system state parameter and plate shape measurement data, and with time stamp and volume number / rolling section identification;S2 data pre-processing: to the acquisition data is washed, abnormal processing, normalization or standardization, feature engineering, and with sliding time window Construction time series sample;S3 prediction model: the sample after pre-processing is input into long short-term memory network containing self-attention mechanism, and the flow setting value of spray system is output;By this method, the dynamic optimization and real-time adjustment of spray flow can be realized, the plate shape control precision and production adaptability are improved, and the trial-and-error cost and artificial experience dependence are reduced.

The invention provides a track irregularity signal compression and reconstruction method and system based on a compressed sensing theory, and mainly relates to the technical field of railway infrastructure health monitoring and big data processing. According to the method, the sampling accuracy in the engineering field is mainly improved, redundant information is reduced, the system bottleneck of storage and transmission is improved, a measurement matrix irrelevant to a sparse transformation base is introduced at a signal acquisition end, and a compression observation value far lower than the Nyquist rate is directly obtained. And then, an original track irregularity signal is reconstructed from a small number of observation values with high precision by solving a norm minimization problem at a data processing end. According to the method, the front-end data sampling rate, the hardware load and the data transmission and storage requirements are greatly reduced, meanwhile, it is guaranteed that the reconstructed signal meets the engineering analysis precision, and a core technical scheme is provided for a new-generation efficient and low-cost track detection system, real-time train-structure system dynamic analysis and the like.

The invention discloses a multi-scale geological prediction method for risky sections of shafts and tunnels based on air-well-hole combination, which relates to the technical field of multi-scale geological prediction for risky sections of shafts and tunnels. A pre-mining geological survey is conducted on the surface of the area where two parallel mine tunnels are located, and the risky geological sections are delineated in combination with geological disaster characteristics; an aero-electromagnetic detection is conducted on the surface above the risky geological sections corresponding to the two parallel tunnels, and whether the geological body between the two tunnels has a water-containing body or a water-conducting structure is judged according to the detection result; according to the judgment result, an oblique drilling is conducted from the risk-free tunnel to the geological body behind the mining face of the high-risk tunnel, and the drilling parameters in the drilling process are obtained, and the drilling slag is collected; based on the drilling slag, the lithology of the rock mass, the type of unfavorable geological body and the degree of abnormality in the geological body between the two tunnels are judged in combination with spectral technology; an acoustic wave test is conducted in the hole, and the integrity of the rock mass is judged in combination with the drilling parameters and the acoustic wave velocity value, so as to complete the multi-scale accurate geological prediction for the risky sections of shafts and tunnels.

This invention relates to the field of exterior wall construction technology, specifically a single-sided formwork stabilization device for basement exterior walls. It includes an installation rod, with a template fixedly connected to one side of the installation rod. A sliding groove is provided on the installation rod. A blocking mechanism is provided on the installation rod, template, and sliding groove. The blocking mechanism includes two installation slots, two guide slots, two rotating rods, two round rods, a lifting seat, and two first-strength magnets. The beneficial effects of this invention are: by setting up a linked blocking mechanism, when the support mechanism is deployed, the two blocking frames automatically merge and close the hinges, sliding grooves, and other key structures on the installation rod, effectively preventing the intrusion and adhesion of impurities such as flying stones, cement mortar, and wet concrete debris from the construction site. This fundamentally avoids problems such as poor hinge rotation and sliding groove jamming, ensuring smooth adjustment and rotation of the device throughout the entire process, and significantly improving the reliability of the formwork support device.

This invention discloses a finite element method, storage medium, and computer program product for the microstructural evolution of rock masses based on material heterogeneity mapping. The method includes data acquisition; parameter inversion; mesh construction; coordinate registration; weighted statistics; assigning equivalent parameters to elements; adaptive mesh refinement in high-gradient regions; model initialization and solution: initial field loading and boundary condition definition are completed, and elastoplastic or multi-field coupled calculations are performed. The advantage of this invention is that it improves the predictive ability of the finite element model for the non-uniform deformation and microstructural evolution of rock masses.

The invention relates to a pheromone attractant for attracting bemisia tabaci. According to the pheromone attractant beta-myrcene, beta-myrcene and alpha-pinene, the trapping effect of the bemisia tabaci can be remarkably improved by soaking the blank lure, and the pheromone attractant has a relatively strong trapping effect on female bemisia tabaci and male bemisia tabaci and has the characteristics of long lasting period, greenness, safety and strong field applicability; the prevention and control requirements of bemisia tabaci pests in the field can be met.

The present invention provides a multifunctional sampling and injection device and a detection device and method having the device, the device comprises: a guiding structure, an analysis port, an analysis chamber, an osmotic chamber, a storage chamber, a first carrier gas path and a first injection pipeline, the analysis port is connected to the guiding structure, the analysis chamber is respectively connected to the analysis port and the air extraction port, the output end of the air extraction port is connected to the suction pump, the osmotic chamber is separated from the analysis chamber by a semipermeable membrane, and the two ends thereof are respectively connected with an air inlet and an air outlet, the carrier gas is mixed with the sample to be tested through the first carrier gas path and then injected; it also comprises a quantitative sampling path and a second injection path, the quantitative sampling path comprises a quantitative loop and a sampling pump, the second injection path comprises a second carrier gas path and a second injection pipeline, the carrier gas is mixed with the sample to be tested in the quantitative loop through the second carrier gas path and injected. The device in the present invention can perform qualitative or quantitative sampling and injection for multi-morphological samples, greatly improving the field applicability and application range of the detection equipment.

The application belongs to the technical field of virus DNA enrichment. More particularly, it relates to a method and a kit for enriching low-concentration pathogen nucleic acid in water bodies. The enrichment cracking solution and the eluent constructed by specific proportion produce synergistic effect, efficiently crack the pathogen, and promote the target nucleic acid to be directionally adsorbed on the magnetic beads, so that the enrichment efficiency and detection sensitivity are significantly improved, the originally undetectable or weakly positive low-load samples are stably detected, and the false negative rate is greatly reduced. The enrichment reagent provided by the application is simple to prepare, the water sample does not need complex pretreatment, and the sample treatment and enrichment operation can be completed integrally on site. The method is excellent in anti-matrix interference, process simplification, reagent saving, operation speediness and on-site applicability, overcomes the technical bottleneck that low-load pathogens and nucleic acids easily cause false negatives in detection, helps the breeding farm to take disease prevention and control measures in time, and has good application prospect and value.

This invention provides a composition for preventing and controlling black spot disease in Panax notoginseng, relating to the field of Panax notoginseng black spot disease control technology. (1) Chitosan nanoparticle carrier with a particle size of 50-200 nm, and surface modified with carboxymethyl or tripolyphosphate ions; (2) Active ingredients loaded on the chitosan nanoparticle carrier, including polyoxin and tea tree oil; (3) The content of polyoxin in the composition is 5-15 wt%, and the content of tea tree oil is 1-3 wt%; (4) The active ingredients are bound to the nanoparticles by electrostatic adsorption or covalent bonding, and the cumulative release rate is ≤30% within 48 hours at 25°C. This invention controls drug release (48-hour release rate ≤30%) through electrostatic adsorption / covalent bonding of chitosan nanoparticle carrier, so that the drug forms a long-lasting protective film on the leaf surface, extending the effective period from 5 days of traditional preparations to 10-15 days, and reducing the frequency of application by more than 50%.

The utility model discloses a high -efficient centrifugal ventilator of boiler exhaust gas suitable for inflow distortion, including air inlet tank, air inlet tank one side is provided with anti distortion current collector, and anti distortion current collector one end communicates with air inlet tank, and anti distortion current collector other end is not into volute, and anti distortion current collector is not into volute one end outside and is provided with airfoil impeller. High -efficient centrifugal ventilator of boiler exhaust gas suitable for inflow distortion, through optimizing the airflow import flow state, effectively reduced the internal flow loss of centrifugal ventilator, thereby significantly improved the whole machine operating efficiency, especially in the design working condition vicinity efficiency promotion is more outstanding, provides an effective way for realizing the design of high -efficient energy -conserving centrifugal ventilator.

The invention relates to a light scattering type dust concentration sensor self-zero calibration device and method, and belongs to the field of dust sensors. The device comprises a light scattering detection unit and a shell, the light scattering detection unit is located in the shell and comprises a photoelectric sensor, a laser light source and an optical lens group, and the device is characterized by further comprising a micro fan and a replaceable filter screen; the photoelectric sensor is mounted on the left side in the shell to realize rapid detection of dust concentration; the micro fan is mounted on the right side in the shell, so that power consumption is reduced as much as possible; when on-site in-situ self-zeroing needs to be carried out, a replaceable filter screen is additionally arranged on the air inlet side of the micro fan, it is guaranteed that air blown to the photoelectric sensor after the micro fan is started is clean airflow, dust in the shell is all blown to the outside, meanwhile, it is guaranteed that external dust does not enter the shell, data of the photoelectric sensor is collected at the moment, and the self-zeroing effect is achieved. And the self-zero calibration of the light scattering type dust concentration sensor is realized. The precision of the dust concentration sensor can be improved.

The invention discloses a copper-silver-based welding wire for butt welding of a titanium-nickel composite board, the copper-silver-based welding wire comprises a flux core and a welding skin, and the flux core comprises the following components in percentage by mass: 20-25% of Cr powder, 20-25% of Mo powder, 10-20% of Co powder, 10-20% of V powder, 1-2% of Y2O3 + CeO2 powder and the balance of Cu powder. The welding wire is specially used for solving the problem of cracking caused by brittle phases during butt welding of titanium-nickel composite plates. The invention further discloses a preparation method of the copper-silver-based welding wire for butt welding of the titanium-nickel composite plate.

The silver-based welding wire comprises a flux core and a welding skin, and the flux core is composed of, by mass, 25%-30% of Co powder, 25%-30% of Cr powder, 25%-30% of Ni powder and the balance Ag powder. The welding wire is specially used for solving the problems that when a titanium-steel dissimilar joint is welded, stress is large, and cracking is caused by a Fe-Ti brittle phase. The invention further discloses a preparation method of the silver-based welding wire for welding the high-toughness titanium-steel dissimilar joint.

The present invention provides a method for quantitatively evaluating the development effect of natural water-driven oil reservoirs. The method firstly introduces two evaluation indicators, namely, the interlayer difference production coefficient and the energy utilization coefficient, for the factors affecting the development of natural water-driven oil reservoirs; then, a natural water-driven oil reservoir development effect evaluation index system is established based on the two evaluation indicators; finally, a multi-factor comprehensive evaluation of the development effect of the oil reservoir to be evaluated is performed according to the established system. The method provided by the present invention establishes a natural water-driven oil reservoir development effect evaluation index system for the first time, and realizes a multi-factor quantitative evaluation of the development effect of natural water-driven oil reservoirs. In addition, the method is easy to operate, has strong adaptability, and can reflect the development characteristics of natural water-driven oil reservoirs and their water-driven effects; at the same time, its evaluation results can point out the main factors that restrict the development effect of the oil reservoir, and provide a basis for targeted development adjustments in the next step.

The present application relates to the field of geological disaster monitoring and warning and geotechnical engineering informatization, and discloses a kind of satellite InSAR and ground displacement joint restraint's slope digital twinborn self-update and early warning method, solve the existing slope monitoring technology There are problems such as difficult multi-source data fusion, stability analysis cannot dynamically update parameters and sliding surface geometry, lack of digital twinborn model self-update capability and single early warning index.The present application fuses satellite InSAR surface deformation, ground GNSS point deformation, deep profile deformation data under unified space-time and coordinate datum, realizes the real-time self-update of model by constructing twinborn model augmented state containing geotechnical parameters and sliding surface geometric parameters, combined with hierarchical consistency constraint objective function, then fuses static stability index of limit equilibrium method and dynamic deformation index of proxy model, forms comprehensive hierarchical early warning system considering static stability and dynamic deformation characteristics of slope.

The disclosed highway tunnel thin-wall composite reinforcing structure comprises multiple groups of reinforcing pipe segments, the multiple groups of reinforcing pipe segments are sequentially spliced along the length direction of the tunnel, each group of reinforcing pipe segments comprises two reinforcing pipe segments, the two reinforcing pipe segments are connected at the top and arranged left and right staggered, the bottom of the reinforcing pipe segment is connected with the tunnel inner ground beam, and the reinforcing pipe segment is a concrete prefabricated structure; the reinforcing pipe segment comprises a thinning portion and a main body supporting portion connected on both sides of the thinning portion, the height of the thinning portion from the ground is 4-5 meters, the thickness of the thinning portion is less than that of the main body supporting portion, the normal compressive bearing capacity of the thinning portion and the main body supporting portion is the same, and a hole for hoisting, grouting or connection is arranged on each reinforcing pipe segment. The design method is used for designing the highway tunnel thin-wall composite reinforcing structure, the method is designed by using the equal pressure strength method, and the compressive resistance and bearing capacity of the tunnel can be improved while the useful passing space is improved.

The invention discloses a bracket sensor data processing method for optimizing a simulation effect of a fully mechanized coal mining face based on a spline interpolation method, which comprises the following steps of: performing multi-step processing and optimization on original data of a bracket sensor, eliminating wrong data and abnormal values, making up for data missing, and improving the simulation effect of the fully mechanized coal mining face. The processed sensor data can more truly reflect the actual attitude of the working face bracket, so that high-quality basic data is provided for simulation, and the accuracy and reliability of fully mechanized coal mining face simulation are improved; the reasonable range of sensor values is set according to the working face mining data, and the original data is adjusted according to the reasonable range, so that the goodness of fit between the data processing process and the actual mining condition is ensured, and the field applicability of simulation is improved.

This utility model discloses a plate-type industrial pipeline filter, including a disassembly filter mechanism and a filter screen plate installed inside the disassembly filter mechanism. The top of the disassembly filter mechanism is provided with an ejection cleaning mechanism, and the top of the ejection cleaning mechanism is provided with an ejection sleeve. The disassembly filter mechanism includes a filter chamber, and the filter chamber has symmetrically opened installation grooves inside. A drain valve is threaded to one side of the filter chamber. An installation guide rail is slidably connected inside the installation groove. The filter screen plate is fixedly installed inside the installation guide rail. A sealing strip is fixedly installed at the bottom of the filter screen plate. Installation brackets are symmetrically installed on both sides of the bottom of the filter chamber. The filter chamber has an inlet and outlet chamber design, which can increase the filtration area as needed without changing the pipe diameter. The drain valve design allows for quick sewage discharge and cleaning during use. The "triangular" structure of the filter chamber can be installed in two positions, improving on-site applicability.