60results about How to "The method steps are simple" patented technology

The invention discloses a runoff prediction method based on a bidirectional long-short-term memory recurrent neural network, and belongs to the technical field of runoff prediction. The method comprises the following steps: preprocessing original data to obtain a data set, and dividing the data set into a training set and a verification set; constructing a runoff prediction network model, wherein the runoff prediction network model comprises a forward LSTM module, a reverse LSTM module, an Adam optimizer, a Dropout regularization layer and a Dense full connection layer which are connected in sequence; setting a hyper-parameter and a loss function, and training the constructed model by adopting the training set to obtain a trained runoff prediction model; and inputting verification set data into the trained runoff prediction model to obtain predicted runoff. According to the method, the association between the past and future runoff time series data can be mined, the problem of poor feature extraction and memory effect of early learning part data caused by unidirectional learning is effectively avoided, and the prediction precision is improved while better applicability is achieved.

The invention discloses a method and a system for predicting the axial pressure stable bearing capacity of a trussed column by considering the influence of initial stress and creep, belongs to the technical field of trussed mixed structures, and solves the problem of low precision of predicting the axial pressure stable bearing capacity of the trussed column due to the fact that the influence of initial stress and creep is not considered. The method comprises the steps of determining basic parameters, considering the influence of shear deformation of the trussed column on initial stress, considering the influence of shear deformation of the trussed column on creep, calculating a stability coefficient, calculating the stable bearing capacity of the trussed column and the like. According to the model, an equilibrium differential equation is established based on the mechanics principle, mathematical calculation and derivation are carried out by applying the stability theory, and the influence of shear deformation, initial stress and creep on the axial pressure stable bearing capacity of the truss type column is comprehensively considered, so that the stable bearing capacity prediction method of the truss type column is provided. The method is suitable for predicting the axial pressure stable bearing capacity influenced by the initial stress and creep of the trussed column.

The invention discloses a GNSS (Global Navigation Satellite System) and wind cloud satellite assisted meteorological and hydrological coupled runoff forecasting method. The method comprises the following steps: 1, GNSS two-dimensional water vapor inversion; 2, performing water vapor inversion on the Fengyun No.4; 3, performing three-dimensional variation assimilation on the precipitable water volume inverted by the GNSS and the precipitable water volume inverted by the FY-4 star A based on a WRF meteorological mode; and 4, runoff forecasting is carried out based on the WRF-Hydro hydrological model. The method is simple in step and reasonable in design, three-dimensional variational assimilation is performed on the precipitable water volume inversed by the GNSS and the precipitable water volume inversed by the FY-4 star A based on the WRF meteorological mode, accurate meteorological driving data is provided for a WRF-Hydro hydrological model, the dependence of WRF meteorological mode data assimilation on conventional meteorological observation data in traditional meteorological and hydrological coupling forecast is avoided, and the method is suitable for popularization and application. And the applicability of the WRF and WRF-Hydro model coupling mode in the meso-and small-scale watershed in the conventional data scarcity region is further improved.

The invention discloses a method for covalently modifying magnetic nanoparticles by metal ion-induced DNA (Deoxyribose Nucleic Acid) and application of the magnetic nanoparticles in quantitative detection of ochratoxin A, and belongs to the technical field of fluorescent biosensing analysis. The method for covalently modifying the magnetic nanoparticles by metal ion-induced DNA provided by the invention comprises the following steps: adsorbing DNA molecules on the surfaces of polydopamine-coated magnetic nanoparticles under the induction of metal ions, and carrying out covalent linkage to obtain the DNA molecule-modified magnetic nanoparticles. In the method provided by the invention, the electrostatic repulsion between the DNA molecules and the surface of the polydopamine is overcome through the induction effect of the metal ions, and the modification amount of the DNA molecules on the surfaces of the magnetic nanoparticles is greatly increased. The method is simple in steps, and the obtained DNA molecule modified magnetic nanoparticles have very high sequence selectivity and capture capability on uncombined OTA aptamers, and are beneficial to improving the sensitivity and accuracy of OTA detection.

The invention discloses a biphase titanium-based high-entropy hydrogen storage alloy with low-temperature efficient hydrogen storage performance, a preparation method of the biphase titanium-based high-entropy hydrogen storage alloy and application of the biphase titanium-based high-entropy hydrogen storage alloy in hydrogen absorption and desorption. The chemical expression of the biphase titanium-based high-entropy hydrogen storage alloy with the low-temperature efficient hydrogen storage performance is TiaZrbCrcMndNieVfFeg, a, b, c, d, e, f and g all represent atomic ratios, a, b, c, d and e are respectively and independently 0.95 to 1.05, f is 0.77 to 0.85, g is 0.18 to 0.20, and the sum of f and g is 0.95 to 1.05. The preparation method comprises the following steps: (1) mixing Ti, Zr, Cr, Mn, Ni and ferrovanadium alloy raw materials according to a chemical expression; and (2) smelting the raw materials mixed in the step (1), and cooling and solidifying after smelting to obtain the biphase titanium-based high-entropy hydrogen storage alloy with low-temperature efficient hydrogen storage performance.

The application discloses an airborne equipment weighing device, which comprises an article support, a ball, a ball support, a pressure sensor, a pressure sensor display instrument, a pressure sensor support and a support base, the article support is supported on the ball, the ball is inlaid on the ball support, one end of the ball supports the article support, the other end of the ball is pressed on the pressure sensor, one end of the pressure sensor supports the ball, the other end of the pressure sensor is connected with the pressure sensor display instrument through a wire, the pressure sensor is installed on the pressure sensor support through screw threads, and the pressure sensor support is arranged on the support base. The application has the advantages of simple operation, small error, clear principle, convenient production, high practicability, easy popularization and application and great value.

This invention discloses a method for measuring building tilt based on total station DR mode, comprising the following steps: 1. Establishing a distance measurement error compensation model using distance measurement experiments of characteristic points on the building; 2. Establishing a high-precision three-dimensional control network based on the site conditions of the building; 3. Selecting characteristic points for building tilt measurement and estimating the height of these characteristic points above the ground; 4. Estimating the station location based on the height of these characteristic points above the ground, and precisely adjusting the station location using observations from the total station DR mode; 5. Analyzing and compensating for the distance observations based on the DR mode distance measurement error compensation model; 6. Calculating the coordinates of the characteristic points for building tilt measurement and obtaining the building tilt amount. This invention, based on total station DR mode distance measurement error correction and the establishment of a high-precision three-dimensional control network, offers high accuracy and reliability, allowing tilt measurement work to be carried out without contact with the building, making it suitable for use in sudden, extremely dangerous site environments.

The application discloses a method for quickly determining seismic wave travel time, which comprises the following steps: step one, reading in relevant parameter files and a velocity model; and step two, using a computer to judge all grid points to obtain seismic wave travel time of all grid points. The method has simple steps and reasonable design, and the seismic wave travel time is obtained by multiplying the distance from a grid point to a seismic source point and a seismic wave travel time disturbance, so that the problem of large seismic source error in the calculation of seismic wave travel time by the original fast marching method is solved.

The present invention relates to the technical field of offshore oilfield exploitation, and specifically to a method for characterizing the degree of displacement between wells under non-uniform well spacing in offshore oilfields. The method comprises the following steps: applying the DTW algorithm, analyzing the distance between the time series of changes in injected water and the time series of changes in liquid production in the injection and production wells, and calculating the degree of connectivity between the injection and production wells; establishing a typical well group geological model according to the degree of connectivity between the wells, and obtaining the flow field distribution through streamline simulation calculation; calculating the streamline density and streamline intensity between the injection and production wells; calculating the coefficient of characterization of the degree of displacement between wells; and determining the optimal injection and production volume of a single well. The method of the present invention solves the problem that it is difficult to characterize the degree of displacement between injection and production wells in different well groups at sea under the influence of multiple factors, provides a basis for balanced displacement of offshore oilfields, and can greatly improve the recovery rate of offshore oilfields.

The invention discloses a building three-dimensional damage detection method, which comprises the following steps of: 1, carrying out image acquisition on a target building by using an unmanned aerial vehicle carried with a visible light imager to obtain a plurality of building images covering the whole target building, and generating a building DSM (Digital Subscriber Model); 2, acquiring a top elevation image of the target building; 3, detecting the elevation change of the target building; 4, detecting the top damage of the target building; 5, detecting side damage of the target building; and 6, visualizing the damage of the target building. The method is simple in steps and reasonable in design, the unmanned aerial vehicle is used for shooting the images of the target building at multiple angles, detection of elevation change, top damage and side damage of the target building is achieved, and overall visualization of damage of the target building is achieved.

The invention provides a hydrofluoric acid-free photovoltaic silicon wafer pickling additive, a pickling solution and application thereof, the additive comprises the following components in percentage by mass: 7-10% of fluoride inorganic salt, 0.1-1.0% of a chelating agent, 0.005-0.01% of a surfactant, 0.1-0.5% of an accelerator and the balance of water, and the fluoride inorganic salt is one or more of potassium hydrogen fluoride, ammonium hydrogen fluoride and ammonium fluoride. By adopting the additive provided by the invention, the silicon wafer can be completely dehydrated after being cleaned without hydrofluoric acid in the pickling process, and the production line efficiency and the yield are not influenced.

The invention discloses an unmanned aerial vehicle base station resource allocation method for a communication perception integrated system. The method comprises the following steps: 1, constructing the communication perception integrated system; 2, acquiring the communication rate of the ISAC base station on the unmanned aerial vehicle to the communication user n and the mutual information of the ISAC base station on the unmanned aerial vehicle to the sensing user m at the t moment; 3, according to the communication rate and the mutual information, obtaining the spectrum efficiency of the communication-sensing integrated system; 4, obtaining a reward score function of ISAC base station resource allocation on the unmanned aerial vehicle; and 5, obtaining a power distribution strategy of the ISAC base station on the unmanned aerial vehicle to the N communication users and the M sensing users. The method is simple in step, the DDPG algorithm and the greedy algorithm are adopted, resource allocation is carried out on the basis of the reward score function formed by the spectrum efficiency, the communication fairness index and the perception fairness index, the system fairness is improved to the maximum extent, and the overall communication and perception performance of the system is improved.

The application discloses a multimedia publicity page promotion method and system, and technical scheme points are as follows: a multimedia publicity page promotion method comprises the following steps: S1, performing promotion analysis: including analyzing publicity purposes and audience groups, determining a network public activity theme, and selecting a network promotion tool; S2, generating and manufacturing publicity pages: according to a result of the promotion analysis, drawing an electronic file and a text page of the publicity pages; S3, publishing the publicity on the network; S4, integrating information after acquisition; S5, feeding back the publicity pages; S6, opening a video conference: uploading an opinion book to the video conference to discuss and acquire a publicity scheme; and S7, secondary publicity. The multimedia publicity page promotion method and system have good publicity page promotion capability, can realize accurate marketing, have the capability of integrating promotion feedback, and the method steps are simple and easy to implement.

The present invention belongs to the field of oil and gas exploration and development, and specifically relates to a method for identifying seismic attributes of medium-low energy mud diapir development range. The method comprises the following steps: filtering and structural smoothing of original seismic data; extraction and optimization of relevant seismic attribute three-dimensional bodies; QC evaluation of the preferred attribute body reflecting diapir; RGB fusion of the preferred data body after parameter optimization; and judgment and elimination of faults. The method of the present invention can more accurately identify the development range of mud diapir, overcome the problem that mud diapir with weaker active energy is not sufficiently distinguishable from surrounding strata, geophysical characteristics are not obvious, and its development range is difficult to accurately identify, which is of great significance for optimizing the planning and design of new wells, improving the success rate of drilling, and increasing the discovery rate of oil and gas.

An experimental device and method for simulating the spontaneous combustion and extinguishing process of coal in a closed fire area, wherein the experimental device includes a coal body simulation system, a fire monitoring system, a fire extinguishing simulation system and a sewage treatment system, wherein the fire monitoring system includes a chromatograph, a nitrogen source, an oxygen source, and a plurality of thermocouples and a plurality of gas intakes embedded in the coal body and distributed at different positions; the fire extinguishing simulation system includes a fire extinguishing agent source, which is used to provide a gaseous fire extinguishing agent and pass it into the coal body from the bottom of the experimental box, or to provide a solid fire extinguishing agent or a liquid fire extinguishing agent and pass it into the coal body from the top of the experimental box; the sewage treatment system includes a gas sewage treatment subsystem and a liquid sewage treatment subsystem to treat the gas overflowing from the coal body, and to treat the liquid flowing out of the coal body. The present invention is easy to use and operate, can simulate the entire process of spontaneous combustion and extinguishing of coal, and can truly reflect the inhibitory effect of different fire extinguishing materials on different coal bodies.

The utility model discloses a rice seedling raising greenhouse with a temperature control system, which comprises a greenhouse, one end of the greenhouse is provided with a window assembly and an electric cabinet, the window assembly comprises an outer frame arranged on the greenhouse, the inner side of the outer frame is provided with a positioning plate, the top end of the positioning plate is provided with a driving motor, and the driving motor is connected with the electric cabinet. A driving gear is fixed to the output end of the top end of the driving motor in a transmission mode, a rotating rod is fixed to the middle of the outer frame, a rotating table is fixed to the middle of the rotating rod, a rack is fixed to the front end of the rotating table, and a sliding assembly is arranged at the other end of the rotating table and comprises a sliding block and a connector arranged at one end of the sliding block. When the device is used, one end of the window and one end of the fixed frame can deflect towards the interior of the outer frame, the other end of the window and one end of the fixed frame can deflect towards the outer side, compared with an existing structure (the spacing line is the middle of the rotating rod), the device has a novel opening mode, and the attractiveness of the window is improved on the premise that the method and the steps are kept simple.

The invention discloses a method for improving the digestion resistance of rice based on an endogenous protein distribution regulation and control technology. Comprising the following steps: A, soaking rice and water according to a certain proportion; b, draining the unhulled rice obtained in the step A, and cooking; c, freezing the unhulled rice obtained in the step B at low temperature; d, drying the rice obtained in the step C at high temperature; and E, unshelling, milling, grinding and sieving the unhulled rice obtained in the step D, and measuring the contents of the fast digestible starch, the slow digestible starch and the resistant starch in the rice. According to the invention, the content of slowly digestible starch and resistant starch in the rice is effectively increased by a simple, effective, low-cost, convenient and feasible method, and the effect of reducing the content of rapidly digestible starch in the rice is achieved by regulating the distribution of endogenous proteins in the rice through the generation and sublimation of ice crystals in a low-temperature freezing and high-temperature drying combined process for the first time; the digestion resistance of the rice is greatly improved.

The invention discloses a preparation method of a starch-based porous material with high oil and water absorption characteristics, which comprises the following steps: preparing a surface modification reagent, mixing the reagent with starch, heating at low temperature, continuously stirring for gelatinization, terminating the reaction, and repeatedly centrifuging and washing; adding water into the surface modified starch, resuspending, repeatedly breaking walls to remove surface shells, centrifuging, washing with alcohol, drying and collecting; mixing the collected starch with a mixed enzyme solution for enzymolysis; after continuous oscillation reaction, adjusting the pH value to be acidic to inactivate the enzyme, then adjusting to be neutral, centrifuging, discarding supernate, washing with water, centrifuging, drying, sieving, collecting and storing to obtain porous starch; adding a certain proportion of oil and water into the starch, oscillating, mixing, centrifuging and measuring the adsorption capacity; the adsorption capacity of the starch is effectively improved by a low-consumption, low-cost, simple and feasible method, and the stripping particle surface shell structure is provided for the first time to improve the mixed enzymolysis mode, so that the oil-water adsorption capacity of the porous material is greatly improved.

The invention provides a cobalt nano interconnection line and a preparation method thereof, and belongs to the field of integrated circuits. According to the method, the Au layer is deposited on one side of the bi-pass PC film through magnetron sputtering, the Cu layer is electrically deposited on the Au layer, the cobalt nano interconnection line is electrically deposited in a pore channel of the bi-pass PC film, the Au layer is stripped from the bi-pass PC film, the bi-pass PC film is dissolved, centrifugal separation is conducted, and the cobalt nano interconnection line is obtained. According to the method, the magnetron sputtering technology and the electro-deposition technology are combined, controllable growth of the cobalt nano interconnection line can be achieved, and the method has high compatibility with an existing chip interconnection technology; by controlling electro-deposition process parameters, the texture and the length-diameter ratio of the cobalt nano interconnection line can be regulated and controlled. The method has the advantages that the steps are simple, the industrial production is easy to realize, the production cost is reduced, and the prepared cobalt nano interconnection wire has wide application potential in the fields of chip interconnection and the like.

The invention discloses a rock slag feature recognition method based on multi-sensor fusion. The method comprises the steps that 1, an industrial camera and a laser radar synchronously collect rock slag images and point cloud data; 2, an improved YOLO11n-seg network is constructed; 3, performing feature extraction on the rock slag image through an improved YOLO11n-seg network; 4, constructing total loss; 5, training the improved YOLO11n-seg network on the basis of the total loss; 6, segmenting a subsequent rock slag image to be processed to obtain a rock slag area segmentation map; 7, projecting the original point cloud data to obtain the point cloud of each rock slag area; and obtaining the rock slag volume based on the point cloud of each rock slag area. The method is simple in step, instance segmentation of the rock slag target area is achieved through the improved YOLO11n-seg network, the contour shape and the volume of the rock slag are obtained, and therefore a basis is provided for parameter optimization of follow-up TBM tunneling.

The invention discloses a preparation method of a coal rock polished section, which comprises the following steps: before mixing a coal sample which is crushed to a qualified particle size with an adhesive, carrying out pre-wetting treatment on the coal sample by using water or a dextrin solution, stirring to fully wet coal particles, carrying out suction filtration, drying in the shade, mixing the coal particles with the adhesive, putting the mixture into a mold, drying under a room temperature condition, and carrying out sintering to obtain the coal rock polished section. And grinding and polishing to prepare the coal rock polished section. Compared with a national standard method, the polished section prepared after the coal particles are pretreated through the pre-wetting method is more stable in quality, potholes are not formed in the polished surface, flatness is better, surface roughness is smaller, maceral boundaries are clearer, the method is high in operability, and coal rock properties cannot be affected. Water or a dextrin solution is used for pretreatment so as to eliminate air films on the surfaces of the coal particles, enhance the wettability of the surfaces of the coal particles and fundamentally avoid bubbles and pits in the polished section.

The invention discloses a ruthenium-platinum sub-nano alloy catalyst as well as a preparation method and application thereof, and belongs to the technical field of catalysts. The ruthenium-platinum sub-nano alloy catalyst provided by the invention comprises ruthenium-platinum alloy, the particle size of the ruthenium-platinum sub-nano alloy catalyst is less than or equal to 10nm. Based on the discovery that ruthenium shows higher alkaline hydrogen evolution activity than platinum under alkaline conditions, ruthenium and platinum are matched to construct the ruthenium-platinum alloy catalyst, respective advantages of ruthenium and platinum can be combined, the loading amount of platinum is reduced, the catalytic activity of alkaline hydrogen evolution reaction and alkaline hydrogen oxidation reaction is remarkably improved, and the catalytic activity of the catalyst is improved. Moreover, the sub-nanometer size provides sufficient active sites for the reaction, and the catalyst has a good application prospect in hydrogen evolution of alkaline electrolytic water or preparation of alkaline hydrogen-oxygen fuel cells.

The present disclosure relates to a method for adsorptive separation of normal alkanes in C10-C25 distillate oil, comprising the following steps: S1, first contacting C10-C25 distillate oil with an adsorbent to obtain a desorption material containing C10-C25 normal alkanes and the adsorbent, and a raffinate containing C10-C25 isomeric alkanes, C10-C25 naphthenes, C10-C25 aromatics and a desorbent; S2, second contacting the desorbent with the desorption material to obtain an extract containing C10-C25 normal alkanes and the desorbent; the C10-C25 distillate oil comprises C10-C25 normal alkanes, C10-C25 isomeric alkanes, C10-C25 naphthenes and C10-C25 aromatics; the desorbent comprises C5-C8 normal alkanes, C6-C8 aromatics and optional C5-C8 isomeric alkanes; the particle size of the adsorbent is 0.3-0.6 mm, the adsorbent comprises 5A molecular sieve, and the crystal grain size of the 5A molecular sieve is 0.2-0.8 μm; the method can significantly improve the yield of normal alkanes above C14 and reduce the content of aromatics in normal alkanes.

The invention relates to a titanium silicalite molecular sieve, a preparation method thereof and a method for preparing epoxypropane, and the method comprises the following steps: S1, mixing titanium silicalite molecular sieve raw powder, a first main binder, water, an optional first binder and an optional first surfactant, and carrying out first molding to obtain titanium silicalite molecular sieve microspheres; s2, mixing the titanium silicalite molecular sieve microspheres, a second binder, water and an optional second surfactant, and carrying out secondary molding to obtain a titanium silicalite molecular sieve precursor; s3, performing steam aging on the titanium silicalite molecular sieve precursor to obtain a titanium silicalite molecular sieve pre-product; and S4, carrying out roasting treatment on the titanium silicalite molecular sieve pre-product. The titanium silicalite molecular sieve prepared by the method disclosed by the invention has a porous structure and high mechanical strength, is used for propylene epoxidation reaction, and can obtain relatively high raw material conversion rate and target product selectivity.

The invention provides a vanadium electrolytic liquid crystal and a cyclic preparation method thereof. The cyclic preparation method of the vanadium electrolytic liquid crystal comprises the following steps: dissolving VO2 with H2SO4 to obtain a VOSO4 solution; using the VOSO4 solution as a positive electrode and a negative electrode to perform electrolysis; heating the positive electrode solution to precipitate vanadium, filtering to obtain red vanadium and filtrate A; adding sulfuric acid to the negative electrode solution, cooling and crystallizing, filtering to obtain V2(SO4)3*nH2O crystals and filtrate B; mixing red vanadium, V2(SO4)3*nH2O crystals and concentrated sulfuric acid, solidifying and forming, and obtaining a vanadium electrolytic liquid crystal; mixing the filtrate A and the filtrate B, adding V2O5 and V2O3 to adjust the valence of vanadium in the solution, adding VO2 and H2SO4 to adjust the total vanadium and sulfate concentrations, obtaining a VOSO4 solution, and the VOSO4 solution is returned to step 2 for circulation. The method of the invention has simple steps, low cost, and no pollution, and can realize the industrialized continuous production of vanadium electrolytic liquid crystals.

The utility model provides a unit technology water supply anti-condensation device which is simple in structure, easy in method implementation, convenient to operate and strong in applicability, and comprises a draft tube, a technology water supply and water taking header pipe, a cooling unit and a technology water supply and water drainage header pipe, and the technology water supply and water taking header pipe takes water from the draft tube to obtain hot water passing through a cooling unit user. The system further comprises a unit technical water supply anti-condensation system and an in-plant air temperature sensor, and the unit technical water supply anti-condensation system takes water from the technical water supply and drainage main pipe; the anti-condensation effect is achieved by monitoring the temperature of the pipeline in the anti-condensation system and regulating and controlling the temperature difference between the temperature of the pipeline and the temperature of air in a plant.

The utility model provides a public water supply anti-condensation device which is simple in structure, easy in method implementation, convenient to operate and high in applicability, and comprises a draft tube, a public water supply and water taking header pipe, a cooling unit and a technical water supply and water drainage header pipe, and the public water supply and water taking header pipe takes water from the draft tube to obtain hot water passing through cooling unit users. The system further comprises a public water supply anti-condensation system and an in-plant air temperature sensor, and the public water supply anti-condensation system takes water from the technical water supply and drainage main pipe; the anti-condensation effect is achieved by monitoring the temperature of the pipeline in the anti-condensation system and regulating and controlling the temperature difference between the temperature of the pipeline and the temperature of air in a plant.

The present application relates to the field of paper-based energy storage, and discloses a water evaporation induced V-shaped paper-based generator and a preparation method thereof, wherein the present application utilizes UV light curing ink to be treated by ultraviolet irradiation to make the hydrophilic paper surface be hydrophobic modified, the paper in the hydrophilic area can drive fluid flow under the capillary action and natural evaporation, and the surface fluid flow of the hydrophilic material can generate a mechanism of flow potential. The method has simple steps, the whole light curing process is controllable, the efficiency is extremely high, and the method can be used for preparing a simple and portable water evaporation induced paper-based generator. The V-shaped structure of the paper-based generator prepared by the present application can realize effective transmission of fluid and effective connection of the circuit, and the paper-based generator can be used for preparing an arrayed water evaporation induced paper-based generator.

The invention discloses a bridge abutment retaining wall disease detection method. The method comprises the following steps: 1, constructing a bridge abutment retaining wall disease image database; 2, constructing a bridge abutment retaining wall disease detection model; 3, training a bridge abutment retaining wall disease detection model; 4, testing the abutment retaining wall disease detection model; 5, setting an anchor frame for frame selection of the abutment retaining wall disease type; 6, acquiring an actual bridge abutment retaining wall disease image by using the bridge abutment retaining wall disease inspection trolley; 7, inputting an actually acquired image into the abutment retaining wall disease detection model, and outputting a classification prediction result with boundary coordinates, sizes and category probabilities; and 8, judging whether the abutment retaining wall disease corresponding to the classification prediction result needs to be repaired or not. According to the invention, the C2fDCNv3 module variable convolution and the PBM parallel multi-scale module are introduced, and the sampling point position of the convolution kernel can be dynamically adjusted according to the shape and the position of the input feature, so that the accuracy and the speed of bridge abutment retaining wall disease detection are improved.

The invention belongs to the technical field of polyvinyl alcohol thermoplastic processing, and discloses a thermoplastic polyvinyl alcohol composition and a preparation method thereof, the composition contains polyvinyl alcohol and a compound plasticizer, and the content of the compound plasticizer is 28-67 parts by weight based on 100 parts by weight of polyvinyl alcohol; the compound plasticizer contains glycerol, lignin, ionic liquid and water, and the content of the lignin is 10-40 parts by weight, the content of the ionic liquid is 5-20 parts by weight and the content of the water is 10-20 parts by weight on the basis that the content of the glycerol is 100 parts by weight. The composition can reduce the melting point of the polyvinyl alcohol, improve the processing fluidity of the polyvinyl alcohol, improve the stability of a plasticizing system, inhibit migration and precipitation of micromolecules such as glycerol in the polyvinyl alcohol, and avoid the bubble defect caused by violent dissipation of water molecules in the polyvinyl alcohol in the processing process.