21results about How to "The calculation process is clear" patented technology

The invention relates to the technical field of civil engineering, and particularly discloses a tunnel early-high-strength rock anchoring and shotcreting synergistic effect bearing arch active support design method which comprises the following steps: determining a rock anchor bearing arch acting load and establishing a rock anchor bearing arch calculation model; calculating to obtain the most unfavorable section displacement and stress of the rock anchor bearing arch; verifying whether the displacement of the rock anchor bearing arch meets the requirement; a safety evaluation method of the pre-stressed anchor rods is provided, and the safety of the pre-stressed anchor rods is evaluated according to a rock anchor bearing arch calculation result; establishing a sprayed concrete calculation model; calculating to obtain the most unfavorable section displacement and stress of the sprayed concrete; a sprayed concrete safety and durability evaluation method is provided; active support parameters are determined according to the calculation result of the rock anchor bearing arch and the calculation result of the sprayed concrete. By means of the method, the safety and durability of rock-anchor-shotcrete active supporting under different supporting parameters can be simply, rapidly and accurately calculated, reference is provided for tunnel engineering design adopting active supporting, and good engineering value is achieved.

The invention discloses a GUM evaluation method for temperature measurement uncertainty of a ground-based Rayleigh laser radar, and the method comprises the steps: determining the source of measurement uncertainty after determining a temperature measurement model of the ground-based Rayleigh laser radar and main parameters of detection equipment; the measurement uncertainty sources comprise detection point photon noise, upper boundary point photon noise, background noise, detection point dead zone time, upper boundary point dead zone time and inversion reference temperature, respectively calculating the measurement uncertainty and sensitivity coefficient introduced by the uncertainty sources, and obtaining the measurement uncertainty component of each uncertainty source; and finally synthesizing the temperature standard measurement uncertainty. The complete temperature measurement uncertainty evaluation method provided by the invention can accurately and efficiently evaluate the temperature measurement uncertainty of the ground-based Rayleigh laser radar during high-altitude detection.

The invention relates to the technical field of civil engineering, and particularly discloses a railway tunnel high-performance active support system design method considering a space-time effect, which comprises the following steps: S1, establishing a tunnel early-strength and high-strength sprayed concrete layer calculation model; s2, determining calculation parameters required by the sprayed layer calculation model according to the tunnel early-high-strength sprayed concrete layer calculation model; s3, influence factors of surrounding rock deformation pressure borne by the tunnel early-strength and high-strength sprayed concrete layer are determined; s4, establishing a surrounding rock deformation pressure calculation method of the tunnel early-strength and high-strength sprayed concrete layer considering the surrounding rock level; and S5, establishing a surrounding rock deformation pressure calculation method of the tunnel early-strength and high-strength sprayed concrete layer considering the rock mass quality index. By adopting the railway tunnel high-performance active support system design method considering the space-time effect, the safety of the tunnel early-strength and high-strength sprayed concrete layer under different time, geological conditions, construction levels and support design parameters can be simply, quickly and accurately calculated.

The invention relates to the field of blast furnace cooling, and provides a blast furnace cooling schedule calculation and evaluation method in order to facilitate calculation and evaluation of a cooling schedule. Constructing a slag crust thermal load relational expression and a cooling index calculation formula; selecting a slag crust thickness control range and substituting the slag crust thickness control range into a slag crust thermal load relational expression to calculate and obtain a blast furnace target area cooling wall thermal load control range; substituting the thermal load control range of the cooling wall into a cooling index calculation formula to calculate and obtain a cooling degree control index parameter range of the cooling wall in the target area; and calculating an actual cooling degree control index, and if the actual cooling degree control index exceeds the cooling degree control index parameter range, adjusting the cooling water flow and / or the water inlet and outlet temperature difference of the cooling water until the actual cooling degree control index is within the cooling degree control index parameter range. The mode is simple and easy to operate, high in practicability and high in efficiency.

The invention relates to the field of intelligent guidance control of aircrafts, and discloses a guidance method and system based on time constraint in the atmosphere of a physical information neural network, and the method specifically comprises the steps: constructing missile flight states and residual flight time data sets under different missile initial states on the basis of a proportional guidance law; then, a time constraint offset item is constructed by using the remaining flight time calculated by the physical information neural network, a time constraint guidance law is designed, and finally, based on the trained physical information neural network model and the time constraint guidance law, the aircraft is guided to strike the target at the expected time. According to the method, guidance control is realized by adopting a method of combining proportional guidance and a physical information neural network, and the method has very important engineering significance in considering the influence of air resistance and gravity and realizing constraint on missile attack time.

The application discloses a kind of based on fissure expansion's rock slope excavation unloading failure path analysis method, belong to slope stability analysis technical field, including the following steps: S1, fissure equivalent simulation;S2, stress intensity factor calculation and expansion type judgment;S3, fissure cracking judgment;S4, fissure expansion calculation;S5, fissure expansion section generation.The fissure expansion's rock slope excavation unloading failure path analysis method in the application, by the originally complex fissure expansion environment is divided into multiple sub fissure dynamic expansion model, then single sub fissure expansion model is analyzed one by one, then the fissure expansion situation of single sub fissure expansion model is combined with other sub fissure expansion model and is analyzed, such as step by step calculation, obtain the fissure expansion situation of rock slope under overall complex environment, overall calculation logic is clear, avoid complex redundant calculation, improve fissure expansion situation analysis efficiency.

The invention relates to the technical field of civil engineering, and particularly discloses a tunnel rock anchor bearing arch numerical calculation method considering mechanical parameter changes of surrounding rock, which comprises the following steps: establishing a tunnel rock anchor bearing arch numerical calculation model to carry out numerical calculation in the ith step; traversing all units in the model; extracting a corresponding stress component and a centroid coordinate of each unit and then calculating a radial stress of each unit; calculating a mechanical parameter update value of each unit; judging whether each unit participates in numerical calculation of the ith step or not; if so, endowing the unit with updated mechanical parameters, otherwise, keeping the mechanical parameters unchanged; judging whether the i-step numerical calculation of the numerical model is converged or not; if convergence occurs, the calculation process is ended, and otherwise, numerical calculation of the (i + 1) th step is carried out. According to the method, in the numerical calculation process of the tunnel rock anchor bearing arch, the change of surrounding rock mechanical parameters along with the change of surrounding rock stress is considered, reference is provided for the design of tunnel engineering supported by anchor rods, and the method has good engineering value.

The application discloses a kind of double box girder flow field dynamics modal and flow stability analysis method and system, belong to bridge engineering field.This method first establishes double box girder flow field model by computational fluid dynamics, solves the momentum equation and continuity equation of two-dimensional incompressible flow;Dynamic modal decomposition is carried out again, and eigenvalue, characteristic mode and other information are obtained;Finally, based on linear stability theory, the flow field component is expressed as the sum of steady-state solution and disturbance term, and the global linear flow stability equation is obtained by substituting into the equation, and the flow stability is analyzed by discrete.This method can accurately extract the modal characteristics of each order, providing a scientific basis for wind-induced vibration analysis of double box girder, and has important application value.The method of the application occupies less computing resources, has high numerical accuracy, and can be further expanded to higher precision calculation model according to computing resources, and is suitable for application in actual bridge engineering.

The invention discloses a multi-modal large model training method, and relates to the technical field of artificial intelligence, and the method comprises the steps: data collection, preprocessing, feature extraction, multi-modal fusion, and model training. During preprocessing, for temperature, humidity and pressure parameters, abnormal value analysis is carried out by calculating an average value and a standard deviation, and a model is obtained; calculating an intermediate value by using front and back normal values to replace an abnormal value; for coordinate position information, calculating a direction angle according to adjacent coordinates, comparing the direction angle with a threshold value to judge abnormity, and replacing abnormal coordinates with middle coordinates of front and back normal coordinates; a feature extraction link: calculating a temperature change rate mean value of adjacent nodes as a feature coefficient according to the temperature; calculating the mean value of the humidity and the absolute value of the mean value difference; the pressure adopts a maximum and minimum parameter difference value; calculating a speed mean value of adjacent nodes according to coordinates; calculating a fusion feature vector according to a preset weight during multi-modal fusion; according to the method, multi-modal data can be effectively processed, and the model performance and accuracy are improved.

The invention belongs to the field of motors, and discloses a method, system or device for calculating the copper loss of motor windings, comprising the following steps: converting any stator slot type of the motor into rectangular slots of equal area; redistributing the windings so that, except for the stator slots of the top layer, the number of windings placed in the stator slots of the remaining layers is equal, and the remaining windings are placed in the stator slots of the top layer; obtaining the active power of each layer of stator slots after the windings are redistributed; substituting skin effect factors and proximity effect factors into the active power to form an analytical model for the copper loss of the stator slot windings of each layer, superimposing the analytical models of the copper loss of the stator slot windings of each layer to obtain a total loss model of the motor windings, thereby obtaining the copper loss of the entire motor windings; without the need for precise modeling, quickly and accurately predicting the winding copper loss, thereby improving the accuracy of predicting motor efficiency.

The invention discloses a GUM evaluation method for wind speed measurement uncertainty of a ground-based Rayleigh laser radar, and the method comprises the steps: determining a measurement uncertainty source after a wind speed measurement model and main parameters of the ground-based Rayleigh laser radar are determined; the uncertainty sources comprise detection channel photon noise, reference channel photon noise, detection channel background noise, reference channel background noise, detection channel dead zone time, reference channel dead zone time and reference wavelength, and respectively calculating the measurement uncertainty and sensitivity coefficient introduced by the uncertainty sources; and obtaining the measurement uncertainty component of each uncertainty source, and finally synthesizing the wind speed standard measurement uncertainty. The complete wind speed measurement uncertainty evaluation method provided by the invention can accurately and efficiently evaluate the wind speed measurement uncertainty of the ground-based Rayleigh laser radar during high-altitude detection.

The application provides a tunnel composite stratum excavation induced frictional inclined pile bearing capacity loss calculation method, comprising obtaining tunnel parameters of a shield tunnel, structure parameters of an existing pile foundation and physical and mechanical parameters of a soil body; equivalent conversion of elastic modulus of a multilayer composite soil body into homogeneous single stratum elastic modulus, analysis of a soil body plastic zone and elastic zone range and boundary radius induced by tunnel excavation, establishment of a soil body arbitrary position radial stress and hoop stress distribution model; discrete treatment of an inclined pile along a pile length, discrimination of a stress region according to distances of pile body points to a tunnel center and calculation of corresponding soil body principal stresses, solving of pile soil contact surface normal stress changes through a pile shaft and stress principal direction angle conversion; calculation of pile body point side friction resistance changes according to normal stress changes, integral obtaining of total bearing capacity losses along the pile length and calculation of frictional pile foundation bearing capacity loss factors. The calculation method has high operability, simple calculation and wide application prospects.

The invention belongs to the technical field of gas drive recovery rate calibration, and particularly relates to a chart establishing method, system, equipment and medium for calibrating the gas drive recovery rate, and the chart establishing method comprises the steps that firstly, based on gas consumption rate definition and in combination with an accumulated injection-production ratio and a water-gas content, a calculation expression of the gas consumption rate, the accumulated injection-production ratio and the water-gas content is determined; establishing a chart expression of the gas consumption rate, the cumulative injection-production ratio and the recovery degree according to a calculation expression of the gas consumption rate, the cumulative injection-production ratio and the water-gas content and a gas-injection development oil reservoir simulated water-gas content gas drive chart expression; and finally, establishing a gas drive recovery rate calibration chart expression of the gas consumption index and the recovery degree according to the chart expressions of the gas consumption rate, the cumulative injection-production ratio and the recovery degree. According to the method, a specific calculation formula and a prediction plate are provided, the gas drive recovery ratio can be rapidly calibrated through existing data, and the recovery ratio prediction plate provided by the invention does not depend on the water-gas content and does not need to predict the recovery ratio in different gas drive stages.

The present disclosure provides a calculation method based on the maximum height of catalyst diffusion when the optimal number concentration of ice nuclei in the cloud, comprising establishing a diffusion calculation coordinate system; constructing a wind field model describing the distribution of horizontal wind speed and vertical airflow with height, deriving the lifting trajectory of the center line of the smoke plume with the downwind distance; establishing a concentration distribution analytical model describing the three-dimensional space of the catalyst in the coordinate system; simplifying the concentration distribution analytical model, and solving to obtain the predicted height based on the concentration dilution criterion; based on the vertical airflow velocity distribution model in the wind field model and the preset vertical airflow decay threshold, the critical height based on the limit of dynamic lifting ability is solved; taking the minimum value of the predicted height and the critical height as the maximum height of the catalyst diffusion, the method can comprehensively consider the vertical airflow lifting effect, and the calculation is simple and fast, solving the problems of large prediction deviation caused by ignoring the vertical airflow in the existing model and poor practicability caused by complex calculation.

The present application relates to the technical field of composite materials, and discloses a fabric composite material stiffness matrix calculation method, device, equipment and medium. The method comprises the following steps: obtaining a standard sample of a fabric composite material; determining the in-plane weaving angle alpha and the out-of-plane fluctuation angle beta of the fabric based on the standard sample; obtaining the corresponding basic mechanical parameters of the fabric composite material and the fabric layup parameters of a target component; and constructing a cross-scale numerical calculation model based on the in-plane weaving angle alpha, the out-of-plane fluctuation angle beta, the basic mechanical parameters and the fabric layup parameters, and calculating the complete stiffness matrix of the fabric composite material. The present application is suitable for various single glass fiber or carbon fiber reinforced fabric composite materials, can adjust the structure characteristic measurement points and model parameters according to different fabric types, and has good universality and expandability.

The application discloses a kind of deep energy storage comprehensive evaluation methods based on variable weight multi-factor fusion, first carry out the hierarchical cyclic loading and unloading test of simulated deep energy storage working condition, four kinds of core evaluation parameters such as surrounding rock stability, sealing, energy storage efficiency, environmental safety are synchronously collected;Second, the single cycle evaluation quantity and cumulative evaluation quantity of each dimension are calculated;Further introduce variable weight theory, determine the basic weight by analytic hierarchy process, construct state adjustment function to realize weight dynamic adjustment, and calculate the deep energy storage comprehensive evaluation index;Finally, according to the value of comprehensive index, the whole cycle operation stage is divided, and the corresponding hierarchical early warning and operation and maintenance strategy is matched.The application solves the problem that the existing deep energy storage evaluation dimension is single, the weight is fixed and the engineering guidance is insufficient, and the evaluation result is consistent with the cycle degradation law of energy storage system, which can provide quantitative decision basis for the safe operation and risk control of various deep energy storage projects such as compressed air energy storage, hydrogen energy storage and pumped storage.

The utility model provides a negative pressure suction bottle, and belongs to the technical field of medical equipment. Comprising a negative pressure bottle, an air delivery pipe is fixedly installed at the top end of the negative pressure bottle, a collecting bottle is arranged at the top end of the air delivery pipe, an air suction nozzle is fixedly installed in the collecting bottle, a waterproof breathable membrane is arranged at an outlet part of the top end of the air suction nozzle, the air suction nozzle is conical, and the bottom end of the air suction nozzle is fixedly connected with the air delivery pipe. An insertion pipe is fixedly mounted on one side of the top end of the collection bottle. By arranging the collecting bottle, the air suction nozzle and the inflow pipe, negative pressure can be formed in the collecting bottle, gastric juice in a baby can be automatically collected, the gastric juice is prevented from entering the negative pressure bottle and adhering to the inner wall of the negative pressure bottle, and gastric juice collection is more perfect; the amount of the collected gastric juice can be conveniently, directly and clearly calculated, so that the working quality of the equipment is more perfect, and the working quality of the equipment is greatly improved.

The application belongs to the field of dryland agricultural water-saving technology, and provides a dryland agricultural water-saving equivalent calculation method, which comprises the following steps WP ave S1, calculating the average water productivity of a research area under the condition of the same type of soil and traditional management Y a S2, obtaining the actual crop yield of the research area after the target water-saving technology is used ET a S3, calculating the theoretical evapotranspiration of the crop yield according to the average water productivity and the actual crop yield WP ave S4, calculating the dryland agricultural water-saving equivalent after the water-saving technology is used by subtracting the actual crop evapotranspiration from the theoretical evapotranspiration and performing unit conversion Y a Y a ET Theo ET Theo ET ET a W sav The dryland agricultural water-saving equivalent calculation method provided by the application breaks the technical deficiency that the dryland rain-fed agriculture cannot calculate the physical water-saving amount for the first time, so that the water-saving technology can be converted into an intuitive and physical water-saving equivalent. The application fills the long-term blank of lacking direct water amount index in the field.​​​​​

The application discloses a Monte Carlo-based fuzzy data expansion reliability evaluation method and belongs to the technical field of reliability analysis.The method comprises the following steps: constructing an event failure probability model;establishing an event cumulative distribution function;generating potential event failure trigger time samples of the event through a Monte Carlo random sampling mode based on the event cumulative distribution function, so as to realize simulation of event failure time uncertainty;putting the randomly generated trigger time samples into the corresponding event cumulative distribution function, judging whether the event fails according to a probability hit rule, and thus obtaining failure results of each event in the simulation samples;adopting an earliest trigger principle to determine a primary failure event of the system and system failure time according to the sequence of the event failure time;modeling and analyzing the system failure process according to the distribution characteristics of the system failure time in the simulation process, so as to depict the law of system failure evolution with time;and performing reliability statistical analysis.

The invention discloses a concrete carbon emission calculation and optimization system and method based on a multi-dimensional carbon emission factor database, and relates to the technical field of building material carbon emission calculation and management. Working condition data in the whole concrete production and transportation process are obtained, the carbon emission per unit volume of the concrete is calculated according to a preset calculation process, a result is output, main carbon emission driving factors are identified according to the calculation result, and on the premise that set production constraint conditions are met, the carbon emission driving efficiency is improved. Different parameter combination schemes are generated according to main emission driving factors, and carbon emission corresponding to each scheme is recalculated to obtain an executable scheme with an emission reduction effect, so that a concrete carbon emission management closed loop of data acquisition, emission calculation, contribution degree analysis, parameter recombination and result feedback is constructed. Accurate calculation, dynamic updating and effective management of carbon emission results under different concrete production working conditions are realized.

The application discloses a river network hydrodynamic process simulation method based on branch point water quantity conservation, and specifically comprises the following steps: collecting basic data of each river section and each branch point of a river network; establishing a topological relationship between the branch point and adjacent river sections; discretizing one-dimensional Saint-Venant equations by using a finite volume method, and carrying out grid division on the river network; determining a time step and limiting by using a Runge-Kutta method; calculating an interface flux, and solving water surface slope source terms and friction source terms of each grid unit of an independent river section; calculating water quantity and water level at the branch point based on a water quantity conservation equation according to flux values of adjacent river sections of the branch point; updating the river network calculation grid, and outputting simulation results after simulation time reaches a set total time. The method can simulate complex river network hydrodynamic processes, can accurately simulate complex water flow movement processes of complex river sections, and has a simple and efficient branch point calculation method without iterative calculation.