91 results about "Cumulative effects" patented technology

The invention relates to the technical field of port ecological construction, and particularly discloses a port ecological construction evaluation method and system, and the method comprises the following steps: collecting dynamic ecological environment data in port construction operation through a multi-source sensor array; performing space-time coupling analysis on the data, calculating a dynamic attenuation rate # imgabs0 # of each dimension environment index by adopting a self-adaptive sliding time window algorithm, adjusting an ecological response time constant theta in combination with hydrodynamic conditions of a sea area around a port, performing synchronous integral calculation on a historical cumulative effect # imgabs1 #, and generating an environment health degree evolution curved surface; constructing a comprehensive evaluation model; and predicting an environmental risk value based on the hybrid prediction model. According to the invention, an intelligent, automatic, safe, reliable, green and low-carbon evaluation solution is provided for ecological construction of the port, and the ecological protection and sustainable development level of the port is remarkably improved.

A method and device for evaluating ecological cumulative effects of surface mining areas are provided. The method includes: constructing a surface mining areas eco-environmental evaluation index (SMAEEI) suitable for semi-arid grasslands; constructing a first eco-environmental quality condition adjustment coefficient R(Si,j,th) based on the actual land cover classification result and the SMAEEI; obtaining the actual ecosystem service value ESV per unit area of the area to be evaluated in several years through the unit area ecosystem service value coefficient VCif of the area to be evaluated and the first eco-environmental quality condition adjustment coefficient R(Si,j,th); based on the time-series trajectory integral value of the actual ecosystem service value ESV per unit area and the ideal ecosystem service value ESV′ per unit area undisturbed by human beings, performing residual analysis to obtain the ecosystem service value accumulation induced by anthropogenic factors (ESVA-AF).

The invention relates to the technical field of offshore wind power, and discloses a bearing performance degradation evaluation method for an offshore wind power foundation structure, which effectively solves the problem of neglecting corrosion heterogeneity in the prior art by acquiring initial three-dimensional geometric point cloud data and historical service data and constructing a first finite element model. The model better fits the actual structure state; the local damage evolution and cumulative effect are simulated by means of a second finite element model, meanwhile, material degradation evaluation is combined, the interaction of three key factors including corrosion thinning, local damage and material mechanical property degradation is comprehensively considered, and the defect that the multi-factor coupling influence is not fully solved in the prior art is overcome; the extreme environment load condition is introduced to construct the third finite element model, the performance degradation law of the structure in the extreme environment can be analyzed, and then the reliability and applicability of evaluation are improved by establishing a mathematical relation model and predicting the full life cycle bearing performance.

The invention provides a spartina alterniflora ecological environment damage value assessment method, medium and system, and belongs to the technical field of spartina alterniflora ecological environment damage assessment. A time-space damage analysis model based on a graph convolutional network is utilized to process a complex factor interaction relationship, a time weight factor correction model is established to quantify the dynamic change of a cumulative effect, and a biological inhibition factor effect model is combined to analyze the synergistic effect of multiple inhibition mechanisms such as local reed competition, natural enemy insect control, salt stress and the like. Accurate damage quantification and prevention and control strategy formulation are realized through the regional ecological environment damage value comprehensive evaluation model and the inhibition factor optimal configuration model, and the technical problem that the accuracy of ecological damage value evaluation is insufficient due to the fact that a multi-ecological factor interaction mechanism in the spartina alterniflora invasion process cannot be effectively analyzed in the prior art is solved.

The invention discloses a highway tunnel supporting structure Newtonian mechanics deformation intelligent early warning platform, and relates to the technical field of supporting early warning, the highway tunnel supporting structure Newtonian mechanics deformation intelligent early warning platform comprises a deformation prediction module, the deformation prediction module is used for carrying out early warning and stability evaluation on a supporting structure; the deformation prediction module comprises a coupling modeling unit, a load response unit and an evaluation early warning unit. By designing the deformation prediction module, bidirectional coupling of rock mass pore water pressure and solid deformation is realized, the problem of misjudgment caused by neglecting underground water seepage softening surrounding rock and dynamic load cumulative effect in traditional early warning is solved, and prediction precision and active prevention and control capability of tunnel stability are improved.

The invention discloses a driving mechanism analysis method of reservoir group scheduling for flood non-consistent evolution, which comprises the following steps: acquiring a smooth reservoir entering flood sequence by utilizing a topologically coupled physical manifold constraint denoising model, and constructing dynamic topological characteristics representing propagation time lag and sensitivity through a hydraulic propagation mechanism-based Figure ordinary differential equation; constructing a structural causal model comprising a scheduling capability index, ectogenic hydrological driving and topological characteristics, and fitting a nonlinear dependency relationship by using a causal generalized additive model; executing anti-fact inference, and calculating a local causal driving index and a global causal cumulative effect index through a dry budget; and generating an optimal scheduling strategy for suppressing variation based on the causal index. According to the method, systematic analysis from data physical restoration to causal mechanism decoupling can be realized, the driving contribution of a scheduling behavior to flood inconsistency is accurately quantified, and decision support is provided for scientific flood control of a drainage basin.

The invention discloses a landslide susceptibility assessment method and device considering a factor change trend, and the method comprises the steps: carrying out the cutting processing of time sequence landslide impact factor data in a to-be-assessed target region based on the range of the to-be-assessed target region, obtaining a time sequence landslide influence factor set with consistent range size and corresponding spatial position; quantifying each factor in the factor set into a trend landslide influence factor; performing dimension removal processing on each trend landslide influence factor in the trend landslide influence factor set; performing multi-collinearity test on the trend landslide influence factor set after the dimension removal processing; and inputting the trend landslide influence factor set after the multi-collinearity test into a pre-established landslide susceptibility evaluation model to obtain a landslide susceptibility evaluation result of the to-be-evaluated target area. According to the method, the temporal and spatial variation trend and the cumulative effect of the landslide influence factor can be fully reflected through the quantified trend landslide influence factor, and the precision of landslide susceptibility evaluation is improved.

The invention discloses a meteorological-based geological disaster risk early warning method, a server and a storage medium, and the method comprises the steps: constructing a two-factor dynamic evaluation framework, scientifically quantifying a disaster-bearing body vulnerability index reflecting a geological background and a disaster-causing inoculation factor reflecting a recent rainfall accumulation effect, and carrying out the inverse coupling of the disaster-bearing body vulnerability index and the disaster-causing inoculation factor, and generating a current rainfall disaster threshold dynamically adjusted in real time for each grid unit. By implementing the method and the device, the problem of insufficient early warning accuracy caused by the fact that traditional early warning cannot adapt to geological environment time-space difference is effectively solved, and accurate, dynamic and differentiated evaluation and early warning of geological disaster risks are realized.

The invention discloses a multi-disaster chain type marine disaster risk assessment method based on regional disaster-bearing body distribution, relates to the technical field of marine disaster prevention and control, and aims to clarify the range of a research region, extract all disaster-bearing bodies in the research region, analyze the interaction relationship of the disaster-bearing bodies and establish an association probability matrix. By integrating a disaster chain theory, a probability statistical model and GIS spatial analysis, systematic identification and quantification of multi-disaster chain type marine disaster risks are realized, a logical relationship among a native event, a secondary event and a derivative event is defined, a disaster chain type structure chart is constructed, the total probability of a disaster-bearing body is calculated through a probability iterative algorithm, and the risk of the multi-disaster chain type marine disaster risk is identified and quantified. According to the method, direct and indirect conduction risks are comprehensively reflected, individual risk values are calculated in combination with disaster-bearing body vulnerability, and disaster chain overall risk values are generated through superposition, so that the limitation of isolated analysis of a single disaster in a traditional method is avoided, and complex interaction and cumulative effects of a disaster chain can be more comprehensively captured.

The invention relates to a medium and long term provincial domain load time sequence scene generation method and system considering accumulated temperature effect under the drive of meteorological data, and belongs to the technical field of power system engineering. In a weather sensitive season, the weather sensitive season is divided into a basic load part and a weather sensitive load part by adopting a load decomposition theory, peak values of the basic load and the weather sensitive load are estimated by utilizing a multivariable gray system model, and the proportion of the weather sensitive load is estimated by combining an air temperature cumulative effect correction model and a CNN-BiLSTM-Attention model of weather data; the load of the weather sensitive season is obtained; meanwhile, a non-meteorological sensitive seasonal load is generated. And finally, combining the meteorological sensitive load with the non-meteorological sensitive load to obtain a provincial load scene. According to the seasonal discussion load scene generation method, the relevance between the load and the economic population index and the meteorological data is improved, and the generated scene has high credibility.

The invention relates to the technical field of geotechnical engineering safety monitoring and evaluation, in particular to a soft rock slope stability dynamic evaluation method which comprises the following steps: S1, acquiring slope environment parameters, construction parameters and geological basic parameters; s2, through simulation of the whole rainfall infiltration process, the spatio-temporal evolution characteristics of pore water pressure in a slope rock stratum are quantified, the aging relation between soil shear strength degradation caused by rainwater and slope displacement is analyzed, and a slope instability threshold calculation model is established; and S3, analyzing the monitored deformation and displacement cumulative effect of the slope and the migration characteristics of the rock stratum slip plane under the load action of the construction vehicle, and constructing a rock stratum instability risk assessment model based on the construction parameters. By comprehensively considering the influence of environmental parameters, construction parameters and geological basic parameters on the slope stability, dynamic evaluation and graded early warning of the slope stability are realized, a construction scheme can be pre-evaluated, and a construction reference is provided for safety management and control of a soft rock slope project.

The invention relates to the technical field of risk assessment, and discloses an atmospheric environment risk assessment method for a harbor dangerous cargo container yard, which considers a real-time meteorological data set and obtains pollutant concentration by using a diffusion model, and on the basis, not only considers correction factors of meteorological conditions and performs primary optimization on the pollutant concentration, but also improves the risk assessment efficiency of the harbor dangerous cargo container yard. The dry sedimentation rate and the wet sedimentation rate are also considered, and secondary optimization is carried out on the primary optimization pollutant concentration to obtain the maximum pollutant concentration. Firstly, through the use of a dynamic meteorological data set, the influence of short-term meteorological changes on pollutant diffusion can be captured, it is ensured that a prediction result better conforms to the actual situation, and especially under the accident situation, a static model cannot capture the changes. Secondly, the dry sedimentation process and the wet sedimentation process are comprehensively considered, so that the model can more accurately simulate the behavior that pollutants settle to the ground from the atmosphere, especially the cumulative effect of particulate matter and gaseous pollutants and the potential influence on soil and water.

The invention discloses a foundation pit safety evaluation method based on a deep horizontal displacement deformation area of a support structure, and compared with a traditional single-point displacement control method, the method adopts a parameter of a continuous deformation area, early warning can be performed through deformation area cumulative effect analysis when single-point displacement does not exceed a limit, and the safety of a foundation pit is ensured. Compared with a traditional method, the method has the advantages that the response time is advanced by 30%-50%, a key window period is reserved for engineering reinforcement, the limitation of traditional single-point control is broken through, the overall instability trend of the foundation pit is accurately recognized, and the engineering risk of local standard reaching and overall out-of-control is avoided. Meanwhile, dynamic correction and weight distribution measurement of a design threshold value and an alarm value are provided in combination with conditions such as a construction stage and geological conditions, the sensitivity of key areas (such as pit bottoms and support weak positions) can be enhanced, and the evaluation reliability in a complex scene is improved.

The invention belongs to the technical field of environmental monitoring and ecological risk assessment, and particularly relates to a Yangtze River Delta basin water ecological risk prediction method and system based on a Bayesian network model. The method comprises the following steps: firstly, constructing a water ecology risk assessment system, and preprocessing sample data; sub-basins are divided based on DEM data, and the sub-basins which are adjacent in space and similar in data feature are aggregated into non-overlapping data blocks; constructing a dynamic Bayesian network model by adopting a random variational inference method, and inputting meteorological prediction data to obtain probability distribution of risk levels of each sub-basin; constructing a risk space correlation model according to sub-basin division, and simulating conduction and superposition processes of risks in a basin network; and finally, evaluating the comprehensive risk state of each sub-basin in combination with a network topology index. By constructing the dynamic Bayesian network model and the risk space correlation network, the spatial-temporal dynamic assessment of the watershed water ecological risk is realized, and the propagation path and the cumulative effect of the risk in the watershed can be predicted.

The invention discloses a water ecosystem safety assessment method for cascade reservoir development, and relates to the technical field of water ecology and environment assessment. Comprising the following steps: constructing a water ecosystem safety assessment multi-dimensional index system under cascade reservoir development; acquiring data of the cascade reservoirs and performing standardization processing; determining the initial weight of each index, and dynamically adjusting the weight of each index; calculating a static safety index; calculating a dynamic toughness index; calculating a comprehensive safety index according to the static safety index and the dynamic toughness index; and according to the size of the comprehensive index, determining the safety level of the water ecosystem in cascade reservoir development, establishing an early warning mechanism, and identifying the key influence index. According to the method, ecosystem toughness quantification is incorporated into an evaluation system, the cumulative effect and dynamic change of the cascade reservoir can be reflected, comprehensive and dynamic evaluation of the health condition of the watershed water ecosystem under the influence of the cascade reservoir is realized, and a scientific basis is provided for watershed ecological protection and reservoir ecological scheduling.

The invention belongs to the technical field of oil and gas field development, and particularly relates to a coupling simulation method for inter-well interference and fracture network evolution in the multi-well-group time sequence fracturing process. The method comprises the following steps: firstly, constructing a high-precision three-dimensional geomechanical model through multi-source data fusion, and solving a reservoir initial crustal stress field based on a finite element method; then time sequence fracturing multi-physics field coupling simulation is carried out according to the actual construction sequence, and a crustal stress field is updated and calculated in real time based on a finite element method; the updated stress field serves as an initial condition of subsequent sub-well simulation, and cross-time-sequence accurate representation of stress interference is achieved; and finally, numerical simulation of all fractured wells is completed through a whole well group iterative simulation process, and fracture network characteristic parameters and a stress interference cumulative effect are output. According to the method, full-process coupling analysis from geological modeling to full-well group fracturing simulation is innovatively realized, and a reliable technical means is provided for optimizing fracturing design.

The invention relates to the field of fire safety operation and maintenance management, and discloses a service life prediction method and system of a fire valve and a storage medium. The method comprises the following steps: collecting operation data of a fire valve, extracting degradation characteristics, and analyzing interaction between the degradation characteristics and environmental factors to construct a torque change rate model; non-linear characteristic parameters are determined based on the torque change index fusion environment influence; when the parameter exceeds a threshold value, evaluating the linkage influence to obtain an influence coefficient; adjusting the sealed rough simulation grid and determining a dynamic evolution path; integrating the operation frequency fluctuation to update the path connection strength so as to extract an attenuation trend, and determining a degradation threshold point; generating a compensation signal to optimize a torque change rate model to obtain a nonlinear rate correction value; and quantifying the cumulative effect based on the correction value and dividing the life interval of the fire valve. The problem that performance degradation of the fire valve under the complex working condition is difficult to accurately evaluate is solved, and the service life prediction accuracy and the maintenance decision scientificity are improved.

The invention belongs to the technical field of water environment monitoring and early warning, and discloses a lake and reservoir chlorophyll a concentration prediction method based on an SO-KNN model. According to the invention, multi-time scale meteorological cumulative effect features are introduced to enrich information representation, and an SO-KNN intelligent prediction model is constructed. According to the method, under the conditions of data scarcity and non-equilibrium, the chlorophyll a concentration, especially the high-precision and strong-generalization prediction capability of the water bloom risk critical point, is remarkably improved. The model is simple in structure and efficient in calculation, the common defects of overfitting, insufficient generalization ability and the like of a complex machine learning model in the scene are effectively overcome, and a reliable and practical innovative technical solution is provided for early water bloom warning of northern reservoirs and water areas with similar data conditions.

The invention discloses a reservoir bank slope hydrological-mechanical coupling dynamic stability evaluation method, which comprises the following steps: constructing a monitoring system, and acquiring water level, rainfall, pore pressure and moisture content data in real time; defining a cumulative disturbance effect function based on the water level amplitude, rate and frequency; establishing a nonlinear coupling correction relation between soil constitutive strength parameters of the cumulative effect function; in combination with monitoring and calculation results, iteratively identifying and correcting model coefficients; carrying out time-varying solution on the stability of the reservoir bank slope by utilizing the correction parameter field and a Bishop method; and establishing a criterion, and triggering graded early warning when the safety coefficient and the change rate exceed threshold values. Compared with the prior art, the method can achieve the real-time dynamic evaluation and grading early warning of the stability of the reservoir bank slope, and is higher in accuracy, adaptability and engineering application value.

The invention discloses a multi-class-group ecological safety operation space determination method and system for a large estuary delta and a storage medium. Relates to the technical field of ecological environment protection and wetland resource management. The method comprises the following steps: acquiring multi-source spatio-temporal data of a target estuary delta, preprocessing, constructing a multi-period inning boundary database, analyzing a distance effect, calculating an inning strength index, determining an optimal hysteresis period through hysteresis analysis, constructing three types of accumulation indexes, fitting a response relation curve of the three types of accumulation indexes and biodiversity, and determining the biodiversity of the target estuary delta. Identifying non-linear inflection points on the curve to determine a threshold position; and constructing a biodiversity response surface according to the analysis result, and further identifying the ecological operation space. According to the method, data of multi-stage remote sensing, multi-class biodiversity monitoring and the like and a multi-model joint calculation framework are combined, the lag response, the cumulative effect and the threshold features of the multi-class biocenosis are quantitatively recognized, an ecological safety operation space recognition system is formed, and support can be provided for ecological planning, management and decision making.

The present application relates to the field of laying hen breeding, and discloses a method and system for monitoring laying hen performance and breeding environment, the method comprising the following steps: obtaining the laying cycle information of each cage position, dividing the cage positions into different laying cycle groups; recording the laying performance data of each cage position; monitoring the cumulative effect of heat stress; constructing an individual dynamic baseline based on the laying performance history data of each cage position to obtain suspected abnormal cage positions; determining the abnormal cage positions and their types caused by environmental factors; generating a preventive control label according to the spread risk; and performing local control. Through dynamic grouping based on the laying cycle, differential monitoring is performed, the environmental threshold is set according to the age, the cumulative effect of heat stress is monitored, and finally the SIR model based on the time-varying transmission coefficient is used to predict the abnormal spread risk and generate differential control instructions, realizing early identification and advanced intervention of local abnormalities.

The application provides an optimal path acquisition method based on an ant colony algorithm, comprising: acquiring a map and placing the map into an ant colony model, setting the number of ants, the starting point and the end point of the map, and placing the ants at the starting point in the map to start multiple iterations of path searching until the ant colony model converges; screening the path of the ant with the highest evaluation score as the optimal path; the application adopts different rollback strategies to handle deadlock ants of self deadlock and passive deadlock, prevents the occurrence of the "generation break" phenomenon; evaluates the path by comprehensively considering the path length and the number of nodes, dynamically adjusts the concentration of pheromone update, and guides the ant colony to find a better path; the advantages and disadvantages of the path of the deadlock ant are rewarded and punished by pheromones, and the speed of ant colony optimization is accelerated; the adaptive reward measure is proposed, the path quality and the number of iterations are considered to autonomously judge whether to reward and adaptively adjust the reward coefficient, the ant colony is helped to find the global optimal path, and the influence caused by the cumulative effect of pheromones is solved.

The invention discloses an ecological groundwater drought risk dynamic simulation method, which comprises the following steps of: constructing a short-term driving force layer of a groundwater drought influence ecological effect, and fusing a hysteresis effect and a cumulative effect to obtain a calculation model of a short-term driving force coefficient; constructing a long-term driving force layer of the underground water drought influencing the ecological effect, and obtaining an optimal calculation model of a long-term driving force coefficient; performing weight fusion on the calculation model of the short-term driving force coefficient and the optimal calculation model of the long-term driving force coefficient, and calculating a comprehensive driving force coefficient to obtain a hierarchical memory-threshold response ecological groundwater drought risk model; and realizing dynamic process simulation of the ecological drought risk by using the hierarchical memory-threshold response ecological groundwater drought risk model. According to the method, three types of ecological response mechanisms of lagging, accumulation and leaving are integrated, and conversion of ecological drought risk assessment from a static index to dynamic process simulation is realized.

The present application relates to the technical field of bridge engineering structure health monitoring, in particular to a bridge targeted reinforcement scheme generation method and system based on digital twinning. The method comprises the following steps: identifying the inherent weak areas of the bridge structure to obtain the structural weak point features; extracting the dynamic features of the structural vibration signal through adaptive time-frequency analysis to obtain dynamic abnormal features; reconstructing the real-time stress field, combining the real-time stress field, the structural weak point features and the dynamic abnormal features to comprehensively evaluate the bridge health state; analyzing the cumulative influence of the environment history on the structure according to the environmental damage influence and the dynamic abnormal features; and generating a bridge targeted reinforcement scheme through multi-objective optimization and reinforcement learning based on the geometric deformation features, the bridge health state and the cumulative influence. The present application generates a targeted reinforcement scheme by fusing multiple source technologies, and is suitable for the whole life cycle health management and precise reinforcement decision of highway, railway and municipal bridges.

The present application belongs to the technical field of oil and gas field development, and particularly relates to a coupling simulation method for inter-well interference and fracture network evolution in multi-well group time sequence fracturing process. The method firstly constructs a high-precision three-dimensional geomechanical model through multi-source data fusion, and solves the initial stress field of the reservoir based on the finite element method; then, time sequence fracturing multi-physical field coupling simulation is carried out according to the actual construction sequence, and the stress field is calculated in real time based on the finite element method; the updated stress field is taken as the initial condition for subsequent well simulation, so as to realize accurate characterization of stress interference across time sequence; finally, through the whole well group iteration simulation process, the numerical simulation of all fracturing wells is completed, and the fracture network characteristic parameters and stress interference cumulative effect are output. The method innovatively realizes the whole-process coupling analysis from geologic modeling to whole-well group fracturing simulation, and provides a reliable technical means for optimizing fracturing design.

The invention relates to the technical field of nuclear power safety, in particular to a method for regular safety evaluation and cumulative effect modification of a nuclear power plant. A nuclear power plant regular safety evaluation and modification cumulative effect method comprises the following steps: obtaining implemented modification information, and establishing a nuclear power plant modification database; and establishing a function influence matrix, a determination theory safety analysis influence matrix, a probability theory safety analysis influence matrix, a disaster influence matrix, a radiation protection influence matrix, an external radiation environment influence matrix and an equipment identification influence matrix for each modification content in the nuclear power plant modification database. And obtaining a modified cumulative effect analysis evaluation result according to one or more types of analysis in the influence matrix. According to the method, the cumulative effects of all implemented modifications are systematically combed, the direct and indirect influence of the cumulative effects generated by all historical implemented modifications on the overall safety performance of the nuclear power plant is evaluated, and the reliability or effectiveness of the overall safety function of the nuclear power plant is maintained.

The application discloses a system and method for pile foundation quality detection, and relates to the technical field of pile foundation quality detection, and solves the problems of difficulty in determining the optimal excitation energy range, deviation of damage quantization criteria, and low reliability of detection results, wherein the application randomly distributes excitation pulses with different energies to different excitation areas, ensures that each energy is excited only once in one area and the same area is not continuously used, combines with environment monitoring and correction during resetting, effectively eliminates the cumulative effect of previous excitation and environmental interference, obtains pure damage increment data, identifies the inflection point of the damage increment-energy curve, takes the inflection point energy as the critical excitation energy of the depth, takes the minimum value and the maximum value of all depths to form an adaptive detection energy window, and fundamentally solves the technical problems of difficulty in determining the excitation energy range and contradiction between detection results of the same pile under different energies.

The invention provides an abrupt slope spillway overflow surface cavitation risk assessment method and system, and relates to the technical field of overflow surface cavitation risk assessment, and the method specifically comprises the steps: constructing a three-dimensional model, and carrying out the simulation to obtain the flow velocity, water pressure and cavitation number; calculating a Reynolds number, judging a flow state and determining a critical flow rate; the streamline curvature and vorticity are extracted, flow field separation is judged, and a risk correction coefficient is determined; clustering the initial high-risk grid units by adopting a recursive traversal method, and calculating a risk correction coefficient mean value of the region; and in combination with the cavitation number and the flow velocity, judging an initial risk level and assigning an interval, correcting to obtain a final risk level of each grid unit, and visually generating a cavitation risk point location distribution diagram of the high-risk area. According to the method, the divided high-risk region is clear in boundary and accurate in range, the actual distribution rule of the cavitation risk on the overflow surface is truly restored, the region cumulative effect of flow field separation is fused into a risk judgment system, and the cavitation effect that the risk of a continuous region is higher is met.

The present application relates to a method and device for monitoring and zoning water ecological functions in a watershed, the method comprising: obtaining digital elevation model data, land cover data, meteorological data, and soil data of a target watershed; dividing the target watershed into sub-watershed units based on the digital elevation model data, and obtaining a plurality of sub-watershed units and a water system network; determining the cumulative influence value of each sub-watershed unit based on the water system network; evaluating the water ecological function of the target watershed using a comprehensive evaluation model of ecosystem services and trade-offs, and obtaining water yield indicators, soil conservation indicators, and water quality purification indicators; obtaining a comprehensive water ecological function index for each sub-watershed unit based on the cumulative influence value, soil conservation indicators, water yield indicators, and water quality purification indicators; and zoning the target watershed for water ecological function monitoring based on the comprehensive water ecological function index, thereby improving the pertinence of watershed water ecological function monitoring.

The invention provides a power load prediction method, device and equipment based on a meteorological cumulative effect, and relates to the technical field of power load prediction. The method comprises the following steps: based on a meteorological cumulative effect extraction model, respectively carrying out meteorological feature extraction fusion on a meteorological sequence of a current day and meteorological sequences of a plurality of historical days to obtain meteorological cumulative effect characterization vectors of the current day and each historical day; wherein the meteorological sequence is a sequential sequence of multiple meteorological elements; calculating a similarity score between the current day and each historical day based on each meteorological cumulative effect representation vector and a trained similarity calculation model, and selecting a similar day from the plurality of historical days based on the similarity scores; and constructing a support set corresponding to the current day based on the meteorological cumulative effect representation vector of each similar day and the power load, and inputting the trained meta-learning prediction model to obtain a load prediction value of the prediction day. The method can improve the load prediction precision in a complex and changeable meteorological environment.