9 results about "Snowmelt" patented technology

This invention relates to a snowmelt flood prediction method and system based on a physical information neural network, specifically in the field of snowmelt flood prediction. By embedding physical constraints such as shallow water equations and energy conservation equations into the neural network model, the accuracy and stability of prediction are improved while maintaining physical consistency. It can effectively compensate for the shortcomings of traditional empirical models in terms of spatiotemporal continuity and generalization under extreme scenarios. At the application level, this invention can realize the fully automated operation of the entire process from meteorological data input, snowmelt and runoff calculation, flood evolution prediction to risk level assessment. The system can output multi-time step water depth, flow velocity and inundation range results based on real-time or forecast meteorological conditions, and combine them with population density, land use and infrastructure distribution data to generate flood risk zoning maps and early warning information, providing a scientific basis for watershed flood control scheduling, engineering design and disaster emergency management.

This invention relates to the field of data evaluation technology, and discloses a multi-source mapping data fusion evaluation method and system for agricultural insurance. The method includes: acquiring images of a target planting area before and after the snowmelt period; extracting the reflectance difference of the snow spectrum of each plot unit in the images under shaded and unshaded conditions to obtain the change in snow cover rate of the plot unit per unit time; identifying accelerated ablation blocks in the target planting area based on the change in snow cover rate; and constructing a snowmelt runoff catchment tree based on the topological connection between the water runoff direction of the slope where the accelerated ablation block is located and the downstream plots; based on the snowmelt runoff catchment tree, this invention can solve the problems of existing technologies having ambiguity in determining the range of runoff scour caused by snowmelt, lacking a nighttime temperature correction mechanism for runoff freezing, and having large deviations between simulated snowmelt flow and actual conditions.

This invention relates to a composite landscape system for tree pits along urban roads based on gradient triggering and resource recycling. It includes a sidewalk paved with interlocking pavers and ecologically recycled tree pit units spaced at intervals along the sidewalk near the roadway. Prefabricated functional drainage grid modules are installed in the gaps between the pavers. Adjacent functional drainage grid modules are combined to form a complete grid drainage system. Drainage channels within each catchment area converge into a main drainage pipe and are introduced into a storage tank via a sedimentation tank and filtration layer. A water source heat pump unit is installed in the equipment well. This invention constructs an intelligent model of "passive-triggered anti-icing—active dual-heat-source synergistic snow melting—ecological recycling of rainwater and snowmelt," achieving the goal of ensuring safe passage on sidewalks throughout winter while rapidly, efficiently, and energy-savingly melting snow and ice and collecting meltwater under conditions of initial snowfall, continuous snowfall, and extreme low temperatures.

This invention discloses an intelligent water transfer and regulation method for flood resource utilization in inland river basins in arid regions. The method includes: collecting basic watershed data; constructing a flood forecasting model integrating multiple runoff generation mechanisms (rainfall, snowmelt, and glacial meltwater) for forecasting; determining flood types based on the forecast results, according to the proportion of water source contribution and meteorological and hydrological characteristics; estimating flood sediment concentration levels based on flood types and forecast results; and finally, formulating matching resource utilization decision rules based on flood types and sediment concentration levels to achieve intelligent water transfer and regulation. This invention achieves accurate simulation, type identification, and classified policy implementation for floods with complex sources in arid regions, improving the efficiency of flood resource utilization and the security of watershed water resource allocation.

1. The name of the design product: snow-melting agent spreading bag. 2. The use of the design product: for snow-melting agent packaging and spreading. 3. The design points of the design product: a plurality of spreading holes are arranged on the inner layer of the bottom of the spreading bag. 4. The picture or photo best indicating the design points: perspective view. 5. The design product is a planar product, and the left view, the right view, the top view and the bottom view are omitted. 6. The white paper in the design picture is the inner content and the background, which does not belong to the content of the design to be protected. 7. The part marked A is transparent material.

The application designs a towing type snow-melting agent spreading device, belongs to the technical field of road snow removal equipment, and aims to solve the problems of low artificial spreading efficiency, high labor intensity, difficulty in meeting large-area snow removal demand, unstable conveying of existing equipment and the like in northern winter road snow cleaning. The device adopts a towing type vehicle body, a snow-melting agent storage box body, a spiral conveying mechanism, a pair of roller crushing mechanisms, a belt conveying mechanism and a spreading mechanism are sequentially arranged on the vehicle body. The bottom of the storage box body is provided with an inclined flow guide structure to facilitate smooth falling of the material; the spiral conveying mechanism uniformly feeds the material; the pair of roller crushing mechanisms are synchronously and reversely rotated through gear meshing to crush the caked snow-melting agent; the belt conveying mechanism continuously conveys the material; the spreading mechanism adopts a multi-roller circumferential design, the spreading rollers are driven to rotate through bevel gear transmission, and are uniformly thrown and spread by centrifugal force. The device has compact structure and stable transmission, can avoid accumulation and material breakage, improve the spreading efficiency, and is suitable for long-time and high-intensity road snow removal operation.

The application relates to the technical field of cryosphere science, and provides a near-surface icing risk dynamic evaluation method for complex mountainous areas, which comprises the following steps: introducing a radiation terrain factor, a snow albedo suppression mechanism and a wind cooling correction for a gridded meteorological and surface temperature input field, and constructing an energy index; obtaining a humidity index by comprehensively considering precipitation, snowmelt, humidity and humidity degree and other elements; and introducing a persistence background index of an annual / seasonal scale as a background enhancement factor, so as to comprehensively consider the energy index, the humidity index, the background enhancement factor and an icing phase indicator, and obtain a corresponding icing risk score. In this way, a systematic process framework from data preprocessing, physical mechanism diagnosis, hydrological process constraint to risk comprehensive evaluation can be provided, so that the near-surface icing risk of the complex mountainous area can be efficiently and accurately evaluated.

This application discloses a method and apparatus for simulating snow runoff based on a SWAT model and remote sensing inversion, relating to the field of refined watershed runoff management technology. The method includes: performing cloud removal operations on optical remote sensing data of the target area to obtain cloud-free imagery; determining various satellite remote sensing parameters based on the cloud-free imagery using optical remote sensing and remote sensing inversion techniques; downloading various climate data for the target area based on ERA5 data; and simulating snow runoff in the target area using a SWAT model based on soil survey data, various satellite remote sensing parameters, and various climate data. This application's snow runoff simulation based on soil survey data, various satellite remote sensing parameters, and various climate data can improve the accuracy of snow runoff simulation in information-scarce areas.

The application discloses a snowmelt runoff estimation method and system at a basin scale, an electronic device and a storage medium, and relates to the technical field of snowmelt runoff estimation. The method comprises the following steps: collecting reanalysis meteorological data, remote sensing snow monitoring data and digital elevation model data in a target basin range, and preprocessing to generate a basin-scale surface average data sequence; dividing the target basin range into a plurality of calculation units; determining a critical temperature threshold of the entire basin based on the response relationship between the basin average snow cover rate and the basin average air temperature; identifying the overall snowmelt period of the basin based on the comparison between the basin average air temperature and the critical temperature threshold, combined with the change of the basin average snow cover rate; performing the improved degree-day factor method on each calculation unit in parallel to calculate the snowmelt rate; and performing confluence calculation on the runoff formed by the snowmelt rate of each calculation unit to output the snowmelt runoff of the outlet section of the basin. The application realizes dynamic and accurate estimation of the snowmelt runoff of the basin, and significantly improves the simulation accuracy and practicality.