13 results about "Floodplain" patented technology

The invention relates to the technical field of flood disaster simulation, in particular to a watershed flood dynamic simulation system based on multi-source data fusion, which comprises a multi-source data preprocessing module, a multi-source data fusion module, a digital twin watershed modeling module, a flood dynamic simulation module, a flood risk assessment module and a visualization module. According to the scheme, a space-time cross-modal interaction fusion method is put forward to fuse multi-source data, a cross-modal interaction mechanism is introduced to capture dependency in a modal, high-dimensional interaction tensors are efficiently fused by means of low-rank decomposition, complementarity of space topology, time dynamic and multi-source heterogeneous data is considered, and multi-source data fusion efficiency is improved. The precision and robustness of hydrological process modeling are effectively improved; by constructing a distributed hydrological-hydrodynamic coupling model, whole-process dynamic simulation from runoff production to river channel-flood area flood routing is realized.

The invention discloses a calculation method of a compound section river channel beach and groove excess flow ratio considering vegetation influence. According to the method, the section of the riverway is divided into the vegetation area and the non-vegetation area based on measured data, the vegetation density, the stalk diameter, the underwater height and other characteristic parameters are obtained, and the roughness of the riverway under the vegetation condition is deduced by introducing the vegetation additional water blocking area. After a river section is divided into vegetation areas on the two sides and a non-vegetation area in the middle, the water passing area and the average water depth of each area under the typical water level are calculated respectively, then the excess flow of each subarea is calculated, and finally, the excess flow ratio of the flood plain to the main channel is expressed through the ratio of the excess flow of the vegetation areas to the excess flow of the non-vegetation areas. The method is simple and feasible, and can be used for river flood control and treatment.

The invention discloses a river water level inversion method taking altimeter footprint heterogeneity into consideration. The method comprises the following steps: acquiring an observation waveform of an SAR altimeter; space geometric parameters are calculated through footprint gridding and observation geometric modeling; constructing a water distribution scene based on the water mask and the river network, and classifying the water into a main river channel, a flood area and an adjacent isolated water body; electromagnetic scattering numerical integration is carried out based on the differentiated surface roughness parameters, and a simulated echo waveform is generated; waveform retracking and parameter inversion are realized through coarse grid search and local optimization solution; calculating an absolute water level and carrying out geophysical correction; performing multi-index quality control based on the interpretation rate of the analog waveform and the residual whitening degree; and finally outputting a water level product. According to the method, the defects of insufficient inversion precision and robustness of an existing method in a complex earth surface mixed scene are overcome, and the accuracy, reliability and physical interpretability of inland river water level monitoring are remarkably improved.

The invention provides a multi-temporal-spatial-scale river sediment tracing method, and relates to the field of geomorphology and river dynamics. According to the method, light release light (OLS) samples of terraces and floodplains and zircon sand samples of corresponding layers are collected on the sections of a source (branch) and a sink (main stream), and different age sequences are divided in combination with contemporary zircon sand samples of a tender beach; the contribution rate of a source to a sink is directly calculated by using a zircon age spectrum matrix, and a quality contribution rate algorithm is optimized in combination with a zircon mass percentage. According to the method, contemporary and historical multi-time-scale sediment traceability is realized, the traditional fitting simulation process is simplified, the calculation efficiency and accuracy are improved, and the method is suitable for sediment source analysis in areas poor in data.

The application discloses a kind of based on digital twinning's floodplain flood relief scheme generation method, device and equipment.The method comprises the following steps: determining the corresponding floodplain area in the basin based on digital twinning simulation model;Based on the water flow corresponding to the floodplain area of the floodplain area, the disaster risk level corresponding to the floodplain area is determined;Through digital twinning simulation model, the disaster relief scheme corresponding to the floodplain area is determined based on the disaster risk level corresponding to the floodplain area.The present application solves the technical problems that the floodplain disaster relief scheme cannot be quickly and accurately generated based on real-time conditions in the related art.

This application discloses a method, apparatus, storage medium, and processor for processing floodplain data. The method includes: monitoring river flow and determining the water level at various points along the riverbank in a watershed model based on the flow at the monitoring points. The watershed model is composed of elevation data within a target watershed, which includes at least a river and a riverbank. The method further includes determining floodplain points based on the water level and elevation of each point along the riverbank, resulting in at least one floodplain point. The method also includes determining floodplain links based on the water level and elevation of the surrounding terrain at each floodplain point, resulting in at least one floodplain link, where each floodplain link contains multiple points. Finally, the method involves simulating floodplain flow in the watershed model based on the at least one floodplain link. This application solves the problems of high computational load and demanding performance requirements for computing equipment in simulating floodplain conditions in related technologies.

The invention discloses a river basin sediment production estimation method based on a dynamic evolution process of a river-blocking barrier lake, and the method comprises the steps: carrying out the comparative analysis of key physicochemical characteristic parameters through an identification event layer in a residual barrier lake deposition sequence, and constructing a disaster chain extreme surface process river basin sediment production estimation method. Water level changes, hydrodynamic conditions and material source changes of the barrier lake are comprehensively analyzed, different sand production stages from the stable period, the decline period and the extinction period of the barrier lake are divided, the sediment change history from lacustrine facies suspended load to flood plain bed load is analyzed, and a complete barrier lake formation-evolution full life cycle evolution process mode is constructed. A layered triangular irregular network model is constructed to obtain layered accumulated sediment volume data, the layered volume and mass are calculated based on a dry density field of sedimentary stratification and spatial interpolation so as to calculate the total sediment yield, a physical information neural network model inverts a sedimentary thickness field, sediment yield estimation is achieved, and the non-stationary dynamic evolution characteristics of water and sediment of the barrier lake are quantified.

The invention discloses a self-adaptive flood-drought mutual aid system and method for a river channel in an arid region based on terrain remodeling, and belongs to the technical field of ecological water conservancy projects. The system comprises a water and sediment separation topographic unit, a threshold value overflow topographic unit, a narrow and deep evaporation restraining topographic unit and an outer side beach overflowing flood area which are sequentially arranged in the water flow direction and coupled. A bottom plate of the water-sediment separation shape unit is provided with a transverse slope inclining towards an outer side concave bank, and bottom layer sediment is guided by gravity to be conveyed to the outer side; the narrow-deep evaporation-inhibiting terrain unit adopts a narrow-deep compound section with a large depth-to-width ratio to collect clear water so as to inhibit evaporation; and the top of the threshold overflow terrain unit forms a physical threshold for flood and drought switching. The invention further discloses a corresponding implementation method. According to the system, by remodeling the geometric shape of a riverbed, self-adaptive switching between clear water returning, efficient sand discharging and evaporation restraining in the dry season and muddy water beach overflowing, ecological supply and automatic dredging in the flood season is achieved, and the problems of water-sand contradiction and ecological water use of wandering rivers in the arid region are effectively solved.

The invention relates to the technical field of geotechnical engineering parameter inversion, in particular to an inverse Nataf transformation theory-based joint inversion method for static and dynamic parameters of soft soil in the diffuse beach facies of the Yangtze River, and belongs to the related technical field of random stratum simulation. Comprising the following steps that a system collects and arranges silty clay samples of typical sites of the Yangtze River Beach, and key static parameters (c, phi, e, Es, w, IP and IL) and in-situ test SPT-N values of the silty clay samples of the typical sites of the Yangtze River Beach are obtained; a mixed edge distribution model (normal, logarithmic normal, Weibull, Gamma distribution) is adopted to flexibly represent the non-Gaussian statistical characteristics of each parameter; the method comprises the following steps: in a Nataf transformation system, quantifying correlation among parameters by using a Pearson correlation coefficient matrix, and constructing a joint probability distribution model of the Pearson correlation coefficient matrix; establishing an inversion model from random normal distribution of independent variable parameters to consideration of parameter distribution characteristics and parameter correlation conditions and a corresponding database through inverse Nataf transformation; and under the condition of parameter missing, intelligently recommending an optimal missing parameter value from the database based on known parameters by means of a nearest neighbor algorithm.

This invention discloses a forward and inverse calculation method for joint flood control optimization scheduling of reservoirs and floodplains. The method includes: constructing and calibrating a two-dimensional hydrodynamic model based on basic data; constructing and calibrating a piecewise Muskingen model based on the river simulation results of the calibrated two-dimensional hydrodynamic model; fitting the floodplain outlet flood diversion function based on the river flow and floodplain diversion process simulated by the two-dimensional hydrodynamic model to construct a floodplain outlet flood diversion model; setting the objective function and constraints for scheduling; performing inverse optimization of the scheduling scheme based on the piecewise Muskingen model and the floodplain outlet flood diversion model to obtain the optimal scheduling scheme; and inputting the inverse optimization results into the two-dimensional hydrodynamic model for forward calculation to obtain the scheduling result of the optimal scheduling scheme. The advantages are: it considers the floodplain diversion process under the influence of the river flow loop curve, enabling rapid and accurate simulation of flood evolution and floodplain diversion processes, and improving the timeliness and feasibility of considering floodplain diversion in the optimized scheduling model.

The utility model discloses a water conservancy floodplain sector fine particle soil gravel reservoir seepage control body construction vibration roller compactor belongs to vibration roller compactor technical field for floodplain sector construction site use, including vibration roller compactor car body, the lower both sides of roller compaction wheel and be located in the back -to -back frame beam bottom is provided with dust removal subassembly, when the roller compaction wheel is on the fine particle soil gravel reservoir seepage control body construction site of floodplain sector and rolls, dust removal subassembly can synchronous removal roller compaction wheel roller compaction end before and after two sides' dust particle, the both sides of roller compaction wheel and be located in the back -to -back frame beam symmetry is provided with buffer limiting component, when roller compaction wheel rotates and executes roller compaction operation in back -to -back frame beam, two buffer limiting components can buffer and stroke limit to the vibration of roller compaction wheel. The utility model is dusted while compacting, can finish cleaning without interrupting operation, need not extra watering or manual cleaning, saves process time.

A layout of ecological spaces in river corridors is provided. The ecological spaces comprise water ecological spaces and land ecological spaces. The water ecological spaces comprise river channels, floodplains, and lakes and wetlands adjacent to and communicated with the river channels, and the land ecological spaces comprise forest and grasslands adjacent to the river channels, and strip-shaped ecological spaces along riverbanks, with a width of each of the strip-shaped ecological spaces meets ecological functional requirements by a corresponding river section. The layout of the ecological spaces in the river corridors follows a “patch-corridor-node” mode, and the ecological spaces in the river corridors are divided into water ecological patches, water ecological corridors, water ecological nodes, land ecological patches, land ecological corridors, and land ecological nodes.

The application relates to a preparation method of high-water-content Yangtze River floodplain super-long concrete and an auxiliary device thereof. The device comprises a plane moving mechanism, and a segregation-preventing mechanism detachably connected to the plane moving mechanism; the segregation-preventing mechanism comprises a plurality of telescopic string drums and a connecting mechanism, and the plurality of telescopic string drums are detachably connected through the connecting mechanism; the conventional string drum can be arranged into the telescopic string drum, and the connecting mechanism is arranged between the telescopic string drums; on one hand, a plurality of telescopic string drums can be conveniently spliced into a string drum with a required length; on the other hand, according to the steel bar design requirement, the length of each telescopic string drum can be adjusted to make the connecting mechanism at a proper height to cooperate with the steel bar, the steel bar can be penetrated under the premise of connecting the telescopic string drums, cooperation with the discharging opening of the moving concrete pump truck in the pouring process is facilitated, and the cost consumed in preparation of the super-long structure concrete is greatly reduced.