26 results about "Floodplain" patented technology

The invention discloses a valley-type tailing pond flood runoff prediction method based on underlying surface parameter dynamic correction, which comprises the following steps: S1, acquiring valley-type tailing pond multi-source data for preprocessing, and constructing a basic database; s2, underlying surface parameters of the valley-type tailings pond are obtained, and the initial value range of each parameter is determined; s3, establishing an underlying surface parameter dynamic correction model, setting differentiated production and confluence parameters for different areas, and performing dynamic correction; s4, constructing a coupled hydrological-hydrodynamic model, simulating a runoff forming process and time-varying characteristics, outputting predicted values of runoff flow, flood peak time and flood peak water level, and comparing the predicted values with actual measured values of a historical flood area of a satellite remote sensing image for verification and calibration; and S5, inputting the real-time data into the hydrological-hydrodynamic model, and predicting the submerging range, submerging time and submerging degree of the flood runoff based on a geographic space analysis method. According to the method, the timeliness and the accuracy of runoff prediction of small watershed areas without runoff data such as valley type tailings ponds are improved.

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 partition plate type fishway built on a floodplain, and relates to the technical field of fishways, the partition plate type fishway comprises a fishway and a movable cover plate, the fishway is a partition plate vertical seam type fishway, the movable cover plate is arranged at an opening in the upper end of the fishway, and the movable cover plate is detachably connected with the fishway. According to the partition plate type fishway built on the floodplain, fish migration can be achieved for a floodplain type river channel, and silt can be prevented from blocking the fishway when river water overflows the floodplain.

The invention discloses a riverway section optimization processing method in a one-dimensional hydrodynamic model modeling process, which comprises the following steps: extracting section topographic data from a riverway topographic map, drawing an image of each section based on the section topographic data, and determining a riverway slope through the lowest point elevation of each section diagram; an L-shaped and / or linear cross section is presented for the overtopping, and the cross section of the river channel is linearly extended; inserting a certain number of new river channel sections into two adjacent river channel sections of which the elevation difference is greater than a preset elevation difference; and simulating the corresponding water level of the river channel section at the end moment specified by the model through the original river channel section data, extracting the extended and interpolated river channel section data based on the corresponding water level of the river channel section, and retaining effective river channel section data. The method has the advantages that the river section optimization efficiency is effectively improved, the operation is simple, the labor cost and the time cost of data optimization are greatly saved, and the requirement of efficiently and accurately constructing a model can be well met.

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 invention discloses an artificial intelligence-based beach area inundation loss prediction method and system, and relates to data processing and artificial intelligence technologies, and the method comprises the steps: obtaining the topographic data and satellite image data of a target drainage basin, and determining the main river channel range of the target drainage basin; identifying a possible beach area coverage range; performing grid division on the coverage area of any beach area, and determining a loss cardinal number in each grid; determining a plurality of submerging elevations based on the any beach area and the divided grids; acquiring current meteorological data and upstream water level monitoring data of the target drainage basin; utilizing a pre-trained LSTM model to predict the river flow of the future target drainage basin based on the meteorological data and the upstream water level monitoring data; and according to the predicted river flow and the reservoir capacity of the beach area under each submerging elevation, estimating submerging duration and submerging loss. The method and the device are used for realizing graded inundation loss estimation and improving the effect of pre-prediction of flood disasters.

The present application discloses a method and device for scanning and identifying floodplain risks, a processor, and an electronic device. The method includes: scanning the geographic information data corresponding to the target river section to obtain the elevation data of the target floodplain; segmenting the elevation data of the target floodplain to obtain a plurality of segmented data, and calculating the center point coordinates of each segmented data and the center point height of each segmented data based on each segmented data; analyzing the historical hydrological data of the target river section to obtain a water level flow relationship table; calculating based on the water level flow relationship table, the center point coordinates of each segmented data, and the center point height of each segmented data to determine the floodplain risk level distribution map of the target floodplain under the target flow. Through this application, the problem of low accuracy of risk assessment caused by evaluating the floodplain risk of the floodplain through two-dimensional data in the related art is solved.

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 floodplain biological habitat system which comprises a floodplain, a plurality of biological habitat ponds are arranged on the floodplain, the biological habitat ponds are connected in series through side channels to form a biological habitat pond ecological link, and the water inlet end of the biological habitat pond ecological link is communicated with the water outlet end of a water inlet channel through the side channels. The water inlet end of the water inlet channel is communicated with the main riverway, the water outlet end of the biological inhabitation pond link is communicated with the water inlet end of the water outlet channel through the side channel, the water outlet end of the water outlet channel is communicated with the main riverway, an ecological frame belt is arranged between the main riverway and the floodplain, and the water inlet channel and the water outlet channel both penetrate through the ecological frame belt; the invention further discloses a construction method of the flood plain biological habitat system. According to the method, the original floodplain landform is fully reserved and utilized, diversified biological habitat environments are set, meanwhile, the technology has small influence on the surrounding environment, the engineering investment is low, river landscapes can be enriched, and the method has good application prospects.

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 present disclosure relates to the technical field of hydraulic engineering, in particular to a method and device for calculating the hydrological connectivity of river and lake floodplain and main channel, electronic equipment and medium, the method comprising: obtaining characteristic cross-section topographic data of the water area to be analyzed; calculating the division boundary of the floodplain and the main channel by the hydraulic depth objective function method; constructing the relationship function of the water area, wet perimeter and water level of the main channel and the floodplain, obtaining the water conveyance capacity function of the main channel and the floodplain; combining the total flow process to obtain the average flow velocity function of the main channel; identifying the start and end time periods of the floodplain hydrological connectivity event according to the water level, flow process and division boundary of the floodplain and the main channel; calculating the exchange volume of water storage and drainage on the floodplain and the entrainment exchange volume respectively, and finally determining the hydrological connectivity of the floodplain hydrological connectivity event. The present disclosure is based on cross-section topography and hydrological process data, and can obtain the hydrological connectivity index without complex two-dimensional / three-dimensional simulation, thereby providing a reliable technical basis for the treatment of the floodplain and the main channel, ecological restoration and engineering scheduling.

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.

To provide a hinged gate capable of ensuring watertightness near the hinge without interfering with the swinging action of a door body even when the distance between the door body and a structure that pivotally supports the door body changes due to the swinging of the door body. [Solution] The overflow levee (13) has a plurality of hinges (2) arranged in parallel along the longitudinal direction on the bottom surface (13a) of the overflow levee (13), a door body (3) pivotally supported by the hinges (2) near the lower end of the support surface (32) facing the floodplain (10) so as to be freely swingable, and a watertight member (5) that seals the gap between the overflow levee (13) and the lower end (33) of the door body (3). The watertight member (5) is formed in a rectangular shape with a width equal to that of the door body (3) and is bent vertically, and has a flexible sheet (51) whose lower end (512) is fixed to the overflow levee (13) near the hinges (2) and whose upper end (513) is fixed to the door body (3) near the hinges (2), and a flat anti-bending plate (52) fixed to a flat portion (515) between the bent portion (511) of the flexible sheet (51) and the lower end (512) and upper end (513).

The utility model discloses a sand blocking structure suitable for river overtopping areas. An existing sand blocking structure in a river area is not firm in foundation, poor in structural strength and incapable of coping with destructive power of water flow. The concrete foundation comprises a concrete foundation, a stand column is arranged in the concrete foundation, the stand column comprises a vertical section and an inclined section, and the inclined section is arranged on the windward side; sand blocking plates are arranged between the stand columns, and the sand blocking plates and the stand columns are the same in shape; angle steel outer frames are fixed to the bottoms, the tops and the bent positions of the sand blocking plates and fixedly connected with the stand columns. The stand column is arranged in the concrete foundation, and the foundation is stable; alloy square columns are selected, and the sand blocking plates are made of zinc-added iron sheets with angle steel keel frames, so that the sand blocking plates can bear pressure, tearing and sand grinding of wind and can also bear impact damage and soaking damage of water.

The invention belongs to the technical field of hydraulic engineering, and discloses a method for predicting the water level flow of an overtopping river channel with vegetation, which comprises the following steps of: based on a symmetric compound river channel with vegetation, dividing the symmetric compound river channel with vegetation into a main channel and beaches positioned on two sides of the main channel, and constructing a water level flow analysis and calculation model suitable for the overtopping river channel with vegetation on the beaches; the model is solved by combining the average boundary shear stress of the main channel and the beach land and the apparent shear stress of the interface of the main channel and the beach land, and the water level flow of the vegetation overtopping river channel is obtained. The method can efficiently and accurately predict the water level flow of the beach overtopping river channel with the vegetation on the beach land, and fills the technical blank in the field.

The present application relates to a kind of navigation river ecological corridor repair method, comprising: S1: the navigation river ecological corridor is divided into river ecological space and bank area ecological space;S2: the river ecological space is divided into navigation area, riparian wetland and flood area transversely, and the bank area ecological space is divided into bank area passage buffer zone and ecological system service and protection zone;S3: the river ecological space is divided into river biodiversity protection zone and river ecological maintenance zone longitudinally, and the bank area ecological space is divided into seven categories such as forestland ecological system service and protection zone;S4: in riparian wetland, ecological revetment is set in drawdown area, and a variety of aquatic plant communities are set in the transverse direction in coastal shoal area and nearshore floodplain area;In bank area passage buffer zone, a variety of terrestrial plant community protection belts are set;In ecological system service and protection zone, a variety of plant community protection belts are set.The repair method can make the navigation river ecological corridor meet multiple functional requirements.

To provide a water level-linked automatic overflow height adjusting gate capable of letting a large amount of river water flow into a floodplain after overflow has started, while suppressing the frequency of river water overflowing into the floodplain. [Solution] At the bottom 13b of an overflow levee 13 formed one level lower than the levee 11, there is a horizontal rotation axis 2 installed with its axial direction facing horizontally along the flow of the river 100, a gate body 3 installed so as to be able to swing freely within a range from an initial position tilted at a predetermined angle to a tipping position where it is tipping towards the floodplain, and a weight 4 which determines the weight balance of the gate body 3 around the horizontal rotation axis 2, the weight of which is adjusted so that when no water pressure is applied to the gate body 3 from the river side, it keeps the gate body 3 upright in its initial position, and when the river water level rises and exceeds the tipping start water level set at a position higher than the horizontal rotation axis 2, it is able to tip the gate body 3 under water pressure from the river side.

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.

This invention discloses a method for measuring bedload particle velocity based on Doppler current profiler acoustic scattering correction, comprising: selecting a measurement section of a river; sampling sediment from the riverbed surface in the uninundated floodplain; sieving the sampled sediment; calculating the median particle size of the bed sediment in the river section based on the sieving results; selecting a measurement area; using an ADCP and a matching unmanned surface vessel equipped with DGPS for constant-speed cruise current measurement to obtain current measurement data; calculating the riverbed velocity based on the vessel speed data; filtering the riverbed velocity data and calculating the characteristic values ​​of the filtered riverbed velocity data; calculating the bedload vertical projection area ratio and the bedload scattering correction coefficient based on the characteristic values ​​of the filtered riverbed velocity data; and calculating the bedload velocity based on the bedload vertical projection area ratio and the bedload scattering correction coefficient. This invention overcomes the current difficulty of directly measuring accurate bedload velocity using a Doppler current profiler.