39 results about "Flood stage" patented technology

The invention provides a river levee flood control pile foundation stress analysis method and system, and relates to the technical field of river levee flood control pile foundation stress analysis. Multi-channel sensors are arranged on the pile top, the pile side and the pile end, and the sampling frequency is automatically switched along with the flood stage; inverting the soil saturation based on displacement and pore pressure change, dynamically correcting the permeability coefficient and the effective stress, and outputting a space-time coupling parameter matrix; determining a hazard source for the monitoring point, constructing an elliptical search domain by taking the hazard source as a center, and recursively incorporating abnormal points to form a risk area; a seepage-structure full-coupling finite element model is established in the risk area, the outside of the area is simplified through an equivalent spring boundary, and a pile foundation stress-strain field and a safety coefficient are calculated through self-adaptive time step control; and finally, generating a risk report according to safety factor classification, marking a high-risk area, automatically improving the sampling frequency and triggering early warning.

The invention discloses an airport area underground water and surface water system coupling seepage regulation and control method and system, and the method comprises the steps: employing a multi-source data fusion investigation mode to find out regional stratum and structure characteristics, and determining an underground water occurrence migration rule and a surface water and underground water supplement and drainage relation; constructing a coupling seepage model of the underground water and the surface water system under the current condition by applying a numerical simulation method, and defining a dynamic association mechanism of the underground water and the surface water system in time and space; based on a simulation result, determining a transformation scheme that a main stream adopts a double-hole box culvert and a branch stream adopts a single-hole box culvert, and arranging an electric gate at the box culvert; arranging monitoring points of groundwater level, pore water pressure and surface water system flow in combination with field spring water and well distribution, and constructing a cooperative monitoring network; the coupling seepage law of underground water and surface water systems is analyzed based on monitoring data, and the opening degree of a box culvert electric gate is dynamically adjusted to control rising of the underground water level in the flood period. The stability of a water system in an airport area is ensured.

The invention relates to the technical field of high arch dam deformation field feature analysis, in particular to an interpolation algorithm for high arch dam deformation field feature analysis. According to the technical scheme, the method comprises the steps of data collection and classification, variation function initial parameter setting, variation function fitting through a local weighted least square method, variation function parameter global optimization, Kriging interpolation calculation and consistency checking and parameter adjustment, in the data collection and classification process, monitoring data of the high arch dam under different load working conditions are collected, and the monitoring data of the high arch dam under different load working conditions are obtained. The load working conditions comprise a high water level in a flood period and a low temperature period in winter, and the deformation data of different parts and different time from the total station, the level gauge, the inclinometer and the strain gauge are associated with the corresponding load working conditions and monitoring point coordinate information. Through comprehensive data association, reasonable parameter setting and optimization, accurate interpolation calculation and a reliable result adjustment mechanism, more accurate deformation field analysis of the high arch dam under different load conditions is realized, and safe operation of the dam is guaranteed.

The invention discloses a method for forecasting flood in a drainage basin influenced by strong human activities based on a hybrid model. The method comprises the following steps: firstly, constructing a distributed hydrological model combining sub-drainage basin division and a Muskingum method, and performing calibration; using a hydrological model simulation error and multi-step watershed average rainfall based on river channel propagation time as characteristics, and using a Bayesian optimized LSTM (Long Short Term Memory) to construct an error correction model; and finally coupling the two models to realize real-time forecasting. Verification of the Lanxi river basin shows that compared with a traditional model, the Nash efficiency coefficient of the mixed model is remarkably improved, the flood peak relative error is smaller than or equal to 8%, the peak current time difference is smaller than or equal to 2 hours, precision is stable within the 12-hour forecast period, a long series of continuous historical data is not needed to serve as support, and only data in the session flood period are needed; the method is suitable for hour-scale flood forecasting of the watershed lack of data and strong human activity, an efficient and reliable technical means is provided for flood control and disaster reduction, and the method has wide engineering application prospects.

The present invention discloses an anti-siltation and anti-impact water-dividing structure for the intersection of a karst tunnel and an underground river. The structure utilizes an upstream water-dividing weir, a downstream force-dissipating weir, a porous box culvert-type V-shaped inverted siphon water pipe and an open overflow channel, so that the karst tunnel structure divides the underground river intersecting therewith into upper and lower water-passing sections; the lower water-passing section is a porous box culvert-type V-shaped inverted siphon water pipe, and the upper water-passing section is an open overflow channel. The water-dividing structure of the present invention diverts the underground river through the karst tunnel according to the dry season and the flood season. The buried depth of the V-shaped inverted siphon hole water pipe is shallow, and there is no need to adjust the water flow gradient of the underground river. In addition, the V-shaped inverted siphon hole water pipe solves the problem of siltation on the upstream side of the lining structure of the upstream karst tunnel. At the same time, the water-dividing weir reduces the impact load of the water flow on the lining structure during the flood season, so that the upper and lower diverted water loads achieve a certain degree of balance.

The application provides a built hydropower station operation water level lifting method based on staged design flood, comprising: analyzing flood seasonal variation law of a target hydropower station reservoir, carrying out flood staging on the target hydropower station reservoir flood, and proposing design flood and design flood hydrograph of different periods; constructing a hydropower station reservoir area water surface line calculation model, combining the design flood of the target hydropower station reservoir to calculate the reservoir water surface line under each starting push water level of different periods; constructing a hydropower station flood regulation model, combining the design flood hydrograph of the target hydropower station reservoir to calculate the reservoir highest flood regulation water level under each starting regulation water level of different periods; based on the reservoir water surface line and the highest flood regulation water level, combing the water level lifting opportunity, the water level lifting scheme is drafted. Through the application, the problem that the existing related technology cannot fully tap the comprehensive benefits of the project is solved.

This system provides a water level correction system that is not limited by installation location and can calculate weather-corrected water level information from measured water level data. [Solution] This water level correction system comprises an information acquisition unit that acquires water level information measured by a water level sensor and weather data measured by a weather sensor; a judgment unit that identifies the start of flooding from flood judgment information; a storage unit that stores weather data at the start of flooding as initial information; and a calculation unit that uses the initial information to correct the water level information for weather conditions. This system enables accurate measurement by detecting flooding at the installation site and correcting the water level for weather conditions while the site is flooded.

The application discloses a kind of strong human activity influence basin flood forecasting method based on hybrid model, first, the distributed hydrological model of combination sub-basin division and masking method is constructed and is rated;Again, with the characteristics of hydrological model simulation error and multi-step length basin average precipitation based on river channel propagation time, error correction model is constructed using Bayes optimization LSTM;Finally, real-time prediction is realized by coupling two models.It is proved by Lanxi basin verification that the Nash efficiency coefficient of hybrid model is significantly improved compared with traditional model, the relative error of flood peak is less than or equal to 8%, the time difference of peak appearance is less than or equal to 2 hours, and the accuracy is stable within 12 hours forecast period.The application does not need long series of continuous uninterrupted historical data as support, only needs the data during the period of flood, and is suitable for hour scale flood forecasting in data-deficient strong human activity basin, provides efficient and reliable technical means for flood control and disaster reduction, and has wide engineering application prospect.

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 bridges, and provides a hybrid beam cable-stayed bridge concrete side span and cast-in-place support interactive design method, through interactive design of a concrete side span and a cast-in-place support, unification of structural safety, structural economy and support cost saving is achieved, and the cost of the whole construction process is saved; according to the method, in the interactive design process, the three-level adjustment priority of a support batch dismantling scheme, prestressing tendon arrangement and the geometric size of a main beam is established, and the influence of concrete side span parameter adjustment on a middle span steel beam is reduced to the minimum; according to the method, for the structure meeting the stress requirement and the support meeting the flood crossing requirement, the structure newly-added cost and the support amortization cost are comprehensively considered, the most economical combination scheme is selected, the project life cycle cost is minimized on the premise that safety is guaranteed, and on the premise that the structure stress safety is guaranteed, the project life cycle cost is reduced. Risks of water blocking and damming of a large number of supports in the flood period are thoroughly avoided, and smooth flood discharge and safety of the support structure are ensured.

The invention discloses a flood event segmentation and feature extraction method and device, and the method comprises the following steps: obtaining basic time flow data related to flood, and carrying out the data standardization and time granularity unification processing of the basic time flow data; setting a dynamic flood threshold value, and screening the data set according to the dynamic flood threshold value; performing space-time expansion detection on the flood event; overlapping adaptive merging is carried out on the flood events; and displaying a result through a multi-dimensional flood characteristic quantitative model. According to the technical scheme provided by the invention, a scheme for automatically dividing flood processes and sessions can be provided for flood characteristics of different drainage basins, the flood sessions are adaptively divided, and the segmented flood processes are subjected to characteristic quantification, so that the flood sessions correspond to rainfall periods, and reorganization of flood data and rainfall runoff flood correlation research are facilitated.

The invention discloses water tank experimental equipment based on multi-dimensional data acquisition, and belongs to the technical field of experimental instruments, the water tank experimental equipment comprises a water tank, a circulating mechanism is arranged at the bottom of the water tank, an energy dissipation mechanism is arranged at the water inlet end of the water tank, a filtering mechanism is arranged at the water drainage end of the water tank, and a three-dimensional compound river channel model structure is arranged at the inner bottom of the water tank. The three-dimensional compound river channel model structure is arranged in the water tank, the near-shore part of the river channel at the half position of the section of the compound river channel is simulated to serve as a research object, the three-dimensional physical model can visually present spatial heterogeneity flow, the defects of a traditional two-dimensional model or numerical simulation in vertical momentum exchange and turbulent vortex description are overcome, and the simulation accuracy is improved. And through riverbed sediments and sediment layering, surface water can be simulated to infiltrate and supply underground water in a flood period, a solute migration rule can be revealed, dynamic simulation of surface-underground water interaction can be realized, and then riverway water solute concentration, bed surface pressure and riverway water flow velocity are acquired, so that a detection result is more accurate.

The invention belongs to the technical field of environmental monitoring and governance, and particularly discloses a river-through lake beach vegetation sediment deposition effect monitoring method and a sediment collection device.The method comprises the steps that before the flood period, different sample belts and sample points are arranged at a selected beach along the coastal elevation range, the device is installed, and a vegetation-free area is arranged as a contrast; in the flood period, the silt reaches the river-through lake along with the flood, and the silt intercepted by the vegetation settles to the silt collecting device; and the sediment collected by the sediment collecting device is measured and collected immediately after the flood season ends. The device comprises a connector which is provided with an upper port, a lower port and a plurality of ports which are uniformly distributed along the horizontal direction; the two supporting vertical pipes are connected to the upper end opening and the lower end opening of the connector respectively. The plurality of supporting transverse pipes are respectively connected to ports in the horizontal direction of the connector; the sediment collecting discs are arranged at the ends, away from the connector, of the supporting transverse pipes in a one-to-one correspondence mode. The method is low in cost, and the sediment deposition condition of the whole lake can be accurately evaluated.

The utility model discloses a flood control river levee structure at a river course corner, and relates to the technical field of water conservancy facilities. An impact protection body is arranged at the position of the inner side wall of the concave bank river levee body, a speed reduction protection baffle is arranged on the inner side wall of the impact protection body, a flow dividing buffering area is arranged on the inner side of the concave bank river levee body, and a plurality of flow dividing openings are formed in the side wall of the impact protection body and communicate with the flow dividing buffering area. And through the design of the flow dividing buffer area, water flow can be divided, and the water flow pressure borne by the position of the impact protection body is relieved. The speed reducing baffle and the wave absorbing block are matched with the speed reducing protection baffle on the impact protection body, so that the water flow speed at the concave bank position is effectively reduced, and the impact of the water flow on the river bank is greatly reduced; through the design of the communicating box, the communicating pipeline, the sliding floating plate and the lifting baffle, the flood control river levee structure can automatically adapt to the change of the water level, the river levee is heightened in the flood period, and flood abuse and disaster formation can be effectively prevented.

The invention belongs to the technical field of flood forecasting, and particularly discloses a deep learning flood forecasting method considering a random hydrological process, and the method specifically comprises the steps: collecting the hydrometeorological data of a basin flood period, and carrying out the standardization processing of the collected hydrometeorological data; grading the flood process according to hourly flow, and constructing state transition probability indexes of different flood process grades by adopting a Markov model; a time domain convolutional neural network model is adopted as a basic model, and a loss function in the time domain convolutional neural network model is improved through a state transition probability index, so that a deep learning flood forecasting model considering the random hydrological process is constructed; training the constructed deep learning flood forecasting model through the training set and verifying the deep learning flood forecasting model through the verification set to obtain a trained deep learning flood forecasting model; and accurately forecasting the flood through the trained deep learning flood forecasting model.

The application discloses a construction method for changing a single-wall cofferdam into a double-wall cofferdam, which comprises the following steps: underwater terrain exploration on the outside of the single-wall cofferdam, leveling the covering layer or bare rock surface on the outside of the single-wall cofferdam; installing an outside cofferdam on the outside of the single-wall cofferdam during a low water level period; performing joint sealing of the outside cofferdam; filling the joint with bagged concrete by means of a diving plug on the periphery of the outside cofferdam, and then pouring concrete between the single-wall cofferdam and the outside cofferdam; after the strength of the concrete between the single-wall cofferdam and the outside cofferdam reaches a design requirement, performing hierarchical water pumping and layered installation of inner supports in the cofferdam, and preparing for construction of a bearing platform. The construction method for changing the single-wall cofferdam into the double-wall cofferdam changes the structure of the single-wall cofferdam into the structure of the double-wall cofferdam, increases the structural strength of the original single-wall steel cofferdam under the condition of a flood period or a high water level, reduces the influence of the flood period or the high water level, guarantees the continuity of bridge foundation construction, ensures the implementation period, and avoids increase of project cost.

The utility model discloses a bridge pier on-line safety monitoring device which comprises a scour depth monitoring unit and an anchoring assembly, and the scour depth monitoring unit is fixed on a riverbed through the anchoring assembly. The anchoring assembly comprises a punching pile sleeve and a connecting rod, a plurality of tensile rods capable of horizontally moving are arranged in the punching pile sleeve, the tensile rods are used for horizontally stretching out to be inserted into a riverbed when the punching pile sleeve is in place, and the connecting rod is arranged in the punching pile sleeve and can axially move along the punching pile sleeve and drive the tensile rods to horizontally stretch out to be embedded into the riverbed. According to the utility model, by arranging the anchoring assembly comprising the tensile rod, when the scouring depth monitoring unit is anchored, the tensile rod horizontally extends out to be fixed with a riverbed; in the flood period of a big river, due to the action of the tensile rod, the punching pile sleeve and the connecting rod can be prevented from being pulled out, and the working environment of the scouring depth monitoring unit can be effectively guaranteed.

The application discloses a kind of infrastructure flood resilience evaluation methods, comprising: using flood simulation coupling model to carry out the whole process simulation of urban flood in multiple scenarios to target area;From the simulation process, the spatial attribute index of blue-green-gray infrastructure is extracted as the independent variable, the flood dynamic index of different flood stages is extracted as the dependent variable, to form a sample data set, and the independent variable is divided into multiple independent variable groups according to function;Standardization is carried out on the independent variable and the dependent variable respectively, and data enhancement is carried out;Bayesian mixed effect model is constructed, prior distribution is set for model parameters, posterior distribution of parameters is obtained based on the enhanced sample data set using sampling algorithm, and the evaluation result is output according to the posterior distribution.The application can clearly reveal the dynamic action law of blue-green-gray infrastructure in initial rising period, flood peak period and recession period, output more stable and reliable phased dynamic resilience evaluation result, and significantly improve the safety guarantee level of urban flood control and drainage.

The invention discloses a flood inundation area simulation method based on a reconstructed lake basin DEM. The method comprises the steps that a remote sensing image in a target area within a preset time period and water level data of hydrometric stations distributed in the target area within the preset time period are acquired; determining shooting time of the remote sensing image, and obtaining a water submerging range of the remote sensing image; the shooting time of the remote sensing image is matched with the measuring time of the water level data, and lake water submerging areas corresponding to different water level moments are obtained; determining the responsible range of each hydrometric station in the target area; overlapping the lake water submerging areas corresponding to different water level moments, determining the lowest submerging water level, and reconstructing a lake basin DEM; and according to the water level of the hydrological station during the flood period, obtaining the range of the flood inundation area at the flood moment, and realizing the flood inundation area simulation based on the reconstructed lake basin DEM. According to the method, the limitation of a satellite revisit period is broken through, and the hour-level simulation response of flood routing is realized only by relying on the water level under the condition that remote sensing data is not needed.

The method for describing the characteristics of flood evolution in a beach area comprises the following steps: collecting flood evolution information of a set area, performing flood simulation to obtain water in and out data of the area; setting monitoring sections along the boundary of the set area to monitor the flood in and out of the beach area in all directions during the whole flood period; drawing a double-line flood evolution graph of the set area according to the flood in and out data of the beach area in all directions during the whole flood period; and dividing the flood evolution type according to the double-line flood evolution graph. The method can show in detail how the flood evolution in the beach area changes during a flood process, help researchers understand the characteristics of the flood evolution in the beach area, and make clear the functions of different beach areas in a flood control system, so as to provide guidance for managers to make flood control strategies and develop flood resources.

To provide a floodgate control system that uses a storage battery to control a floodgate, avoiding flashing during floods and reducing power consumption. [Solution] A system for controlling a floodgate powered by electricity supplied from a storage battery is composed of a gate 12, water level sensors 17, 19 that detect the water level in the waterway, and a control panel 11 that controls the floodgate based on the water level detected by the water level sensors 17, 19. The control panel 11 decides whether to close the floodgate when the water level reaches a first threshold, flushes the waterway when the water level reaches or exceeds a second threshold that is smaller than the first threshold, and opens the floodgate after flushing is complete.

The application discloses a flood resisting method for a steel pipe pile structure in water and the steel pipe pile structure in water, and relates to the technical field of the steel pipe pile structure in water. The specific steps are as follows: the steel pipe piles are connected through a transverse water flow direction connecting system, the overall horizontal bearing capacity of the steel pipe pile structure is improved, and the transverse water flow direction connecting system is orthogonal or oblique to the water flow direction; when flood occurs, the water flow force acts on the transverse water flow direction connecting system, the connection between the transverse water flow direction connecting system and the steel pipe piles is adjusted in advance, the transverse water flow direction connecting system is rotated or moved, the water resistance area of the transverse water flow direction connecting system is reduced, and the load of the water flow on the transverse water flow direction connecting system is reduced; after the flood ends, the transverse water flow direction connecting system is reset, the adjacent steel pipe piles are reconnected, and the steel pipe pile structure returns to normal use. The negative effect of the transverse water flow direction connecting system during flood resisting is eliminated, the water resistance area during the flood period is reduced, and the flood resisting capacity of the structure is enhanced.

The utility model discloses a duplex structure of a closed drainage open channel and an inspection road of a tailing pond, which is characterized in that the inner side wall of an inner drainage channel (1) is arranged close to an earthing slope after the tailing pond is closed, and the inner side wall of the inner drainage channel (1) is higher than the outer side wall of the inner drainage channel (1); the outer side wall of the inner side drainage channel (1) and the outer side passage road (2) are connected into a whole and are of an integrated reinforced concrete casting structure, and the cushion layer (6) is located on the lower portion of the outer side passage road (2). The water drainage holes (4) are formed in the outer side wall of the inner side drainage channel (1) in rows from top to bottom and from left to right, and water drainage pipes (5) are installed in the water drainage holes (4); and the protective guard (3) is arranged at the junction of the outer side wall of the inner side drainage channel (1) and the outer side passage road (2). The structure of the drainage open channel is optimized, the periodicity of the flood period is fully considered, the adverse situation that the drainage open channel is narrow and deep under the condition of limitation of a passage road is effectively avoided, and the drainage open channel has the dual functions of drainage and passage.

The present invention discloses a flume experimental device based on multi-dimensional data acquisition, belonging to the technical field of experimental instruments. It includes a flume, a circulation mechanism is provided at the bottom of the flume, an energy dissipation mechanism is arranged at the water inlet end of the flume, a filtering mechanism is provided at the water drainage end of the flume, and a three-dimensional compound river channel model structure is arranged at the inner bottom of the flume. By arranging a three-dimensional compound river channel model structure inside the flume in the present invention, the near-shore part of the river channel at half of the compound river channel section is used as the research object. The three-dimensional physical model can visually present these spatially heterogeneous flows, making up for the deficiencies of traditional two-dimensional models or numerical simulations in vertical momentum exchange and turbulent vortex characterization. Moreover, through the riverbed sediment and sediment stratification, it can simulate the infiltration of surface water into groundwater during the flood period, reveal the law of solute migration, dynamically simulate the interaction between surface water and groundwater, and then collect the solute concentration of the river channel water, the bed surface pressure, and the river channel water flow velocity, making the detection results more accurate.

The utility model provides an anti-seepage structure for a sluice pump station, and relates to the technical field of anti-seepage structures, the anti-seepage structure comprises a bottom plate, the top of the bottom plate is provided with a sluice pump station chamber, the bottom of the bottom plate is provided with a floating assembly, the floating assembly comprises a first waterproof plate, the outer surface of the first waterproof plate is provided with first round holes close to four corners, and the first round holes are communicated with the first waterproof plate. The inner walls of the four first round holes are fixedly connected with fixing shafts. According to the utility model, by arranging the floating assembly, during a flood period and a high water level, the water level can drive the floating block to float on the water surface, the floating block can drive the top of the first waterproof plate to be in contact with the bottom of the bottom plate, and the second waterproof plate and the third waterproof plate can be embedded into the second groove and the third groove respectively; and the second waterproof plate and the third waterproof plate are in a waterproof state, so that leakage at the bottom of the sluice pump station chamber is prevented.

The invention relates to a water control spur dike with bank protection and river navigation condition adjustment functions and a working method thereof. The water control spur dike comprises a dam body fixed section, a dam body movable part and a telescopic control mechanism, wherein the dam body fixed section is arranged on one side of a river bank in the direction perpendicular to the water flow direction, and the dam body movable part is contained in the dam body fixed section and can telescopically move relative to the dam body fixed section. The dam body fixed section is of an internal hollow structure, an opening is formed in the river channel face on the front side of the dam body fixed section, the rear half portion of the dam body fixed section is buried in a river bank, the front half portion of the dam body fixed section extends out of the river channel to be used for retaining water, and a part of the dam body movable part is located in the dam body fixed section. The dam body movable part partially penetrates through the opening and extends out of the dam body fixed section body, and the telescopic control mechanism is used for driving the dam body movable part to perform relative telescopic movement. The water control spur dike can contract in the flood period, flood drainage is facilitated, damage of flood to the dike body is relieved, the service life of the spur dike is prolonged, and the spur dike stretches out and narrows a river channel in the dry season and is convenient to navigate.

A kind of total phosphorus simulation method of basin based on new aujiang three water source components belongs to the technical field of basin hydrology and water quality coupling simulation. First, collect the basic data of flood event in the study basin, and uniformly arrange and pretreat, obtain the flood event data set. Secondly, the new aujiang model of flood period hydrological simulation is constructed, the surface runoff, the soil water runoff, the groundwater runoff and the reservoir discharge after river evolution are calculated, and the three water source components and the total flow of the study section are obtained. Thirdly, the total phosphorus simulation model of flood period is constructed, the total phosphorus load of the study section is obtained, and the total phosphorus concentration is calculated combined with the section flow. Finally, the new aujiang model parameters and the total phosphorus simulation model parameters are calibrated and verified. The present application can realize the simulation of total phosphorus concentration in the flood event process of small and medium-sized basins affected by the regulation of upstream reservoir, provide technical support for the evaluation of basin water environment, pollution load analysis, identification of reservoir regulation influence and pollution control measures.

The invention relates to the technical field of disaster recognition, in particular to a corn flood disaster recognition method based on a high-resolution remote sensing image, which comprises the following steps: acquiring a multi-temporal remote sensing image of a target area, and dividing flood stages based on a flood development process, including a water accumulation period, a flooding period and a water recession period; aiming at each flood stage, respectively extracting stage specific characteristics of the corn canopy; and inputting the stage specific features of each flood stage into a multi-stage collaborative recognition network, and outputting a corn flood disaster recognition result including dominant damage and recessive stress through inter-stage feature transmission and recessive stress analysis. According to the method, the continuity, interpretation and inter-stage coupling sensing capability of disaster recognition are improved, the method is particularly suitable for crop types sensitive to ponding and submerging response such as corn, quantitative reasoning of invisible stress is only achieved, and the disaster situation development direction and short-term recovery expectation can be output.

This product is a waterstop that is installed on levees or on flat ground around houses during floods to prevent overflows and flooding.

The application relates to the technical field of bridges, and provides a mixed beam cable-stayed bridge concrete side span and cast-in-place support interactive design method, which realizes the unity of structural safety, structural economy and support cost saving through interactive design of the concrete side span and the cast-in-place support, and saves the construction whole-process cost; in the interactive design process, a support batched dismantling scheme, prestressed beam arrangement and three-level adjustment priority of the main beam geometric size are established, the influence of concrete side span parameter adjustment on the mid-span steel beam is reduced to the minimum; the application comprehensively considers the structural new cost and the support amortization cost of the support meeting the stress requirement and the flood season demand, selects the most economical combination scheme, realizes the minimization of the whole life cycle cost of the project under the premise of guaranteeing safety, and can completely avoid the risk of a large number of supports blocking and piling up water in the flood period under the premise of guaranteeing the stress safety of the structure, and ensures smooth flood discharge and support structure safety.