CN116307691A

CN116307691A - Risk assessment method and device for hydrologic disaster condition and electronic equipment

Info

Publication number: CN116307691A
Application number: CN202310097568.9A
Authority: CN
Inventors: 尤勇敏; 请求不公布姓名
Original assignee: Jiuling Shanghai Intelligent Technology Co ltd
Current assignee: Jiuling Shanghai Intelligent Technology Co ltd
Priority date: 2023-02-07
Filing date: 2023-02-07
Publication date: 2023-06-23

Abstract

The invention discloses a method and a device for evaluating the risks of hydrologic disaster situations and electronic equipment, which relate to the field of three-dimensional digital twinning, and are used for inputting the forecast rainfall and the forecast rainfall time into a three-dimensional simulation model of a river basin after receiving the forecast rainfall of the target river basin in real time, outputting river basin water level change parameters, wherein the three-dimensional simulation model of the river basin comprises the dam heights of various river courses of the target river basin and the river basin water level heights acquired in real time, evaluating various points where the disaster situations possibly occur in the target river basin based on the river basin water level change parameters to obtain disaster situation point coordinates, and generating a disaster situation risk graph related to the target river basin based on the disaster situation point coordinates, the dam heights of the river courses and the river basin water level change parameters.

Description

Risk assessment method and device for hydrologic disaster condition and electronic equipment

Technical Field

The invention relates to the field of three-dimensional digital twinning, in particular to a method and a device for evaluating risks of hydrologic disaster conditions and electronic equipment.

Background

Along with the continuous improvement of the attention of society to natural disasters, especially the related information of disasters such as floods, fires, drought, waterlogging and the like in various areas is widely concerned, wherein the flood phenomenon is a common natural phenomenon in natural landscapes, is one of the natural disasters in the real world, and needs to evaluate the flood disaster range, flood risk influence and the like in time. The current river basin disaster assessment is mostly based on rainfall forecast, which is roughly calculated and assessed for the water level of the river basin, the disaster forecast is mostly based on preliminary assessment formed by sensing real-time hydrologic data, and the assessment result is mostly based on one experience judgment of historical data, so that efficient intelligent accurate assessment is not formed.

In view of the above problems, no effective solution has been proposed at present.

Disclosure of Invention

The embodiment of the invention provides a hydrological disaster risk assessment method and device and electronic equipment, which at least solve the technical problems that in the related technology, the accuracy of assessment results is low when the hydrological disaster is assessed in a river basin, and the assessment results are mostly judged based on historical experience.

According to an aspect of the embodiment of the invention, there is provided a risk assessment method for a hydrological disaster, including: receiving a forecast rainfall for a target river basin; inputting the forecast rainfall and the forecast rainfall time into a river basin three-dimensional simulation model, and outputting a river channel water level change parameter, wherein the river basin three-dimensional simulation model comprises the dam height of each river channel of the target river basin and the river channel water level height acquired in real time; evaluating each point position of the target river basin, where disaster is likely to occur, based on the river channel water level change parameters to obtain disaster point position coordinates; and generating a disaster risk map associated with the target river basin based on the disaster point coordinates, the dyke height of the river and the river water level change parameters.

Optionally, after receiving the forecasted rainfall for the target basin, including: under the condition that the predicted rainfall is larger than a preset rainfall threshold, starting a rainfall reminding mode, wherein the preset rainfall threshold is an early warning rainfall which possibly causes a basin disaster, and the basin disaster comprises at least one of the following types: spreading and flooding the drainage basin; after the rainfall reminding mode is started, analyzing water flow evolution data; setting reminding interval duration based on the water flow evolution data, and outputting rainfall early warning information when the reminding interval duration arrives.

Optionally, after receiving the forecast rainfall for the target river basin, further comprising: opening a drainage basin risk assessment mode under the condition that the predicted rainfall is larger than a preset rainfall threshold; under the condition that the river basin risk assessment mode is started, acquiring a river basin subarea which is likely to generate disaster in the target river basin at the current moment; acquiring the position coordinates of the river basin subareas and the water flow of each river channel in the river basin subareas; and generating a rainfall parameter table based on the position coordinates of the river basin subareas, the water flow of each river channel and the forecast rainfall.

Optionally, the steps of inputting the predicted rainfall and the predicted rainfall time into a three-dimensional simulation model of the river basin and outputting the river channel water level change parameters include: inputting the predicted rainfall and the predicted rainfall time into a three-dimensional simulation model of the river basin, deducing the water flow speed, the water flow rate and the water level change state of each river channel in the target river basin by the three-dimensional simulation model of the river basin, and outputting the water level change parameters of the river basin.

Optionally, the step of evaluating each point where the disaster may occur in the target river basin based on the river water level variation parameter to obtain the coordinates of the disaster point includes: comparing the estimated water level value in the river channel water level change parameter with the dam height of each river channel, and determining a first disaster situation point set of the target river basin, wherein the disaster situation is likely to occur; expanding surrounding terrains of positions of each disaster point in the first disaster point set by taking each disaster point as a center, scanning the lowest point of the terrains, and determining a second disaster point set; outputting coordinates of each disaster point in the first disaster point set and the second disaster point set.

Optionally, after comparing the estimated water level value in the river water level variation parameter with the dam height of each river, the method further includes: calculating the required time length from the current water level value to the dam height of each river based on the river water level change parameters; inquiring an early warning grade corresponding to the required length based on a disaster condition state table and the rainfall grade at the current moment, wherein the disaster condition state table stores mapping relations of a plurality of rainfall grades, duration and early warning grades; and outputting an early warning identifier corresponding to the early warning grade.

Optionally, the step of generating the disaster situation risk map associated with the target river basin based on the disaster situation point coordinates, the dam height of the river and the river water level variation parameter includes: generating a disaster evaluation table based on the disaster point position coordinates, the dyke height of the river, the river water level change parameters and the early warning level; determining the risk level of each river channel based on the early warning level, the corresponding early warning identification and the disaster point position coordinates; and generating a disaster risk graph related to the target river basin by the risk level of each river basin, the early warning level, the corresponding early warning mark, the disaster point position coordinates, the dam height of the river basin and the river basin water level change parameters.

Optionally, the three-dimensional simulation model of the river basin is pre-constructed, and when constructing the three-dimensional simulation model of the river basin, the method includes: extracting real-time water flow rate, river channel water level height and sediment content of each river channel in the target flow field to generate a river basin hydrological information base; extracting the dam height, the river bed height and the river channel width of each river channel in the target flow field to generate a river channel geographic information base; extracting environmental parameters, topographic information and historical hydrologic disaster data of each river channel in the target flow field to generate a river channel environmental information base; and constructing the river basin three-dimensional simulation model based on the river basin hydrologic information base, the river channel geographic information base and the river channel environment information base.

According to another aspect of the embodiment of the present invention, there is also provided a risk assessment apparatus for a hydrological disaster, including: the receiving unit is used for receiving the forecast rainfall of the target river basin; the input unit is used for inputting the forecast rainfall and the forecast rainfall time into a river basin three-dimensional simulation model and outputting river channel water level change parameters, wherein the river basin three-dimensional simulation model comprises the dam height of each river channel of the target river basin and the river channel water level height acquired in real time; the evaluation unit is used for evaluating each point position of the disaster possibly occurring in the target river basin based on the river channel water level change parameters to obtain disaster point position coordinates; the generation unit is used for generating a disaster situation risk graph related to the target river basin based on the disaster situation point position coordinates, the dam height of the river and the river water level change parameters.

Optionally, the risk assessment device for hydrological disaster further comprises: the first opening unit is used for opening a rainfall reminding mode under the condition that the predicted rainfall is larger than a preset rainfall threshold after receiving the predicted rainfall of the target river basin, wherein the preset rainfall threshold is an early warning rainfall which possibly causes the disaster of the river basin, and the disaster type of the river basin comprises at least one of the following: spreading and flooding the drainage basin; the first analysis unit is used for analyzing water flow evolution data after the rainfall reminding mode is started; the first output unit is used for setting reminding interval duration based on the water flow evolution data and outputting rainfall early warning information when the reminding interval duration arrives.

Optionally, the risk assessment device for hydrological disaster further comprises: the second opening unit is used for opening a river basin risk assessment mode under the condition that the predicted rainfall is larger than a preset rainfall threshold after receiving the predicted rainfall of the target river basin; the first acquisition unit is used for acquiring a river basin subarea which is likely to generate disaster in the target river basin at the current moment under the condition that the river basin risk assessment mode is started; the second acquisition unit is used for acquiring the position coordinates of the river basin subareas and the water flow of each river channel in the river basin subareas; the first generation module is used for generating a rainfall parameter table based on the position coordinates of the river basin subareas, the water flow of each river channel and the forecast rainfall.

Optionally, the input unit includes: the first input module is used for inputting the predicted rainfall and the predicted rainfall time into a three-dimensional simulation model of the river basin, deducing the water flow rate, the water flow rate and the water level change state of each river channel in the target river basin by the three-dimensional simulation model of the river basin, and outputting the water level change parameters of the river basin.

Optionally, the evaluation unit includes: the first determining module is used for comparing the estimated water level value in the river channel water level change parameter with the dam height of each river channel and determining a first disaster situation point set of the target river basin, wherein the disaster situation is likely to occur; the first expansion module is used for expanding surrounding terrains of the positions of the disaster points by taking each disaster point in the first disaster point set as a center, scanning the lowest point of the relief, and determining a second disaster point set; the first output module is used for outputting coordinates of each disaster point in the first disaster point set and the second disaster point set.

Optionally, the risk assessment device for hydrological disaster further comprises: the first calculation module is used for calculating the required time length from the current water level value to the dam height of each river course based on the river course water level change parameters after comparing the estimated water level value in the river course water level change parameters with the dam height of each river course; the first query module is used for querying an early warning grade corresponding to the required length based on a disaster condition state table and the rainfall rating at the current moment, wherein the disaster condition state table stores mapping relations of a plurality of rainfall ratings, duration and early warning grades; and the second output module is used for outputting the early warning identification corresponding to the early warning grade.

Optionally, the generating unit includes: the first generation module is used for generating a disaster situation evaluation table based on the disaster situation point position coordinates, the dam height of the river channel, the river channel water level change parameters and the early warning level; the second determining module is used for determining the risk level of each river channel based on the early warning level, the corresponding early warning mark and the disaster point position coordinates; the second generation module is used for generating disaster situation risk graphs related to the target river basin according to the risk levels of the river courses, the early warning levels, the corresponding early warning marks, the disaster situation point coordinates, the dam heights of the river courses and the river course water level change parameters.

Optionally, the three-dimensional simulation model of the river basin is pre-constructed, and when constructing the three-dimensional simulation model of the river basin, the method includes: the first extraction module is used for extracting the real-time water flow rate, the river channel water level height and the sediment content of each river channel in the target flow field to generate a river field hydrological information base; the second extraction module is used for extracting the dam height, the river bed height and the river channel width of each river channel in the target flow field to generate a river channel geographic information base; the third extraction module is used for extracting the environmental parameters, the topographic information and the historical hydrologic disaster data of each river channel in the target flow field to generate a river channel environmental information base; the construction module is used for constructing the river basin three-dimensional simulation model based on the river basin hydrologic information base, the river channel geographic information base and the river channel environment information base.

According to another aspect of the embodiment of the present invention, there is also provided an electronic device, including: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform the method of risk assessment of a hydrological disaster as described in any one of the above via execution of the executable instructions.

In the method, after receiving the forecast rainfall of a target river basin, the forecast rainfall and the forecast rainfall time are input into a river basin three-dimensional simulation model, river basin water level change parameters are output, the river basin three-dimensional simulation model comprises the dam heights of all river basins of the target river basin and the river basin water level heights acquired in real time, each point where disaster is likely to occur in the target river basin is estimated based on the river basin water level change parameters, disaster point coordinates are obtained, and disaster risk diagrams related to the target river basin are generated based on the disaster point coordinates, the dam heights of the river basins and the river basin water level change parameters.

In the method, hydrologic data in the drainage basin can be monitored in real time, the rainfall data are used for carrying out risk assessment on the disaster caused by rainfall, a drainage basin disaster assessment risk map according to a drainage basin three-dimensional simulation model is generated, the disaster risk of the drainage basin is prompted more intuitively, and the assessment accuracy is greatly improved, so that the technical problems that the drainage basin hydrologic disaster assessment is mostly judged based on historical experience and the assessment result accuracy is low in the related art are solved. .

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a flow chart of an alternative method of risk assessment for a hydrological disaster according to an embodiment of the present invention;

FIG. 2 is a flowchart of an alternative disaster assessment risk pre-warning according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an alternative hydrological disaster risk assessment device according to an embodiment of the present invention;

fig. 4 is a block diagram of a hardware structure of an electronic device (or mobile device) of a risk assessment method of hydrologic disaster according to an embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

To facilitate an understanding of the invention by those skilled in the art, some terms or nouns involved in the various embodiments of the invention are explained below:

the digital elevation model Digital Elevation Model, abbreviated as DEM, realizes the digital simulation of the river basin terrain through the terrain elevation data, can acquire the terrain data through the DEM data, and represents the entity ground model of the ground height in the form of a group of ordered value arrays.

Flood beach refers to the process that the flat land deposited by rivers and seasides is submerged due to flood, the flood is submerged, the beach land exposed in the dead water is submerged, and the valley bottom part outside the submerged riverbed in the river flood period.

It should be noted that, the user information (including but not limited to user equipment information, user personal information, etc.) and the data (including but not limited to data for analysis, stored data, displayed data, uploaded topographic data, etc.) related to the present application are information and data authorized by the user or fully authorized by each party, and the collection, use and processing of the related data need to comply with the related laws and regulations and standards of the related country and region, and provide corresponding operation entries for the user to select authorization or rejection.

The method can be applied to systems/equipment/software which are applied to hydrologic information tracking, disaster forecasting, disaster tracking or hydrologic monitoring and the like, and takes a disaster forecasting system as an example.

The method can be applied to the scene of simulating and deducting the disaster risk of the hydrologic basin, predicting the disaster, and the like, which possibly causes the disaster of the basin, flood beach change or disaster risk evaluation in the three-dimensional digital twin field, and can also be applied to the fields of simulating and deducting the disaster risk of the hydrologic basin and predicting the disaster, and the applicable technical field is not limited.

The present invention will be described in detail with reference to the following examples.

Example 1

According to an embodiment of the present invention, there is provided an embodiment of a method for risk assessment of a hydrological disaster, it being noted that the steps shown in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is shown in the flowchart, in some cases the steps shown or described may be performed in an order different from that herein.

Fig. 1 is a flowchart of an alternative risk assessment method for a hydrological disaster according to an embodiment of the present invention, as shown in fig. 1, the method includes the steps of:

step S101, receiving forecast rainfall of a target river basin;

step S102, inputting the forecast rainfall and the forecast rainfall time into a river basin three-dimensional simulation model, and outputting river channel water level change parameters, wherein the river basin three-dimensional simulation model comprises the dam height of each river channel of a target river basin and the river channel water level height acquired in real time;

step S103, evaluating each point position of the disaster possibly occurring in the target river basin based on the river channel water level change parameters to obtain disaster point position coordinates;

and step S104, generating a disaster risk map of the associated target river basin based on the disaster point coordinates, the dam height of the river and the river water level change parameters.

Through the steps, after the forecast rainfall of the target river basin is received, the forecast rainfall and the forecast rainfall time are input into the river basin three-dimensional simulation model, the river basin water level change parameters are output, the river basin three-dimensional simulation model comprises the dam heights of all river courses of the target river basin and the river course water level heights acquired in real time, each point where disaster is likely to occur in the target river basin is estimated based on the river course water level change parameters, disaster point coordinates are obtained, and disaster risk diagrams related to the target river basin are generated based on the disaster point coordinates, the dam heights of the river courses and the river course water level change parameters. In the embodiment, the hydrologic data in the drainage basin can be monitored in real time, the rainfall data are used for carrying out risk assessment on the disaster caused by rainfall, a drainage basin disaster assessment risk map according to the drainage basin three-dimensional simulation model is generated, the disaster risk of the drainage basin is more intuitively prompted, and the assessment accuracy is greatly improved, so that the technical problems that the drainage basin hydrologic disaster assessment is mostly judged based on historical experience and the assessment result accuracy is low in the related art are solved.

The method is influenced by different terrains (such as mountains, hills, plains, plateaus, grasslands, and the like) and the total amount of precipitation, and the hydrological disaster caused by precipitation in different drainage basins can be greatly distinguished, so that when the disaster risk of a certain drainage basin is evaluated, the hydrological data in the drainage basin need to be collected through a large amount of internet of things equipment in advance, a real-time disaster risk map is built by combining the big data, the map can be an electronic map running on a terminal or a server, and when the map is presented, the map contains basic data such as various rivers, terrains and the like in the drainage basin and disaster risk early warning point data, and the early warning point data comprises but is not limited to: flood dam punching points, flood beach points and key facility points.

Before receiving the predicted rainfall for the target river basin, it is necessary to refine the hydrologic data of the historical time period (for example, the past 3-5 years), retrieve the disaster data of the past year, and refine the data related to flood beach and flood, including: the current environmental data, the predicted rainfall parameters and the predicted climate conditions are extracted from the disaster data, and the hydrologic information (historical water level, historical water flow and historical sand content) and the river bank height data are extracted from the disaster data.

By refining the historical hydrologic data and combining the latest rainfall of weather forecast, the disaster caused by rainfall can be evaluated, wherein the water flow, the water level height and the water level height early warning value are mainly considered during evaluation.

Embodiments of the present invention will be described in detail below in conjunction with the foregoing steps.

Step S101, receiving a forecast rainfall for the target river basin.

Wherein predicting rainfall comprises: the weather forecast of the target river basin yields rainfall in a certain time period (e.g. 12 hours in the future) which can cause the river water level to rise, possibly causing flood beach or flood conditions.

Optionally, after receiving the forecast rainfall for the target river basin, the method includes: under the condition that the predicted rainfall is larger than a preset rainfall threshold, starting a rainfall reminding mode, wherein the preset rainfall threshold is an early warning rainfall which possibly causes a basin disaster, and the basin disaster comprises at least one of the following types: spreading and flooding the drainage basin; after the rainfall reminding mode is started, analyzing water flow evolution data; setting reminding interval duration based on the water flow evolution data, and outputting rainfall early warning information when the reminding interval duration arrives.

The preset rainfall threshold is the lowest rainfall data causing the disaster, and whether the rainfall in a certain time period in the future can cause the disaster can be obtained through the rainfall threshold. Optionally, an early warning value close to the threshold value can be set based on the rainfall threshold value, and by receiving the real-time forecast rainfall data, when the rainfall difference value of the forecast rainfall data at a distance from flood beach reaches the threshold value, or when the lowest rainfall data (lowest rainfall threshold value) causing flood disaster is reached, the real-time monitoring data reminding mode/real-time rainfall reminding mode is started.

According to the rainfall change condition (the change condition of the rainfall per hour, namely heavy rainfall, medium rainfall and light rainfall, which correspond to rainfall standards), the time interval duration for reminding is set (for example, 0.5h for heavy rainfall, 1h for medium rainfall and 2h for light rainfall), and the time interval duration needs to be adjusted as the rainfall is changed continuously, for example, as the rainfall is increased continuously.

Alternatively, after receiving the forecast rainfall for the target river basin, the method further comprises: under the condition that the predicted rainfall is larger than a preset rainfall threshold, a drainage basin risk assessment mode is started; under the condition of starting a river basin risk assessment mode, acquiring a river basin subarea which is likely to generate disaster in a target river basin at the current moment; acquiring position coordinates of the river basin subareas and water flow of each river channel in the river basin subareas; and generating a rainfall parameter table based on the position coordinates of the river basin subareas, the water flow of each river channel and the forecast rainfall.

And when the predicted rainfall is close to the flood beach or close to the rainfall threshold of the flood, carrying out regional risk assessment. And marking the position of the basin with disaster risk according to the forecasted rainfall area, and generating a rainfall parameter table (comprising basin position coordinates, water flow and rainfall data) of the basin.

And S102, inputting the forecast rainfall and the forecast rainfall time into a three-dimensional simulation model of the river basin, and outputting the river channel water level change parameters.

In this embodiment, a three-dimensional simulation model of a drainage basin associated with a target drainage basin may be constructed first, and optionally, when constructing the three-dimensional simulation model of the drainage basin, the method includes: extracting real-time water flow rate, river channel water level height and sediment content of each river channel in a target river channel to generate a river channel hydrological information base; extracting the dam height, the river bed height and the river channel width of each river channel in the target flow field to generate a river channel geographic information base; extracting environmental parameters, topographic information and historical hydrologic disaster data of each river channel in the target flow field to generate a river channel environmental information base; and constructing a river basin three-dimensional simulation model based on the river basin hydrologic information base, the river basin geographic information base and the river basin environment information base.

According to rainfall parameter tables corresponding to all sub-drainage basins in the forecasted rainfall area, the topography data of the drainage basin are arranged and refined to form a drainage basin topography database. And searching all river basin data by searching the topographic data (altitude data information of the topography) in the area where rainfall is predicted, and searching the information such as the length of the river basin, the width of the river channel, the height of the river bed, the height of the water level and the like.

Generating a hydrological information base of a target river basin, a geographic information base of each river channel and an environmental information base of the river channel according to the acquired data information, wherein the hydrological information base stores real-time data such as water flow rate, water level height, sand content and the like corresponding to longitude and latitude coordinates of the river channel; the geographical information base of the river channel stores the height of a river channel dam, the height of a river bed of the river channel and the like corresponding to longitude and latitude coordinates of the river channel; the environmental information base of the river channel stores environmental parameters corresponding to longitude and latitude coordinates of the river channel, surrounding topography states (low-lying, farmland and high-slope) and different disaster situation data caused by different terrains.

Optionally, the step of inputting the predicted rainfall and the predicted rainfall time into the three-dimensional simulation model of the river basin and outputting the river channel water level change parameter comprises the following steps: the predicted rainfall and the predicted rainfall time are input into a three-dimensional simulation model of the river basin, the three-dimensional simulation model of the river basin deduces the water flow rate, the water flow rate and the water level change state of each river channel in the target river basin, and the water level change parameters of the river channel are output.

And step S103, evaluating each point position of the disaster possibly occurring in the target river basin based on the river channel water level change parameters to obtain the coordinates of the disaster point positions.

In this embodiment, the step of evaluating each point where a disaster may occur in the target river basin based on the river water level variation parameter to obtain the coordinates of the disaster point includes: comparing the estimated water level value in the river channel water level change parameter with the dam height of each river channel, and determining a first disaster situation point set of the target river basin, wherein the disaster situations of the first disaster situation point set are likely to occur; expanding surrounding terrains of positions where the disaster points are located by taking each disaster point in the first disaster point set as a center, scanning the lowest point of the terrains, and determining a second disaster point set; outputting the coordinates of each disaster point in the first disaster point set and the second disaster point set.

When the rainfall data which is predicted reaches a water flow early warning threshold value, disaster risk assessment is carried out on the river basin range which reaches the early warning threshold value, and when the disaster risk assessment is carried out, the elevation data h (mm/h) of the river water level of the river in the confluence data of the river can be calculated according to the rainfall predicted condition, namely according to the rainfall of each hour of the area. According to the forecast rainfall period, when the calculated water level of the river channel rises by h (along with the continuous increase of rainfall, the water level of the river channel rises continuously, and the water flow rate increases continuously), traversing the data of the river water level rise per hour, and checking possible disaster risks (such as flood beach/flood and the like) until the forecast rainfall stops.

The elevation data of the river water level is compared with the dam heights of the river channels in the geographic information base of the river channels, disaster (disaster types include, but are not limited to flood beach and flood) points are extracted, the time required for the water level to reach the dam height is calculated according to the time from the stopping of rainfall, the longer the time is required, the lower the risk is, and the possible disaster points are evaluated.

Because along with rainfall increase, disasters such as flood, flood beach can appear, can fix a position the first disaster situation position that takes place these disasters this moment, along with rainfall further enlarges, river course rivers are continuous to cross dykes and dams outside spread (especially dykes and dams both sides spread), the position that the disaster situation can take place in the next time period needs to be monitored this moment, by every disaster situation position in the first disaster situation position collection as the center, the relief minimum point that expands to the surrounding topography of every disaster situation position place, this relief minimum point can be the position that the disaster situation takes place for the next time period, obtain confirm second disaster situation position collection.

Optionally, after comparing the estimated water level value in the river channel water level variation parameter with the dam height of each river channel, the method further comprises: calculating the required time length from the current water level value to the dam height of each river channel based on the river channel water level change parameters; inquiring an early warning grade corresponding to the required length based on a disaster condition state table and the rainfall grade at the current moment, wherein the disaster condition state table stores mapping relations of a plurality of rainfall grades, duration and early warning grades; and outputting an early warning identifier corresponding to the early warning level.

The rainfall rating refers to the severity of the disaster. For example: when the flood beach point position reaches the early warning position, the regional rainfall is regarded as high-level early warning for more than 12 hours, the regional rainfall is regarded as medium-level early warning for 6-12 hours, and the regional rainfall is regarded as low-level early warning for less than 6 hours; and when the flood beach point position reaches the early warning position under the condition of heavy rain, the regional rainfall is regarded as high-level early warning for more than 6 hours, the regional rainfall is regarded as medium-level early warning for 3-6 hours, and the regional rainfall is regarded as low-level early warning for less than 3 hours.

Optionally, step S104 includes: generating a disaster evaluation table based on the disaster point coordinates, the dam height of the river, the river water level change parameters and the early warning level; determining the risk level of each river channel based on the early warning level, the corresponding early warning identification and disaster point position coordinates; and generating a disaster situation risk map of the associated target river basin according to the risk level, the early warning level, the corresponding early warning mark, the disaster situation point position coordinates, the dam height of the river basin and the river basin level change parameters of each river basin.

In this embodiment, the regional disaster situation evaluation table is generated according to the early warning level mark, and optionally, the disaster situation evaluation table may include, but is not limited to: disaster point coordinates, current water flow, dam height, water level height, rainfall and early warning level.

It should be noted that, in this embodiment, by performing risk identification on coordinates of a region range of early warning in a target river basin (mainly performing risk marking on a coordinate region), types of the risk identification may include, but are not limited to: color identification, virtual box identification, text identification, symbol identification, voice, or a combination of the above.

Taking color identification as an example, automatically carrying out color drawing on the area range of the early warning in the target river basin according to the risk identification, and generating a disaster risk map/disaster risk early warning map associated with the target river basin. When the disaster risk map is generated, the risk of the area can be divided into three risk levels of low, medium and high according to the early warning level of the area range. And determining the risk level of the corresponding river channel according to the geographical position coordinates according to the disaster evaluation table to generate a disaster risk map, and displaying the information of the disaster evaluation table according to the corresponding coordinate range.

In the disaster risk map, different river channels are marked through different colors, and meanwhile, information of a disaster evaluation table is displayed according to a coordinate range corresponding to each river basin.

Through the embodiment, the basin data of the target basin can be monitored through the basin three-dimensional simulation model (digital twin geographic data) and the rainfall data received in real time, and the predicted rainfall data is utilized to carry out risk assessment on the disaster caused by rainfall, so that a disaster risk map according to three-dimensional topography is generated, and the disaster risk of the basin can be reminded more intuitively in real time.

The invention is described below in connection with alternative embodiments.

FIG. 2 is a flowchart of an alternative disaster assessment risk pre-warning according to an embodiment of the present invention, as shown in FIG. 2, including:

step 01: and extracting the historical data, namely extracting the hydrological data of 3-5 years in the historical time period. The method comprises the following steps:

1. searching disaster data of the past year, and refining data related to flood beach and flood;

2. extracting the current environmental data, the predicted rainfall parameter and the predicted climate condition from the disaster data;

3. hydrologic information (water level, water flow and sediment content) is extracted from disaster data, and river bank height data are obtained.

Step 02: and carrying out disaster monitoring based on the forecast rainfall data. The method comprises the following steps:

1. receiving real-time forecast rainfall data, and starting a real-time monitoring data reminding mode when the rainfall difference value of the forecast rainfall data reaches a rainfall threshold value at a distance from flood beach or the lowest rainfall data (lowest rainfall threshold value) causing flood disaster;

2. setting a time interval to be reminded (for example, 0.5h for heavy rain, 1h for medium rain and 2h for light rain) according to the rapid and slow conditions of rising rainfall (including the change condition of rainfall per hour);

3. When the predicted rainfall approaches a flood beach or a disaster threshold approaching flood, carrying out regional risk assessment;

4. and marking the position of the basin with disaster risk according to the forecasted rainfall area, and generating a rainfall parameter table (comprising basin position coordinates, water flow and rainfall data) of the basin.

Step 03: and (3) refining the topographic data, namely finishing and refining the topographic data of the river basin according to the rainfall parameter table of the corresponding river basin in the forecasted rainfall area to form a river basin topographic database. The method comprises the following steps:

1. retrieving all river basin data including the information of the length of the river basin, the width of the river channel, the height of the river bed, the height of the water level and the like from the topographic data (the elevation data information of the topography) in the area where rainfall is predicted;

2. generating a hydrological information base of the river basin, a river channel geographic information base and an environment information base of the river channel according to the acquired data information, wherein the hydrological information base: storing real-time data such as water flow rate, water level height, sediment content and the like corresponding to longitude and latitude coordinates of a river channel; river channel geographic information base: the height of a river dike, the height of a river bed and the like corresponding to longitude and latitude coordinates of the river are stored; environmental information base of river course: environmental parameters corresponding to longitude and latitude coordinates of a river channel, surrounding topography states (low-lying, farmland and high-slope) and different disaster situation data caused by different terrains are stored.

Step 04: and (3) disaster situation assessment, namely when the rainfall data which are predicted reach a water flow early warning threshold, performing disaster situation risk assessment on the river basin range which reaches the early warning threshold. The method comprises the following steps:

1. calculating river water level rising data h (mm/h) of a river in the confluence data of the river according to the rainfall forecast situation, namely according to the rainfall of the area per hour;

2. traversing the river water level rising data of each hour according to the forecast rainfall period through the calculated water level rising h of the river channel, and checking the possibly-occurring flood risk until the forecast rainfall stops;

3. the elevation data of the river water level is compared with the dam height of the river in the geographic information base of the river, point positions (flood) are extracted, and the severity degree of the disaster is classified according to the distance from the time when rainfall stops (the time for calculating the elevation of the water level required by the water level to reach the dam height is longer and the risk is lower). For example: when the flood beach point position reaches the early warning position, the regional rainfall is regarded as high-level early warning for more than 12 hours, is regarded as medium-level early warning for less than 6-12 hours, and is regarded as low-level early warning for less than 6 hours; when the flood beach point position reaches the early warning position under the condition of heavy rain, the regional rainfall is regarded as high-level early warning for more than 6 hours, is regarded as medium-level early warning for less than 6-3 hours, and is regarded as low-level early warning for less than 3 hours;

4. Generating an area disaster condition evaluation form (comprising flood beach or flood point coordinates, current water flow, dam height, water level height, rainfall and early warning level) according to the early warning level marks.

Step 05: and generating a risk assessment early warning map, carrying out risk marking on coordinates of an area range of the early warning in the flow area, and carrying out automatic color drawing on the area according to the risk mark to generate a disaster risk early warning map of the area. The method comprises the following steps:

1. based on the evaluation of step 04, the risk of the area is classified into three risk levels of low, medium and high according to the early warning level of the area range.

2. Dividing the geographic position coordinates of the river basin into 10 meters according to different river courses, and coloring every 10 meters according to different risk grades: for example low (pale red), medium (light red), high (dark red).

3. According to the disaster evaluation table, determining the risk level of the corresponding river channel according to the geographic position coordinates, generating a risk evaluation early warning diagram, and simultaneously displaying the information of the disaster evaluation table according to the corresponding coordinate range.

Step 06: and (5) ending.

Real-time monitoring is carried out on real-time river basin data through digital twin geographic data, and risk assessment is carried out on disaster caused by rainfall by utilizing forecast rainfall data, so that a disaster assessment risk map according to three-dimensional topography is generated, and disaster risks of the river basin can be reminded more intuitively.

The invention is described below in connection with alternative embodiments.

Example two

The present embodiment provides a risk assessment device for a hydrological disaster, where the risk assessment device includes a plurality of implementation units, and each implementation unit corresponds to each implementation step in the first embodiment.

Fig. 3 is a schematic view of an alternative risk assessment apparatus for a hydrological disaster according to an embodiment of the present invention, and as shown in fig. 3, the risk assessment apparatus may include: a receiving unit 31, an input unit 32, an evaluation unit 33, a generation unit 34, wherein,

a receiving unit 31 for receiving a forecast rainfall for a target basin;

an input unit 32, configured to input a predicted rainfall and a predicted rainfall time to a three-dimensional simulation model of a river basin, and output a river channel water level variation parameter, where the three-dimensional simulation model of the river basin includes a dam height of each river channel of a target river basin and a river channel water level height acquired in real time;

the evaluation unit 33 is configured to evaluate each point where a disaster may occur in the target river basin based on the river water level change parameter, so as to obtain a disaster point coordinate;

and a generating unit 34, configured to generate a disaster risk map associated with the target river basin based on the disaster point coordinates, the dike height of the river, and the river water level variation parameters.

In the above-mentioned risk assessment device for a hydrological disaster, after receiving the predicted rainfall for the target river basin through the receiving unit 31, the predicted rainfall and the predicted rainfall time are input into the three-dimensional simulation model of the river basin through the input unit 32, the river basin water level change parameters are output, the three-dimensional simulation model of the river basin includes the dam heights of the river basins of the target river basin and the river basin water level heights acquired in real time, the various points where the disaster is likely to occur in the target river basin are assessed through the assessment unit 33 based on the river basin water level change parameters, the disaster point coordinates are obtained, and the disaster risk map associated with the target river basin is generated through the generation unit 34 based on the disaster point coordinates, the dam heights of the river basin and the river basin water level change parameters. In the embodiment, the hydrologic data in the drainage basin can be monitored in real time, the rainfall data are used for carrying out risk assessment on the disaster caused by rainfall, a drainage basin disaster assessment risk map according to the drainage basin three-dimensional simulation model is generated, the disaster risk of the drainage basin is more intuitively prompted, and the assessment accuracy is greatly improved, so that the technical problems that the drainage basin hydrologic disaster assessment is mostly judged based on historical experience and the assessment result accuracy is low in the related art are solved.

Optionally, the risk assessment device for hydrological disaster further comprises: the first opening unit is used for opening a rainfall reminding mode under the condition that the predicted rainfall is larger than a preset rainfall threshold after receiving the predicted rainfall of the target river basin, wherein the preset rainfall threshold is an early warning rainfall which possibly causes the disaster of the river basin, and the type of the disaster of the river basin comprises at least one of the following: spreading and flooding the drainage basin; the first analysis unit is used for analyzing water flow evolution data after the rainfall reminding mode is started; the first output unit is used for setting reminding interval duration based on the water flow evolution data and outputting rainfall early warning information when the reminding interval duration arrives.

Optionally, the risk assessment device for hydrological disaster further comprises: the second opening unit is used for opening a drainage basin risk assessment mode under the condition that the predicted rainfall is larger than a preset rainfall threshold after receiving the predicted rainfall of the target drainage basin; the first acquisition unit is used for acquiring a river basin subarea which is likely to generate disaster in the target river basin at the current moment under the condition that a river basin risk assessment mode is started; the second acquisition unit is used for acquiring the position coordinates of the river basin subareas and the water flow of each river channel in the river basin subareas; the first generation module is used for generating a rainfall parameter table based on the position coordinates of the river basin subareas, the water flow of each river channel and the forecast rainfall.

Optionally, the input unit includes: the first input module is used for inputting the predicted rainfall and the predicted rainfall time into the three-dimensional simulation model of the river basin, deducing the water flow rate, the water flow rate and the water level change state of each river channel in the target river basin by the three-dimensional simulation model of the river basin, and outputting the water level change parameters of the river basin.

Optionally, the evaluation unit comprises: the first determining module is used for comparing the estimated water level value in the river channel water level change parameter with the dam height of each river channel and determining a first disaster situation point set of the target river basin, wherein disaster situations of the first disaster situation point set are likely to occur; the first expansion module is used for expanding surrounding terrains of the positions of the disaster points by taking each disaster point in the first disaster point set as a center, scanning the lowest point of the terrains, and determining a second disaster point set; the first output module is used for outputting coordinates of each disaster point in the first disaster point set and the second disaster point set.

Optionally, the risk assessment device for hydrological disaster further comprises: the first calculation module is used for calculating the required time length from the current water level value to the dam height of each river channel based on the river channel water level change parameters after comparing the estimated water level value in the river channel water level change parameters with the dam height of each river channel; the first query module is used for querying an early warning grade corresponding to the required time based on a disaster state table and the rainfall ratings at the current moment, wherein the disaster state table stores mapping relations of a plurality of rainfall ratings, duration and early warning grades; and the second output module is used for outputting the early warning identification corresponding to the early warning grade.

Optionally, the generating unit includes: the first generation module is used for generating a disaster situation evaluation table based on the disaster situation point coordinates, the dam height of the river channel, the river channel water level change parameters and the early warning level; the second determining module is used for determining the risk level of each river channel based on the early warning level, the corresponding early warning identification and disaster point position coordinates; the second generation module is used for generating disaster situation risk graphs of the associated target river basin according to the risk level and the early warning level of each river channel, the corresponding early warning mark, disaster situation point coordinates, the dam height of the river channel and the river channel water level change parameters.

Optionally, the three-dimensional simulation model of the river basin is pre-constructed, and when constructing the three-dimensional simulation model of the river basin, the method comprises: the first extraction module is used for extracting the real-time water flow rate, the river channel water level height and the sediment content of each river channel in the target flow field to generate a river basin hydrological information base; the second extraction module is used for extracting the dam height, the river bed height and the river channel width of each river channel in the target flow field to generate a river channel geographic information base; the third extraction module is used for extracting the environmental parameters, the topographic information and the historical hydrologic disaster data of each river channel in the target flow field to generate a river channel environmental information base; the construction module is used for constructing a three-dimensional simulation model of the river basin based on the river basin hydrologic information base, the river channel geographic information base and the river channel environment information base.

The above-mentioned risk assessment device for hydrologic disaster may further include a processor and a memory, wherein the above-mentioned receiving unit 31, input unit 32, assessment unit 33, generation unit 34, etc. are stored as program units in the memory, and the processor executes the above-mentioned program units stored in the memory to realize the corresponding functions.

The processor includes a kernel, and the kernel fetches a corresponding program unit from the memory. The kernel can be provided with one or more than one kernel, and the disaster situation risk map of the associated target river basin is generated based on the disaster situation point position coordinates, the dyke height of the river course and the river course water level change parameters by adjusting kernel parameters.

The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), which includes at least one memory chip.

According to another aspect of the embodiment of the present invention, there is also provided an electronic device, including: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform the method of risk assessment of a hydrological disaster of any of the above via execution of the executable instructions.

Fig. 4 is a block diagram of a hardware structure of an electronic device (or mobile device) of a risk assessment method of hydrologic disaster according to an embodiment of the present invention. As shown in fig. 4, the electronic device may include one or more (shown as 402a, 402b, … …,402 n) processors 402 (the processors 402 may include, but are not limited to, a processing means such as a microprocessor MCU or a programmable logic device FPGA), a memory 404 for storing data. In addition, the method may further include: a display, an input/output interface (I/O interface), a Universal Serial Bus (USB) port (which may be included as one of the ports of the I/O interface), a network interface, a keyboard, a power supply, and/or a camera. It will be appreciated by those of ordinary skill in the art that the configuration shown in fig. 4 is merely illustrative and is not intended to limit the configuration of the electronic device described above. For example, the electronic device may also include more or fewer components than shown in FIG. 4, or have a different configuration than shown in FIG. 4.

According to another aspect of the embodiment of the present invention, there is also provided a computer readable storage medium, including a stored computer program, where the computer program when executed controls a device in which the computer readable storage medium is located to perform the method for monitoring a hydrological disaster according to any one of the above.

The present application also provides a computer program product adapted to perform, when executed on a data processing device, a program initialized with the method steps of: receiving a forecast rainfall for a target river basin; inputting the predicted rainfall and the predicted rainfall time into a river basin three-dimensional simulation model, and outputting a river channel water level change parameter, wherein the river basin three-dimensional simulation model comprises the dam height of each river channel of a target river basin and the river channel water level height acquired in real time; evaluating each point position where disaster is likely to occur in the target river basin based on the river channel water level change parameters to obtain disaster point position coordinates; and generating a disaster situation risk map of the associated target river basin based on the disaster situation point coordinates, the dam height of the river and the river water level change parameters.

The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims

1. A method for risk assessment of a hydrological disaster, comprising:

receiving a forecast rainfall for a target river basin;

inputting the forecast rainfall and the forecast rainfall time into a river basin three-dimensional simulation model, and outputting a river channel water level change parameter, wherein the river basin three-dimensional simulation model comprises the dam height of each river channel of the target river basin and the river channel water level height acquired in real time;

evaluating each point position of the target river basin, where disaster is likely to occur, based on the river channel water level change parameters to obtain disaster point position coordinates;

and generating a disaster risk map associated with the target river basin based on the disaster point coordinates, the dyke height of the river and the river water level change parameters.

2. The risk assessment method according to claim 1, characterized by comprising, after receiving a forecast rainfall for a target basin:

under the condition that the predicted rainfall is larger than a preset rainfall threshold, starting a rainfall reminding mode, wherein the preset rainfall threshold is an early warning rainfall which possibly causes a basin disaster, and the basin disaster comprises at least one of the following types: spreading and flooding the drainage basin;

After the rainfall reminding mode is started, analyzing water flow evolution data;

setting reminding interval duration based on the water flow evolution data, and outputting rainfall early warning information when the reminding interval duration arrives.

3. The risk assessment method of claim 1, further comprising, after receiving a forecasted rainfall for the target basin:

opening a drainage basin risk assessment mode under the condition that the predicted rainfall is larger than a preset rainfall threshold;

under the condition that the river basin risk assessment mode is started, acquiring a river basin subarea which is likely to generate disaster in the target river basin at the current moment;

acquiring the position coordinates of the river basin subareas and the water flow of each river channel in the river basin subareas;

and generating a rainfall parameter table based on the position coordinates of the river basin subareas, the water flow of each river channel and the forecast rainfall.

4. The risk assessment method according to claim 1, wherein the step of inputting the predicted rainfall and the predicted rainfall time to a three-dimensional simulation model of a river basin and outputting a river channel water level variation parameter comprises:

inputting the predicted rainfall and the predicted rainfall time into a three-dimensional simulation model of the river basin, deducing the water flow speed, the water flow rate and the water level change state of each river channel in the target river basin by the three-dimensional simulation model of the river basin, and outputting the water level change parameters of the river basin.

5. The risk assessment method according to claim 1, wherein the step of assessing each point where a disaster is likely to occur in the target river basin based on the river water level variation parameter to obtain disaster point coordinates comprises:

comparing the estimated water level value in the river channel water level change parameter with the dam height of each river channel, and determining a first disaster situation point set of the target river basin, wherein the disaster situation is likely to occur;

expanding surrounding terrains of positions of each disaster point in the first disaster point set by taking each disaster point as a center, scanning the lowest point of the terrains, and determining a second disaster point set;

outputting the coordinates of each disaster point in the first disaster point set and the second disaster point set.

6. The risk assessment method according to claim 5, further comprising, after comparing the estimated water level value in the channel water level variation parameter with the dam height of each channel:

calculating the required time length from the current water level value to the dam height of each river based on the river water level change parameters;

inquiring an early warning grade corresponding to the required length based on a disaster condition state table and the rainfall grade at the current moment, wherein the disaster condition state table stores mapping relations of a plurality of rainfall grades, duration and early warning grades;

And outputting an early warning identifier corresponding to the early warning grade.

7. The risk assessment method according to claim 6, wherein the step of generating a disaster risk map associated with the target river basin based on the disaster point coordinates, the dike height of the river, and the river water level variation parameter, comprises:

generating a disaster evaluation table based on the disaster point position coordinates, the dyke height of the river, the river water level change parameters and the early warning level;

determining the risk level of each river channel based on the early warning level, the corresponding early warning identification and the disaster point position coordinates;

and generating a disaster risk graph related to the target river basin by the risk level of each river basin, the early warning level, the corresponding early warning mark, the disaster point position coordinates, the dam height of the river basin and the river basin water level change parameters.

8. The risk assessment method according to claim 1, wherein the basin three-dimensional simulation model is pre-constructed, and when constructing the basin three-dimensional simulation model, it includes:

extracting real-time water flow rate, river channel water level height and sediment content of each river channel in the target flow field to generate a river basin hydrological information base;

Extracting the dam height, the river bed height and the river channel width of each river channel in the target flow field to generate a river channel geographic information base;

extracting environmental parameters, topographic information and historical hydrologic disaster data of each river channel in the target flow field to generate a river channel environmental information base;

and constructing the river basin three-dimensional simulation model based on the river basin hydrologic information base, the river channel geographic information base and the river channel environment information base.

9. A risk assessment device for a hydrological disaster, comprising:

the receiving unit is used for receiving the forecast rainfall of the target river basin;

the input unit is used for inputting the forecast rainfall and the forecast rainfall time into a river basin three-dimensional simulation model and outputting river channel water level change parameters, wherein the river basin three-dimensional simulation model comprises the dam height of each river channel of the target river basin and the river channel water level height acquired in real time;

the evaluation unit is used for evaluating each point position of the disaster possibly occurring in the target river basin based on the river channel water level change parameters to obtain disaster point position coordinates;

the generation unit is used for generating a disaster situation risk graph related to the target river basin based on the disaster situation point position coordinates, the dam height of the river and the river water level change parameters.

10. An electronic device, comprising:

a processor; and

a memory for storing executable instructions of the processor;

wherein the processor is configured to perform the method of risk assessment of a hydrological disaster of any one of claims 1 to 8 via execution of the executable instructions.