Water conservancy dispatching control method and system for flood area

Abstract

The application provides a flood area water conservancy dispatching control method and system, and relates to the technical field of data processing. The maximum limit water level of a river in a flood area, the historical flood period rainfall of the flood area, and the maximum water storage capacity of multiple polders on the interception section of the river are used to determine a to-be-determined expected water level of the river. The to-be-determined expected water level and the minimum water storage capacity of the flood area are used to determine a final expected water level. The expected water level, the current real-time water level of the river, and the average load-carrying area of the interception section of the flood area are used to determine an expected drainage capacity. The expected drainage capacity, the maximum flow at a downstream water gate, the maximum water storage capacity of multiple polders on the interception section of the river, and the predicted evaporation capacity are used to obtain a prepositioning time of water conservancy dispatching. The prepositioning time is used to control the joint operation of an upstream water gate, a downstream water gate, and a polder water gate, to lower the water level in the river, improve the water storage capacity of the river, and enhance the flood resistance of the river, so that the river can cope with flood peaks and reduce the occurrence of flood disasters.

Description

Technical Field

[0001] This invention relates to the field of data processing technology, and more specifically, to a method and system for water conservancy dispatch and control in flood-prone areas. Background Technology

[0002] Water conservancy scheduling and control in flood-prone areas is a complex system engineering project. Its goal is to maximize the use of water conservancy projects (reservoirs, polders, dams, rivers, flood diversion and storage areas, etc.) to reduce flood peaks and store floodwaters, thereby protecting the safety of important targets.

[0003] Existing water conservancy scheduling and control methods in flood-prone areas rely on real-time water and rainfall monitoring and flood forecast information to dynamically adjust the operation status of engineering projects and coordinate the water conservancy engineering system. However, the river capacity is limited, and when there is heavy rainfall or extreme floods, the flood peak has nowhere to be reduced, causing flood disasters. Summary of the Invention

[0004] The problem this invention aims to solve is that existing water conservancy scheduling and control methods in flood-prone areas, based on real-time water and rainfall monitoring and flood forecasting information, fail to reduce flood peaks during periods of heavy and rapid rainfall.

[0005] To address the aforementioned problems, in a first aspect, the present invention provides a method and system for water conservancy dispatch and control in flood-prone areas, comprising:

[0006] Based on the maximum extreme water level of rivers in flood-prone areas, the historical rainfall during flood seasons in flood-prone areas, and the maximum water storage capacity of multiple polder areas along the river's closure section, the expected water level of the river is determined. The closure section is the river segment between the upstream sluice gate and the downstream sluice gate, both of which are located at the boundary of the flood-prone area.

[0007] The final expected water level is determined based on the pending expected water level and the minimum water storage capacity of the flood-prone area;

[0008] The expected drainage volume is determined based on the final expected water level, the current real-time water level of the river, and the average flow-carrying area of ​​the interception section in the flood-prone area;

[0009] The lead time for water conservancy scheduling is obtained based on the expected drainage volume, the maximum flow at the downstream sluice gate, the maximum water storage capacity of multiple polder areas on the river's interception section, and the predicted evaporation.

[0010] Based on the aforementioned lead time, the upstream sluice gate, downstream sluice gate, and polder intake sluice gate are controlled to work together.

[0011] Optionally, determining the final expected water level based on the pending expected water level and the minimum water storage capacity of the flood-prone area includes:

[0012] The minimum limiting water level is obtained based on the minimum water storage capacity of the flood-prone area and the average flow-carrying area of ​​the interception section in the flood-prone area;

[0013] Determine whether the desired water level is greater than the minimum limit water level;

[0014] If the expected water level is greater than the minimum limit water level, then the expected water level will be taken as the final expected water level.

[0015] If the expected water level is less than or equal to the minimum limit water level, the expected water level of the river will be re-determined based on the maximum limit water level of the river in the flood-prone area, the historical rainfall during the flood season in the flood-prone area, the maximum water storage capacity of multiple polder areas on the river's diversion section, and the maximum water storage capacity of the emergency expansion area outside the polder area. The emergency expansion area outside the polder area is a pre-planned area outside the polder area that is allowed to be submerged after the polder is breached.

[0016] Determine whether the newly determined expected water level is greater than the minimum limit water level;

[0017] If the redefined expected water level is greater than the minimum limit water level, then the redefined expected water level will be taken as the final expected water level.

[0018] If the redefined expected water level is still less than or equal to the minimum limit water level, the minimum limit water level will be used as the final expected water level, and the surplus will be determined based on the water level difference between the redefined expected water level and the minimum limit water level.

[0019] Optionally, the desired water level to be determined is... ,

[0020] The redefined expected water level is ,

[0021] in, Indicates the expected water level to be determined. This indicates a newly determined, pending expected water level. H represents the maximum extreme water level of rivers in flood-prone areas, and H represents the historical rainfall during flood seasons in flood-prone areas. This represents the maximum water storage capacity of the i-th polder on the diversion section, and n represents the number of polders. This represents the maximum water storage capacity of the j-th emergency expansion zone on the interception section, and m represents the number of emergency expansion zones. This indicates the average flow-carrying area of ​​the interception section in flood-prone areas.

[0022] Optionally, the expected drainage volume is: ,

[0023] Where Q represents the expected displacement. This indicates the current real-time water level of the river. Indicates the final expected water level. This indicates the average flow-carrying area of ​​the interception section in flood-prone areas.

[0024] Optionally, the lead time for the water conservancy scheduling is:

[0025] ,

[0026] ,

[0027] ,

[0028] ,

[0029] ,

[0030] ,

[0031] ,

[0032] Where T represents the lead time for water conservancy scheduling. Indicates the preset time. Q represents the expected discharge volume, where Q represents the time required for the expected discharge volume to be discharged from the interception section. This indicates the number of times water is drained into the i-th polder area. This represents the maximum water storage capacity of the i-th polder on the diversion section, and n represents the number of polders. Let q represent the time required for all the water in the i-th polder area to evaporate, and let q represent the maximum flow rate at the downstream sluice gate. This indicates the time required for all the water in the polder area to evaporate completely. and Let represent the number of times water was drained into the k-th polder and the number of times water was drained into the r-th polder, respectively. and Let these represent the maximum water storage capacity of the k-th polder and the maximum water storage capacity of the r-th polder, respectively. denoted by , p represents the absolute time difference of the time required for water to evaporate completely in any two polder areas, β represents the predicted evaporation rate, and β represents the correction coefficient.

[0033] Optionally, after obtaining the lead time for water conservancy scheduling based on the expected drainage volume, the maximum flow rate at the downstream sluice gate, the maximum water storage capacity of multiple polder areas on the river's interception section, and the predicted evaporation, the process includes:

[0034] Based on the preset time step, the lead time for water conservancy scheduling is segmented to obtain multiple time windows;

[0035] Based on meteorological forecast data and multiple time windows, the predicted evaporation for each time window is determined;

[0036] If the time required for the water in a polder area to evaporate completely within the previous time window meets the preset conditions, then the predicted evaporation rate will be updated in the next time window, and the time required for the water in each polder area to evaporate completely and the time required for the water in all polder areas to evaporate completely will be corrected.

[0037] Optionally, the preset condition is:

[0038] ,

[0039] in, This represents the number of times the i-th polder area drains water within the x-th time window. This represents the predicted evaporation rate corresponding to the x-th time window. This represents the maximum water storage capacity of the i-th polder area on the diversion section. This indicates the preset time step, and x represents the number of time windows.

[0040] Optionally, the time required for all the water in each polder area to evaporate is adjusted as follows:

[0041] ,

[0042] ,

[0043] The revised time required for all water in the polder area to evaporate completely:

[0044] ,

[0045] in, This represents the number of times the i-th polder area drains water within the x-th time window. This represents the predicted evaporation rate corresponding to the x-th time window. This represents the maximum water storage capacity of the i-th polder area on the diversion section. β represents the time required for all the water in the i-th polder area to evaporate, and β represents the correction coefficient.

[0046] Optionally, controlling the joint operation of the upstream sluice gate, downstream sluice gate, and polder intake gate according to the lead time includes:

[0047] The control time point is determined based on the flood forecast time point and lead time in the meteorological forecast data;

[0048] At the designated time points, the upstream sluice gates are closed and the downstream sluice gates are fully opened. Furthermore, the sluice gates in each polder area are opened only after all the water within the polder area has evaporated, and this opening cycle is repeated a specific number of times. .

[0049] Secondly, the present invention also provides a water conservancy dispatching and control method and system for flood-prone areas, comprising:

[0050] The pending expected water level analysis module is used to determine the pending expected water level of a river based on the maximum limit water level of the river in the flood-prone area, the historical rainfall during the flood season in the flood-prone area, and the maximum water storage capacity of multiple polder areas on the river's closure section. The closure section is the river section between the upstream sluice gate and the downstream sluice gate, both of which are located at the boundary of the flood-prone area.

[0051] The final expected water level analysis module is used to determine the final expected water level based on the pending expected water level and the minimum water storage capacity of the flood-prone area;

[0052] The expected drainage volume analysis module is used to determine the expected drainage volume based on the final expected water level, the current real-time water level of the river, and the average flow-carrying area of ​​the interception section in the flood-prone area.

[0053] The lead time analysis module is used to obtain the lead time for water conservancy scheduling based on the expected drainage volume, the maximum flow at the downstream sluice gate, the maximum water storage capacity of multiple polder areas on the river's interception section, and the predicted evaporation.

[0054] The control module is used to control the upstream sluice gate, downstream sluice gate and polder intake gate to work together according to the pre-set time.

[0055] This invention provides a method and system for water conservancy dispatch and control in flood-prone areas. Compared with the prior art, it has the following advantages:

[0056] Based on the maximum extreme water level of rivers in flood-prone areas, historical flood season rainfall in these areas, and the maximum water storage capacity of multiple polder areas along the river's diversion section, a potential expected water level for the river is determined. This potential expected water level represents the highest water level the river can withstand during floods; that is, the river can accommodate the amount of rainfall during a flood when its water level remains below this potential expected water level. Then, based on the potential expected water level and the minimum water storage capacity of the flood-prone area, a final expected water level is determined. The minimum water storage capacity is the minimum water storage capacity of the diversion section required to meet the water demand of the flood-prone area. This approach balances proactive river regulation with the daily water needs of residents in the flood-prone area. The final expected water level is determined based on the river's current real-time water level and the flood-prone area's... By determining the average flow-carrying area of ​​the interception section, the expected drainage volume can be calculated. Combined with the current water storage situation of the river, the expected drainage volume of the river can be analyzed. Then, based on the expected drainage volume, the maximum flow at the downstream sluice gate, the maximum water storage of multiple polder areas on the interception section of the river, and the predicted evaporation, the lead time for water conservancy scheduling can be obtained. Based on the lead time, the upstream sluice gate, the downstream sluice gate, and the polder intake gate can be controlled to work together to lower the water level in the river in a planned manner before the flood season, thereby improving the river's water storage capacity during floods and enhancing its flood resistance. Even in the event of heavy rainfall, the river can still cope with the flood peak and prevent rainwater from flowing back into residential areas, thus reducing the occurrence of flood disasters. Attached Figure Description

[0057] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0058] Figure 1 A flowchart illustrating a water conservancy dispatch and control method for flood-prone areas, provided by an embodiment of the present invention;

[0059] Figure 2 A partial schematic diagram of a flood-affected area interception section provided in an embodiment of the present invention;

[0060] Figure 3 This is a schematic diagram of the structure of a water conservancy dispatch and control system in a flood-prone area, provided by an embodiment of the present invention.

[0061] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0063] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0064] like Figure 1 As shown in the embodiment of this application, a water conservancy dispatch and control method for flood-prone areas includes:

[0065] S1: Based on the maximum extreme water level of the river in the flood-prone area, the historical rainfall during the flood season in the flood-prone area, and the maximum water storage capacity of multiple polder areas along the river's dammed section, determine the expected water level of the river. The dammed section is the river segment between the upstream and downstream sluice gates, both of which are located at the boundary of the flood-prone area. Figure 2 As shown.

[0066] S2: Determine the final expected water level based on the undetermined expected water level and the minimum water storage capacity of the flood-prone area.

[0067] S3: Determine the expected drainage volume based on the final expected water level, the current real-time water level of the river, and the average flow-carrying area of ​​the interception section in the flood-prone area.

[0068] S4: Based on the expected drainage volume, the maximum flow rate at the downstream sluice gate, the maximum water storage capacity of multiple polder areas on the river's interception section, and the predicted evaporation, the lead time for water conservancy scheduling is obtained.

[0069] S5: Based on the aforementioned lead time, control the upstream sluice gate, downstream sluice gate, and polder intake sluice gate to work together.

[0070] In this optional embodiment, a potential expected water level for the river is determined based on the maximum extreme water level of the river in the flood-prone area, the historical flood season rainfall in the flood-prone area, and the maximum water storage capacity of multiple polder areas along the river's diversion section. This potential expected water level is the highest water level at which the river can cope with flood rainfall during a flood, i.e., the river can accommodate the rainfall during the flood season when the river water level remains below this potential expected water level. Then, based on the potential expected water level and the minimum water storage capacity of the flood-prone area, a final expected water level is determined. The minimum water storage capacity is the minimum water storage capacity of the diversion section that meets the water demand of the flood-prone area (e.g., daily water use, irrigation, or power generation), thus balancing the pre-emptive regulation of the river and the daily water demand of residents in the flood-prone area. By analyzing the current real-time water level of the river and the average flow-carrying area of ​​the interception section in the flood-prone area, the expected drainage volume can be determined. Combined with the current water storage situation of the river, the expected drainage volume of the river can be analyzed. Then, based on the expected drainage volume, the maximum flow at the downstream sluice gate, the maximum water storage of multiple polder areas on the interception section of the river, and the predicted evaporation, the lead time for water conservancy scheduling can be obtained. Based on the lead time, the upstream sluice gate, the downstream sluice gate, and the polder intake gate can be controlled to work together to lower the water level in the river in a planned manner before the arrival of the flood season, thereby improving the river's water storage capacity during the flood season and enhancing the river's flood resistance. Even in the event of heavy rainfall, the river can still cope with the flood peak and prevent rainwater from flowing back into residential areas, thus reducing the occurrence of flood disasters.

[0071] The following is a detailed description of each step.

[0072] S1: Based on the maximum extreme water level of the river in the flood-prone area, the historical rainfall during the flood season in the flood-prone area, and the maximum water storage capacity of multiple polder areas along the river's dammed section, determine the expected water level of the river. The dammed section is the river segment between the upstream and downstream sluice gates, both of which are located at the boundary of the flood-prone area. Figure 2 As shown.

[0073] The undetermined expected water level is ,in, Indicates the expected water level to be determined. This indicates a newly determined, pending expected water level. H represents the maximum extreme water level of rivers in flood-prone areas, and H represents the historical rainfall during flood seasons in flood-prone areas. This represents the maximum water storage capacity of the i-th polder on the diversion section, and n represents the number of polders. This indicates the average flow-carrying area of ​​the interception section in flood-prone areas.

[0074] S2: Determine the final expected water level based on the undetermined expected water level and the minimum water storage capacity of the flood-prone area.

[0075] S21: The minimum limit water level is obtained based on the minimum water storage capacity of the flood-prone area and the average flow-carrying area of ​​the interception section in the flood-prone area.

[0076] Specifically, the minimum water storage capacity is the minimum water storage capacity of the interception section to meet the water demand of flood-prone areas. The flow-carrying area of ​​the interception section in flood-prone areas is the slope area along the river's direction. However, since the river profile varies greatly in space, the average area of ​​the river slope can be taken from the river's digital elevation model as the average flow-carrying area. Dividing the minimum water storage capacity by the average flow-carrying area of ​​the interception section in flood-prone areas yields the minimum limiting water level.

[0077] S22: Determine whether the expected water level is greater than the minimum limit water level.

[0078] S23: If the expected water level is greater than the minimum limit water level, it means that the expected water level can meet the water demand of residents in the flood-prone area. In this case, the expected water level will be taken as the final expected water level.

[0079] S24: If the expected water level is less than or equal to the minimum limit water level, the expected water level of the river is re-determined based on the maximum limit water level of the river in the flood-prone area, the historical rainfall during the flood season in the flood-prone area, the maximum water storage capacity of multiple polder areas on the river's diversion section, and the maximum water storage capacity of the emergency expansion zone outside the polder area. The emergency expansion zone outside the polder area is a pre-planned area outside the polder area that is allowed to be submerged after the polder is breached. Figure 2 As shown.

[0080] In the above, the redefined expected water level is: ,

[0081] in, Indicates the expected water level to be determined. This indicates a newly determined, pending expected water level. H represents the maximum extreme water level of rivers in flood-prone areas, and H represents the historical rainfall during flood seasons in flood-prone areas. This represents the maximum water storage capacity of the i-th polder on the diversion section, and n represents the number of polders. This represents the maximum water storage capacity of the j-th emergency expansion zone on the interception section, and m represents the number of emergency expansion zones. This indicates the average flow-carrying area of ​​the interception section in flood-prone areas.

[0082] To meet the minimum limit water level requirement, the expected water level needs to be increased. Therefore, the emergency expansion zone is also used as a backup flood discharge measure during periods of heavy rainfall to expand the capacity to accommodate rainfall in the later stages, thereby reducing the amount of pre-emptive drainage.

[0083] S25: Determine whether the redefined expected water level is greater than the minimum limit water level.

[0084] S26: If the redefined expected water level is greater than the minimum limit water level, then the redefined expected water level shall be taken as the final expected water level.

[0085] S27: If the re-determined expected water level is still less than or equal to the minimum limit water level, the minimum limit water level shall be taken as the final expected water level, and the surplus shall be determined based on the water level difference between the re-determined expected water level and the minimum limit water level.

[0086] Specifically, the difference between the minimum limiting water level and the newly determined expected water level is calculated. This difference is then multiplied by the average flow-carrying area of ​​the interception section to obtain the surplus. Since the newly determined expected water level is still less than or equal to the minimum limiting water level, the minimum limiting water level is used as the final expected water level. Therefore, after calculating the expected drainage volume based on the minimum limiting water level, the remaining capacity in the interception section may not be sufficient to cope with the upcoming heavy rainfall. If the rainfall in the flood forecast data is not significantly different from the historical flood rainfall, the surplus rainfall will overflow from the interception section, the polder area, and the emergency expansion area during the flood. Based on this surplus, flood prevention measures can be implemented in advance. If the rainfall in the flood forecast data is less than the historical flood rainfall, and the difference can be calculated, and if the product of the difference and the average flow-carrying area is approximately equal to the surplus, then there is no need to worry about the upcoming heavy rainfall. Pre-emptive drainage targeting the minimum limiting water level will be sufficient to cope with the upcoming heavy rainfall.

[0087] S3: Determine the expected drainage volume based on the final expected water level, the current real-time water level of the river, and the average flow-carrying area of ​​the interception section in the flood-prone area.

[0088] The expected drainage volume is: ,

[0089] Where Q represents the expected displacement. This indicates the current real-time water level of the river. Indicates the final expected water level. This indicates the average flow-carrying area of ​​the interception section in flood-prone areas.

[0090] S4: Based on the expected drainage volume, the maximum flow rate at the downstream sluice gate, the maximum water storage capacity of multiple polder areas on the river's interception section, and the predicted evaporation, the lead time for water conservancy scheduling is obtained.

[0091] The lead time for water conservancy scheduling is:

[0092] ,

[0093] ,

[0094] ,

[0095] ,

[0096] ,

[0097] ,

[0098] ,

[0099] Where max() represents the function that takes the maximum value among the multiple elements within the parentheses, and T represents the lead time for water conservancy scheduling. Indicates the preset time. Q represents the expected discharge volume, where Q represents the time required for the expected discharge volume to be discharged from the interception section. This indicates the number of times water is drained into the i-th polder area. This represents the maximum water storage capacity of the i-th polder on the diversion section, and n represents the number of polders. Let q represent the time required for all the water in the i-th polder area to evaporate, and let q represent the maximum flow rate at the downstream sluice gate. This indicates the time required for all the water in the polder area to evaporate completely. and Let represent the number of times water was drained into the k-th polder and the number of times water was drained into the r-th polder, respectively. and Let these represent the maximum water storage capacity of the k-th polder and the maximum water storage capacity of the r-th polder, respectively. denoted by , p represents the absolute time difference of the time required for water to evaporate completely in any two polder areas, β represents the predicted evaporation rate, and β represents the correction coefficient.

[0100] S41: Based on the preset time step, the lead time for water conservancy scheduling is segmented to obtain multiple time windows.

[0101] S42: Based on meteorological forecast data and multiple time windows, determine the predicted evaporation for each time window.

[0102] S43: If the time required for the water in a polder area to evaporate completely within the previous time window meets the preset condition, then update the predicted evaporation amount in the next time window and correct the time required for the water in each polder area to evaporate completely and the time required for the water in all polder areas to evaporate completely.

[0103] Specifically, to minimize the impact of pre-emptive water management, the lead time should be shortened as much as possible; therefore, the analysis of the lead time needs to be as accurate as possible. Since evaporation may fluctuate over time—for example, within one or two days, due to the influence of morning and evening sunlight, evaporation can differ significantly—the average of the fluctuating evaporation can be calculated for each time window, and this average can be used to replace the predicted evaporation within that time window. Considering the impact of evaporation, the lead time is segmented according to a preset time step, and the precise evaporation value is calculated for each time window, thereby further refining the lead time and reducing errors.

[0104] The specific preset conditions that must be met for the water in a polder area to evaporate completely within a time window are as follows:

[0105] ,

[0106] in, This represents the number of times the i-th polder area drains water within the x-th time window. This represents the predicted evaporation rate corresponding to the x-th time window. This represents the maximum water storage capacity of the i-th polder area on the diversion section. This indicates the preset time step, and x represents the number of time windows.

[0107] For example, for the first polder area, when analyzing evaporation time in the first time window, the predicted evaporation rate is used. ,when At that time, the predicted evaporation will be updated to Then monitor within the next time window, when Then the predicted evaporation will be updated to And so on, until... In this case, Reaching a critical value could potentially reduce the time required for all the water in the polder area to evaporate completely.

[0108] The revised time required for all the water in each polder area to evaporate is:

[0109] ,

[0110] ,

[0111] The revised time required for all water in the polder area to evaporate completely:

[0112] ,

[0113] in, This represents the number of times the i-th polder area drains water within the x-th time window. This represents the predicted evaporation rate corresponding to the x-th time window. This represents the maximum water storage capacity of the i-th polder area on the diversion section. β represents the time required for all the water in the i-th polder area to evaporate, and β represents the correction coefficient.

[0114] S5: Based on the aforementioned lead time, control the upstream sluice gate, downstream sluice gate, and polder intake sluice gate to work together.

[0115] S51: Determine the control time point based on the flood forecast time point and lead time in the meteorological forecast data.

[0116] S52: At the controlled time point, control the upstream sluice gate to close and the downstream sluice gate to fully open, and control the sluice gates in each polder area to open after the water in the polder area has evaporated, and the number of times the sluice gates are opened in a cycle is [number missing]. .

[0117] Specifically, based on the control time points, the calculated number of times each polder will be opened, and the time required for water to evaporate completely after each opening, the opening time of the sluice gates in each polder can be calculated sequentially. This allows for the timed and precise control of the sluice gate openings according to the calculated time sequence. Each time a sluice gate is opened, the opening duration can be calculated based on the water flow at the sluice gate and the maximum water storage capacity within the polder, thus controlling the sluice gate closure. This method enables proactive water management and control of the water conservancy system in flood-prone areas, allowing for preemptive flood response measures and mitigating subsequent flood risks, significantly reducing losses caused by floods.

[0118] like Figure 3 As shown in the figure, an embodiment of this application provides a water conservancy dispatch and control system for flood-prone areas, comprising:

[0119] The undetermined expected water level analysis module 100 is used to determine the undetermined expected water level of a river based on the maximum limit water level of the river in the flood-prone area, the historical rainfall during the flood season in the flood-prone area, and the maximum water storage capacity of multiple polder areas on the river's dammed section. The dammed section is the river section between the upstream sluice gate and the downstream sluice gate, both of which are located at the boundary of the flood-prone area.

[0120] The final expected water level analysis module 200 is used to determine the final expected water level based on the pending expected water level and the minimum water storage capacity of the flood-prone area.

[0121] The expected drainage volume analysis module 300 is used to determine the expected drainage volume based on the final expected water level, the current real-time water level of the river, and the average flow-carrying area of ​​the interception section in the flood-prone area.

[0122] The lead time analysis module 400 is used to obtain the lead time for water conservancy scheduling based on the expected drainage volume, the maximum flow at the downstream sluice gate, the maximum water storage capacity of multiple polder areas on the river's interception section, and the predicted evaporation.

[0123] The control module 500 is used to control the upstream sluice gate, the downstream sluice gate and the polder intake gate to work together according to the pre-set time.

[0124] In this embodiment, the beneficial effects of the water conservancy dispatch and control system in flood-prone areas are similar to those of the water conservancy dispatch and control method in flood-prone areas described above, and will not be repeated here.

[0125] like Figure 4 As shown in the embodiment of this application, an electronic device includes a memory 610 and a processor 620; the memory 610 is used to store a computer program; the processor 620 is used to implement the water conservancy dispatch and control method for flood-prone areas as described above when the computer program is executed.

[0126] This application provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it implements the water conservancy scheduling and control method for flood-prone areas as described above.

[0127] In this embodiment, the beneficial effects of the electronic device and the computer-readable storage medium are similar to those of the above-described water conservancy dispatch and control method in flood-prone areas, and will not be repeated here.

[0128] The present invention describes electronic devices that can serve as servers or clients of this application, which are examples of hardware devices that can be applied to various aspects of this application. Electronic devices are intended to represent various forms of digital electronic computer devices, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. Electronic devices can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the application described and / or claimed herein.

[0129] Electronic devices include a computing unit that can perform various appropriate actions and processes based on a computer program stored in read-only memory (ROM) or loaded from a storage unit into random access memory (RAM). The RAM can also store various programs and data required for device operation. The computing unit, ROM, and RAM are interconnected via a bus. Input / output (I / O) interfaces are also connected to the bus.

[0130] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc. In this application, the separately described modules may or may not be physically separate. Some or all of the modules can be selected to achieve the purpose of the embodiments of this application according to actual needs. Furthermore, the functional modules in the various embodiments of this application can be integrated into one processing unit, or each module can exist physically separately, or two or more modules can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0131] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0132] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for water conservancy dispatch and control in flood-prone areas, characterized in that, include: Based on the maximum extreme water level of rivers in flood-prone areas, the historical rainfall during flood seasons in flood-prone areas, and the maximum water storage capacity of multiple polder areas along the river's closure section, the expected water level of the river is determined. The closure section is the river segment between the upstream sluice gate and the downstream sluice gate, both of which are located at the boundary of the flood-prone area. The final expected water level is determined based on the pending expected water level and the minimum water storage capacity of the flood-prone area; The expected drainage volume is determined based on the final expected water level, the current real-time water level of the river, and the average flow-carrying area of ​​the interception section in the flood-prone area; The lead time for water conservancy scheduling is obtained based on the expected drainage volume, the maximum flow at the downstream sluice gate, the maximum water storage capacity of multiple polder areas on the river's interception section, and the predicted evaporation. Based on the aforementioned lead time, the upstream sluice gate, downstream sluice gate, and polder intake sluice gate are controlled to work together.

2. The water conservancy dispatch and control method for flood-prone areas as described in claim 1, characterized in that, The process of determining the final expected water level based on the undetermined expected water level and the minimum water storage capacity of the flood-prone area includes: The minimum limiting water level is obtained based on the minimum water storage capacity of the flood-prone area and the average flow-carrying area of ​​the interception section in the flood-prone area; Determine whether the desired water level is greater than the minimum limit water level; If the expected water level is greater than the minimum limit water level, then the expected water level will be taken as the final expected water level. If the expected water level is less than or equal to the minimum limit water level, the expected water level of the river will be re-determined based on the maximum limit water level of the river in the flood-prone area, the historical rainfall during the flood season in the flood-prone area, the maximum water storage capacity of multiple polder areas on the river's diversion section, and the maximum water storage capacity of the emergency expansion area outside the polder area. The emergency expansion area outside the polder area is a pre-planned area outside the polder area that is allowed to be submerged after the polder is breached. Determine whether the newly determined expected water level is greater than the minimum limit water level; If the redefined expected water level is greater than the minimum limit water level, then the redefined expected water level will be taken as the final expected water level. If the redefined expected water level is still less than or equal to the minimum limit water level, the minimum limit water level will be used as the final expected water level, and the surplus will be determined based on the water level difference between the redefined expected water level and the minimum limit water level.

3. The water conservancy dispatch and control method for flood-prone areas as described in claim 2, characterized in that, The undetermined expected water level is , The redefined expected water level is , in, Indicates the expected water level to be determined. This indicates a newly determined, pending expected water level. H represents the maximum extreme water level of rivers in flood-prone areas, and H represents the historical rainfall during flood seasons in flood-prone areas. This represents the maximum water storage capacity of the i-th polder on the diversion section, and n represents the number of polders. This represents the maximum water storage capacity of the j-th emergency expansion zone on the interception section, and m represents the number of emergency expansion zones. This indicates the average flow-carrying area of ​​the interception section in flood-prone areas.

4. The water conservancy dispatch and control method for flood-prone areas as described in claim 1, characterized in that, The expected drainage volume is: , Where Q represents the expected displacement. This indicates the current real-time water level of the river. Indicates the final expected water level. This indicates the average flow-carrying area of ​​the interception section in flood-prone areas.

5. The water conservancy dispatch and control method for flood-prone areas as described in claim 1, characterized in that, The lead time for water conservancy scheduling is: ， ， ， ， ， ， ， Where T represents the lead time for water conservancy scheduling. Indicates the preset time. Q represents the expected discharge volume, where Q represents the time required for the expected discharge volume to be discharged from the interception section. This indicates the number of times water is drained into the i-th polder area. This represents the maximum water storage capacity of the i-th polder on the diversion section, and n represents the number of polders. Let q represent the time required for all the water in the i-th polder area to evaporate, and let q represent the maximum flow rate at the downstream sluice gate. This indicates the time required for all the water in the polder area to evaporate completely. and Let represent the number of times water was drained into the k-th polder and the number of times water was drained into the r-th polder, respectively. and Let these represent the maximum water storage capacity of the k-th polder and the maximum water storage capacity of the r-th polder, respectively. denoted by , p represents the absolute time difference of the time required for water to evaporate completely in any two polder areas, β represents the predicted evaporation rate, and β represents the correction coefficient.

6. The water conservancy dispatch and control method for flood-prone areas as described in claim 1, characterized in that, The process of obtaining the lead time for water conservancy scheduling based on the expected drainage volume, the maximum flow rate at the downstream sluice gate, the maximum water storage capacity of multiple polder areas along the river's diversion section, and the predicted evaporation includes: Based on the preset time step, the lead time for water conservancy scheduling is segmented to obtain multiple time windows; Based on meteorological forecast data and multiple time windows, the predicted evaporation for each time window is determined; If the time required for the water in a polder area to evaporate completely within the previous time window meets the preset conditions, then the predicted evaporation rate will be updated in the next time window, and the time required for the water in each polder area to evaporate completely and the time required for the water in all polder areas to evaporate completely will be corrected.

7. The water conservancy dispatch and control method for flood-prone areas as described in claim 6, characterized in that, The preset conditions are: ， in, This represents the number of times the i-th polder area drains water within the x-th time window. This represents the predicted evaporation rate corresponding to the x-th time window. This represents the maximum water storage capacity of the i-th polder area on the diversion section. This indicates the preset time step, and x represents the number of time windows.

8. The water conservancy dispatch and control method for flood-prone areas as described in claim 6, characterized in that, The revised time required for all the water in each polder area to evaporate is: ， ， The revised time required for all water in the polder area to evaporate completely: ， in, This represents the number of times the i-th polder area drains water within the x-th time window. This represents the predicted evaporation rate corresponding to the x-th time window. This represents the maximum water storage capacity of the i-th polder area on the diversion section. β represents the time required for all the water in the i-th polder area to evaporate, and β represents the correction coefficient.

9. The water conservancy dispatch and control method for flood-prone areas as described in claim 8, characterized in that, The step of controlling the joint operation of the upstream sluice gate, downstream sluice gate, and polder intake gate according to the aforementioned lead time includes: The control time point is determined based on the flood forecast time point and lead time in the meteorological forecast data; At the designated time points, the upstream sluice gates are closed and the downstream sluice gates are fully opened. Furthermore, the sluice gates in each polder area are opened only after all the water within the polder area has evaporated, and this opening cycle is repeated a specific number of times. .

10. A water conservancy dispatch and control system for flood-prone areas, characterized in that, include: The pending expected water level analysis module is used to determine the pending expected water level of a river based on the maximum limit water level of the river in the flood-prone area, the historical rainfall during the flood season in the flood-prone area, and the maximum water storage capacity of multiple polder areas on the river's closure section. The closure section is the river section between the upstream sluice gate and the downstream sluice gate, both of which are located at the boundary of the flood-prone area. The final expected water level analysis module is used to determine the final expected water level based on the pending expected water level and the minimum water storage capacity of the flood-prone area; The expected drainage volume analysis module is used to determine the expected drainage volume based on the final expected water level, the current real-time water level of the river, and the average flow-carrying area of ​​the interception section in the flood-prone area. The lead time analysis module is used to obtain the lead time for water conservancy scheduling based on the expected drainage volume, the maximum flow at the downstream sluice gate, the maximum water storage capacity of multiple polder areas on the river's interception section, and the predicted evaporation. The control module is used to control the upstream sluice gate, downstream sluice gate and polder intake gate to work together according to the pre-set time.

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