An estuary water resource allocation method, device, equipment and medium

Abstract

The application provides a water resource allocation method, device and equipment for an estuary area and a medium, relates to the technical field of hydraulic engineering, and comprises the following steps: obtaining water source data of a target area and water demand data of each water user; determining total fresh water pumping time of a water pumping station in a target tidal period based on inflow of a river section where the water pumping station is located in the target tidal period and a corresponding relationship between the inflow of the river section and the fresh water pumping time; determining daily fresh water flow of the water pumping station in each day of the target tidal period based on the total fresh water pumping time and designed fresh water flow; and determining water resource allocation amount of each water user by using a water resource allocation model according to the daily fresh water flow of each day and the water demand data of each water user, so as to accurately optimize water resource allocation amount of each water user and improve accuracy of water supply guarantee rate calculation and rationality of water resource allocation.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering technology, and more specifically, to a method, apparatus, equipment, and medium for water resource allocation in estuary areas. Background Technology

[0002] With the development of water resource allocation technology, a technology has emerged to ensure water supply in estuary areas affected by saltwater intrusion by jointly scheduling local reservoirs and external river pumping stations. Its characteristic is to use the storage capacity of reservoirs to make up for the water supply gap when pumping stations are restricted from drawing water during saltwater intrusion.

[0003] In existing technologies, when formulating water resource allocation plans, the water intake capacity of pumping stations in external rivers is typically treated as a fixed value based on historical average data or a variable only related to the season. Based on this, a joint scheduling model of reservoirs and pumping stations is constructed with the goal of ensuring water supply, and the model is solved to determine the water supply volume for each water user. However, this approach suffers from inaccurate characterization of the actual water intake capacity of pumping stations; and due to the failure to accurately quantify the complex dynamic impact of saltwater intrusion on the daily freshwater intake duration of pumping stations, the estimation of the actual amount of freshwater that can be extracted by the pumping stations is biased. Therefore, the water supply guarantee rate calculation results of the river-reservoir joint scheduling plan formulated based on this approach are not accurate enough, making it difficult to achieve a scientific and rational allocation of water resources under the influence of saltwater intrusion. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a method, apparatus, equipment and medium for water resource allocation in estuary areas, so as to accurately optimize the water resource allocation of each water user, improve the accuracy of water supply guarantee rate calculation and the rationality of water resource allocation.

[0005] Firstly, this application provides a method for water resource allocation in estuary areas, including:

[0006] Acquire water source data and water demand data of each water user in the target area; among which, water source data includes the design water intake flow rate of the water intake pumping station and the reservoir capacity data of the water supply reservoir in the target area;

[0007] Based on the inflow rate of the river section where the water intake pumping station is located during the target tidal cycle, and the correspondence between the inflow rate of the river section and the freshwater intake duration, the total freshwater intake duration of the water intake pumping station during the target tidal cycle is determined.

[0008] Based on the total freshwater intake duration and the designed water intake flow rate, the daily water intake flow rate of the water intake pumping station is determined for each day within the target tidal cycle.

[0009] Based on the daily water intake flow and the water demand data of each water user, a water resource allocation model is used to determine the water resource allocation amount for each water user. The water resource allocation model takes the minimum total water shortage of all water users during the scheduling period as the objective function, and solves the objective function under preset constraints.

[0010] Optionally, the relationship between the inflow rate and the freshwater extraction duration of a river section is obtained by calibrating the correlation between the inflow rate of the river section during historical tidal cycles and the total freshwater extraction duration during the corresponding tidal cycles.

[0011] Optionally, based on the total desalination duration and the designed water intake flow rate, the daily water intake flow rate of the water intake pumping station within the target tidal cycle is determined, including:

[0012] Based on the total desalination time, the daily desalination time of each water intake pumping station is determined.

[0013] Determine the daily freshwater intake probability for each day based on the daily freshwater intake duration of the water intake pumping station.

[0014] Based on the daily freshwater intake probability and the designed water intake flow rate for each day, the daily water intake flow rate for each day is obtained.

[0015] Optionally, based on the total desalination duration, the daily desalination duration of each daily intake pumping station is determined, including:

[0016] The daily freshwater extraction duration distribution pattern within the target tidal cycle was obtained; the daily freshwater extraction duration distribution pattern was determined based on historical hydrological data of the river section where the water intake pumping station is located and the corresponding historical daily freshwater extraction duration data.

[0017] Based on the daily freshwater extraction time allocation pattern, the total freshwater extraction time within the target tidal cycle is allocated to each day within the target tidal cycle to obtain the daily freshwater extraction time of the water intake pumping station for each day.

[0018] Optionally, determining the daily desalination duration for each daily intake pumping station based on the total desalination duration also includes:

[0019] Following the principle of alternating between the first and last days of the target tide cycle and moving towards the middle, the total freshwater intake time is allocated to each day within the target tide cycle, thus obtaining the daily freshwater intake time of the water intake pumping station for each day.

[0020] Optionally, the water resource allocation model determines the water resource allocation amount for each water user based on preset river-reservoir joint regulation rules; the river-reservoir joint regulation rules include:

[0021] When the daily water intake flow of the water intake pumping station on the target day is greater than or equal to the water demand of the water user on the target day, water will be supplied to the water user according to the water demand, and the excess water will be replenished to the water supply reservoir until the water supply reservoir is full.

[0022] When the daily water intake flow of the water intake pumping station on the target day is less than the water demand of the water user on the target day, the entire daily water intake flow of the target day will be supplied to the water user, and the shortfall will be supplemented by the water supply reservoir until the water supply reservoir is emptied to dead storage capacity.

[0023] Optionally, the preset constraints include at least the water supply capacity constraints of the water supply project and the operating water level constraints of the reservoir; the water supply capacity constraints include the water intake pumping head constraints and the flow capacity constraints of the water transmission pipeline; the operating water level constraints of the reservoir include that the operating water level of the reservoir during the scheduling period is not lower than the dead water level and not higher than the normal storage water level.

[0024] Secondly, this application provides a water resource allocation device for estuary areas, comprising:

[0025] The data acquisition module is used to acquire water source data and water demand data of each water user in the target area; among which, the water source data includes the design water intake flow rate of the water intake pumping station in the target area and the reservoir capacity data of the water supply reservoir.

[0026] The data determination module is used to determine the total freshwater intake duration of the water intake pumping station within the target tidal cycle based on the inflow rate of the river section where the water intake pumping station is located within the target tidal cycle, and the correspondence between the inflow rate of the river section and the freshwater intake duration; and to determine the daily water intake flow rate of the water intake pumping station for each day within the target tidal cycle based on the total freshwater intake duration and the designed water intake flow rate.

[0027] The water resource allocation module is used to determine the water resource allocation amount for each water user based on the daily water intake flow and the water demand data of each water user using a water resource allocation model. The water resource allocation model takes the minimum total water shortage of all water users during the scheduling period as the objective function and solves the objective function under preset constraints.

[0028] Thirdly, this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the aforementioned water resource allocation method for the estuary area.

[0029] Fourthly, this application provides a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the aforementioned water resource allocation method for the estuary region.

[0030] This invention provides a method, apparatus, equipment, and medium for water resource allocation in estuary areas. It acquires water source data for the target area and water demand data for each water user; determines the total freshwater extraction time of the pumping station within the target tidal cycle based on the inflow rate of the river section where the pumping station is located during the target tidal cycle, and the correspondence between the inflow rate and the freshwater extraction duration; determines the daily water extraction rate of the pumping station within the target tidal cycle based on the total freshwater extraction time and the designed water extraction rate; and determines the water resource allocation amount for each water user using a water resource allocation model based on the daily water extraction rate and the water demand data of each water user. Compared with existing technologies that use fixed values ​​based on historical average data or variables only related to the season, this invention constructs a joint scheduling model of reservoirs and pumping stations with the goal of ensuring water supply, and solves the model to determine the water supply amount for each water user. This method can accurately optimize the water resource allocation amount for each water user, thereby improving the accuracy of water supply guarantee rate calculation and the rationality of water resource allocation.

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A flowchart of a water resource allocation method for estuary areas provided by an embodiment of the present invention is shown;

[0034] Figure 2 This invention provides a scatter plot of inflow rate and total freshwater harvesting duration data for a river section during historical tidal cycles, as provided in this embodiment.

[0035] Figure 3 This invention provides a schematic diagram of a simplified node diagram of a river-reservoir joint regulation project in a certain region, as provided in an embodiment of the invention.

[0036] Figure 4 This diagram illustrates the structure of a water resource allocation device for estuary areas provided in an embodiment of the present invention.

[0037] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present invention is shown. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0039] To facilitate a better understanding of this application by those skilled in the art, the technical terms used in this application will be briefly introduced below.

[0040] A water intake pumping station is a water lifting engineering facility set up on a river or riverbank to draw raw water from an external river. In this application, the water intake pumping station is an important node connecting the external river water source and the water supply system, and its water intake capacity is affected by factors such as the external river water level, flow rate, and saltwater intrusion.

[0041] Reservoir capacity data is characteristic data reflecting the water storage capacity of water supply reservoirs. In this application, reservoir capacity data includes at least the reservoir capacity corresponding to the normal water level (upper limit of beneficial reservoir capacity) and the reservoir capacity corresponding to the dead water level (lower limit of available water volume), which are basic parameters used to measure the reservoir's regulation and storage capacity and formulate water supply and replenishment strategies.

[0042] A tidal cycle is a unit of time in which the water level and flow of rivers in estuaries change periodically due to the influence of ocean tides. A tidal cycle usually covers the entire process from one low tide (or high tide) to the next low tide (or high tide). In this application, the tidal cycle is used as the basic time unit for water resource allocation, and its duration is generally 14 to 15 days.

[0043] Freshwater intake duration is the cumulative time during which the chlorine (or salinity) content of the river water in the section where the water intake pumping station is located is below the drinking water standard threshold (such as 250 mg / L), thus enabling the safe extraction of freshwater. Freshwater intake duration is a core indicator for quantifying the impact of saltwater intrusion on the pumping station's water intake capacity.

[0044] The water resource allocation model is a computational model constructed based on mathematical optimization methods to simulate and optimize the water resource allocation process. In this application, the water resource allocation model takes minimizing the total water shortage of all water users during the scheduling period (i.e., maximizing the water supply guarantee rate) as its objective function. It comprehensively considers the dynamic water intake capacity of the water intake pumping station, the storage capacity of the water supply reservoir, the water demand of water users, and various engineering constraints. The optimal water resource allocation for each water user is obtained through an optimization algorithm. The expression for the objective function is as follows:

[0045]

[0046] In the formula, The objective function value is the weighted average water supply guarantee rate for all water users during the scheduling period. For the first The weighting coefficient for each water user typically satisfies , The total number of water users This refers to the total time period data for the scheduling period, typically in days. In the first Time period, the Whether the needs of individual water users are being met, when Then the first The needs of individual water users are met, when Then the first The needs of individual water users have not been met. For the first Water supply guarantee rate for each water user throughout the entire scheduling period;

[0047] In this application, the constraints include, but are not limited to, the pumping head constraint of the water intake pumping station, the flow capacity constraint of the water transmission pipeline, and the operating water level constraint of the reservoir. The pumping head constraint of the water intake pumping station means that, considering head loss, the actual pumping head during water supply and reservoir replenishment must be within the maximum pumping head of the water intake pumping station, i.e.:

[0048]

[0049] In the formula, The outlet elevation of the water intake pumping station. The elevation of the water intake of the water pumping station. This refers to the total head loss during water intake pumping at the water intake pumping station. This is the maximum lifting head of the water intake pumping station;

[0050] The flow capacity constraint of the water transmission pipeline is that the maximum flow capacity constraint of the water transmission pipeline must be met when the water intake pumping station supplies water and replenishes the reservoir.

[0051] The operating water level constraints for reservoirs are as follows: for reservoirs with flood control functions, the reservoir's location is controlled according to the flood season limit water level each year, while the normal storage water level is used during the dry season; for reservoirs without flood control functions, the water level is controlled according to the normal storage water level. In principle, the operating water level of all reservoirs should not be lower than the dead storage level, i.e.:

[0052]

[0053] In the formula, For the first The reservoir is Operating water level during the period For the first The reservoir is The minimum water level allowed during the specified time period. For the first The reservoir is The highest water level allowed during a given time period.

[0054] After introducing the technical terms used in this application, the technical solution provided in this application will be described in detail below.

[0055] This application provides a water resource allocation method for estuary areas, see below. Figure 1 As shown in the embodiments of this application, the water resource allocation method for estuary areas includes:

[0056] Step 110: Obtain water source data and water demand data for each water user in the target area; wherein, the water source data includes the design water intake flow rate of the water intake pumping station in the target area and the reservoir capacity data of the water supply reservoir.

[0057] In this embodiment, water source data and water demand data of each water user in the target area can be obtained by collecting engineering planning and design data, operation and management records, and conducting on-site surveys and statistics of the target area. The water source data includes, but is not limited to, the design water intake flow rate of the water intake pumping station and the reservoir capacity data of the water supply reservoir within the target area. The design water intake flow rate of the water intake pumping station is the maximum flow rate of fresh water that the pumping station can extract from the external river under design conditions. The design water intake flow rate of the water intake pumping station can be obtained from the design documents or completion acceptance data of the water intake pumping station project; for example, the design water intake flow rate of water intake pumping station B... 1,009,000 m 3 / d;

[0058] The reservoir capacity data for water supply includes beneficial capacity and dead capacity. Beneficial capacity refers to the reservoir's capacity between its normal water level and dead water level, which can be used to regulate runoff and supply water. Dead capacity refers to the reservoir's capacity below the dead water level. A portion of the dead capacity does not participate in water supply during routine operations; it serves only as a minimum reserve to ensure the reservoir's ecological and engineering safety. Capacity data can be obtained from reservoir engineering design drawings, capacity curve data, or operational records. For example, if the typical annual water supply reservoir A's annual flow is 356,000 m³... 3 The daily inflow is related to rainfall throughout the year. The reservoir's beneficial storage capacity and dead storage capacity are 1.962 million m³. 3 132,000 m 3 The annual water volume of the water supply reservoir is 4.6707 million cubic meters. 3 The daily inflow is related to rainfall throughout the year. The reservoir's beneficial storage capacity and dead storage capacity are 9.51 million m³. 3 1.446 million m 3 ;

[0059] Water demand data for each water user represents the time-period water demand of different water users during the scheduling period. This data can be obtained by collecting historical water usage statistics, conducting water usage surveys, and forecasting water usage in conjunction with regional economic and social development plans. For example, obtaining the average daily water demand of water user C... 359,000 m 3 The average daily water demand of user D =449,000 m 3 .

[0060] In this application, by accurately obtaining the aforementioned water source data and water demand data, reliable data support can be provided for subsequent analysis of the actual water intake capacity of the water intake pumping station under the influence of saltwater intrusion, formulation of river-reservoir joint regulation rules, and construction of a water resource allocation model. This ensures that the water resource allocation model can truly reflect the water source engineering conditions and water demand of the target area, thereby laying the foundation for the optimization of water resource allocation schemes.

[0061] Step 120: Based on the inflow rate of the river section where the water intake pumping station is located during the target tidal cycle, and the correspondence between the inflow rate of the river section and the freshwater intake duration, determine the total freshwater intake duration of the water intake pumping station during the target tidal cycle.

[0062] In this embodiment of the application, the correspondence between the inflow rate of the river section and the freshwater extraction time is obtained by calibrating the correlation between the inflow rate of the river section in the historical tidal cycle and the total freshwater extraction time in the corresponding tidal cycle.

[0063] Specifically, long-term measured data of the outer river channel where the water intake pumping station is located during the dry season of multiple historical years can be obtained. The average inflow rate within each historical tidal cycle, and the total freshwater extraction duration that the pumping station can actually extract within that historical tidal cycle, can be plotted as a scatter plot. The correlation between these average inflow rates and corresponding total freshwater extraction durations across multiple historical tidal cycles can then be calibrated using regression analysis or curve fitting. This correlation is typically expressed as a function curve or mathematical expression, reflecting the total time that the pumping station can extract freshwater meeting the chloride content standard (i.e., unaffected by salinity intrusion) within a complete tidal cycle under different inflow rate conditions. The calibration of the correlation follows the outsourcing principle, comprehensively considering the range of variation in freshwater extraction duration under different hydrological conditions and coordinating the relationship between upstream and downstream pumping stations to ensure that the determined correlation reasonably reflects the influence of the inflow rate of the target river section on the intensity and duration of salinity intrusion. By establishing the correlation between inflow rate and desalination duration, we can use this as a basis for quickly estimating the total desalination duration of the pumping station based on the inflow rate during the target tidal cycle, thereby enabling dynamic assessment of the pumping station's water intake capacity under different hydrological year types and tidal cycles.

[0064] Furthermore, based on the inflow rate of the river section where the water intake pumping station is located during the target tidal cycle, and the correspondence between the inflow rate and the freshwater intake duration, the total freshwater intake duration of the water intake pumping station during the target tidal cycle is determined. Specifically, the target tidal cycle is typically fourteen to fifteen days long, and the inflow rate during the target tidal cycle is the average flow rate of the outer river channel during the corresponding tidal cycle. Based on the inflow rate during the target tidal cycle and the aforementioned correspondence, the total freshwater intake duration of the water intake pumping station during the target tidal cycle can be calculated.

[0065] In this application, the average flow data of the outer river channel where the water intake pumping station is located during the tidal cycle from 2005 to 2022 and the total freshwater intake duration that the water intake pumping station can actually extract during the tidal cycle are obtained and compiled into a data set as follows: Figure 2 The scatter plot shown, based on the outsourcing principle and considering coordination with upstream and downstream water intake pumping stations, calibrates the design correlation between the total freshwater intake duration during the tidal cycle of the water intake pumping station and the average inflow rate during the tidal cycle of the corresponding external river section:

[0066]

[0067] In the formula, The total freshwater intake time of the pumping station within a complete tidal cycle, usually expressed in hours. The average inflow rate of the river section outside the water intake pumping station during the same tidal cycle. The coefficients of the quadratic function relationship obtained through calibration historical data are given, where The coefficient of the quadratic term, The coefficient of the linear term, For constant terms, The specific value of the coefficient depends on the hydrological characteristics of the target river section and the pattern of saltwater intrusion.

[0068] Based on the design correlations and the average flow data for each tidal cycle in a typical year, the total freshwater intake duration of the pumping station in each tidal cycle of that typical year was calculated. The total freshwater duration for 14 tidal cycles during the period from September to March in a typical year affected by saltwater intrusion is as follows: 234.45h, 163.87h, 143.66h, 141.58h, 139.98h, 128.63h, 125.70h, 123.27h, 123.79h, 135.98h, 124.35h, 114.93h, 159.36h, and 195.73h.

[0069] In this application, the total freshwater intake duration is a key indicator characterizing the length of the water intake window period of a water intake pumping station under specific hydrological conditions. It provides a basis for the subsequent reasonable allocation of the total freshwater intake duration to each day within the tidal cycle and the subsequent calculation of the daily water intake capacity of the pumping station, thereby enabling a more accurate simulation of the actual operating status of the pumping station under the influence of saline tide.

[0070] Step 130: Based on the total freshwater intake duration and the designed water intake flow rate, determine the daily water intake flow rate of the water intake pumping station for each day within the target tidal cycle.

[0071] In this embodiment, the daily water intake flow rate of the water intake pumping station within the target tidal cycle is determined based on the total desalination duration and the designed water intake flow rate. This includes: determining the daily desalination duration of the water intake pumping station within each day based on the total desalination duration; determining the daily desalination probability of each day based on the daily desalination duration of the water intake pumping station; and obtaining the daily water intake flow rate based on the daily desalination probability and the designed water intake flow rate. This is achieved by obtaining the daily desalination duration distribution pattern within the calibrated target tidal cycle; and by determining the daily desalination probability... The freshwater duration allocation pattern involves distributing the total freshwater intake duration within the target tidal cycle to each day within that cycle, thus obtaining the daily freshwater intake duration for each pumping station. The daily freshwater intake duration allocation pattern is calibrated based on historical hydrological data and corresponding historical daily freshwater intake duration data for the river section where the pumping station is located. Furthermore, the total freshwater intake duration is allocated to each day within the target tidal cycle according to the principle of alternating allocation from the first and last days of the target tidal cycle towards the middle, thus obtaining the daily freshwater intake duration for each pumping station.

[0072] In this embodiment of the application, after determining the total desalination time of the water intake pumping station within the target tidal cycle, it is necessary to reasonably allocate the total desalination time to each day within the tidal cycle, thereby determining the actual daily water intake capacity of the water intake pumping station. Specifically, firstly, based on the total desalination time, the daily desalination time of the water intake pumping station is determined for each day; then, based on the daily desalination time of the water intake pumping station, the daily desalination probability for each day is determined; finally, based on the daily desalination probability for each day and the designed water intake flow rate, the daily water intake flow rate of the water intake pumping station within the target tidal cycle is obtained.

[0073] To rationally allocate the total freshwater extraction time of the tidal cycle to each day, this can be achieved by obtaining the daily freshwater extraction time distribution pattern within a calibrated target tidal cycle. This daily freshwater extraction time distribution pattern is calibrated based on historical hydrological data and corresponding historical daily freshwater extraction time data for the river section where the pumping station is located. Specifically, the daily freshwater extraction time for all tidal cycles during a long dry season at the pumping station can be collected, along with factors influencing saltwater intrusion such as external river flow, tidal level, wind direction, and wind speed. The distribution pattern of the daily freshwater extraction time can then be obtained through training using machine learning and other methods. In this application, daily freshwater harvesting duration data for all tidal cycles in the river section where the pumping station is located over multiple dry years, along with corresponding daily average flow, daily average tide level, and daily wind direction and speed—all factors influencing saltwater intrusion—can be collected as a training sample set. Each sample includes the total freshwater harvesting duration of the tidal cycle, the day's sequence number within the tidal cycle, the cumulative value of the previously allocated freshwater harvesting duration, and the actual freshwater harvesting duration for that day. A random forest algorithm is then used to train the training sample set, yielding a statistical pattern that can predict the daily freshwater harvesting duration distribution based on the total freshwater harvesting duration of the tidal cycle. Based on this statistical pattern, a mapping relationship between the total freshwater harvesting duration of the tidal cycle and the daily freshwater harvesting duration can be established, which can then be used to allocate the total freshwater harvesting duration of the target tidal cycle to each day.

[0074] Based on the daily freshwater extraction duration allocation pattern, the total freshwater extraction duration within the target tidal cycle is distributed to each day within the target tidal cycle, thus obtaining the daily freshwater extraction duration for each pumping station. Let the total freshwater extraction duration for the target tidal cycle be: The daily distribution pattern of the daily light-taking time within the target tide cycle is as follows:

[0075] like ,but ;

[0076] like ,but ;

[0077] like and ,but ;

[0078] in, The total freshwater duration of the target tide cycle, expressed in hours. Each target tide cycle typically lasts between 14 and 15 days. The functional relationship between the total freshwater duration of the target tidal cycle and the average inflow of water from the outer river is usually derived from an empirical formula obtained by calibrating historical data. For the first tidal cycle within the target tidal period The daily light-drying duration, in hours, of which The value ranges from 1 to the total number of days in the target tide cycle (usually 14 to 15 days). This is the cumulative value of the daily light-out durations that have been allocated up to the current allocation date, where... and All are integers.

[0079] Regarding the specific daily allocation of desalination time, the principle of alternating allocation from the first and last days of the target tide cycle towards the middle can be followed, distributing the total desalination time across all days within the target tide cycle. Specifically, taking the first target tide cycle as an example, the allocation proceeds from both ends towards the middle, first allocating the desalination time for the first day. Secondly, allocate the daily light-collecting time for the last day. Then redistribute the daily light-drying time for the second day. Then redistribute the daily light-drying time on the penultimate day. And so on, the duration of light meals per day. They are respectively:

[0080] = ,

[0081] =

[0082]

[0083]

[0084]

[0085]

[0086]

[0087]

[0088]

[0089]

[0090]

[0091]

[0092]

[0093]

[0094]

[0095] Taking the first target tide cycle as an example, the calculated daily freshwater intake durations for days 1 to 15 are: 24, 24, 24, 24, 21, 5, 0, 0, 0, 6, 10, 24, 24, 24, 24.

[0096] The daily freshwater extraction time allocation pattern proposed in this application takes into account the changing trend of the freshwater extraction window during the upstream intrusion of saltwater, which first gradually shortens and then gradually lengthens within the tidal cycle. That is, the freshwater extraction time is relatively long at the beginning and end of the tidal cycle, while the middle period is affected by the backwater effect of saltwater, resulting in a short or even no freshwater extraction time. By allocating the time alternately from both ends to the middle each day, the intraday distribution pattern of freshwater extraction time during the actual evolution of saltwater intrusion can be better simulated, making the simulated daily water extraction process of the pumping station more consistent with the actual situation and providing more accurate input data for the simulation and optimization of subsequent river-reservoir joint regulation rules.

[0097] After determining the daily freshwater intake duration for each day within the target tidal cycle at the water intake pumping station, the daily freshwater intake probability for each day is calculated based on the daily freshwater intake duration. Specifically, the daily freshwater intake probability refers to the proportion of the available freshwater intake time out of the total 24 hours of the day, and its calculation formula is as follows:

[0098]

[0099] In the formula, For the first The daily probability of taking a short position is a dimensionless ratio, generally ranging from 0 to 1. For the first tidal cycle within the target tidal period The daily light-drying duration, in hours;

[0100] The degree of saltwater intrusion affecting the water intake pumping station on a given day is determined by the daily freshwater extraction probability. The higher the daily freshwater extraction probability value, the longer the time window during which the water intake pumping station can extract freshwater, meaning the longer the effective time the water intake pumping station can actually operate and extract water. Conversely, the lower the daily freshwater extraction probability value, the more severe the saltwater intrusion affecting the water intake pumping station on that day, meaning the time window during which the water intake pumping station can extract freshwater is shorter.

[0101] Based on the daily freshwater intake probability and the designed water intake flow rate for each day, the daily water intake flow rate can be obtained using the following formula:

[0102]

[0103] In the formula, For the water intake pumping station at the first The daily water intake flow rate, expressed in volume per hour, is used to characterize the total amount of freshwater that the pumping station can actually extract on that day. The design water intake flow rate of the water intake pumping station;

[0104] The actual water intake capacity of a water intake pumping station on a given day is constrained by both the station's design scale and the available freshwater intake window. The probability of obtaining freshwater on that day reflects the effective utilization of time, while the designed intake flow rate reflects the pumping station's water intake capacity per unit time. The product of these two factors represents the total amount of freshwater the pumping station can actually extract on that day. The daily intake flow rate calculated in this way considers both the pumping station's engineering scale and dynamically reflects the time-varying impact of saline intrusion on the intake capacity, making the simulated pumping station water intake process closer to reality.

[0105] In this application, the daily freshwater intake flow rate of the water intake pumping station during the first target tidal cycle of a typical year can be determined using the above method. The figures are 100.9, 100.9, 100.9, 100.9, 88.3, ​​21, 0, 0, 0, 25.5, 42, 100.9, 100.9, 100.9, 100.9, and 100.9 million m³ respectively. 3 .

[0106] Step 140: Based on the daily water intake flow and the water demand data of each water user, the water resource allocation model is used to determine the water resource allocation amount for each water user; wherein, the water resource allocation model takes the minimum total water shortage of all water users during the scheduling period as the objective function, and solves the objective function under preset constraints.

[0107] In this embodiment of the application, the water resource allocation model determines the water resource allocation amount for each water user based on a preset river-reservoir joint regulation rule. The river-reservoir joint regulation rule includes: when the daily water intake flow of the water intake pumping station on the target day is greater than or equal to the water demand of the water user on the target day, water is supplied to the water user according to the water demand, and the surplus water is replenished to the water supply reservoir until the water supply reservoir is full; when the daily water intake flow of the water intake pumping station on the target day is less than the water demand of the water user on the target day, the entire daily water intake flow of the target day is supplied to the water user, and the insufficient part is supplemented by the water supply reservoir until the water supply reservoir is emptied to dead storage capacity.

[0108] Furthermore, the preset constraints include at least the water supply capacity constraints of the water supply project and the operating water level constraints of the reservoir; the water supply capacity constraints include the water intake pumping head constraints and the flow capacity constraints of the water transmission pipeline; the operating water level constraints of the reservoir include that the operating water level of the reservoir during the scheduling period is not lower than the dead water level and not higher than the normal storage water level.

[0109] Specifically, the joint regulation rules for the river and reservoir are as follows: Within a given calculation period, when the water intake of the pumping station exceeds the water demand of the user (water plant), the pumping station supplies water to the user according to their demand. Excess water is used to replenish the reservoir, which stores water until it reaches its normal storage level. Once full, the reservoir will not accept any further replenishment. Conversely, when the water intake of the pumping station is less than the water demand of the user (water plant), all water intake from the pumping station is supplied to the user (water plant). The remaining water demand is supplied by the reservoir, which lowers its water level until it reaches its dead storage level. After emptying the reservoir, it will no longer supply water to the user (water plant).

[0110] When the daily water intake flow of the water intake pumping station Not greater than the water demand of the user (Right now If Then the water demand of the water user is The remaining water volume of the water intake pumping station is The reservoir's water storage capacity is ,in, ;

[0111] like Then the water supply to the water user is The remaining water volume of the water intake pumping station is The reservoir's water storage capacity is The water intake pump discharge volume is ;

[0112] When the daily water intake flow of the water intake pumping station Less than the water demand of water users (Right now When ), the water supply to the user is The user's water shortage is The reservoir's replenishable water volume is The reservoir's water storage capacity is The water shortage in the reservoir is ;

[0113] in, For water users in the first Daily water demand, in volume; For the reservoir in the first The initial water storage volume at the start of the day, expressed in volume; The reservoir capacity corresponds to the normal water level of the reservoir, which is the maximum amount of water that the reservoir can store, and the unit is volume. The water supply to the water user (i.e., the water demand of the water user), that is, on the [number]th [day / month]... The actual daily water supply to users, in volume; For the water intake pumping station at the first The remaining water volume after daily water supply is the water volume remaining after subtracting the water supply to users from the daily water intake flow of the pumping station, and is expressed in volume. For the reservoir in the first The daily amount of water that can be received for reservoir replenishment is the portion of the residual water in the pumping station that can actually be stored in the reservoir. It is the smaller of the residual water volume in the pumping station and the remaining capacity of the reservoir, and the unit is volume. The reservoir's water storage capacity on the [number]th The daily water volume received after replenishment; For the water intake pumping station at the first Daily water discharge, which is the portion of the residual water in the pumping station that is forced to be discharged when the reservoir is full and can no longer receive replenishment, is expressed in volume. For water users in the first Daily water shortage is the shortfall after subtracting the water supply directly from the pumping station from the water demand of the water user, and is expressed in volume. For the reservoir in the first The daily water supply that can be supplemented to water users is the portion of water that the reservoir takes out from its own storage to make up for the water shortage of users. It is the smaller value between the water shortage of users and the available water storage of the reservoir, and the unit is volume. The dead water level corresponds to the reservoir capacity, which is the minimum amount of water that the reservoir is allowed to store during normal operation, expressed in volume. For the reservoir in the first The final daily water shortage, which is the portion of the user's water shortage that cannot be met even after reservoir replenishment, is expressed in volume.

[0114] If we need to consider the reservoir's own inflow and outflow, then the reservoir's storage capacity is: , And check again whether it exceeds or lower And restrictions are imposed, among which, This refers to the inflow of water into the reservoir. This includes losses from reservoir evaporation, seepage, and downstream ecological base flow.

[0115] Furthermore, taking the maximization of the water supply guarantee rate (minimum water shortage) for all water users during the water supply period as the objective function, and using constraints such as the flow capacity of the water supply pipeline, the pumping station head, and the upper and lower limits of the reservoir water level, a joint river-reservoir water resource allocation model is constructed. The water supply rules in this model are as follows:

[0116] No. The water user in the first The water supply during the period is ;

[0117] No. The reservoir is heading towards the first The water user in the first The water supply during the period is ;

[0118] No. The first water intake pumping station to the first The water user in the first The water supply during the period is ;

[0119] No. The first water intake pumping station to the first The reservoir in the first The water replenishment amount for the period is ;

[0120] in, For the first The reservoir in the first Water availability during the period For the first The reservoir in the first Time period to the Water supply to each water user For the first The water user in the first Water shortage during the period For the first The first water intake pumping station to the first The water user in the first Water supply during different time periods For the first The maximum storage capacity of a reservoir (generally the storage capacity corresponding to the normal water level). For the first The current capacity of each reservoir.

[0121] In this application, the water resource allocation model determines the water resource allocation amount for each water user based on a preset river-reservoir joint regulation rule. This river-reservoir joint regulation rule guides the coordinated water supply between pumping stations and reservoirs, specifically including the following two scenarios: When the daily water intake flow of the water intake pumping station on the target day is greater than or equal to the water demand of the water user on the target day, it indicates that the water intake pumping station has sufficient water. In this case, water should be supplied to the water user according to their demand to ensure that water demand is met, and the surplus water should be replenished to the water supply reservoir until the water supply reservoir is full to the normal storage level corresponding to its capacity; when the water intake pumping station... When the daily water intake flow rate on the target day is less than the water demand of the users on the target day, it indicates that the water intake pumping station is not supplying enough water. In this case, the entire daily water intake flow rate on the target day should be supplied to the users to maximize the utilization of the available fresh water on that day. The portion of the water demand that users do not meet should be supplemented by the water supply reservoir. The gap should be filled by releasing water from the reservoir until the water supply reservoir is emptied to its dead storage capacity. This forms a joint scheduling rule in which the water intake pumping station prioritizes direct water supply, and the reservoir replenishes the surplus water and supplies water to the reservoir when there is a shortage. This will enable the pumping station to fully exert the synergistic effect of fresh water replenishment and reservoir regulation during the period of saltwater intrusion.

[0122] like Figure 3 The diagram shows a simplified node representation of a river-reservoir joint regulation project in a certain area. Water source data for this area includes pumping stations A, B, C, and D, which draw water from the external river; and water supply reservoirs A, B, and C, which regulate and store water. Water users include users A, B, C, D, and E, as well as the water supply service areas corresponding to users in water supply zones A, B, and C. When the daily water intake flow of a pumping station on a target day is greater than or equal to the water demand of a user on that target day, priority should be given to... Water is supplied to users according to their water demand to ensure that their water needs are met. Excess water is replenished to the water supply reservoir until it is full to the normal storage level. When the daily water intake flow of the water intake pumping station is less than the water demand of the users on the target day, the entire daily water intake flow of the target day is supplied to the users to maximize the use of the available fresh water on that day. The water demand of the users is insufficient, and the water supply reservoir is used to make up the gap by releasing water from the reservoir until the water supply reservoir is emptied to its dead storage capacity. This forms a joint scheduling rule in which the water intake pumping station gives priority to direct water supply, and the reservoir is used to replenish water when there is excess water.

[0123] In solving the water resource allocation model, pre-set constraints must be met to ensure the feasibility of the allocation scheme in actual engineering. These pre-set constraints include at least the water supply capacity constraints of the water supply project and the operating water level constraints of the reservoir. Specifically, the water supply capacity constraints include the pumping head constraints of the intake pumping station and the flow capacity constraints of the transmission pipeline. The pumping head constraint requires that the actual pumping head, after considering head loss, does not exceed the maximum pumping head of the pumping station during water supply or reservoir replenishment to ensure normal operation. The transmission pipeline flow capacity constraint requires that the water supply or replenishment flow does not exceed the maximum allowable flow rate of the pipeline design to avoid pipeline overload. The reservoir operating water level constraint requires that the operating water level of the reservoir during the scheduling period not be lower than the dead water level and not higher than the normal storage water level. For reservoirs with flood control functions, the water level must also be controlled according to the flood season limit during the flood season to ensure the safe operation of the reservoir. By optimizing the objective function under the above constraints, a water resource allocation scheme that satisfies engineering feasibility while minimizing the risk of water shortage can be obtained.

[0124] In this embodiment, the water intake capacity of the pumping station, the regulation capacity of the reservoir, the needs of water users, and engineering constraints are combined. The water resource allocation model is used to solve the problem and achieve the scientific allocation of water resources. Compared with the existing scheduling method that relies on experience judgment, the allocation method based on the water resource allocation model can more accurately quantify the water supply guarantee level of each water user and provide a quantitative basis for formulating scheduling plans. At the same time, by integrating the river and reservoir joint regulation rules into the water resource allocation model, the optimization results naturally conform to the actual scheduling operation habits, which improves the feasibility of the allocation plan. Furthermore, by analyzing the daily changes in water supply, reservoir storage, and water shortage distribution during the scheduling period, the model provides technical support for ensuring the water supply security of estuary areas affected by saltwater intrusion.

[0125] This application provides a water resource allocation device for estuary areas, see reference. Figure 4 As shown in the embodiment of this application, the water resource allocation device for the estuary area includes:

[0126] The data acquisition module 410 is used to acquire water source data and water demand data of each water user in the target area; wherein, the water source data includes the design water intake flow rate of the water intake pumping station in the target area and the reservoir capacity data of the water supply reservoir.

[0127] The data determination module 420 is used to determine the total freshwater intake duration of the water intake pumping station within the target tidal cycle based on the inflow rate of the river section where the water intake pumping station is located within the target tidal cycle, and the correspondence between the inflow rate of the river section and the freshwater intake duration; and to determine the daily water intake flow rate of the water intake pumping station for each day within the target tidal cycle based on the total freshwater intake duration and the designed water intake flow rate.

[0128] The water resource allocation module 430 is used to determine the water resource allocation amount for each water user based on the daily water intake flow and the water demand data of each water user using a water resource allocation model. The water resource allocation model takes the minimum total water shortage of all water users during the scheduling period as the objective function and solves the objective function under preset constraints.

[0129] It should be noted that the principle of the water resource allocation device for the estuary area provided in this application embodiment to solve the technical problem is similar to the water resource allocation method for the estuary area provided in this application embodiment. Therefore, the implementation of the water resource allocation device for the estuary area provided in this application embodiment can refer to the implementation of the water resource allocation method for the estuary area provided in this application embodiment, and the repeated parts will not be described again.

[0130] After introducing the water resource allocation method and apparatus for estuary areas provided in the embodiments of this application, the electronic equipment provided in the embodiments of this application will be briefly introduced next.

[0131] See Figure 5As shown, the electronic device 500 provided in this application embodiment includes at least a processor 501, a memory 502, and a computer program stored in the memory 502 and executable on the processor 501. When the processor 501 executes the computer program, it implements the water resource allocation method for the estuary area provided in this application embodiment.

[0132] The electronic device 500 provided in this application embodiment may further include a bus 503 connecting different components (including processor 501 and memory 502). The bus 503 represents one or more types of bus structures, including memory bus, peripheral bus, local area bus, etc.

[0133] Memory 502 may include a readable storage medium in the form of volatile memory, such as random access memory (RAM) 5021 and / or cache memory 5022, and may further include read-only memory (ROM) 5023. Memory 502 may also include a program tool 5025 having a set (at least one) of program modules 5024, including but not limited to an operating subsystem, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0134] Processor 501 can be a single processing element or a collective term for multiple processing elements. For example, processor 501 can be a central processing unit (CPU) or one or more integrated circuits configured to implement the water resource allocation method for the estuary region provided in the embodiments of this application. Specifically, processor 501 can be a general-purpose processor, including but not limited to CPUs, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0135] Electronic device 500 can communicate with one or more external devices 504 (e.g., keyboard, remote control, etc.), and also with one or more devices that enable a user to interact with electronic device 500 (e.g., mobile phone, computer, etc.), and / or with devices that enable electronic device 500 to communicate with one or more other electronic devices 500 (e.g., router, modem, etc.). This communication can be performed through input / output (I / O) interface 505. Furthermore, electronic device 500 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) through network adapter 506. Figure 5 As shown, network adapter 506 communicates with other modules of electronic device 500 via bus 503. It should be understood that, although... Figure 5 As not shown, other hardware and / or software modules may be used in conjunction with the electronic device 500, including but not limited to microcode, device drivers, redundant processors, external disk drive arrays, Redundant Arrays of Independent Disks (RAID) subsystems, tape drives, and data backup storage subsystems.

[0136] It should be noted that, Figure 5 The electronic device 500 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0137] The following describes the computer-readable storage medium provided in the embodiments of this application. The computer-readable storage medium provided in the embodiments of this application stores computer instructions, which, when executed by a processor, implement the water resource allocation method for estuary areas provided in the embodiments of this application. Specifically, the computer instructions can be built into or installed in the processor, so that the processor can implement the water resource allocation method for estuary areas provided in the embodiments of this application by executing the built-in or installed computer instructions.

[0138] In addition, the water resource allocation method for estuary areas provided in this application embodiment can also be implemented as a computer program product. The computer program product includes program code, which implements the water resource allocation method for estuary areas provided in this application embodiment when running on a processor.

[0139] The computer program product provided in this application embodiment may employ one or more computer-readable storage media, which may be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination thereof. Specifically, more specific examples (a non-exhaustive list) of computer-readable storage media include electrical connections with one or more wires, portable disks, hard disks, RAM, ROM, erasable programmable read-only memory (EPROM), optical fibers, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0140] The computer program product provided in this application embodiment can be a CD-ROM and include program code, and can also run on electronic devices such as computers. However, the computer program product provided in this application embodiment is not limited thereto. In this application embodiment, the computer-readable storage medium can be any tangible medium that contains or stores program code, which can be used by or in conjunction with an instruction execution system, device, or apparatus.

[0141] It should be noted that although several units or sub-units of the device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of this application, the features and functions of two or more units described above can be embodied in one unit. Conversely, the features and functions of one unit described above can be further divided and embodied by multiple units.

[0142] Furthermore, although the operations of the method of this application are described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in that specific order, or that all the operations shown must be performed to achieve the desired result. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0143] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0144] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of the embodiments of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A method for water resource allocation in estuary areas, characterized in that, include: Acquire water source data and water demand data of each water user in the target area; wherein, the water source data includes the design water intake flow rate of the water intake pumping station and the reservoir capacity data of the water supply reservoir in the target area; Based on the inflow rate of the river section where the water intake pumping station is located during the target tidal cycle, and the correspondence between the inflow rate of the river section and the freshwater intake duration, the total freshwater intake duration of the water intake pumping station during the target tidal cycle is determined; wherein, the correspondence between the inflow rate of the river section and the freshwater intake duration is obtained by calibrating the correlation between the inflow rate of the river section during historical tidal cycles and the total freshwater intake duration during the corresponding tidal cycle: In the formula, This refers to the total freshwater intake time of the water intake pumping station within a complete tidal cycle. The average inflow rate of the river section outside the water intake pumping station during the same tidal cycle. The coefficients of the quadratic function relationship obtained through calibration of historical data; Following the principle of alternating distribution from the first and last days of the target tidal cycle towards the middle, the total desalination time is allocated to each day within the target tidal cycle, resulting in the daily desalination time of the water intake pumping station for each day; based on the daily desalination time of the water intake pumping station, the daily desalination probability for each day is determined; based on the daily desalination probability for each day and the designed water intake flow rate, the daily water intake flow rate for each day is obtained. Based on the daily water intake flow and the water demand data of each water user, a water resource allocation model is used to determine the water resource allocation amount for each water user; wherein, the water resource allocation model takes the minimum total water shortage of all water users during the scheduling period as the objective function, and solves the objective function under preset constraints.

2. The water resource allocation method for estuary areas according to claim 1, characterized in that, Based on the total desalination duration, the daily desalination duration of the water intake pumping station for each day is determined, including: The daily freshwater extraction duration distribution pattern within the target tidal cycle is obtained and calibrated; the daily freshwater extraction duration distribution pattern is obtained based on historical hydrological data of the river section where the water intake pumping station is located and the corresponding historical daily freshwater extraction duration data. Based on the daily freshwater extraction duration allocation rule, the total freshwater extraction duration within the target tidal cycle is allocated to each day within the target tidal cycle to obtain the daily freshwater extraction duration of the water intake pumping station for each day.

3. The water resource allocation method for estuary areas according to claim 1, characterized in that, The water resource allocation model determines the water resource allocation amount for each water user based on preset river-reservoir joint regulation rules; the river-reservoir joint regulation rules include: When the daily water intake flow of the water intake pumping station on the target day is greater than or equal to the water demand of the water user on the target day, water is supplied to the water user according to the water demand, and the excess water is replenished to the water supply reservoir until the water supply reservoir is full. When the daily water intake flow rate of the water intake pumping station on the target day is less than the water demand of the water user on the target day, the entire daily water intake flow rate of the target day will be supplied to the water user, and the insufficient part will be supplemented by the water supply reservoir until the water supply reservoir is emptied to dead storage capacity.

4. The water resource allocation method for estuary areas according to claim 1, characterized in that, The preset constraints include at least the water supply capacity constraints of the water supply project and the operating water level constraints of the reservoir; the water supply capacity constraints include the water intake pumping station's pumping head constraints and the water transmission pipeline's flow capacity constraints; the reservoir's operating water level constraints include the reservoir's operating water level during the scheduling period not being lower than the dead water level and not higher than the normal storage water level.

5. A water resource allocation device for estuary areas, characterized in that, include: The data acquisition module is used to acquire water source data and water demand data of each water user in the target area; wherein, the water source data includes the design water intake flow rate of the water intake pumping station and the reservoir capacity data of the water supply reservoir in the target area; The data determination module is used to determine the total freshwater extraction time of the water intake pumping station within the target tidal cycle based on the inflow rate of the river section where the pumping station is located during the target tidal cycle, and the correspondence between the inflow rate of the river section and the freshwater extraction time. The correspondence between the inflow rate of the river section and the freshwater extraction time is obtained by calibrating the correlation between the inflow rate of the river section during historical tidal cycles and the total freshwater extraction time during the corresponding tidal cycle. In the formula, This refers to the total freshwater intake time of the water intake pumping station within a complete tidal cycle. The average inflow rate of the river section outside the water intake pumping station during the same tidal cycle. The coefficients of the quadratic function relationship obtained through calibration of historical data; Following the principle of alternating distribution from the first and last days of the target tidal cycle towards the middle, the total desalination time is allocated to each day within the target tidal cycle, resulting in the daily desalination time of the water intake pumping station for each day; based on the daily desalination time of the water intake pumping station, the daily desalination probability for each day is determined; based on the daily desalination probability for each day and the designed water intake flow rate, the daily water intake flow rate for each day is obtained. The water resource allocation module is used to determine the water resource allocation amount for each water user based on the daily water intake flow and the water demand data of each water user using a water resource allocation model. The water resource allocation model takes the minimum total water shortage of all water users during the scheduling period as the objective function and solves the objective function under preset constraints.

6. An electronic device, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the water resource allocation method for the estuary area as described in any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the water resource allocation method for the estuary area as described in any one of claims 1 to 4.

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