A reservoir silt reduction dispatching method, device, equipment and medium

Abstract

The present invention relates to the field of engineering simulation, and its purpose is to provide a reservoir silt reduction scheduling method, device, equipment and medium, the method comprising: obtaining cross-sectional information of each river section in the target silt reduction river section and the target reservoir river channel, current discharge flow, historical silt reduction data, riverbed sediment particle gradation and starting flow rate of sediment with different particle sizes; analyzing each river section according to the historical silt reduction data, sediment particle gradation and starting flow rate of sediment with different particle sizes to establish a river section silt reduction database; analyzing the target discharge flow according to the cross-sectional information, current discharge flow, target silt reduction river section and river section silt reduction database; and scheduling silt reduction based on the target discharge flow. The present invention analyzes the specific conditions of different river sections, and obtains a suitable target discharge flow in combination with the situation analysis of the target silt reduction river section, which greatly improves the efficiency of sediment scheduling, thereby helping to optimize the water storage process and improve the siltation distribution in the reservoir area.

Description

Technical Field

[0001] The invention relates to the field of engineering simulation, and in particular to a reservoir silt reduction dispatching method, device, equipment and medium. Background Art

[0002] The sediment problem of large reservoirs is a worldwide problem in reservoir construction and operation, which directly affects the life of the reservoir, the flooding of the reservoir area, the evolution of the waterway and port area at the end of the reservoir, and the normal operation of the ship lock and power station in the dam area. In order to solve the problem of sedimentation in reservoirs, the concepts of reducing sedimentation such as storing clear water and discharging turbid water and discharging sediment by density flow were determined, and targeted water and sediment regulation experiments were carried out. The regulating storage capacity of the reservoir was used to store and release the runoff and sediment of the river in a timely manner, coordinate the relationship between water and sediment, facilitate the transport of sediment in the river channel, reduce sedimentation in the reservoir area, and take into account the benefits of the reservoir.

[0003] Existing technologies usually simulate the evolution of water and sediment in a river channel by establishing a water-sediment model. Its advantage is that the simulation accuracy is high and it can better describe the changes in river channel topography. However, with the impact of human activities and natural climate change, the amount of water and sediment entering the reservoir has changed significantly. New demands such as downstream water replenishment during the dry season have brought new demands for reservoirs to optimize the water storage process and improve the distribution of siltation in the reservoir area. However, the water-sediment model has many parameters and is complex to solve, with low calculation efficiency. It is impossible to quickly simulate the outflow flow from the reservoir and it is difficult to meet the high-frequency reservoir sediment scheduling requirements. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides a reservoir silt reduction scheduling method, device, equipment and medium to solve the problem that the existing technology is inefficient through sand table simulation and is difficult to meet the reservoir sediment scheduling needs.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] An embodiment of the present invention provides a reservoir silt reduction scheduling method, comprising:

[0007] Obtain the cross-sectional information of the target silt reduction river section and each river section in the target reservoir river channel, the current discharge flow, historical silt reduction data, the sediment particle size distribution of the riverbed, and the starting flow rate of sediments with different particle sizes;

[0008] Analyze each river section according to the historical silt reduction data, silt particle size distribution and the starting flow rate of silt with different particle sizes to establish a river section silt reduction database;

[0009] Analyze the target discharge flow according to the section information, the current discharge flow, the target siltation reduction river section and the siltation reduction database of the river section;

[0010] Sediment reduction scheduling is performed based on the target downstream flow rate.

[0011] Optionally, the step of analyzing each river section according to the historical silt reduction data, silt particle size distribution and the starting flow rate of silt with different particle sizes to establish a river section silt reduction database includes:

[0012] Analyzing the sediment starting flow velocity of each river section according to the sediment particle gradation of each river section and the starting flow velocity of sediments with different particle sizes;

[0013] Extracting sediment transport ratios and sediment reduction data corresponding to different flow rates from the historical sediment reduction data;

[0014] Analyze the silt reduction flow rate interval of each river section through the sediment transport ratio and the silt reduction data;

[0015] A river section siltation reduction database is established based on the sediment starting velocity and siltation reduction velocity interval corresponding to each river section.

[0016] Optionally, analyzing the target downstream flow rate according to the section information, the current downstream flow rate, the target siltation reduction river section and the river section siltation reduction database includes:

[0017] Extracting a corresponding siltation reduction flow rate interval from the river section siltation reduction database according to the target siltation reduction river section;

[0018] Analyzing the downstream flow interval based on the silt reduction flow rate interval;

[0019] Analyze each river section through the cross-section information and the downstream flow interval to obtain status information of each river section under different downstream flow conditions;

[0020] A target downstream flow rate is selected from the downstream flow rate interval according to the state information.

[0021] Optionally, analyzing the downstream flow interval based on the silt reduction flow rate interval includes:

[0022] Calculating the silting flow interval according to the cross-section information corresponding to the target silting reduction river section and the silting reduction flow velocity interval;

[0023] Based on the flushing and silting flow data in the flushing and silting flow interval, parameter inversion is performed on a preset hydrodynamic model to obtain a downstream flow interval.

[0024] Optionally, the analyzing each river section through the cross-section information and the downstream flow interval to obtain the state information of each river section under different downstream flow conditions includes:

[0025] Extracting the water-passing cross-sectional area of ​​each river section from the cross-sectional information;

[0026] Dividing the downstream flow interval according to a preset flow interval to obtain a plurality of downstream flow values;

[0027] Input the current downstream flow and the cross-sectional area of ​​the water flow into a preset hydrodynamic model to obtain the current flow velocity of each river section;

[0028] Input the downstream flow value and the cross-sectional area of ​​water flow into a preset hydrodynamic model to obtain the water flow velocity of each river section;

[0029] The current flow velocity of each river section is compared with the water flow velocity corresponding to different downstream flow values ​​to obtain the status information of each river section at different downstream flow values.

[0030] Optionally, the state information includes a siltation state and a scouring state, and the current flow velocity of each river section is compared with the water flow velocity corresponding to different downstream flow values ​​to obtain the state information of each river section at different downstream flow values, including:

[0031] When the water flow velocity corresponding to the current downstream flow value of the current river section is less than or equal to the starting flow velocity, determining that the section of the current river section corresponding to the current downstream flow value is in a silting state;

[0032] When the water flow velocity corresponding to the current downstream flow value of the current river section is greater than the starting flow velocity, it is determined that the section of the current river section corresponding to the current downstream flow value is in a scouring state.

[0033] Optionally, selecting a target downstream flow rate from the downstream flow rate interval according to the state information includes:

[0034] Based on the state information of all river sections corresponding to each downstream flow value, a plurality of downstream flow values ​​to be selected in which all river sections are in a flushing state are obtained;

[0035] The minimum value is selected from the candidate downstream flow values ​​as the target downstream flow.

[0036] The embodiment of the present invention further provides a reservoir silt reduction dispatching device, comprising:

[0037] The acquisition module is used to obtain the cross-sectional information of the target silt reduction river section and each river section in the target reservoir river channel, the current discharge flow, the historical silt reduction data, the sediment particle size distribution of the riverbed and the starting flow rate of sediments with different particle sizes;

[0038] Establishing a module, for analyzing each river section according to the historical silt reduction data, the silt particle size distribution and the starting flow rate to establish a river section silt reduction database;

[0039] An analysis module, used for analyzing the target downstream flow rate according to the section information, the current downstream flow rate, the target siltation reduction river section and the river section siltation reduction database;

[0040] A scheduling module is used to perform sediment reduction scheduling based on the target downstream flow rate.

[0041] An embodiment of the present invention further provides an electronic device, including:

[0042] A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the reservoir silt reduction scheduling method provided by an embodiment of the present invention by executing the computer instructions.

[0043] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the reservoir silt reduction scheduling method provided by the embodiment of the present invention.

[0044] The technical solution of the present invention has the following advantages:

[0045] The present invention provides a reservoir silt reduction scheduling method, which obtains the cross-sectional information of the target silt reduction river section and each river section in the target reservoir river channel, the current discharge flow, the historical silt reduction data, the sediment particle gradation of the riverbed and the starting flow rate of sediments with different particle sizes; analyzes each river section according to the historical silt reduction data, the sediment particle gradation and the starting flow rate of sediments with different particle sizes to establish a river section silt reduction database; analyzes the target discharge flow according to the cross-sectional information, the current discharge flow, the target silt reduction river section and the river section silt reduction database; and performs silt reduction scheduling based on the target discharge flow. The present invention analyzes the specific conditions of different river sections, and obtains a suitable target discharge flow in combination with the situation analysis of the target silt reduction river section, which greatly improves the efficiency of sediment scheduling, thereby helping to optimize the water storage process and improve the siltation distribution in the reservoir area. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0047] Figure 1 It is a flow chart of the reservoir silt reduction scheduling method in an embodiment of the present invention;

[0048] Figure 2 A flow chart of analyzing each river section and establishing a river section silt reduction database according to an embodiment of the present invention;

[0049] Figure 3 A flow chart of analyzing target downstream flow according to an embodiment of the present invention;

[0050] Figure 4It is a flow chart of analyzing the downstream flow interval based on the silt reduction flow velocity interval according to an embodiment of the present invention;

[0051] Figure 5 A flowchart of analyzing each river section to obtain state information of each river section under different downstream flow conditions according to an embodiment of the present invention;

[0052] Figure 6 A flowchart of obtaining status information of each river section at different downstream flow values ​​according to an embodiment of the present invention;

[0053] Figure 7 A flowchart of selecting a target downstream flow rate from a downstream flow rate interval by using state information according to an embodiment of the present invention;

[0054] Figure 8 It is a structural schematic diagram of a reservoir silt reduction dispatching device in an embodiment of the present invention;

[0055] Fig. 9 Schematic diagram of the structure of an electronic device in an embodiment of the present invention. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0057] According to an embodiment of the present invention, an embodiment of a reservoir silt reduction scheduling method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0058] In this embodiment, a reservoir silt reduction scheduling method is provided, which can be used for the above-mentioned terminal equipment, such as a computer, etc. Figure 1 As shown, the reservoir silt reduction scheduling method includes the following steps:

[0059] Step S1: Obtain the cross-sectional information of the target silt reduction river section and each river section in the target reservoir river channel, the current downstream flow, historical silt reduction data, the sediment particle gradation of the riverbed, and the starting flow rate of sediment of different particle sizes. Specifically, sediment gradation refers to the distribution of the particle sizes of sediment particles at different levels in the sand sample, which can reflect the coarseness and uniformity of the sand sample particle size. When the downstream flow rate increases, the greater the water flow rate, the stronger the ability to carry sediment. When the water flow rate is not enough to carry away the sediment, it may cause siltation.

[0060] Step S2: Analyze each river section according to the historical silt reduction data, sediment particle grading and the starting flow rate of sediments with different particle sizes to establish a river section silt reduction database. Specifically, the historical silt reduction data contains the sediment transport ratio of each river section at different flow rates and the flow rate data that can achieve the silt reduction effect. The sediment transport ratio refers to the ratio of the total sediment transport through a certain section of the river to the total erosion of the basin above the section within a certain period of time, which can reflect the change in sediment transport and deposition along the way. By establishing a river section silt reduction database, the sediment information of the corresponding river section can be quickly screened out in the subsequent analysis of the discharge flow, thereby improving the analysis efficiency.

[0061] Step S3: Analyze the target discharge flow rate according to the section information, the current discharge flow rate, the target siltation reduction river section and the river section siltation reduction database. Specifically, the siltation of the river section under different flow rates is calculated through the section information and the current discharge flow rate, so as to analyze the appropriate target discharge flow rate.

[0062] Step S4: Perform sediment reduction scheduling based on the target downstream flow rate.

[0063] Through the above steps S1 to S4, the reservoir silt reduction scheduling method provided by the embodiment of the present invention analyzes the specific conditions of different river sections and obtains a suitable target downstream flow rate in combination with the situation analysis of the target silt reduction river section, thereby greatly improving the sediment scheduling efficiency, thereby helping to optimize the water storage process and improve the siltation distribution in the reservoir area.

[0064] Specifically, in one embodiment, the above step S2, such as Figure 2 As shown, the specific steps include:

[0065] Step S21: Analyze the sediment starting flow rate of each river section according to the sediment particle gradation of each river section and the starting flow rate of sediment with different particle sizes. Specifically, sediment gradation refers to the distribution of the particle sizes of sediment particles in the sand sample. The starting flow rate of sediment in each section is affected by the sediment particle gradation. Since the sediment with large particle size has a large weight, the stability and drag force of the particles are greater than those of small particle size sediment, and the required starting flow rate is also large, the proportion of large particle size sediment will affect the sediment starting flow rate. By analyzing the sediment particle gradation of different river sections, the sediment starting flow rate corresponding to different river sections can be accurately obtained, which makes the subsequent analysis more accurate.

[0066] Step S22: Extract sediment transport ratios and sediment reduction data corresponding to different flow rates from historical sediment reduction data. Specifically, the sediment transport ratio can reflect the change in sediment transport and deposition along the way, and the sediment reduction data is the impact of different downstream flow rates on sediment reduction, as well as the flow rate data that can achieve the sediment reduction effect.

[0067] Step S23: Analyze the silt reduction flow rate interval of each river section through the sediment transport ratio and the silt reduction data. Specifically, through the sediment deposition changes and the flow rate data that can achieve the silt reduction effect, the silt reduction flow rate interval range that can achieve the scouring effect can be obtained. Each river section can achieve the scouring and silt reduction effect within the corresponding flow rate interval range.

[0068] Step S24: Establish a river section silt reduction database based on the silt start-up velocity and silt reduction velocity interval corresponding to each river section. Specifically, since the silt in each river section may change with the water flow and time, the silt particle gradation and historical data can be re-acquired according to the preset time interval to update the data in the silt reduction database. The silt situation of each river section can also be predicted by the silt transport ratio, so as to analyze the silt reduction velocity interval of each river section according to the predicted data. At the same time, the river sections can be analyzed for similarity according to the silt particle gradation, and the river sections with high similarity can be grouped. The same group of river sections use a common silt start-up velocity and silt reduction velocity interval, which reduces the data storage capacity of the database and improves the data screening speed.

[0069] Specifically, in one embodiment, the above step S3, as Figure 3 As shown, the specific steps include:

[0070] Step S31: extracting the corresponding siltation reduction flow velocity interval from the river section siltation reduction database according to the target siltation reduction river section.

[0071] Step S32: Analyze the downstream flow interval based on the silt reduction flow rate interval. Specifically,

[0072] Step S33: Analyze each river section through cross-section information and downstream flow interval to obtain status information of each river section under different downstream flow conditions.

[0073] Step S34: Select the target downstream flow rate from the downstream flow rate interval according to the state information.

[0074] Specifically, in one embodiment, the above step S32 is as follows: Figure 4 As shown, the specific steps include:

[0075] Step S321: Calculate the silt flushing flow interval according to the cross-section information corresponding to the target silt reduction river section and the silt reduction flow velocity interval. Specifically, the optimal flow velocity interval for silt reduction [v下 , v 上 ] and the corresponding sediment transport ratio, combined with the cross-sectional area S, the cross-sectional scouring and silting flow interval is obtained as [Q 下 =S / v 下 , Q 上 =S / v 上 ].

[0076] Step S322: Parameter inversion is performed on the preset hydrodynamic model based on the flushing and silting flow data in the flushing and silting flow interval to obtain the discharge flow interval. Specifically, the preset hydrodynamic model is a one-dimensional hydrodynamic equation model of the reservoir, wherein the hydrodynamic equation is:

[0077] Continuity equation for water flow:

[0078] The equation of motion for water flow is:

[0079] Among them, t represents time, x represents space, B represents water surface width, Z represents water level, Q represents flow rate, and q represents water volume. L is the lateral inflow flow on this river section, u is the average flow velocity of the section, g is the gravitational acceleration, A is the cross-sectional area of ​​the water flow, n is the roughness value of the river channel, and R is the hydraulic radius.

[0080] The discharge flow range of the dam [Q1, Q2] is obtained by inverting the preset hydrodynamic model based on the scouring and silting flow range.

[0081] Specifically, in one embodiment, the above step S33 is as follows: Figure 5 As shown, the specific steps include:

[0082] Step S331: extracting the cross-sectional area of ​​each river section from the cross-sectional information. Specifically, the cross-sectional area of ​​each river section is the area enclosed by the water surface line and the river bottom line at the river section perpendicular to the water flow direction.

[0083] Step S332: Divide the downstream flow interval according to the preset flow interval to obtain multiple downstream flow values. Specifically, since the downstream flow interval is an interval range, in order to obtain the closest appropriate downstream flow value, it is necessary to divide it and then verify each value. The preset flow interval can be adjusted according to the accuracy requirement. The higher the accuracy requirement, the smaller the preset flow interval, and the more downstream flow values ​​are obtained.

[0084] Step S333: Input the current downstream flow and cross-sectional area into the preset hydrodynamic model to obtain the current flow velocity of each river section. Specifically, calculate the current flow velocity v 现 Used to compare the flow rate after changing the downstream flow rate.

[0085] Step S334: Input the downstream flow value and the cross-sectional area into the preset hydrodynamic model to obtain the flow velocity of each river section. Specifically, the flow data can be obtained through the downstream flow and the preset hydrodynamic model, and the flow velocity v of the cross-sectional area is x = flow rate / water flow cross-sectional area.

[0086] Step S335: respectively compare the current flow velocity of each river section with the water flow velocity corresponding to different downstream flow values ​​to obtain the status information of each river section at different downstream flow values.

[0087] Specifically, after changing the discharge flow, the corresponding water flow velocity of each river section will change accordingly. The increase in water flow will increase the scouring of silt and play a role in reducing siltation. However, since there are requirements for the discharge flow, in reality the discharge flow will not be increased continuously due to siltation reduction. The discharge flow needs to be controlled within a certain range. Therefore, while being able to achieve the purpose of siltation reduction, the smaller the discharge flow is within the range, the greater the scheduling space left for the dispatching personnel based on other considerations, and the better the effect.

[0088] Specifically, in one embodiment, the above step S335, as Figure 6 As shown, the specific steps include:

[0089] Step S3351: when the water flow velocity corresponding to the current downstream flow value of the current river section is less than or equal to the starting flow velocity, it is determined that the section corresponding to the current downstream flow value of the current river section is in a siltation state.

[0090] Step S3352: when the water flow velocity corresponding to the current downstream flow value of the current river section is greater than the starting flow velocity, it is determined that the section corresponding to the current downstream flow value of the current river section is in a scouring state.

[0091] Specifically, after the discharge flow is changed, the flow velocity of each river section changes, and each river section is affected differently, and the change in flow velocity is different; when the flow velocity of a river section becomes smaller, the ability to carry sediment is weak, and siltation may occur. The status of each river section can be marked, for example, the river section in the expected state is marked in red, and the river section in the scouring state is marked in green, which is convenient for dispatchers to observe.

[0092] Specifically, in one embodiment, the above step S34, such as Figure 7 As shown, the specific steps include:

[0093] Step S341: Screening is performed based on the status information of all river sections corresponding to each downstream flow value to obtain a plurality of downstream flow values ​​to be selected in which all river sections are in a flushing state.

[0094] Step S342: Select the minimum value from the downstream flow values ​​to be selected as the target downstream flow.

[0095] Specifically, after changing the discharge flow, the corresponding water flow velocity of each river section will change accordingly. The increase in water flow will increase the scouring of silt and play a role in reducing siltation. However, since there are requirements for the discharge flow, in reality the discharge flow will not be increased continuously due to siltation reduction. The discharge flow needs to be controlled within a certain range. Therefore, while being able to achieve the purpose of siltation reduction, the smaller the discharge flow is within the range, the greater the scheduling space left for the dispatching personnel based on other considerations, and the better the effect.

[0096] Specifically, in one embodiment, the above-mentioned step S34 further includes: judging the status information of all river sections corresponding to each downstream flow value, and if all river sections except the target siltation reduction river section are in a siltation state, selecting the maximum value from the downstream flow values ​​as the target downstream flow.

[0097] Specifically, since the discharge flow is calculated based on the silt reduction flow rate interval of the target silt reduction river section, each discharge flow value can achieve the silt reduction effect in the target silt reduction river section. However, since the discharge flow has different effects on the flow velocity of each river section, it may cause siltation in other river sections. While achieving the silt reduction effect in the target silt reduction river section, it is necessary to reduce the siltation of other river sections as much as possible. Within the range of the discharge flow interval, the larger the discharge flow, the faster the water flow velocity, and the weaker the siltation effect. Therefore, if all river sections except the target silt reduction river section are in a siltation state, the maximum value from the discharge flow values ​​is selected as the target discharge flow.

[0098] In this embodiment, a reservoir silt reduction dispatching device is also provided, which is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware of a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0099] This embodiment provides a reservoir silt reduction dispatching device, such as Figure 8 As shown, including:

[0100] The acquisition module 101 is used to obtain the cross-sectional information of the target silt reduction river section and each river section in the target reservoir river channel, the current discharge flow, the historical silt reduction data, the sediment particle grading of the riverbed and the starting flow rate of sediments of different particle sizes. For details, please refer to the relevant description of step S1 in the above method embodiment, which will not be repeated here.

[0101] Establishing module 102 is used to analyze each river section according to historical silt reduction data, sediment particle grading and starting flow rate to establish a river section silt reduction database. For details, please refer to the relevant description of step S2 in the above method embodiment, which will not be repeated here.

[0102] The analysis module 103 is used to analyze the target downstream flow according to the section information, the current downstream flow, the target silt reduction river section and the river section silt reduction database. For details, please refer to the relevant description of step S3 in the above method embodiment, which will not be repeated here.

[0103] The scheduling module 104 is used to perform sediment reduction scheduling based on the target downstream flow rate. For details, please refer to the relevant description of step S4 in the above method embodiment, which will not be repeated here.

[0104] The reservoir silt reduction scheduling device in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0105] The further functional description of each of the above modules is the same as that of the above corresponding embodiments and will not be repeated here.

[0106] According to an embodiment of the present invention, there is also provided an electronic device, such as Fig. 9 As shown, the electronic device may include a processor 901 and a memory 902, wherein the processor 901 and the memory 902 may be connected via a bus or other means. Fig. 9 The example of connecting through bus is taken in the following.

[0107] The processor 901 may be a central processing unit (CPU). The processor 901 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or a combination of the above chips.

[0108] The memory 902 is a non-transitory computer-readable storage medium that can be used to store non-transitory software programs, non-transitory computer executable programs and modules, such as program instructions / modules corresponding to the methods in the method embodiments of the present invention. The processor 901 executes various functional applications and data processing of the processor by running the non-transitory software programs, instructions and modules stored in the memory 902, that is, implementing the methods in the above method embodiments.

[0109] The memory 902 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required by at least one function; the data storage area may store data created by the processor 901, etc. In addition, the memory 902 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some embodiments, the memory 902 may optionally include a memory remotely arranged relative to the processor 901, and these remote memories may be connected to the processor 901 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0110] One or more modules are stored in the memory 902 , and when executed by the processor 901 , the method in the above method embodiment is executed.

[0111] The specific details of the above electronic device can be understood by referring to the corresponding descriptions and effects in the above method embodiments, and will not be repeated here.

[0112] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium can be a disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD), etc.; the storage medium can also include a combination of the above-mentioned types of memory.

[0113] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A reservoir silt reduction dispatching method, characterized in that: include: Obtain the cross-sectional information of the target silt reduction river section and each river section in the target reservoir river channel, the current discharge flow, historical silt reduction data, the sediment particle size distribution of the riverbed, and the starting flow velocity of sediments with different particle sizes; the historical silt reduction data includes the sediment transport ratio of each river section at different flow velocities and the flow velocity data that can achieve the silt reduction effect; Analyze each river section according to the historical silt reduction data, silt particle size distribution and the starting flow rate of silt with different particle sizes to establish a river section silt reduction database; Analyze the target discharge flow according to the section information, the current discharge flow, the target siltation reduction river section and the siltation reduction database of the river section; Perform sediment reduction scheduling based on the target discharge flow; According to the historical silt reduction data, the silt particle size distribution and the starting flow rate of silt with different particle sizes, each river section is analyzed to establish a river section silt reduction database, including: Analyzing the sediment starting flow velocity of each river section according to the sediment particle gradation of each river section and the starting flow velocity of sediments with different particle sizes; Extracting sediment transport ratios and sediment reduction data corresponding to different flow rates from the historical sediment reduction data; Analyze the silt reduction flow rate interval of each river section through the sediment transport ratio and the silt reduction data; Establish a river section silt reduction database based on the sediment starting velocity and silt reduction velocity interval corresponding to each river section; The analyzing the target downstream flow rate according to the section information, the current downstream flow rate, the target silt reduction river section and the river section silt reduction database includes: Extracting a corresponding siltation reduction flow rate interval from the river section siltation reduction database according to the target siltation reduction river section; Analyzing the downstream flow interval based on the silt reduction flow rate interval; Analyze each river section through the cross-section information and the downstream flow interval to obtain status information of each river section under different downstream flow conditions; A target downstream flow rate is selected from the downstream flow rate interval according to the state information.

2. The reservoir silt reduction dispatching method according to claim 1, characterized in that: The analyzing the downstream flow interval based on the silt reduction flow velocity interval includes: Calculating the silting flow interval according to the cross-section information corresponding to the target silting reduction river section and the silting reduction flow velocity interval; Based on the flushing and silting flow data in the flushing and silting flow interval, parameter inversion is performed on a preset hydrodynamic model to obtain a downstream flow interval.

3. The reservoir silt reduction dispatching method according to claim 1, characterized in that: By analyzing each river section through the cross-section information and the downstream flow interval, the state information of each river section under different downstream flow conditions is obtained, including: Extracting the water-passing cross-sectional area of ​​each river section from the cross-sectional information; Dividing the downstream flow interval according to a preset flow interval to obtain a plurality of downstream flow values; Input the current downstream flow and the cross-sectional area of ​​the water flow into a preset hydrodynamic model to obtain the current flow velocity of each river section; Input the downstream flow value and the cross-sectional area of ​​water flow into a preset hydrodynamic model to obtain the water flow velocity of each river section; The current flow velocity of each river section is compared with the water flow velocity corresponding to different downstream flow values ​​to obtain the status information of each river section at different downstream flow values.

4. The reservoir silt reduction dispatching method according to claim 3, characterized in that: The state information includes a siltation state and a scouring state. The current flow velocity of each river section is compared with the water flow velocity corresponding to different downstream flow values ​​to obtain the state information of each river section at different downstream flow values, including: When the water flow velocity corresponding to the current downstream flow value of the current river section is less than or equal to the starting flow velocity, determining that the section of the current river section corresponding to the current downstream flow value is in a silting state; When the water flow velocity corresponding to the current downstream flow value of the current river section is greater than the starting flow velocity, it is determined that the section of the current river section corresponding to the current downstream flow value is in a scouring state.

5. The reservoir silt reduction dispatching method according to claim 4, characterized in that: The selecting a target downstream flow rate from the downstream flow rate interval according to the state information includes: Based on the state information of all river sections corresponding to each downstream flow value, a plurality of downstream flow values ​​to be selected in which all river sections are in a flushing state are obtained; The minimum value is selected from the candidate downstream flow values ​​as the target downstream flow.

6. A reservoir silt reduction dispatching device, characterized in that: include: The acquisition module is used to obtain the cross-sectional information of the target silt reduction river section and each river section in the target reservoir river channel, the current discharge flow, the historical silt reduction data, the sediment particle size distribution of the riverbed and the starting flow velocity of sediments with different particle sizes; the historical silt reduction data includes the sediment transport ratio of each river section at different flow velocities and the flow velocity data that can achieve the silt reduction effect; Establishing a module, for analyzing each river section according to the historical silt reduction data, the silt particle gradation and the starting flow rate to establish a river section silt reduction database; analyzing each river section according to the historical silt reduction data, the silt particle gradation and the starting flow rate of the silt with different particle sizes to establish a river section silt reduction database, including: analyzing the silt starting flow rate of each river section according to the silt particle gradation of each river section and the starting flow rate of the silt with different particle sizes; extracting the silt transport ratio and silt reduction data corresponding to different flow rates from the historical silt reduction data; analyzing the silt reduction flow rate interval of each river section through the silt transport ratio and the silt reduction data; establishing a river section silt reduction database based on the silt starting flow rate and silt reduction flow rate interval corresponding to each river section; An analysis module is used to analyze the target downstream flow according to the section information, the current downstream flow, the target siltation reduction river section and the river section siltation reduction database; the analysis of the target downstream flow according to the section information, the current downstream flow, the target siltation reduction river section and the river section siltation reduction database includes: extracting the corresponding siltation reduction flow rate interval from the river section siltation reduction database according to the target siltation reduction river section; analyzing the downstream flow rate interval based on the siltation reduction flow rate interval; analyzing each river section through the section information and the downstream flow rate interval to obtain the state information of each river section under different downstream flow conditions; selecting the target downstream flow from the downstream flow interval according to the state information; A scheduling module is used to perform sediment reduction scheduling based on the target downstream flow rate.

7. An electronic device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the reservoir silt reduction scheduling method according to any one of claims 1 to 5 by executing the computer instructions.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the reservoir silt reduction scheduling method according to any one of claims 1-5.

Images