Sewage and waterlogging coordinated pipe network outlet overflow control method, system, device and medium

Abstract

The embodiments of the present application provide a sewage and waterlogging coordinated pipe network outlet overflow control method, system, device and medium, which relates to the sewage and waterlogging coordinated pipe network outlet overflow control technology field, the method includes: obtaining the drainage and waterlogging prevention parameters of the service area corresponding to the pipe network outlet and the water quality control parameters of the drainage area; determining the total water flow of the service area according to the drainage and waterlogging prevention parameters, and determining the total distribution flow that the pipe network outlet should control based on the total water flow; determining the runoff control parameters corresponding to the service area based on the water quality control parameters, and determining the total peak flow that the pipe network outlet should control based on the runoff control parameters; determining the target control flow of the sewage and waterlogging coordinated pipe network outlet overflow according to the total distribution flow and the total peak flow. This method not only takes into account the water environment target control requirements of the drainage area, but also integrates the drainage and waterlogging target requirements in the service area, and realizes the dual coupling of the water quality and water quantity targets of the pipe network.

Description

Technical Field

[0001] The present application relates to the technical field of overflow control of pipe network outlets, and in particular to a sewage-waterlogging coordinated pipe network outlet overflow control method, system, device and medium. Background Art

[0002] In the construction of sponge cities and urban drainage and flood control, by regulating the outlet flow of the pipe network and effectively controlling the runoff flow, the drainage and flood control capacity of the city can be significantly improved and the safety of urban drainage can be ensured. At the same time, by regulating the runoff flow, pollutants in runoff rainwater / combined sewer overflow can be intercepted, removed and purified, which can effectively reduce the pollution of initial rainwater and combined sewer overflow to urban water bodies and ensure the quality of urban water environment.

[0003] However, the current determination of pipeline outlet flow mainly focuses on improving the water environment. Due to the influence of climate, drainage and flood prevention issues are becoming increasingly prominent. Therefore, it is urgent to regulate the overflow of pipeline outlets under the dual goals of improving the water environment and drainage and flood prevention. Summary of the invention

[0004] The embodiments of the present application provide a sewage and waterlogging coordinated pipe network outlet overflow control method, system, device and medium, which not only take into account the water environment target control requirements of the drainage area, but also integrate the drainage and waterlogging prevention target requirements in the service area, and realize the dual coupling of pipe network water quality and quantity targets. The problem of rainwater volume and rainwater runoff pollution control is solved through sewage and waterlogging coordinated pipe network outlet overflow control, which provides a reference for control engineering.

[0005] In a first aspect, an embodiment of the present application provides a sewage and waterlogging coordinated pipe network outlet overflow control method, comprising:

[0006] Obtain the drainage and flood control parameters of the service area corresponding to the outlet of the pipe network and the water quality control parameters of the drainage area;

[0007] Determine the total water flow of the service area according to the drainage and flood prevention parameters, and determine the total distribution flow that should be controlled by the pipe network outlet based on the total water flow;

[0008] Determine the runoff control parameter corresponding to the service area based on the water quality control parameter, and determine the total peak flow that should be controlled by the outlet of the pipe network based on the runoff control parameter;

[0009] The target control flow of the pipe network outlet is determined according to the total distributed flow and the total peak flow.

[0010] In a possible implementation manner, determining the total water flow of the service area according to the drainage and flood prevention parameters, and determining the total distribution flow that should be controlled by the pipe network outlet based on the total water flow, includes:

[0011] Determine the total water flow and allowable water accumulation flow of the service area according to the drainage and flood control parameters;

[0012] Determine the existing drainage flow of the pumping station and the pipe network according to the drainage capacity of the existing pumping station and the pipe network in the service area;

[0013] According to the total water flow, the allowable water accumulation flow and the existing drainage flow, the total distribution flow that the pipe network outlet should control is determined, and the total distribution flow is the difference between the total water flow and the sum of the existing drainage flow and the allowable water accumulation flow.

[0014] In a possible implementation, determining a runoff control parameter corresponding to the service area based on the water quality control parameter, and determining a total peak flow rate that should be controlled at the outlet of the pipe network based on the runoff control parameter, includes:

[0015] According to the water quality control parameters, based on steady-state mass balance analysis, determine the water environment capacity of the target pollutants in the drainage area;

[0016] According to the water environment capacity of the target pollutant, the pollutant load is distributed to the outlet of the pipe network to obtain a pollutant load distribution result;

[0017] Determining the runoff control parameters corresponding to the service area according to the pollutant load distribution result;

[0018] Based on the runoff control parameters, the total peak flow rate that should be controlled at the outlet of the pipe network is determined.

[0019] In a possible implementation manner, the number of the pipe network outlet is at least one, the runoff control parameter includes a rainfall control parameter, and determining the total peak flow that should be controlled by the pipe network outlet based on the runoff control parameter includes:

[0020] According to the rainfall control parameter, simulate and calculate a first peak flow corresponding to the at least one pipe network outlet;

[0021] A total peak flow is determined according to the first peak flows, where the total peak flow is the sum of the first peak flows.

[0022] In a possible implementation manner, determining the target control flow rate of the outlet of the pipe network according to the total allocated flow rate and the total peak flow rate includes:

[0023] Determining whether the total allocated flow is greater than the total peak flow;

[0024] If yes, then determine the target control flow of the pipe network outlet according to the total allocated flow and the weighted average, wherein the weighted average is the average of the flow weights of the pipe network outlet under multiple different rainfall return periods;

[0025] If not, the first peak flow rate is used as the target control flow rate corresponding to the outlet of the pipe network.

[0026] In a possible implementation manner, determining the target control flow of the pipe network outlet according to the total allocated flow and the weighted average value includes:

[0027] Determine a second peak flow rate of the at least one pipe network outlet under a plurality of different rainfall return periods, and determine a weight corresponding to the second peak flow rate;

[0028] Determine a weight mean value corresponding to the at least one pipe network outlet according to the weight, wherein the weight mean value is an average of flow weight values ​​of each pipe network outlet under different rainfall return periods;

[0029] The target control flow of the pipe network outlet is determined according to the total allocated flow and the weighted average.

[0030] In a possible implementation, the method further includes: dynamically adjusting the target control flow of the pipe network outlet according to the distribution parameters of the pipe network outlet and the diffusion flow pattern of water pollutants in the target river or lake.

[0031] In a second aspect, an embodiment of the present application provides a sewage-waterlogging coordinated pipe network outlet overflow control system, the system comprising: a storage device, a sewage treatment device, a control gate, a control pipeline, a control device, and a discharge pipeline;

[0032] Wherein, the memory stores computer-executable instructions;

[0033] The sewage treatment device executes the computer-executable instructions stored in the memory, so that the sewage treatment device executes the first aspect and various possible implementation methods of the first aspect as described above;

[0034] The regulating gate is used to control the overflow flow into the river or lake based on the target regulating flow, so that the overflow flow is transmitted to the regulating device through the regulating pipeline;

[0035] The control device is used to perform water treatment on the overflow flow, and the water treatment includes at least one of the following: storage, treatment and purification;

[0036] The overflow flow after water treatment is discharged into rivers and lakes through the discharge pipe.

[0037] In a third aspect, the present application provides a sewage and flood coordinated pipe network outlet overflow control device, comprising:

[0038] An acquisition module is used to obtain the drainage and flood control parameters of the service area corresponding to the outlet of the pipe network and the water quality control parameters of the drainage area;

[0039] A processing module, used to determine the total water flow of the service area according to the drainage and flood prevention parameters, and determine the total distribution flow that should be controlled by the outlet of the pipe network based on the total water flow;

[0040] The processing module is further used to determine the runoff control parameter corresponding to the service area based on the water quality control parameter, and determine the total peak flow that should be controlled by the outlet of the pipe network based on the runoff control parameter;

[0041] A determination module determines a target control flow rate of the pipe network outlet according to the total allocated flow rate and the total peak flow rate.

[0042] In one possible implementation, the processing module is also used to determine the total water flow and the allowable water accumulation flow of the service area based on the drainage and flood control parameters; determine the existing drainage flow of the pump station and the pipeline network based on the drainage capacity of the existing pump station and the pipeline network in the service area; determine the total distribution flow that should be controlled by the pipeline outlet based on the total water flow, the allowable water accumulation flow and the existing drainage flow, and the total distribution flow is the difference between the total water flow and the sum of the existing drainage flow and the allowable water accumulation flow.

[0043] In one possible implementation, the processing module is also used to determine the target pollutant water environment capacity of the drainage area based on the steady-state mass balance analysis according to the water quality control parameters; distribute the pollutant load to the pipe network outlet according to the target pollutant water environment capacity to obtain the pollutant load distribution result; determine the runoff control parameters corresponding to the service area according to the pollutant load distribution result; and determine the total peak flow that should be controlled at the pipe network outlet based on the runoff control parameters.

[0044] In a possible implementation, the number of pipe network outlets is at least one, the runoff control parameter includes a rainfall control parameter, and the processing module is further used to simulate and calculate the first peak flow corresponding to the at least one pipe network outlet according to the rainfall control parameter; determine the total peak flow according to the first peak flow, and the total peak flow is the sum of the first peak flows.

[0045] In one possible implementation, the determination module is also used to determine whether the total allocated flow is greater than the total peak flow; if so, the target control flow of the pipe network outlet is determined based on the total allocated flow and the weight mean, and the weight mean is the average value of the flow weights of the pipe network outlet under multiple different rainfall return periods; if not, the first peak flow is used as the target control flow corresponding to the pipe network outlet.

[0046] In one possible implementation, a second peak flow of at least one pipe network outlet under a plurality of different rainfall return periods is determined, and a weight corresponding to the second peak flow is determined; a weight mean corresponding to the at least one pipe network outlet is determined based on the weight, and the weight mean is the average of the weight values ​​of each pipe network outlet under different rainfall return periods; and a target control flow of the pipe network outlet is determined based on the total allocated flow and the weight mean.

[0047] In a possible implementation, the processing module is further used to dynamically adjust the target control flow of the pipe network outlet according to the distribution parameters of the pipe network outlet and the diffusion flow pattern of water pollutants in the drainage area.

[0048] In a fourth aspect, an embodiment of the present application provides a sewage and waterlogging coordinated pipe network outlet overflow control device, including: a memory, a processor;

[0049] Memory stores computer-executable instructions;

[0050] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the above first aspect and various possible implementations of the first aspect.

[0051] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the above first aspect and various possible implementation methods of the first aspect.

[0052] In a sixth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the above first aspect and various possible implementation methods of the first aspect.

[0053] The embodiments of the present application provide a sewage and flood coordinated pipe network outlet overflow control method, system, device and medium, which determine the total allocated flow and total peak flow to be controlled by the pipe network outlet by obtaining the drainage and flood control parameters of the service area of ​​the pipe network outlet and the water quality control parameters of the drainage area, and determine the target control flow of the pipe network outlet based on the total allocated flow and total peak flow to be controlled by the pipe network outlet, which not only takes into account the water environment target control requirements of the drainage area, but also integrates the drainage and flood control target requirements in the service area, realizes the dual coupling of pipe network water quality and water quantity targets, and realizes the problem of rainwater volume and rainwater runoff pollution control through the optimization of pipe network node flow, providing a reference for control engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0055] Figure 1 A schematic diagram of a sewage-waterlogging coordinated pipe network outlet overflow control method provided in an embodiment of the present application Figure 1 ;

[0056] Figure 2 A schematic diagram of a sewage-waterlogging coordinated pipe network outlet overflow control method provided in an embodiment of the present application Figure 2 ;

[0057] Figure 3~Figure 7 A schematic diagram of a first flow process line of multiple pipe network outlets provided in an embodiment of the present application;

[0058] Figure 8 A schematic diagram of a sewage-waterlogging coordinated pipe network outlet overflow control method provided in an embodiment of the present application Figure 3 ;

[0059] Fig. 9 A schematic diagram of a control method for a sewage-waterlogging coordinated pipe network outlet overflow control method provided in an embodiment of the present application;

[0060] Fig.10 A schematic diagram of a sewage and waterlogging coordinated pipe network outlet overflow control system provided in an embodiment of the present application;

[0061] Fig.11 A schematic diagram of the structure of a sewage-waterlogging coordinated pipe network outlet overflow control device provided in an embodiment of the present application;

[0062] Fig.12 A schematic structural diagram of a sewage and waterlogging coordinated pipe network outlet overflow control device provided in an embodiment of the present application.

[0063] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0064] 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] "Multiple" means two or more, and other quantifiers are similar. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0066] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0067] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0068] Figure 1 A schematic diagram of a sewage-waterlogging coordinated pipe network outlet overflow control method provided in an embodiment of the present application Figure 1 .like Figure 1 As shown, the method includes:

[0069] S101. Obtain drainage and flood control parameters of the service area corresponding to the outlet of the pipe network and water quality control parameters of the drainage area.

[0070] Among them, the service area corresponding to the pipeline outlet can be, for example, an urban area, and the drainage and flood prevention parameters can be, for example, urban drainage and flood prevention standards, which can be obtained through urban drainage and flood prevention targets; the drainage area can be, for example, a natural water body, and the water quality control parameters can include, for example, total phosphorus, ammonia nitrogen, total nitrogen, permanganate index, etc., which can be obtained through water environment protection targets.

[0071] The drainage and flood control standards of the city corresponding to the pipeline outlet are obtained through the urban drainage and flood control targets, providing a drainage and flood control reference for determining the target control flow of the pipeline outlet; the standards of total phosphorus, ammonia nitrogen, total nitrogen, permanganate index and other parameters of the natural water body corresponding to the pipeline outlet are obtained through the water environment protection targets, providing a water environment protection reference for determining the target control flow of the pipeline outlet.

[0072] S102: Determine the total water flow of the service area according to the drainage and flood prevention parameters, and determine the total distribution flow that should be controlled by the pipe network outlet based on the total water flow.

[0073] Among them, the total water flow is the water flow generated by the service area under the drainage and flood control parameters. Under the drainage and flood control parameters, in order to meet the drainage and flood control requirements of the service area, the discharge water flow that the pipe network outlet should bear is the total allocated flow.

[0074] According to the urban drainage and flood control standards of the service area, the water flow generated by the service area under the urban drainage and flood control standards is calculated through the hydraulic and hydrological model. For example, the total water flow corresponding to the drainage and flood control parameters of the service area can be calculated through hydraulic and hydrological models such as the Storm Water Management Model (SWMM). Based on the total water flow, the discharge water flow that the pipe network outlet should bear to meet the drainage and flood control requirements of the service area is calculated, that is, the total distribution flow. Considering the aspects of urban drainage and flood control, the determined pipe network target control flow meets the drainage and flood control requirements of the city.

[0075] S103. Determine a runoff control parameter corresponding to the service area based on the water quality control parameter, and determine a total peak flow rate that should be controlled at the outlet of the pipe network based on the runoff control parameter.

[0076] The runoff control parameters include the total runoff control rate and rainfall control target. The total peak flow that meets the water quality control parameters is calculated by the hydraulic hydrological model.

[0077] Based on the water quality control parameters of natural water bodies such as total phosphorus, ammonia nitrogen, total nitrogen, and permanganate index, combined with the pollutant load concentration of runoff rainwater, the total runoff control rate of the service area of ​​the pipe network is determined, and the rainfall control target is determined based on the runoff control rate. The total peak flow of the rainfall control target is calculated through hydraulic and hydrological model simulation. From the perspective of water environment protection, the determined pipe network target control flow meets the water quality protection requirements of natural water bodies.

[0078] It can be understood that there is no time sequence relationship between step S102 and step S103. Step S102 can be executed first, or step S103 can be executed first, or step S102 and step S103 can be executed at the same time, which is not limited here.

[0079] S104. Determine the target control flow of the pipe network outlet according to the total allocated flow and the total peak flow.

[0080] Among them, the target control flow is the runoff flow that should be regulated at the outlet of the pipeline network.

[0081] The target control flow is determined based on the relationship between the total distribution flow and the total peak flow at the outlet of the pipe network. The runoff flow that should be regulated at the outlet of the pipe network is determined by the target control flow, so that the runoff flow regulated at the outlet of the pipe network can meet the requirements of urban drainage and flood prevention in the pipe network service area and the water quality protection requirements of natural water bodies in the pipe network drainage area.

[0082] For example, a city lake has flood control and drainage, ecological landscape and leisure and entertainment as its main functions. There are 8 pipe network outlets in the service area of ​​the lake, namely J1, J2, J3, J4, J5, J6, J7 and J8. Among them, there are currently no effective control measures for the pipe network outlets of J1~J3, and the pipe network outlets of J4~J8 are controllable outlets. Determine the target control flow of J4~J8 to achieve drainage and pollution control.

[0083] In one possible implementation, the total water flow of the service area is determined according to the drainage and flood prevention parameters, and based on the total water flow, the total distribution flow to be controlled by the pipe network outlet is determined. The specific implementation method is: the total water flow and the allowable water accumulation flow of the service area are determined according to the drainage and flood prevention parameters; the existing drainage flow of the pumping station and the pipe network is determined according to the drainage capacity of the existing pumping station and the pipe network in the service area; the total distribution flow to be controlled by the pipe network outlet is determined according to the total water flow, the allowable water accumulation flow and the existing drainage flow.

[0084] Among them, the allowable accumulated water flow is the total flow of accumulated water allowed to exist in the city, and the water flow borne by the drainage capacity of existing pumping stations and pipelines is the existing drainage flow.

[0085] According to the drainage and flood control parameters of the city, the water flow generated by the city and the total flow of accumulated water allowed under the drainage and flood control parameters are determined through the hydraulic and hydrological model. Then, the existing drainage flow of the drainage pump station and the pipeline network is calculated through the hydraulic and hydrological model and the drainage capacity of the drainage pump station and the pipeline network. The total distributed flow is calculated using the following formula.

[0086]

[0087] Among them, Q is the total catchment flow, q1 is the total distribution flow, q2 is the allowable accumulation flow, and q3 is the existing drainage flow.

[0088] For example, according to the urban drainage and flood control standards, the drainage target in the service area is determined to effectively respond to the rainfall that occurs once in 30 years. According to the hydraulic and hydrological model, the total water collection volume of the 24-hour rainfall that occurs once in 30 years in the service area of ​​the pipe network outlet is calculated to be 64m 3 / s. The hydraulic and hydrological model calculates the existing drainage flow of the pipe network and drainage pump station to be 34m 3 / s, according to the above formula, the total distribution flow q1 is determined to be 30m 3 / s.

[0089] The embodiment of the present application provides a sewage and flood coordinated pipe network outlet overflow control method. In terms of drainage and flood prevention, the total distribution flow is determined by determining the total water flow, allowable water accumulation flow and existing drainage flow of the service area of ​​the pipe network outlet; in terms of water environment improvement, the total peak flow to be controlled by the pipe network outlet is determined according to the runoff control parameters corresponding to the service area, and then according to the relationship between the total distribution flow and the total peak flow, the runoff flow to be regulated by the pipe network outlet is determined under the dual goals of water environment improvement and drainage and flood prevention, thereby solving the problem of rainwater volume and rainwater runoff pollution control and providing a reference for control engineering.

[0090] Figure 2 A schematic diagram of a sewage-waterlogging coordinated pipe network outlet overflow control method provided in an embodiment of the present application Figure 2 .like Figure 2 As shown, in this embodiment Figure 1 Based on the embodiment, a possible implementation method for determining the runoff control parameter corresponding to the service area according to the water quality control parameter, and determining the total peak flow that the pipe network outlet should control based on the runoff control parameter is described in detail, and the method includes:

[0091] S201. Determine the water environment capacity of target pollutants in the drainage area based on steady-state mass balance analysis according to water quality control parameters.

[0092] Among them, the water environment capacity of the target pollutant is the ability of the natural water body to accommodate pollutants under the water quality control parameters.

[0093] According to the water quality control parameters, based on the steady-state mass balance analysis, a steady-state balance equation is constructed to calculate the water environment capacity of the target pollutants in the natural water body under the control parameters. The steady-state balance equation is constructed as follows:

[0094]

[0095] Where V is the volume of the river or lake (m 3 ); p is the concentration of target pollutants in rivers and lakes (mg / L); W is the amount of target pollutants discharged into rivers and lakes (t / a); v s is the sedimentation rate of pollutants in rivers and lakes, which is 10m / a; K s is the sedimentation rate of pollutants in rivers and lakes (a -1 ); H is the depth of river or lake (m); A s is the surface area of ​​rivers and lakes (m 2 );Q p It is the amount of pollutants discharged into rivers and lakes (t / a).

[0096] The steady-state solution is:

[0097]

[0098] Where Q1 is the water flow rate entering the natural water body (m 3 / a).

[0099] S202. According to the water environment capacity of the target pollutant, the pollutant load is distributed to the outlet of the pipe network to obtain the pollutant load distribution result.

[0100] Among them, the load distribution results are used to indicate the total amount of pollutants entering natural water bodies through runoff stormwater.

[0101] According to the pollutant capacity that the natural water body can accommodate under the water quality control parameters, the pollutant load is distributed to the outlet of the pipe network to obtain the total amount of pollutants entering the natural water body through runoff rainwater.

[0102] For example, according to the urban drainage and flood control standards, the water quality target of the lake is determined to be the surface water Class III standard, and the control parameter of the pollution factor total phosphorus (TP) is determined to be 0.05 mg / L. According to the TP mass balance equation, the lake needs to control the annual TP discharge to 3.82 t / a to maintain the surface water Class III water standard. Considering the safety critical value of 10%, the water environment capacity of the target pollutant is 3.44 t / a. Among them, the annual lake discharge load of the pipe network outlets J1~J3 without effective measures is 2.93 t / a.

[0103] According to the target pollutant water environment capacity of 3.44 t / a, the pollutant load of the pipe network outlets was allocated, and the pollutant load allocation result was obtained. Since the annual lake discharge load of the pipe network outlets J1~J3 without effective measures is 2.93 t / a, the pollutant load allocation result is that the controllable outlets J4~J8 allow the TP lake discharge load to be 0.51 t / a.

[0104] S203. Determine the runoff control parameters corresponding to the service area according to the pollutant load distribution result, where the runoff control parameters include rainfall control parameters.

[0105] Among them, runoff control parameters include total runoff control rate and rainfall control target.

[0106] According to the pollutant load distribution results, the total runoff control target corresponding to the service area of ​​the pipe network outlet is determined, and the corresponding rainfall control target is obtained based on the total runoff control target.

[0107] For example, the water quality control parameter may be an allowable TP load of 0.51 t / a. Based on the TP load concentration of runoff rainwater, the allowable runoff volume is 911,000 m 3 / a, the total runoff control rate in the corresponding pipe network outlet service area is 91%, and the daily design rainfall corresponding to the total runoff control rate is determined to be 60mm.

[0108] S204. The number of the pipe network outlet is at least one, and according to the rainfall control parameter, a first peak flow rate that should be controlled by the at least one pipe network outlet is simulated and calculated.

[0109] Among them, the first peak flow is the peak flow of each pipe network outlet under the rainfall control parameter.

[0110] The first flow process line of each pipe network outlet under the rainfall condition corresponding to the rainfall control parameter is calculated through the hydraulic and hydrological model, and the first peak flow corresponding to each pipe network outlet is obtained according to the first flow process line of each pipe network outlet.

[0111] S205: Determine a total peak flow rate according to the first peak flow rate.

[0112] The total peak flow is the sum of the first peak flows.

[0113] According to the first peak flow rate of each pipe network outlet, the sum of the first peak flow rates of the pipe network outlets to be controlled is taken as the total peak flow rate.

[0114] Figure 3~Figure 7 A schematic diagram of a first flow process line of multiple pipe network outlets provided in an embodiment of the present application.

[0115] For example, the first flow process line of J4 is obtained under the rainfall condition of 60 mm daily design rainfall calculated by hydraulic hydrological model. Figure 3 As shown; the first flow process line of J5 is as follows Figure 4 As shown; the first flow process line of J6 is as follows Figure 5 As shown; J7 first flow process line is as follows Figure 6 As shown; J8 first flow process line is as follows Figure 7 As shown. Figure 3~Figure 7 The first peak flow rate of J4~J8 is 0.63m 3 / s、0.84m 3 / s、4.73m 3 / s、3.42m 3 / s、7.14m 3 / s. The total peak flow is 16.76m 3 / s.

[0116] The method for regulating the total peak flow corresponding to the pipe network outlet provided in the embodiment of the present application determines the water environment capacity of pollutants that meet the water quality control parameters through the water quality control parameters of the drainage area, and then distributes the pollutant load to the pipe network outlet in combination with the annual lake discharge load, and then determines the corresponding runoff control parameters based on the results of the pollutant load distribution. According to the runoff control parameters, the corresponding rainfall event is designed to obtain the first flow process line and the corresponding first peak flow of the pipe network outlet. The sum of the first peak flows of the pipe network outlet is the total peak flow. From the perspective of water environment improvement, the total peak flow that should be controlled under the water quality control target of the drainage area is determined, which provides a reference for determining the runoff flow of the pipe network outlet.

[0117] Figure 8 A schematic diagram of a sewage-waterlogging coordinated pipe network outlet overflow control method provided in an embodiment of the present application Figure 3 .like Figure 8 In this embodiment, Figure 1 Example or Figure 2 Based on the embodiment, a possible implementation method for determining the target control flow of the pipe network outlet according to the total distribution flow and the total peak flow is described in detail, and the method includes:

[0118] S801, determine whether the total allocated flow is greater than the total peak flow. If so, execute steps S802 to S804; if not, execute step S805.

[0119] If the total allocated flow is greater than the total peak flow, it means that the target flow control of the pipeline outlet determined according to the total allocated flow meets both the urban drainage and flood control standards and the water quality protection standards of natural water bodies; if the total allocated flow is not greater than the total peak flow, it means that the target flow control of the pipeline outlet determined according to the total peak flow meets both the urban drainage and flood control standards and the water quality protection standards of natural water bodies.

[0120] S802. Determine a second peak flow of at least one pipe network outlet under a plurality of different rainfall return periods, and determine a weight corresponding to the second peak flow.

[0121] Among them, the rainfall return period is usually used to describe the probability of natural disasters or events recurring within a certain time interval. For example, it can be a 1-year rainfall return period, a 2-year rainfall return period, a 3-year rainfall return period, a 5-year rainfall return period, a 30-year rainfall return period, etc.

[0122] The hydraulic and hydrological model is used to calculate the second flow process line of at least one pipe network outlet under multiple different rainfall return periods, such as a rainfall return period of 1 year, a rainfall return period of 2 years, a rainfall return period of 3 years, a rainfall return period of 5 years, and a rainfall return period of 30 years. The corresponding second peak flow is determined according to the second flow process line, and the weight of each pipe network outlet corresponding to the second peak flow with multiple different return periods is determined.

[0123] For example, the second peak flow weights of the J4, J5, J6, J7 and J8 pipeline outlets under a rainfall return period of one year are 8.66%, 7.74%, 32.7%, 17.59% and 33.31% respectively; the second peak flow weights under a rainfall return period of two years are 8.37%, 7.54%, 33.1%, 18.6% and 32.39% respectively.

[0124] S803. Determine a weight mean corresponding to the at least one pipe network outlet according to the weight.

[0125] Among them, the weighted mean is the average of the weight values ​​of each pipe network outlet under different rainfall return periods.

[0126] According to the multiple weights of the pipe network outlets under multiple different rainfall return periods, the numerical average of the multiple weights is calculated.

[0127] For example, the weights of J4 in the 1-year rainfall return period, 2-year rainfall return period, 3-year rainfall return period, 5-year rainfall return period, and 30-year rainfall return period are 8.66%, 8.37%, 8.16%, 8.01%, 7.93%, and 8.23%, respectively. The average weight corresponding to the J4 pipe network outlet is 8.23%.

[0128] S804: Determine the target control flow of the pipe network outlet according to the total allocated flow and the weighted average.

[0129] According to the total allocated flow and the average weight of each pipe network outlet, the target control flow corresponding to each pipe network outlet is calculated using the following formula:

[0130]

[0131] Among them, q i is the target control flow of each outlet of the i-th pipe network, Q2 is the total distribution flow, is the weighted mean.

[0132] For example, when the total distribution flow is 30m 3 / s, when the weight average of the outlet of J4 pipe network is 8.23%, the target control flow of J4 can be calculated to be 2.47m 3 / s.

[0133] S805. Use the first peak flow rate as the target control flow rate corresponding to the outlet of the pipe network.

[0134] It can be understood that when calculating the total peak flow, the first peak flow corresponding to each pipe network outlet is obtained. Therefore, the first peak flow is directly used as the target control flow corresponding to the pipe network outlet.

[0135] In one possible implementation, a sewage and flood coordinated pipe network outlet overflow control method also includes: dynamically adjusting the target control flow of the pipe network outlet according to the distribution parameters of the pipe network outlet and the diffusion flow state of water pollutants in the drainage area.

[0136] Among them, the distribution parameter is the distribution characteristics of the pipe network outlet in the natural water body space, and the water pollutant diffusion flow state refers to the diffusion process of water pollutants in the water body.

[0137] The target control flow of the pipe network outlet is intelligently regulated according to the distribution characteristics of the pipe network outlet in the natural water body space and the diffusion process of water pollutants in the water body.

[0138] Furthermore, the Mike, HEC-RAS and other models are used to simulate the diffusion flow of pollutants in rivers and lakes under the regulated flow, and the flow weights of each pipe network outlet are intelligently regulated to achieve intelligent regulation of the target regulated flow of the pipe network outlet. This includes multiple outlets to one water body, and multiple outlets to multiple water bodies.

[0139] For example, Fig. 9A schematic diagram of a sewage and flood coordinated pipe network outlet overflow control provided in an embodiment of the present application; under a target control flow rate, the HEC-RAS model is used to simulate the pollutant diffusion flow state of the distributed flow of each outlet in the river and lake water body.

[0140] River and lake water body 901, solid line frame 902 is filled with color, which is the distribution of pollutant concentration under flow scheme A for each outlet when the target flow is constant, and dashed line frame 903 is the distribution of pollutant concentration under flow scheme B for each outlet when the target flow is constant, that is, reducing the distribution flow of outlet J1 and increasing the distribution flow of outlet J3 accordingly. After the target flow is regulated, the diffusion flow of pollutants in the water body is more uniform and the distribution of pollutant concentration is lower, and the flow distribution is further optimized from scheme A to scheme B.

[0141] When there is an assessment section in the water body, the flow can be regulated according to the target, and the impact coefficient of the assessment section under different allocation schemes can be further used to finally determine the outlet allocation flow.

[0142]

[0143] Among them, A ij is the influence coefficient of the water quality of the assessment section under the allocation scheme i; C ij is the water quality concentration of the assessment section j under the allocation scheme i; C 1j is the water quality concentration of assessment section j under the initial allocation plan.

[0144] A ij The smaller it is, the better the discharge flow distribution plan is.

[0145] Fig.10 A schematic diagram of a sewage and waterlogging coordinated pipe network outlet overflow control system provided in an embodiment of the present application, such as Fig.10 As shown, the system includes: at least one storage device 1000; a drainage branch pipe 1001; a drainage main pipe 1002; a sewage treatment device 1003; a sewage treatment device tailwater discharge pipe 1004; a river or lake water body 1005; an overflow discharge pipe 1006; a control inspection well 1007; a control gate 1008; a control pipeline 1009; a control facility 1010; and a discharge pipeline 1011.

[0146] The sewage treatment device 1003 executes the computer execution instructions stored in the memory 1000, so that the sewage treatment device 1003 executes the above-mentioned sewage and waterlogging coordinated pipe network outlet overflow control method;

[0147] The regulating gate 1008 is used to control the overflow flow into the river or lake based on the target regulating flow, so that the overflow flow is transmitted to the regulating facility 1010 through the regulating pipeline 1009;

[0148] Control facility 1010, for treating the overflow from the outlet, wherein the water treatment includes at least one of the following: storage, treatment and purification;

[0149] The overflow flow after water treatment is discharged into the river or lake water body 1005 through the discharge pipe 1011.

[0150] After determining the target control flow rate at the outlet of the pipeline network, the control gate 1008 controls the target control flow rate, and transfers the required control overflow flow rate through the control pipeline 1009 to the control facility 1010 for storage / treatment / purification and other water treatment, and then discharges it into the river and lake water body through the discharge pipeline 1011.

[0151] The method for determining the target control flow of the pipe network outlet provided in the embodiment of the present application determines the target control flow of the pipe network outlet according to the total allocated flow or the total peak flow by comparing the size relationship between the total allocated flow and the total peak flow. When the target control flow is determined based on the total allocated flow, the first peak flow is used as the target control flow to be controlled at the pipe network outlet; when the target control flow is determined based on the total peak flow, the target control flow is determined according to the total peak flow and the weighted mean, and the target control flow is calculated by the weighted mean, which reduces the impact of different rainfall events on the control degree of runoff rainwater and improves the universality of the determined target control flow. After determining the target control flow, the target control flow is dynamically adjusted according to the distribution parameters of the pipe network outlet and the diffusion flow state of water pollutants in the drainage area, the pipe network node flow is optimized, and the pipe network node runoff flow is determined under the dual goals of water environment improvement and drainage and flood prevention, realizing the dual coupling of pipe network water quality and quantity goals.

[0152] Fig.11 A schematic diagram of a sewage-waterlogging coordinated pipe network outlet overflow control device provided in an embodiment of the present application is shown in FIG. Fig.11 As shown, the present embodiment provides a sewage-waterlogging coordinated pipe network outlet overflow control device 110, which includes:

[0153] An acquisition module 1101 is used to acquire drainage and flood control parameters of the service area corresponding to the outlet of the pipe network and water quality control parameters of the drainage area;

[0154] The processing module 1102 is used to determine the total water flow of the service area according to the drainage and flood prevention parameters, and determine the total distribution flow that should be controlled by the outlet of the pipe network based on the total water flow;

[0155] The processing module 1102 is further used to determine the runoff control parameter corresponding to the service area based on the water quality control parameter, and determine the total peak flow that should be controlled by the outlet of the pipe network based on the runoff control parameter;

[0156] The determination module 1103 determines the target control flow of the outlet of the pipe network according to the total allocated flow and the total peak flow.

[0157] In a possible implementation, the processing module 1102 is also used to determine the total water flow and the allowable water accumulation flow of the service area based on the drainage and flood control parameters; determine the existing drainage flow of the pump station and the pipeline network based on the drainage capacity of the existing pump station and the pipeline network in the service area; determine the total distribution flow that should be controlled by the pipeline outlet based on the total water flow, the allowable water accumulation flow and the existing drainage flow, and the total distribution flow is the difference between the total water flow and the sum of the existing drainage flow and the allowable water accumulation flow.

[0158] In one possible implementation, the processing module 1102 is also used to determine the target pollutant water environment capacity of the drainage area based on the steady-state mass balance analysis according to the water quality control parameters; distribute the pollutant load to the pipe network outlet according to the target pollutant water environment capacity to obtain the pollutant load distribution result; determine the runoff control parameters corresponding to the service area according to the pollutant load distribution result; and determine the total peak flow that should be controlled at the pipe network outlet based on the runoff control parameters.

[0159] In one possible implementation, the number of pipe network outlets is at least one, the runoff control parameter includes a rainfall control parameter, and the processing module 1102 is further used to simulate and calculate the first peak flow corresponding to the at least one pipe network outlet according to the rainfall control parameter; determine the total peak flow according to the first peak flow, and the total peak flow is the sum of the first peak flows.

[0160] In one possible implementation, the determination module 1103 is also used to determine whether the total allocated flow is greater than the total peak flow; if so, the target control flow of the pipe network outlet is determined based on the total allocated flow and the weight mean, and the weight mean is the average value of the flow weights of the pipe network outlet under multiple different rainfall return periods; if not, the first peak flow is used as the target control flow corresponding to the pipe network outlet.

[0161] In one possible implementation, a second peak flow of at least one pipe network outlet under a plurality of different rainfall return periods is determined, and a weight corresponding to the second peak flow is determined; a weight mean corresponding to the at least one pipe network outlet is determined based on the weight, and the weight mean is the average of the weight values ​​of each pipe network outlet under different rainfall return periods; and a target control flow of the pipe network outlet is determined based on the total allocated flow and the weight mean.

[0162] In a possible implementation, the processing module 1102 is further configured to dynamically adjust the target control flow rate of the pipe network outlet according to the distribution parameters of the pipe network outlet and the diffusion flow pattern of water pollutants in the drainage area.

[0163] The present embodiment provides a sewage and flood coordinated pipe network outlet overflow control device, which can execute the sewage and flood coordinated pipe network outlet overflow control method provided in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail in the present embodiment.

[0164] Fig.12 This is a schematic diagram of a sewage and flood coordinated pipe network outlet overflow control device provided in an embodiment of the present application. Fig.12 As shown, the electronic device 120 provided in this embodiment includes: at least one processor 1201 and a memory 1202. Optionally, the device 120 also includes a communication component 1203. The processor 1201, the memory 1202 and the communication component 1203 are connected via a bus 1204.

[0165] In the specific implementation process, at least one processor 1201 executes the computer execution instructions stored in the memory 1202, so that at least one processor 1201 executes the above-mentioned sewage and waterlogging coordinated pipe network outlet overflow control method.

[0166] The specific implementation process of the processor 1201 can be found in the above method embodiment, and its implementation principle and technical effect are similar, so this embodiment will not be repeated here.

[0167] In the above embodiments, it should be understood that the processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the invention can be directly implemented as a hardware processor, or can be implemented by a combination of hardware and software modules in the processor.

[0168] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (NVM), such as at least one disk storage.

[0169] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of this application is not limited to only one bus or one type of bus.

[0170] The present application also provides a computer program product, including a computer program, which, when executed by a processor, implements the above-mentioned sewage and waterlogging coordinated pipe network outlet overflow control method.

[0171] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

[0172] The above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general or special-purpose computer.

[0173] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (Application Specific Integrated Circuits, referred to as: ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0174] The division of units is only a logical function division, and there may be other divisions in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0175] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0176] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0177] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0178] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0179] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A sewage and waterlogging coordinated pipe network outlet overflow control method, characterized in that: include: Obtain the drainage and flood control parameters of the service area corresponding to the outlet of the pipe network and the water quality control parameters of the drainage area; Determine the total water flow of the service area according to the drainage and flood prevention parameters, and determine the total distribution flow that should be controlled by the pipe network outlet based on the total water flow; Determine the runoff control parameter corresponding to the service area based on the water quality control parameter, and determine the total peak flow that should be controlled by the outlet of the pipe network based on the runoff control parameter; Determining a target control flow rate of the pipe network outlet according to the total allocated flow rate and the total peak flow rate; The step of determining the runoff control parameter corresponding to the service area based on the water quality control parameter, and determining the total peak flow rate that should be controlled by the pipe network outlet based on the runoff control parameter, includes: According to the water quality control parameters, based on steady-state mass balance analysis, determine the water environment capacity of the target pollutants in the drainage area; According to the water environment capacity of the target pollutant, the pollutant load is distributed to the outlet of the pipe network to obtain a pollutant load distribution result; Determining the runoff control parameters corresponding to the service area according to the pollutant load distribution result; Based on the runoff control parameters, the total peak flow that meets the water quality control parameters is calculated by the hydraulic and hydrological model.

2. The method according to claim 1, characterized in that The method of determining the total water flow of the service area according to the drainage and flood prevention parameters, and determining the total distribution flow that should be controlled by the pipe network outlet based on the total water flow, includes: Determine the total water flow and allowable water accumulation flow of the service area according to the drainage and flood control parameters; Determine the existing drainage flow of the pumping station and the pipe network according to the drainage capacity of the existing pumping station and the pipe network in the service area; According to the total water flow, the allowable water accumulation flow and the existing drainage flow, the total distribution flow that the pipe network outlet should control is determined, and the total distribution flow is the difference between the total water flow and the sum of the existing drainage flow and the allowable water accumulation flow.

3. The method according to claim 1, characterized in that The number of the pipe network outlets is at least one, the runoff control parameter includes a rainfall control parameter, and the total peak flow satisfying the water quality control parameter calculated by the hydraulic and hydrological model based on the runoff control parameter includes: According to the rainfall control parameter, simulate and calculate a first peak flow corresponding to the at least one pipe network outlet; A total peak flow is determined according to the first peak flows, where the total peak flow is the sum of the first peak flows.

4. The method according to claim 3, characterized in that: Determining the target control flow of the pipe network outlet according to the total distributed flow and the total peak flow includes: Determining whether the total allocated flow is greater than the total peak flow; If yes, then determine the target control flow of the pipe network outlet according to the total allocated flow and the weighted average, wherein the weighted average is the average of the flow weights of the pipe network outlet under multiple different rainfall return periods; If not, the first peak flow rate is used as the target control flow rate corresponding to the outlet of the pipe network.

5. The method according to claim 4, characterized in that Determining the target control flow of the pipe network outlet according to the total allocated flow and the weighted average includes: Determine a second peak flow rate of the at least one pipe network outlet under a plurality of different rainfall return periods, and determine a weight corresponding to the second peak flow rate; Determine a weight mean value corresponding to the at least one pipe network outlet according to the weight, wherein the weight mean value is an average of weight values ​​of each pipe network outlet under different rainfall return periods; The target control flow of the pipe network outlet is determined according to the total allocated flow and the weighted average.

6. The method according to claim 1, characterized in that The method further comprises: According to the distribution parameters of the pipe network outlet and the diffusion flow pattern of water pollutants in the target rivers and lakes, the target control flow of the pipe network outlet is dynamically adjusted.

7. A sewage and waterlogging coordinated pipe network outlet overflow control system, characterized in that: The system comprises: a storage device, a sewage treatment device, a regulating gate, a regulating pipeline, a regulating device and a discharge pipeline; Wherein, the memory stores computer-executable instructions; The sewage treatment device executes the computer execution instructions stored in the memory, so that the sewage treatment device performs the sewage and waterlogging coordinated pipe network outlet overflow control method according to any one of claims 1 to 6; The regulating gate is used to control the overflow flow into the river or lake based on the target regulating flow, so that the overflow flow is transmitted to the regulating device through the regulating pipeline; The control device is used to perform water treatment on the overflow of the outlet, and the water treatment includes at least one of the following: storage, treatment and purification; The overflow flow after water treatment is discharged into rivers and lakes through the discharge pipe.

8. A sewage and flood coordinated pipe network outlet overflow control device, characterized in that: include: An acquisition module is used to obtain the drainage and flood control parameters of the service area corresponding to the outlet of the pipe network and the water quality control parameters of the drainage area; A processing module, used to determine the total water flow of the service area according to the drainage and flood prevention parameters, and determine the total distribution flow that should be controlled by the outlet of the pipe network based on the total water flow; The processing module is further used to determine the runoff control parameter corresponding to the service area based on the water quality control parameter, and determine the total peak flow that should be controlled by the outlet of the pipe network based on the runoff control parameter; A determination module, which determines a target control flow rate of the pipe network outlet according to the total allocated flow rate and the total peak flow rate; The processing module is specifically used to determine the water environment capacity of the target pollutant in the drainage area based on the steady-state mass balance analysis according to the water quality control parameters; According to the water environment capacity of the target pollutant, the pollutant load is distributed to the outlet of the pipe network to obtain a pollutant load distribution result; Determining the runoff control parameters corresponding to the service area according to the pollutant load distribution result; Based on the runoff control parameters, the total peak flow that meets the water quality control parameters is calculated by the hydraulic and hydrological model.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the sewage-waterlogging coordinated pipe network outlet overflow control method as described in any one of claims 1-6.

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