阅读说明：本技术 基于PySWMM的排水系统多来源入流入渗和出渗量动态估算方法 (PySWMM-based drainage system multi-source inflow infiltration and outflow dynamic estimation method ) 是由 曾思育 杨萌祺 鄂倩倩 董欣 徐智伟 于 2021-09-07 设计创作，主要内容包括：本发明公开了一种基于PySWMM的排水系统多来源入流入渗和出渗量动态估算方法及装置。该方法包括：构建区域地下水－河水－排水系统关键节点水量、液位监测体系；识别区域排水系统存在的入渗出渗主要过程,构建主要过程的控制方程；构建基于EPA-SWMM的区域排水系统机理模型,以PySWMM为接口,耦合控制方程及排水系统机理模型,构建排水系统入渗出渗动力学模型；构建以全局灵敏度分析方法和组合最优化方法为基础的参数识别方法,以监测体系中的水量和液位数据为目标函数,使用参数识别方法得到本地化参数；将本地化参数输入排水系统入渗出渗动力学模型,分析排水系统中入流入渗和出渗量的时间和空间特征。该方法可以实现入渗出渗过程的动态模拟与评估。(The invention discloses a drainage system multi-source inflow infiltration and outflow dynamic estimation method and device based on PySWMM. The method comprises the following steps: constructing a water quantity and liquid level monitoring system for key nodes of a regional underground water-river water-drainage system; identifying a main infiltration and infiltration process of a regional drainage system, and constructing a control equation of the main process; constructing a regional drainage system mechanism model based on EPA-SWMM, coupling a control equation and a drainage system mechanism model by taking PySWMM as an interface, and constructing a drainage system infiltration and infiltration dynamic model; constructing a parameter identification method based on a global sensitivity analysis method and a combined optimization method, taking water quantity and liquid level data in a monitoring system as an objective function, and obtaining a localized parameter by using the parameter identification method; and inputting the localization parameters into a drainage system infiltration and infiltration kinetic model, and analyzing the time and space characteristics of inflow infiltration and infiltration amount in the drainage system. The method can realize dynamic simulation and evaluation of the infiltration and infiltration process.)

1. A drainage system multi-source inflow infiltration and outflow dynamic estimation method based on PySWMM is characterized by comprising the following steps:

constructing a water quantity and liquid level monitoring system for key nodes of a regional underground water-river water-drainage system;

identifying a main infiltration and infiltration process existing in a regional drainage system, and constructing a control equation of the main process;

constructing a regional drainage system mechanism model based on EPA-SWMM, coupling the control equation and the drainage system mechanism model by taking PySWMM as an interface, and constructing a drainage system infiltration and infiltration dynamic model;

constructing a parameter identification method based on a global sensitivity analysis method and a combined optimization method, taking water quantity and liquid level data in the monitoring system as an objective function, and obtaining a localized parameter by using the parameter identification method;

and inputting the localization parameters into the drainage system infiltration and infiltration kinetic model, and analyzing the time and space characteristics of different types of inflow infiltration and infiltration in the drainage system.

2. The method of claim 1, wherein the regional groundwater-river water-drainage system key node water volume and liquid level monitoring system comprises: and measuring the water level of underground water, the water level of river water, rainfall, the water quantity and the liquid level of key nodes of drainage systems such as a pump station and the like in the region.

3. The method of claim 1, wherein the main processes of infiltration and infiltration present in the zonal drainage system include identifying the processes of infiltration and infiltration present in the zone and processes characterized in the form of governing equations.

4. The method of claim 1, wherein the parameter identification method comprises:

identifying partial parameters in the drainage system infiltration and infiltration kinetic model by a global sensitivity analysis method;

and constructing a training verification set according to monitoring data in the key node water quantity and liquid level monitoring system of the regional underground water-river water-drainage system, finding a group of optimal parameters on the training set by using a combined optimization method, and evaluating the model effect of the optimal parameters on the verification set.

5. A dynamic estimation device for multi-source inflow infiltration and outflow of drainage system based on PySWMM, comprising:

the first construction module is used for constructing a key node water quantity and liquid level monitoring system of a regional underground water-river water-drainage system;

the second construction module is used for identifying the main infiltration and infiltration process existing in the regional drainage system and constructing a control equation of the main process;

the third construction module is used for constructing a regional drainage system mechanism model based on EPA-SWMM, coupling the control equation and the drainage system mechanism model by taking PySWMM as an interface, and constructing a drainage system infiltration and infiltration dynamic model;

the fourth construction module is used for constructing a parameter identification method based on a global sensitivity analysis method and a combined optimization method, and obtaining a localized parameter by using the parameter identification method with water quantity and liquid level data in the monitoring system as an objective function;

and the estimation module is used for inputting the localization parameters into the drainage system infiltration and infiltration kinetic model and analyzing the time and space characteristics of different types of inflow and infiltration quantities in the drainage system.

6. The apparatus of claim 5, wherein the regional groundwater-river water-drainage system key node water volume and liquid level monitoring system comprises: and measuring the water level of underground water, the water level of river water, rainfall, the water quantity and the liquid level of key nodes of drainage systems such as a pump station and the like in the region.

7. The apparatus of claim 5, wherein the main processes of infiltration and infiltration existing in the drainage system of the zone comprise processes of identifying infiltration and infiltration existing in the zone and processes characterized in the form of control equations.

8. The apparatus of claim 5, wherein the fourth building block is further configured to identify a portion of the parameters of the drainage system infiltration/infiltration kinetic model using a global sensitivity analysis method; and constructing a training verification set according to monitoring data in the key node water quantity and liquid level monitoring system of the regional underground water-river water-drainage system, finding a group of optimal parameters on the training set by using a combined optimization method, and evaluating the model effect of the optimal parameters on the verification set.

Technical Field

The invention relates to the technical field of infiltration and infiltration evaluation, in particular to a drainage system multi-source inflow infiltration and infiltration dynamic estimation method and device based on PySWMM.

Background

The interaction between the quantitative recognition drainage system and the environment is the basis for ensuring the efficient operation of the drainage system, wherein the problem that rainwater and sewage seep out when external water enters a pipe network and the pipe network is particularly important. Most of the existing solutions to the problem are directed to a small-range specific area, and the portability and the applicability of related results are poor. Therefore, it is necessary to construct an infiltration and infiltration mechanization model for a drainage system, and a research method and a result with good universality are obtained. How to identify and characterize the main processes of inflow seepage and seepage of a drainage system and construct a drainage system seepage mechanism model with certain universality, thereby quantitatively analyzing the dynamic characteristics of the seepage process of the drainage system and comprehensively inspecting the interaction process of the drainage system and external water and the influence on the drainage system, and the method becomes a problem to be solved urgently in the field of drainage system seepage evaluation.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, one objective of the present invention is to provide a dynamic estimation method for multi-source inflow and outflow rates of a drainage system based on PySWMM, which characterizes the main processes of the drainage system in terms of control equations, constructs a drainage system infiltration and outflow mechanism model based on PySWMM, and can realize dynamic simulation of the drainage system infiltration and outflow process and quantitatively analyze the time-space change characteristics of the drainage system infiltration and outflow process.

Another objective of the present invention is to provide a dynamic estimation device for the multi-source inflow infiltration and outflow of drainage system based on PySWMM.

In order to achieve the above object, an embodiment of an aspect of the present invention provides a drainage system multi-source inflow/outflow dynamic estimation method based on PySWMM, including: constructing a water quantity and liquid level monitoring system for key nodes of a regional underground water-river water-drainage system; identifying a main infiltration and infiltration process existing in a regional drainage system, and constructing a control equation of the main process; constructing a regional drainage system mechanism model based on EPA-SWMM, coupling the control equation and the drainage system mechanism model by taking PySWMM as an interface, and constructing a drainage system infiltration and infiltration dynamic model; constructing a parameter identification method based on a global sensitivity analysis method and a combined optimization method, taking water quantity and liquid level data in the monitoring system as an objective function, and obtaining a localized parameter by using the parameter identification method; and inputting the localization parameters into the drainage system infiltration and infiltration kinetic model, and analyzing the time and space characteristics of different types of inflow infiltration and infiltration in the drainage system.

According to the PySWMM-based drainage system multi-source inflow infiltration and outflow dynamic estimation method, the main processes of the drainage system infiltration and outflow are identified and represented through a systematic analysis method, the PySWMM is used as an interface, and a drainage system mechanism model is coupled to construct a drainage system infiltration and outflow mechanism model, so that dynamic simulation of the infiltration and outflow process is realized. The influence of the interaction process of the drainage system and the external water is comprehensively considered, and the space distribution of the seepage of the drainage system and the dynamic change characteristics along with time are quantized.

In addition, the method for dynamically estimating the multi-source inflow and outflow volumes of the drainage system based on the PySWMM according to the above embodiment of the present invention may further have the following additional technical features:

according to one embodiment of the invention, the system for monitoring the water quantity and the liquid level of the key node of the regional underground water-river water-drainage system comprises: and measuring the water level of underground water, the water level of river water, rainfall, the water quantity and the liquid level of key nodes of drainage systems such as a pump station and the like in the region.

According to one embodiment of the invention, the main processes of infiltration and infiltration existing in the drainage system of the zone comprise a process of identifying the inflow and infiltration existing in the zone and a process of characterization in the form of control equations.

According to one embodiment of the invention, the parameter identification method comprises the following steps: identifying partial parameters in the drainage system infiltration and infiltration kinetic model by a global sensitivity analysis method; and constructing a training verification set according to monitoring data in the key node water quantity and liquid level monitoring system of the regional underground water-river water-drainage system, finding a group of optimal parameters on the training set by using a combined optimization method, and evaluating the model effect of the optimal parameters on the verification set.

In order to achieve the above object, another embodiment of the present invention provides a drainage system dynamic estimation apparatus for multi-source inflow/outflow volume based on PySWMM, including: the first construction module is used for constructing a key node water quantity and liquid level monitoring system of a regional underground water-river water-drainage system; the second construction module is used for identifying the main infiltration and infiltration process existing in the regional drainage system and constructing a control equation of the main process; the third construction module is used for constructing a regional drainage system mechanism model based on EPA-SWMM, coupling the control equation and the drainage system mechanism model by taking PySWMM as an interface, and constructing a drainage system infiltration and infiltration dynamic model; the fourth construction module is used for constructing a parameter identification method based on a global sensitivity analysis method and a combined optimization method, and obtaining a localized parameter by using the parameter identification method with water quantity and liquid level data in the monitoring system as an objective function; and the estimation module is used for inputting the localization parameters into the drainage system infiltration and infiltration kinetic model and analyzing the time and space characteristics of different types of inflow and infiltration quantities in the drainage system.

The PySWMM-based drainage system multi-source inflow infiltration and outflow dynamic estimation device identifies and represents the main processes of the infiltration and outflow of the drainage system by a systematic analysis method, and constructs a drainage system infiltration and outflow mechanism model by taking the PySWMM as an interface and coupling with the drainage system mechanism model, thereby realizing the dynamic simulation of the infiltration and outflow process. The influence of the interaction process of the drainage system and the external water is comprehensively considered, and the space distribution of the seepage of the drainage system and the dynamic change characteristics along with time are quantized.

In addition, the dynamic estimation device for the multi-source inflow infiltration and outflow volume of the drainage system based on the PySWMM according to the above embodiment of the invention may further have the following additional technical features:

according to one embodiment of the invention, the system for monitoring the water quantity and the liquid level of the key node of the regional underground water-river water-drainage system comprises: and measuring the water level of underground water, the water level of river water, rainfall, the water quantity and the liquid level of key nodes of drainage systems such as a pump station and the like in the region.

According to one embodiment of the invention, the main processes of infiltration and infiltration existing in the drainage system of the zone comprise a process of identifying the inflow and infiltration existing in the zone and a process of characterization in the form of control equations.

According to an embodiment of the present invention, the fourth building module is further configured to identify a part of parameters in the drainage system infiltration and infiltration kinetic model by a global sensitivity analysis method; and constructing a training verification set according to monitoring data in the key node water quantity and liquid level monitoring system of the regional underground water-river water-drainage system, finding a group of optimal parameters on the training set by using a combined optimization method, and evaluating the model effect of the optimal parameters on the verification set.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a flow chart of a method for dynamic estimation of the amount of influent and effluent of a PySWMM-based drainage system according to one embodiment of the present invention;

FIG. 2 is a graph of overall order sensitivity index for each parameter, according to one embodiment of the present invention;

FIG. 3 is a graph of Nash efficiency coefficients (left) of a model on a training set versus model simulation results and actual measurement results (right) according to one embodiment of the present invention;

FIG. 4 is a graph of Nash efficiency coefficients (left) of a model on a test set versus model simulation results versus actual measurement results (right) in accordance with one embodiment of the present invention;

FIG. 5 shows the analysis of the pipe infiltration and infiltration rate of a drainage pipe in a research area according to an embodiment of the present invention;

FIG. 6 is a statistical plot of the pipe segment scale infiltration and infiltration rates of a drainage pipe network in a research area according to one embodiment of the present invention;

fig. 7 is a schematic structural diagram of a dynamic estimation device for the multi-source inflow/outflow infiltration and seepage amount of a PySWMM-based drainage system according to an embodiment of the invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The following describes a method and a device for dynamically estimating the multi-source inflow infiltration and outflow of a drainage system based on PySWMM according to an embodiment of the invention with reference to the accompanying drawings.

Firstly, a multi-source inflow infiltration and outflow dynamic estimation method for a drainage system based on PySWMM provided by the embodiment of the invention will be described with reference to the attached drawings.

Fig. 1 is a flow chart of a method for dynamically estimating the multi-source inflow and outflow rates of a PySWMM-based drainage system according to an embodiment of the present invention.

As shown in fig. 1, the dynamic estimation method for multi-source inflow infiltration and outflow volume of the drainage system based on PySWMM comprises the following steps:

in step S101, a water quantity and liquid level monitoring system for key nodes of a regional underground water-river water-drainage system is constructed.

In one embodiment of the invention, the system for monitoring the water quantity and the liquid level of the key node of the regional underground water-river water-drainage system comprises: and measuring the water level of underground water, the water level of river water, rainfall, the water quantity and the liquid level of key nodes of drainage systems such as a pump station and the like in the region.

It can be understood that, in order to make the quantitative analysis result of the infiltration and infiltration process more accurate, the monitoring should cover the key nodes of the groundwater, river water and drainage system, and the change of the hydrogeological conditions should be considered and the distribution should be uniform; the collection of the liquid level and water quantity data of key nodes of underground water, river water and drainage systems is kept within 1-15 minutes and the same collection frequency is kept; the monitoring should take into account the major period of change of hydrological conditions in the year, covering at least rainy and dry seasons, and is recommended to be carried out on a season-by-season basis.

In step S102, the infiltration and infiltration main process existing in the regional drainage system is identified, and a control equation of the main process is constructed.

The main processes of infiltration and infiltration of drainage systems include identifying the processes of infiltration and infiltration of inflow present in the area and characterizing these processes in the form of control equations. The common interaction process of the external water and the drainage system is that the underground water seeps and seeps, the river water flows backwards and the rainwater flows in and out. One possible control equation structure is shown below:

groundwater infiltration and infiltration control equation:

ground＝ground_coef1·K_in·ΔH_g·L+ground_coef2·ΔH_g ^k·C_L·R·L (1)

wherein, ground is the infiltration and infiltration amount (m) of underground water³) Ground _ coef1 and ground _ coef2 are underground water weight parameters, K_inIs the comprehensive permeability potential parameter of the pipeline, K_inIs the difference (m) between the groundwater level and the liquid level in the pipe section, L is the length (m) of the pipe section, k is the permeability index, C_LR is the pipe segment radius (m).

River water backflow control equation:

wherein river is river water reverse flow (m)³) River _ coef1 and river _ coef1 are river water backflow weight parameters, k_floodIs the average flood factor, Δ H_rThe river water level and the liquid level in the pipe sectionThe difference (m), AL, is the equivalent pipe section parameter.

Rainwater inflow and outflow control equation:

wherein, rain is the infiltration and seepage amount (m) of underground water³) Rain _ coef1 and rain _ coef1 are rain inflow and outflow weight parameters, a₁、a₂、b₁And b₂As model parameters, preci is the rainfall (mm).

In step S103, a regional drainage system mechanism model based on EPA-SWMM is constructed, and a drainage system infiltration and infiltration dynamic model is constructed by coupling a control equation and the drainage system mechanism model with PySWMM as an interface.

And constructing a regional drainage system mechanism model based on EPA-SWMM, coupling a control equation of each infiltration and infiltration main process and a drainage system mechanism model by taking PySWMM as an interface, and constructing a drainage system infiltration and infiltration dynamic model. In the step, the coupling mode of the control equation and the drainage system mechanism model is as follows: firstly, calculating the seepage amount caused by each process on the scale of a pipe section by using a seepage process control equation on the basis of underground water, river water, monitoring data of a drainage system and state data obtained by simulation of a drainage system mechanism model; then, inputting the calculated seepage inflow and outflow amount as inflow (or outflow) amount of an upstream node of the pipe section into a drainage system mechanism model by taking PySWMM as an interface; and finally, calling a drainage system mechanism model to simulate the state of the regional drainage system. The constructed dynamic model of infiltration and infiltration is repeated in each time step, thereby realizing the functions of dynamically simulating the process of infiltration and analyzing the influence of the process of infiltration and infiltration on the state of the drainage system.

In step S104, a parameter identification method based on the global sensitivity analysis method and the combinatorial optimization method is constructed, and the localized parameters are obtained by using the parameter identification method with the water amount and the liquid level data in the monitoring system as the objective function.

In one embodiment of the invention, the parameter identification method comprises the steps of firstly identifying relatively sensitive key parameters in the dynamic model of the infiltration and infiltration of the drainage system by using a certain global sensitivity analysis method, and reducing the number of unknown parameters; then, a training verification set is constructed by using the monitoring data, a group of optimal parameters on the training set is found by using a certain combination optimization method, and the model effect of the group of parameters on the verification set is evaluated.

In step S105, the localization parameters are input into the drainage system infiltration and infiltration kinetic model, and the temporal and spatial characteristics of different types of inflow and infiltration in the drainage system are analyzed.

And substituting the localization parameters into a drainage system infiltration and infiltration kinetic model, and analyzing the spatial distribution condition of the infiltration and infiltration amount of the drainage system and the dynamic change characteristics of the infiltration and infiltration amount along with time under different types of conditions such as rainwater inflow, river water backflow, underground water infiltration, rainwater and sewage mixed water infiltration and the like in the drainage system by using a mechanism model containing the localization parameters.

In order to make clear to those skilled in the art the dynamic estimation method of the multi-source inflow infiltration and outflow of the drainage system based on PySWMM according to the present invention, the following is described in detail with reference to fig. 2 to 6.

In the embodiment, a northern garden pump station area in Suzhou city is taken as a research area, a rainfall-surface water-underground water-drainage system monitoring network is constructed in a case area of 0.8 square kilometer, the main infiltration and infiltration processes in the area are identified and represented, a drainage system model with an infiltration and infiltration dynamic simulation function is built, parameter identification is carried out by using a training verification set based on monitoring data, and the influence of infiltration and infiltration on the operation of a drainage pipe network in the research area is further quantitatively analyzed. The present embodiment is described in further detail below.

Firstly, a rainfall-surface water-underground water-drainage system monitoring network is constructed. The constructed monitoring network comprises a rainfall monitoring station of a Mongolian and Jiangsu area, an underground water level monitoring point of a northern garden pump station, a water level monitoring point of a suspension bridge river, a pump station flow liquid level monitoring point and a liquid level monitoring point at an area water outlet, and the data acquisition interval is 5 minutes.

Thereafter, the main process of infiltration and seepage of a drainage system of a Suzhou north garden pump station district is generalized. The river network in Suzhou city is densely distributed, the rainfall is abundant, the groundwater level is high, and the research area has the processes of groundwater seepage, river water reverse irrigation, rainwater inflow and outflow and the like. Therefore, a mechanism model of the infiltration and infiltration process comprising formula (1), formula (2) and formula (3) is constructed.

And coupling an underground water infiltration and infiltration control equation, river water and rainwater with a research area drainage system mechanism model by using PySWMM as an interface to construct a drainage system infiltration and infiltration mechanism model. In each time step, the program respectively uses the control equation to calculate and obtain the amounts of underground water, river water and rainwater flowing into or out of each water pipe, and inputs the amount of infiltration and infiltration into a drainage system mechanism model by taking PySWMM as an interface to be used as the direction-finding inflow of an upstream node of the pipe section; the drainage system mechanism model is used for simulating the state of the regional drainage system, and dynamic simulation of the seepage process of the drainage system of the northern garden pump station district in Suzhou city is realized.

And respectively taking the total outlet flow and the peak flow of the point location of the northern circular pump station as target variables, and calculating the total order sensitivity index of 17 parameters in the dynamic model of the water drainage system infiltration and infiltration by using a Sobol global sensitivity analysis method. The sampling times were set to 200 and the model was run 560 times. As shown in fig. 2, the overall order sensitivity index of the parameter is slightly different for different target variables, but the overall order sensitivity index for CL (permeability coefficient) and k (permeability index) is relatively low. Therefore, it is considered that reducing the value ranges of CL and k in this region has a small influence on the model simulation result.

Considering that the water outlet liquid level of the region can represent the water discharge condition of the whole region, the water outlet liquid level can be used as a target variable of an infiltration and infiltration model of a water discharge system, a training set and a verification set are constructed by using the water outlet liquid level monitoring data of the region, and a Nash efficiency coefficient commonly used in the hydrological field is selected as a target function of the research. Based on the sensitivity analysis result, in the parameter calibration and verification process, the initial value ranges of CL and k are reduced, and the initial value ranges of the other parameters are unchanged. And finding a group of optimal parameters on the training set by using a genetic algorithm, and verifying the effect of the group of parameters on the verification set. Fitting conditions of the Nash efficiency coefficients of the model on the training set and the simulation result of the model are shown in FIG. 3, and fitting conditions of the model on the verification set are shown in FIG. 4. The result shows that the model has strong prediction capability under different rainfall conditions, has high stability and can better describe the interaction between the drainage system and the external water.

And finally, substituting the localization parameters into an infiltration and infiltration mechanism model, and calculating the infiltration and infiltration amount of the pump station drainage system in the northern province of Suzhou by using the model. Taking 30/6/2019 as an example, the model simulation result shows that the inflow rate of rainwater, the backflow rate of river water and the infiltration rate of underground water respectively account for 9.78%, 31.21% and 10.02% of the pipeline mixed sewage on the same day, and the total proportion of external water is 51.01%. The minute-by-minute analysis result is shown in fig. 5, and the result shows that the rainwater inflow rate is small in the rainfall process, but the river water backflow amount is remarkably increased due to the rise of the river channel liquid level after the rainfall. The spatial statistics of the pipe segment scale infiltration permeability are shown in figure 6.

According to the PySWMM-based drainage system multi-source inflow infiltration and outflow dynamic estimation method provided by the embodiment of the invention, the main processes of the drainage system infiltration and outflow are identified and represented by a systematic analysis method, the PySWMM is used as an interface, and a drainage system mechanism model is coupled to construct a drainage system infiltration and outflow mechanism model, so that the dynamic simulation of the infiltration and outflow process is realized. The influence of the interaction process of the drainage system and the external water is comprehensively considered, and the space distribution of the seepage of the drainage system and the dynamic change characteristics along with time are quantized.

Next, a multi-source inflow/outflow dynamic estimation device for a drainage system based on PySWMM according to an embodiment of the present invention will be described with reference to the accompanying drawings.

Fig. 7 is a schematic structural diagram of a dynamic estimation device for the multi-source inflow/outflow infiltration and seepage amount of a PySWMM-based drainage system according to an embodiment of the invention.

As shown in fig. 7, the dynamic estimation device for the multi-source inflow infiltration and outflow volume of the drainage system based on PySWMM comprises: a first building block 100, a second building block 200, a third building block 300, a fourth building block 400 and an evaluation block 500.

The first construction module 100 is used for constructing a water quantity and liquid level monitoring system for a key node of a regional underground water-river water-drainage system. And a second construction module 200, configured to identify a main infiltration/infiltration process existing in the regional drainage system, and construct a control equation of the main process. And a third construction module 300, configured to construct an EPA-SWMM-based regional drainage system mechanism model, couple a control equation and a drainage system mechanism model with a PySWMM as an interface, and construct a drainage system infiltration and infiltration dynamic model. A fourth construction module 400, configured to construct a parameter identification method based on a global sensitivity analysis method and a combinatorial optimization method, and obtain a localized parameter by using the parameter identification method with water amount and liquid level data in a monitoring system as an objective function. And the estimation module 500 is used for inputting the localization parameters into the dynamic model of the infiltration and infiltration of the drainage system and analyzing the time and space characteristics of different types of inflow and infiltration in the drainage system.

In one embodiment of the invention, the system for monitoring the water quantity and the liquid level of the key node of the regional underground water-river water-drainage system comprises: and measuring the water level of underground water, the water level of river water, rainfall, the water quantity and the liquid level of key nodes of drainage systems such as a pump station and the like in the region.

In one embodiment of the invention, the main processes of infiltration and infiltration present in the drainage system of a zone comprise the identification of the processes of infiltration and infiltration present in the zone and the characterization in the form of control equations.

In an embodiment of the present invention, the fourth building module is further configured to identify a part of parameters in the drainage system infiltration and infiltration kinetic model by a global sensitivity analysis method; and constructing a training verification set according to monitoring data in a key node water quantity and liquid level monitoring system of the regional underground water-river water-drainage system, finding a group of optimal parameters on the training set by using a combined optimization method, and evaluating the model effect of the optimal parameters on the verification set.

It should be noted that the foregoing explanation of the method embodiment is also applicable to the apparatus of this embodiment, and is not repeated herein.

According to the PySWMM-based drainage system multi-source inflow infiltration and outflow dynamic estimation device provided by the embodiment of the invention, the main processes of the drainage system infiltration and outflow are identified and represented by a systematic analysis method, the PySWMM is used as an interface, and a drainage system mechanism model is coupled to construct a drainage system infiltration and outflow mechanism model, so that the dynamic simulation of the infiltration and outflow process is realized. The influence of the interaction process of the drainage system and the external water is comprehensively considered, and the space distribution of the seepage of the drainage system and the dynamic change characteristics along with time are quantized.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.