CN113006231B - Model-based method for determining regional drainage standard-raising pollution-control operation scheduling mode - Google Patents

Abstract

The invention discloses a model-based method for determining the operation scheduling mode of regional drainage standard raising and pollution control, belongs to the technical field of urban drainage, and solves the problem that the existing system does not have the ability to coordinate, allocate and store drainage, nor can it form a system operation control strategy; The steps are as follows: use the hydraulic model software to analyze and arrange the topological structure of the pipe network by collecting the basic data and operation data of regional drainage; divide the sub-catchments and extract the distribution of the underlying surface to build an accurate ground model; After verifying and checking the model, the current drainage capacity of the area, the main problems and the causes of the problems are analyzed and studied; the large-scale regulation and storage tunnel raising standard and pollution control technology formed in the present invention is an operation mode obtained based on model analysis and evaluation, and its operation effect can be It is intuitively and visually demonstrated through model technology, which has scientific and theoretical basis.

Description

Determination method of operation scheduling mode of regional drainage standard improvement and pollution control based on model

technical field

The invention relates to the technical field of urban drainage, in particular to a model-based method for determining an operation dispatching mode of regional drainage standard improvement and pollution control.

Background technique

With the development of urbanization, the problem of urban waterlogging is becoming more and more prominent. Urban waterlogging refers to the phenomenon of accumulated water disasters in cities due to heavy or continuous precipitation exceeding the urban drainage capacity. At present, my country's urbanization is developing rapidly, and among the many effects that follow, many factors have exacerbated the flooding of streets during the flood season. Urban stagnant water causes damage to public facilities, severely affects or damages transportation, electricity, communications, network transmission, water sources, etc., and brings a lot of inconvenience to people's production and life. In addition, with the increase of urban population asset density, the loss will increase under the same inundation situation. Moreover, the central role of the city increases secondary impacts and indirect losses, and may cause major economic losses and casualties in severe cases.

With the rapid development of urbanization, in order to effectively control the problems of rainstorm waterlogging and early rain pollution, the current linear regulation and storage scheme based on deep drainage regulation and storage pipelines has been relatively stable and achieved. There is a consensus, but there is still a lack of theoretical guidance on how to scientifically implement the operation and scheduling of standard raising and pollution control. It is necessary to organically integrate the existing drainage system, on-site regulation and storage facilities, and deep drainage regulation and storage pipeline system, and coordinate the allocation of storage and drainage capacity to form a systematic operation. Control Strategy. Therefore, in the process of formulating the regional drainage and waterlogging prevention and control plan, it is necessary to form a model-based regional drainage standard and pollution control operation scheduling mode through analysis and evaluation, so as to achieve the dual goals of ensuring regional drainage safety and improving water environment quality.

Chinese patent CN207314397U discloses a kind of pollution control system on the ground of the storage yard, including: a rainwater collection unit, including: a rainwater guide part and a diversion pool part, the rainwater guide part guides the rainwater on the yard surface into the diversion pool part, and the diversion tank part includes The storage tank and the waste flow tank, the lower part of the storage tank is provided with the water inlet and the water outlet of the pool body, and the overflow hole is provided on the storage tank, and the waste flow tank is connected with the municipal rainwater pipe; the rainwater purification unit includes: anti-seepage tank , the inside of the anti-seepage tank is filled with purification fillers, plants are planted on the top of the purification fillers, the storage tank is connected to the top of the anti-seepage tank, and the bottom of the anti-seepage tank is provided with a purified water outlet for the output of purified rainwater, but the system does not It has the ability to coordinate the distribution and storage of drainage, and it cannot form a systematic operation control strategy. Therefore, we propose a model-based method for determining the operation scheduling mode of regional drainage standards and pollution control.

Contents of the invention

The purpose of the present invention is to provide a model-based method for determining the operation scheduling mode of regional drainage standard improvement and pollution control, so as to solve the problem that the existing system does not have the ability to coordinate the distribution and storage of drainage, nor can it form a system operation control strategy.

To achieve the above object, the present invention provides the following technical solutions:

The method for determining the operation scheduling mode of regional drainage standard improvement and pollution control based on the model, the steps are as follows:

S1. Use hydraulic model software to analyze and sort out the topological structure of the pipe network by collecting basic data and operating data of regional drainage;

S2. Construct the distribution model of the underlying surface, divide sub-catchment areas and extract the distribution of the underlying surface to construct a one-dimensional model of the pipe network;

S3. Build an accurate ground model, and build a two-dimensional model of the pipe network based on this to simulate the evolution of ground floods;

S4. Use the model after verification and calibration to analyze and study the current drainage capacity of the area, the main problems and the causes of the problems;

S5. Formulate a standard improvement and pollution control plan, and carry out multi-plan evaluation and comparison;

S6. Through comparative analysis, finally determine the flood control mode and the pollution control mode.

As a further solution of the present invention: in step S5, the steps of carrying out multi-program evaluation and comparison are as follows:

2) Eight deep tunnel operation modes were selected, and compared with the current situation in terms of water accumulation index and initial rain interception;

3) Among them, in mode 1, the municipal drainage is directly imported into the deep tunnel through the inflow, and the municipal closure, municipal discharge and deep tunnel regulation and storage are carried out at the same time. In mode 2 to mode 8, the way of municipal drainage into the deep tunnel through the inflow is Controllable, priority municipal closures.

As a further solution of the present invention: mode 2 and mode 3 use the deep tunnel to intercept the first rain of 10mm and 18mm, then close the inflow of the deep tunnel, open the municipal drainage, and when the rainfall intensity exceeds the capacity of the municipal drainage system, open the inflow again and start the deep tunnel Adjust storage and cut peaks.

As a further solution of the present invention: Mode 4 and Mode 5 use the deep tunnel to intercept the first rain of 10mm and 18mm, keep the inflow of the deep tunnel continuously open, and open the municipal discharge according to the water level.

As a further solution of the present invention: mode 6 to mode 8 are all peak-shaving and slow-discharge modes, and the municipal discharge of the river is started according to the water level. Among them, mode 6 determines the opening state of the deep tunnel inflow port according to the time of the peak rainfall position.

As a further solution of the present invention: among them, mode 6 determines the opening state of the deep tunnel inflow port according to the time of the peak rainfall position, and mode 7 and mode 8 are to open the inflow port when the rainfall intensity exceeds the designed drainage capacity of the original drainage system, and use the deep tunnel In mode 7, the inflow port of the deep tunnel is kept open, and in mode 8, the inflow port is closed when the rainfall intensity exceeds the designed drainage capacity of the original drainage system.

As a further solution of the present invention: in step S6, the flood control mode is the priority municipal interception, and the municipal discharge is opened according to the water level. When the rainfall intensity exceeds the designed drainage capacity of the original drainage system, the inflow port is opened, and the deep tunnel is used to adjust and store peaks. Keep the inflow of the deep tunnel continuously open; the pollution control mode is priority municipal interception. After the first rain is intercepted by the deep tunnel, the inflow of the deep tunnel is kept open, and the municipal discharge is opened according to the water level.

Compared with the prior art, the beneficial effects of the present invention are: the large-scale regulation and storage tunnel pollution control technology formed in the present invention is based on the operation mode obtained by model analysis and evaluation, and its operation effect can be demonstrated intuitively and vividly through the model technology. It has a certain scientific and theoretical basis. At the same time, the method for determining the operation scheduling mode of regional drainage standard improvement and pollution control based on the model of the present invention can be used for drainage system standard improvement planning, urban non-point source pollution control, deep regulation and storage pipeline planning demonstration and operation scheduling It is an important part of the core technology of water planning and has broad application prospects.

Description of drawings

Figure 1 is a schematic diagram of the implementation process of the model-based method for determining the operation scheduling mode of regional drainage standard improvement and pollution control.

Figure 2 is a schematic diagram of the implementation process of the model-based regional drainage standard upgrading and pollution control operation scheduling mode for standard upgrading and pollution control mode determination methods.

Detailed ways

The technical solutions of the present invention will be described in further detail below in conjunction with specific implementation methods. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example 1

Please refer to Fig. 1-2, in the embodiment of the present invention, the method for determining the operation scheduling mode of regional drainage standard improvement and pollution control based on the model, the steps are as follows:

S1. Use hydraulic model software to analyze and sort out the topological structure of the pipe network by collecting basic data and operating data of regional drainage;

S2. Construct the distribution model of the underlying surface, divide sub-catchment areas and extract the distribution of the underlying surface to construct a one-dimensional model of the pipe network;

S3. Build an accurate ground model, and build a two-dimensional model of the pipe network based on this to simulate the evolution of ground floods;

S4. Use the model after verification and calibration to analyze and study the current drainage capacity of the area, the main problems and the causes of the problems;

S5. Formulate a standard improvement and pollution control plan, and carry out multi-plan evaluation and comparison;

S6. Through comparative analysis, finally determine the flood control mode and the pollution control mode.

Example 2

Please refer to Fig. 1-2, in the embodiment of the present invention, the method for determining the operation scheduling mode of regional drainage standard improvement and pollution control based on the model, the steps are as follows:

S1. Use hydraulic model software to analyze and sort out the topological structure of the pipe network by collecting basic data and operating data of regional drainage;

S2. Construct the distribution model of the underlying surface, divide sub-catchment areas and extract the distribution of the underlying surface to construct a one-dimensional model of the pipe network;

S3. Build an accurate ground model, and build a two-dimensional model of the pipe network based on this to simulate the evolution of ground floods;

S4. Use the model after verification and calibration to analyze and study the current drainage capacity of the area, the main problems and the causes of the problems;

S5. Formulate a standard improvement and pollution control plan, and carry out multi-plan evaluation and comparison;

S6. Through comparative analysis, the pollution control mode is finally determined, that is, the municipal interception is given priority, and after the first rain is intercepted by the deep tunnel, the inflow of the deep tunnel is kept open, and the municipal discharge is opened according to the water level; the flood control mode is the municipal interception, according to the water level Turn on the municipal release of the river. When the rainfall intensity exceeds the design drainage capacity of the original drainage system, open the inflow port, use the deep tunnel to regulate storage and cut peaks, and keep the deep tunnel inflow port in a continuous open state

In step S5, the steps of carrying out multi-alternative evaluation and comparison are as follows:

4) Eight deep tunnel operation modes were selected, and compared with the current situation in terms of water accumulation index and initial rain interception;

5) Among them, in mode 1, the municipal drainage is directly imported into the deep tunnel through the inflow, and the municipal interception, municipal discharge and deep tunnel regulation and storage are carried out at the same time. In mode 2 to mode 8, the way of municipal drainage into the deep tunnel through the inflow is Controllable, priority municipal closures.

Mode 2 and Mode 3 use the deep tunnel to intercept the first rain of 10mm and 18mm, then close the deep tunnel inflow, open the municipal discharge to the river, and when the rainfall intensity exceeds the capacity of the municipal drainage system, open the inflow again, and start the deep tunnel regulation and peak reduction.

Mode 4 and Mode 5 use the deep tunnel to intercept the first rain of 10mm and 18mm, keep the inflow of the deep tunnel continuously open, and open the municipal discharge to the river according to the water level.

Modes 6 to 8 are peak-shaving and slow-discharging modes, and the municipal discharge is turned on according to the water level. Among them, mode 6 determines the opening state of the deep tunnel inflow port according to the time of the peak rainfall position.

Example 3

Please refer to Fig. 1-2, in the embodiment of the present invention, the method for determining the operation scheduling mode of regional drainage standard improvement and pollution control based on the model, the steps are as follows:

S1. Use hydraulic model software to analyze and sort out the topological structure of the pipe network by collecting basic data and operating data of regional drainage;

S2. Construct the distribution model of the underlying surface, divide sub-catchment areas and extract the distribution of the underlying surface to construct a one-dimensional model of the pipe network;

S3. Build an accurate ground model, and build a two-dimensional model of the pipe network based on this to simulate the evolution of ground floods;

S4. Use the model after verification and calibration to analyze and study the current drainage capacity of the area, the main problems and the causes of the problems;

S5. Formulate a standard improvement and pollution control plan, and carry out multi-plan evaluation and comparison;

S6. Through comparative analysis, the pollution control mode is finally determined, that is, the municipal interception is given priority, and after the first rain is intercepted by the deep tunnel, the inflow of the deep tunnel is kept open, and the municipal discharge is opened according to the water level; the flood control mode is the municipal interception, according to the water level Turn on the municipal release of the river. When the rainfall intensity exceeds the design drainage capacity of the original drainage system, open the inflow port, use the deep tunnel to regulate storage and cut peaks, and keep the deep tunnel inflow port in a continuous open state

In step S5, the steps of carrying out multi-alternative evaluation and comparison are as follows:

6) Eight deep tunnel operation modes were selected, and compared with the current situation in terms of water accumulation index and initial rain interception;

7) Among them, in mode 1, the municipal drainage is directly imported into the deep tunnel through the inflow, and the municipal interception, municipal discharge and deep tunnel regulation and storage are carried out at the same time. In mode 2 to mode 8, the way of municipal drainage into the deep tunnel through the inflow is Controllable, priority municipal closures.

Mode 2 and Mode 3 use the deep tunnel to intercept the first rain of 10mm and 18mm, then close the deep tunnel inflow, open the municipal discharge to the river, and when the rainfall intensity exceeds the capacity of the municipal drainage system, open the inflow again, and start the deep tunnel regulation and peak reduction.

Mode 4 and Mode 5 use the deep tunnel to intercept the first rain of 10mm and 18mm, keep the inflow of the deep tunnel continuously open, and open the municipal discharge to the river according to the water level.

Modes 6 to 8 are peak-shaving and slow-discharging modes, and the municipal discharge is turned on according to the water level. Among them, mode 6 determines the opening state of the deep tunnel inflow port according to the time of the peak rainfall position.

Among them, mode 6 determines the opening state of the inflow port of the deep tunnel according to the time of the peak position of rainfall. Mode 7 and mode 8 are to open the inflow port when the rainfall intensity exceeds the design drainage capacity of the original drainage system, and use the deep tunnel to adjust and store peaks. When mode 7 Keep the inflow port of the deep tunnel continuously open. Mode 8 is to close the inflow port when the rainfall intensity exceeds the designed drainage capacity of the original drainage system.

In step S6, the flood control mode is given priority to the municipal interception, and the municipal discharge is opened according to the water level. When the rainfall intensity exceeds the design drainage capacity of the original drainage system, the inflow port is opened, and the deep tunnel is used to regulate storage and cut peaks, so as to keep the deep tunnel inflow port continuously open. Status; the pollution control mode is the priority municipal interception, after the first rain is intercepted by the deep tunnel, the inflow of the deep tunnel is kept open, and the municipal discharge is opened according to the water level.

Example 4

In this example, the short-duration heavy rainfall is based on the Chicago rain type, the return period is based on the once-in-five-year rainfall pattern, the rainfall lasts 2 hours, and the rain peak position is 0.4. Under rainfall, mode 5 (pollution control mode) has a large initial rainfall interception flow and all initial rain interception, which has the best environmental benefits, and mode 7 (flood control mode) has the highest degree of flood control security.

According to the rainfall duration of 6 hours, the maximum hourly rainfall intensity is once in 5 years (58mm/h), using the Chicago rain pattern, the rain peak position coefficient is 0.4, and the total cumulative rainfall is 110mm. The pollution control mode and the flood control mode are used to calculate separately, and the average water accumulation depth, the average water accumulation time, the water accumulation road section ratio, the river discharge volume and other water accumulation and drainage indicators are statistically analyzed, and the results are: the reduction degree of the pollution control mode discharge river It is about 2% higher, mainly because when the deep tunnel is used to intercept and store the first rainwater, the municipal river pumping station is temporarily opened; the reduction degree of each water accumulation index in the flood control mode is about 2%-5% higher than that in the pollution control mode.

The beneficial effects of the present invention are: the large-scale regulation and storage tunnel raising standards and pollution control technology formed in the present invention is based on the operation mode obtained by model analysis and evaluation, and its operation effect can be demonstrated intuitively and vividly through the model technology, which has a certain degree of scientificity and theory According to, at the same time, the method for determining the operation scheduling mode of regional drainage standard improvement and pollution control based on the model of the present invention can provide scientific technical support for drainage system standard improvement planning, urban non-point source pollution control, deep storage pipeline planning demonstration and operation scheduling, etc. It is an important part of the core technology of water planning and has broad application prospects.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only includes an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (1)

1. The method for determining the regional drainage standard-raising pollution-control operation scheduling mode based on the model is characterized by comprising the following steps of:

s1, analyzing and organizing a pipe network topological structure by collecting regional drainage basic data information and operation information by utilizing hydraulic model software;

s2, constructing an underlying surface distribution model, dividing a sub-water-distribution area, and extracting the underlying surface distribution condition to construct a pipe network one-dimensional model;

s3, constructing an accurate ground model, constructing a two-dimensional model of the pipe network on the basis of the accurate ground model, and simulating the ground flood evolution condition;

s4, analyzing and researching the current drainage capability, main problems and problem causes of the region by using the calibrated and verified model;

s5, formulating a standard-extracting and pollution-controlling scheme, and developing multi-scheme evaluation comparison and selection;

s6, finally determining a flood prevention mode and a pollution control mode through comparative analysis;

in step S5, the step of developing multi-scenario evaluation comparison and selection is as follows: 8 deep tunnel operation modes are selected, and the ponding indexes and the initial rain interception condition are compared with the current situation;

in the step S6, the flood prevention mode is municipal interception, municipal drainage is started according to the water level, when the rainfall intensity exceeds the designed drainage capacity of the original drainage system, the inflow port is opened, and the deep tunnel inflow port is kept in a continuous opening state by utilizing deep tunnel storage regulation and peak clipping; the sewage control mode is municipal interception with priority, after primary rain is intercepted by using the deep tunnel, the inflow port of the deep tunnel is kept in an open state continuously, and municipal drainage is started according to the water level;

wherein, the multiple schemes comprise the following modes:

in the mode 1, municipal drainage directly flows into the deep tunnel through the inflow port, municipal interception, municipal drainage and deep tunnel regulation are carried out simultaneously, and in the mode 2 to the mode 8, the mode that the municipal drainage flows into the deep tunnel through the inflow port is controllable;

in the modes 2 and 3, after 10mm and 18mm of initial rain is intercepted by the deep tunnel, the inflow of the deep tunnel is closed, municipal drainage is started, the inflow port is opened again when the rainfall intensity exceeds the municipal drainage system capacity, and the peak clipping of the deep tunnel is started;

in the modes 4 and 5, after the initial rain of 10mm and 18mm is intercepted by the deep tunnel, the inflow port of the deep tunnel is kept in an open state continuously, and the municipal river drainage is opened according to the water level;

determining the opening state of a deep tunnel inflow opening according to the time of the rainfall peak position in the mode 6;

the modes 7 and 8 are that when the rainfall intensity exceeds the designed drainage capacity of the original drainage system, the inflow port is opened, and deep tunnel is used for regulating storage and peak clipping;

when the mode 7 keeps the deep tunnel inflow opening in a continuous opening state, and the mode 8 closes the inflow opening when the rainfall intensity exceeds the designed drainage capacity of the original drainage system;

and the modes 6 to 8 are peak clipping and slow draining modes, and municipal drainage is started according to the water level.

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