Urban drainage network optimization design system

Abstract

The invention discloses an urban drainage network optimization design system, and relates to the technical field of urban drainage optimization, a data collection and preprocessing module is utilized to collect basic data, a parameter determination module is utilized to determine the rainfall intensity, the ground permeability, the sewage concentration and the pipeline cleanliness, and a comprehensive evaluation optimization module is utilized to optimize the urban drainage network. The drainage efficiency and cost effectiveness of rainwater and sewage are calculated and output respectively, a comprehensive evaluation result reflecting the sustainability of the whole drainage system is calculated and output in combination with the drainage efficiency and cost effectiveness of rainwater and sewage, and a detailed drainage network optimization design scheme is analyzed and formulated in combination with the drawn line graph. According to the method, innovative means of refined parameters, comprehensive cost-benefit analysis, systematic comprehensive evaluation and an intelligent feedback mechanism are introduced, and a more scientific, comprehensive and efficient solution is provided for planning, design, operation and maintenance of the urban drainage network.

Description

Technical Field

[0001] The invention relates to the technical field of urban drainage optimization, in particular to an urban drainage network optimization design system. Background Art

[0002] As an important part of urban infrastructure, the design and operation efficiency of urban drainage network are directly related to the city's flood control and drainage capacity, water environment quality and residents' quality of life. With the acceleration of urbanization, traditional drainage network design methods can no longer meet the complex and changing urban environmental needs. Therefore, it is particularly important to develop an urban drainage network design system based on scientific evaluation and optimization.

[0003] Specifically, traditional drainage network design methods often only consider the basic physical parameters of pipe size and slope, ignoring the impact of dynamic factors such as rainfall intensity, ground permeability, sewage concentration and pipe cleanliness on drainage efficiency. In cost analysis, they often only focus on construction costs, while ignoring the importance of operating costs and maintenance costs, resulting in poor long-term economic benefits. In addition, there is a lack of a comprehensive evaluation system to comprehensively consider the efficiency, cost and sustainability of the drainage system, making it difficult to provide effective guidance for design optimization. In addition, most existing systems lack an effective feedback mechanism and are unable to adjust design parameters in a timely manner according to the actual operation of the system, affecting the long-term performance of the drainage system. Summary of the invention

[0004] The purpose of the present invention is to provide an urban drainage network optimization design system to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution, and the specific implementation steps are as follows: Step 1: Use the data collection and preprocessing module to collect urban rainfall data, sewage composition and concentration, and basic data of drainage pipes; Step 1-2: Clean and organize the data to form a data set for analysis; Step 2: Using the parameter determination module, determine the intensity of rainfall, the permeability of the ground, the concentration of sewage, and the cleanliness of the pipeline; Step 3: Calculate the drainage efficiency and cost-effectiveness of outputting rainwater and sewage respectively using the comprehensive evaluation and optimization module; Step 3-1: Combine the drainage efficiency and cost-effectiveness of rainwater and sewage, calculate and output the comprehensive evaluation results reflecting the sustainability of the overall drainage system; Step 3-2: Based on the evaluation results and the drawn line graph, analyze and formulate a detailed drainage network optimization design plan; Among them, the comprehensive evaluation and optimization module includes a drainage performance evaluation unit under different conditions of sewage and rainwater, a cost-benefit analysis evaluation unit and an overall performance sustainable comprehensive evaluation unit.

[0006] Optionally, the equipment used in the data collection and preprocessing module includes data acquisition equipment, a pipeline diameter measuring instrument, a slope measuring instrument, a flow meter, and a concentration meter; The equipment used in the comprehensive evaluation and optimization module and the parameter determination module includes high-performance computers, servers, and data analysis and drawing software; The parameter determination module includes a rainfall intensity calculation unit, a ground permeability calculation unit, a sewage concentration calculation unit, and a pipeline cleanliness determination unit.

[0007] Optionally, the calculation formula of the drainage performance evaluation unit under different conditions of sewage and rainwater is as follows: YP=[(L×P×JQ×S) / (L×(1 / Z2))]0.5; WP=[(L×P×WN×Q) / (L×(1 / Z2))]0.5; in: YP is the stormwater drainage efficiency assessment value, and WP is the sewage drainage efficiency assessment value; L is the length of the pipeline; P is the pipeline slope; JQ is the rainfall intensity coefficient, and JQ reflects the impact of rainfall on drainage efficiency; S is the ground permeability coefficient, which reflects the impact of ground infiltration on rainwater discharge; Z is the pipe diameter; WN is the sewage concentration coefficient, which reflects the sewage composition and concentration level of the discharged sewage; Q is the pipeline cleanliness factor.

[0008] Optionally, the calculation formula of the rainfall intensity calculation unit is as follows: JQ=ZJL / JL×b; in; ZJL is the total rainfall; JL is rainfall duration; b is the weight factor, which is used to adjust the impact of different rainfall intensities on the system; The calculation formula of the ground permeability calculation unit is as follows: S=(T×SC) / (A×STC×t); T is the amount of permeate water; SC is the seepage path length; A is the permeable area; STC is the head difference; t is the penetration time.

[0009] Optionally, the calculation formula of the cost-benefit analysis evaluation unit is as follows: YX=YP / [C+(a×L)+(YXY×NY)+(YXW×NW)]; WX=WP / [C+(a×L)+(WXY×NY)+(WXW×NW)]; in: YX is the stormwater cost-benefit assessment value, and WX is the sewage cost-benefit assessment value; C is the pipeline construction cost; a is the cost coefficient per unit length of pipeline; YXY is the operating cost coefficient of the rainwater system; WXY is the sewage system operating cost coefficient; NY is the annual operating cost; YXW is the maintenance cost coefficient of the rainwater system; WXW is the sewage system maintenance cost coefficient; NW is the annual maintenance cost.

[0010] Optionally, the calculation formula of the overall performance sustainable comprehensive evaluation unit is as follows: KCP=λ×YX×(1+YR / 100)+(1+λ)×WX×(1-(WR / 100)×γ)-[(YNW+WNW) / (YP+WP)]; in: KCP is the sustainability assessment value; λ is the weight factor; γ is the additional environmental benefit coefficient, which is mainly used for the additional environmental benefits generated by wastewater treatment, reuse and treatment; YR is the rainwater treatment efficiency, WR is the sewage treatment efficiency; YNW is the annual maintenance cost of the stormwater drainage network. YNW reflects the maintenance and operating expenses of stormwater management facilities in one year; WNW is the annual maintenance cost of the sewage drainage network. WNW reflects the maintenance and operating expenses of sewage treatment facilities within one year.

[0011] Optionally, the analysis and optimization of drawing a line graph based on the sustainability evaluation value KCP and the sustainability evaluation value KCP optimized in the n-times previous cycle is as follows: If the line chart rises significantly and the trend is steep, and Figure 3 As shown, it reflects that the sustainability of the drainage system is significantly improving, and the sewage treatment capacity should be expanded to cope with the increase in sewage discharge in the future; If the line chart fluctuates greatly and Figure 4If the system is affected by external factors and becomes unstable, the equipment maintenance should be strengthened. If the line graph reaches a peak at a certain point and then starts to decline, Figure 5 As shown, it reflects that the current optimal state has been reached, and the current optimized design should be maintained; If the line chart hovers at a lower level and Figure 6 As shown, it not only reflects the poor sustainability of the overall drainage system, but also shows that the system has serious performance bottlenecks and defects. It is necessary to increase investment, optimize system design and improve operation management.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention introduces the parameters of rainfall intensity coefficient JQ, ground permeability coefficient S, sewage concentration coefficient WN and pipeline cleanliness coefficient Q to make the drainage efficiency evaluation more refined and scientific. The introduction of these parameters is based on the calculation in the drainage performance evaluation unit under different conditions of sewage and rainwater, which can more accurately reflect the actual drainage conditions and thus improve the design accuracy.

[0013] 2. In the cost-benefit analysis, the present invention not only considers the construction cost, but also introduces the operating cost coefficient and maintenance cost coefficient of rainwater and sewage, thereby realizing the comprehensiveness of cost evaluation. This improvement is based on the cost-benefit analysis evaluation unit and helps to optimize resource allocation and improve economic benefits.

[0014] 3. The present invention establishes a sustainable comprehensive evaluation system formed by an overall performance sustainable comprehensive evaluation unit. By comprehensively considering drainage efficiency, cost and sustainability, it provides comprehensive guidance for the design optimization of the drainage network. The evaluation results of the sustainability evaluation value KCP will be directly fed back to the design parameter adjustment, forming a closed-loop optimization mechanism to improve design efficiency and system performance.

[0015] 4. The present invention finds the optimal drainage system design parameters by simulating the sustainability evaluation value KCP value under different parameter combinations. This feedback mechanism is based on the comprehensive evaluation results of the overall performance sustainability comprehensive evaluation unit under n-cycle optimization, and combines intelligent algorithms and data analysis and drawing technology to achieve automatic optimization and adjustment of design parameters. The ups and downs of the lines intuitively reflect the trend of the evaluation value changing with the changes in each parameter, thereby improving the adaptability and flexibility of the drainage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Flowchart of the method for optimizing the design system of the city's drainage network; Figure 2 It is a structural schematic diagram of the comprehensive evaluation and optimization module of the present invention; Figure 3This is a line diagram of the present invention. Figure 1 ; Figure 4 This is a line diagram of the present invention. Figure 2 ; Figure 5 This is a line diagram of the present invention. Figure 3 ; Figure 6 This is a line diagram of the present invention. Figure 4 . DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0018] Regarding this urban drainage network optimization design system, it is different from the traditional drainage network design method. The traditional drainage network design method often ignores the impact of dynamic factors such as rainfall intensity, ground permeability, sewage concentration and pipe cleanliness on drainage efficiency, as well as the importance of operating costs and maintenance costs. Therefore, it lacks a comprehensive and effective feedback mechanism evaluation system to comprehensively consider the efficiency, cost and sustainability of the drainage system. This algorithm unit effectively solves the problems and shortcomings of the existing technology by introducing innovative means such as refined parameters, comprehensive cost-benefit analysis, systematic comprehensive evaluation and intelligent feedback mechanism, and provides a more scientific, comprehensive and efficient solution for the planning, design, operation and maintenance of urban drainage networks.

[0019] For example, see Figures 1 to 6 , this implementation provides an urban drainage network optimization design system, and the specific implementation steps are as follows: Step 1: Use the data collection and preprocessing module to collect urban rainfall data, sewage composition and concentration, and basic data of drainage pipes; Step 1-2: Clean and organize the data to form a data set for analysis; Step 2: Using the parameter determination module, determine the intensity of rainfall, the permeability of the ground, the concentration of sewage, and the cleanliness of the pipeline; Step 3: Calculate the drainage efficiency and cost-effectiveness of outputting rainwater and sewage respectively using the comprehensive evaluation and optimization module; Step 3-1: Combine the drainage efficiency and cost-effectiveness of rainwater and sewage, calculate and output the comprehensive evaluation results reflecting the sustainability of the overall drainage system; Step 3-2: Based on the evaluation results and the drawn line graph, analyze and formulate a detailed drainage network optimization design plan; The comprehensive evaluation and optimization module includes a drainage performance evaluation unit under different conditions of sewage and rainwater, a cost-benefit analysis evaluation unit and an overall performance sustainable comprehensive evaluation unit; The equipment used in the data collection and preprocessing module includes data acquisition equipment, pipeline diameter measuring instrument, slope measuring instrument, flow meter, and concentration meter; The equipment used in the comprehensive evaluation and optimization module and the parameter determination module include high-performance computers, servers, and data analysis and drawing software; The parameter determination module includes a rainfall intensity calculation unit, a ground permeability calculation unit, a sewage concentration calculation unit, and a pipeline cleanliness determination unit.

[0020] In this embodiment, the system achieves the evaluation of the efficiency, cost-effectiveness and sustainability of the drainage system through the mutual cooperation of three algorithm units. Combining the five operation results of YP and WP, ​​YX and WX and KCP, they together constitute the core part of the urban drainage network optimization design system, providing strong support for the scientific design, reasonable investment and continuous optimization of the drainage system. YP is the evaluation value of rainwater drainage efficiency, WP is the evaluation value of sewage drainage efficiency. This unit provides a scientific basis for the design and optimization of the drainage system. By comparing the drainage efficiency of different design schemes, the optimal scheme can be selected to improve the overall performance of the drainage system. , YX is the rainwater cost-benefit assessment value, WX is the sewage cost-benefit assessment value, cost-benefit analysis helps decision makers make reasonable investment decisions under limited budgets, KCP is the sustainability assessment value, and its comprehensive assessment results provide direction for the continuous improvement and optimization of the drainage system. KCP and the calculation results of the previous n times of KCP can also affect the calculation of YP and WP, ​​YX and WX. After optimization, the three algorithm units of this system more comprehensively consider the characteristics of rainwater and sewage drainage systems, cost factors and their mutual influence, providing a more scientific basis for the design and optimization of drainage networks.

[0021] See also Figures 1 to 6 , the calculation formula of the drainage performance evaluation unit under different conditions of sewage and rainwater is as follows: YP=[(L×P×JQ×S) / (L×(1 / Z2))]0.5; WP=[(L×P×WN×Q) / (L×(1 / Z2))]0.5; in: YP is the stormwater drainage efficiency assessment value, and WP is the sewage drainage efficiency assessment value; L is the length of the pipeline; P is the pipeline slope; JQ is the rainfall intensity coefficient, and JQ reflects the impact of rainfall on drainage efficiency; S is the ground permeability coefficient, which reflects the impact of ground infiltration on rainwater discharge; Z is the pipe diameter; WN is the sewage concentration coefficient, which reflects the sewage composition and concentration level of the discharged sewage; Q is the pipeline cleanliness factor.

[0022] In this embodiment: first, by introducing the rainfall intensity coefficient JQ and the ground permeability coefficient S, the algorithm unit can accurately simulate the rainwater infiltration and accumulation under different rainfall conditions, so as to more accurately evaluate the rainwater drainage efficiency evaluation value YP. At the same time, the introduction of the sewage concentration coefficient WN and the pipeline cleanliness coefficient Q enables the evaluation of the sewage drainage efficiency evaluation value WP to take into account the actual influence of water quality and pipeline status. Compared with the traditional method, this refined evaluation reduces the evaluation error caused by ignoring key factors and improves the reliability and practicality of the evaluation results. The evaluation results of this algorithm unit not only provide direct feedback on the performance of the drainage system, but also provide a scientific basis for design optimization. For example, in areas with high rainfall intensity, the evaluation results will show that the existing drainage system has bottlenecks, thereby guiding designers to optimize the system by increasing pipe diameters, adjusting pipe layouts, and adopting more efficient drainage facilities. Based on the drainage efficiency evaluation results of different areas, targeted improvement measures can be formulated to ensure that the drainage system can maintain efficient operation under different conditions. By evaluating the drainage efficiency of different areas, this algorithm unit can clarify which areas need more drainage facility investment and which areas are relatively sufficient. This helps to achieve optimal resource allocation in the planning stage and avoid resource waste or shortage. Reasonable resource allocation can not only improve the overall performance of the drainage system, but also reduce future operation and maintenance costs, and achieve long-term economic and environmental benefits.

[0023] See also Figures 1 to 6 , the calculation formula of the cost-benefit analysis evaluation unit is as follows: YX=YP / [C+(a×L)+(YXY×NY)+(YXW×NW)]; WX=WP / [C+(a×L)+(WXY×NY)+(WXW×NW)]; in: YX is the stormwater cost-benefit assessment value, and WX is the sewage cost-benefit assessment value; C is the pipeline construction cost; a is the cost coefficient per unit length of pipeline; YXY is the operating cost coefficient of the rainwater system; WXY is the sewage system operating cost coefficient; NY is the annual operating cost; YXW is the maintenance cost coefficient of the rainwater system; WXW is the sewage system maintenance cost coefficient; NW is the annual maintenance cost.

[0024] In this embodiment, firstly, this cost-benefit analysis evaluation unit not only considers the construction cost, but also introduces the rainwater system operation cost coefficient YXY, the sewage system operation cost coefficient WXY, the rainwater system maintenance cost coefficient YXW and the sewage system maintenance cost coefficient WXW, so as to fully reflect the full life cycle cost of the drainage system, which helps decision makers to more accurately evaluate the economic feasibility of different design schemes. Moreover, by considering the long-term operation cost and maintenance cost, the cost-benefit analysis evaluation unit avoids the short-sighted decision-making that only focuses on the construction cost, and ensures the economic sustainability of the drainage system. This unit compares the cost-benefit ratios of different design options, allowing the cost-benefit analysis and evaluation unit to identify the most cost-effective option, which helps to reduce the life cycle cost while ensuring the performance of the drainage system. Based on the cost-benefit analysis, the designer can flexibly adjust the design plan according to the actual situation to achieve the optimization of the cost structure; Finally, after comprehensively considering the cost factors, designers can reduce the life cycle cost of the drainage system by optimizing the design scheme, which can not only improve economic benefits, but also free up more funds for the construction of other urban infrastructure. In the context of rapid urbanization, low-cost and high-efficiency drainage systems can enhance the competitiveness of cities and attract more investment and talents. It is worth noting that the operating cost coefficient YXY of the rainwater system is relatively low, because rainwater usually does not require complex treatment processes before it can be discharged and recycled. The operating cost of the rainwater system mainly includes the power consumption of the pump station, the maintenance of monitoring equipment, and necessary cleaning work. The operating cost coefficient WXY of the sewage system is relatively high, because sewage needs to go through a series of complex treatment processes, such as physical treatment, biological treatment, and chemical treatment, before it can meet the discharge standards and be reused. The operating cost of the sewage system includes the operating costs of the treatment plant, sludge treatment and disposal costs, the maintenance of monitoring equipment, and the wages of employees; The maintenance cost coefficient YXW of the rainwater system includes regular inspection and maintenance of rainwater pipes, rainwater inlets, pump station facilities, as well as cleaning sediments and preventing blockages. In addition, rainwater collection and utilization facilities need to be maintained to ensure their normal operation and effectiveness. The maintenance cost coefficient WXW of the sewage system is usually higher because the sewage system contains more equipment and components, and the treatment process is more complicated. The maintenance cost includes regular inspection and replacement of treatment equipment, cleaning and maintenance of pipes, and treatment and disposal of sludge. The maintenance of the sewage system also requires highly specialized skills and knowledge to ensure the stability of the system and the treatment effect; In summary, the operating and maintenance costs of rainwater and sewage differ in many aspects, which reflect the different needs and challenges of the two in the process of treatment and utilization. In the design and optimization of urban drainage networks, these cost factors need to be fully considered to achieve an economical, efficient and sustainable drainage system.

[0025] See also Figures 1 to 6 , the calculation formula of the overall performance sustainable comprehensive evaluation unit is as follows: KCP=λ×YX×(1+YR / 100)+(1+λ)×WX×(1-(WR / 100)×γ)-[(YNW+WNW) / (YP+WP)]; in: KCP is the sustainability assessment value; λ is the weight factor; γ is the additional environmental benefit coefficient, which is mainly used for the additional environmental benefits generated by wastewater treatment, reuse and treatment; YR is the rainwater treatment efficiency, WR is the sewage treatment efficiency; YNW is the annual maintenance cost of the stormwater drainage network. YNW reflects the maintenance and operating expenses of stormwater management facilities in one year; WNW is the annual maintenance cost of the sewage drainage network. WNW reflects the maintenance and operating expenses of sewage treatment facilities within one year.

[0026] In this embodiment, the overall performance sustainable comprehensive evaluation unit of this algorithm realizes a comprehensive evaluation of the drainage system performance through the sustainability evaluation value KCP. It not only considers the hard indicators of drainage efficiency and cost-effectiveness, but also includes the soft indicators of environmental impact and social acceptance. This multi-dimensional evaluation helps to understand the actual performance of the drainage system more comprehensively. In the comprehensive evaluation process, the overall performance sustainable comprehensive evaluation unit can balance the interests of the government, enterprises, residents and other parties, and ensure that the design plan of the drainage system is both economically efficient and takes into account social and environmental benefits. Based on the evaluation results of the sustainability assessment value KCP, designers can accurately adjust various parameters of the drainage system, including pipe diameter and slope. This precise optimization can maximize the performance of the drainage system and reduce costs. Through continuous iterative evaluation and optimization, the performance of the drainage system can be continuously improved to meet the ever-changing urban needs. The circular feedback mechanism established by the overall performance sustainable comprehensive evaluation unit makes the design, evaluation and optimization of the drainage system form a closed loop. This closed-loop feedback mechanism can promptly discover and solve problems in the design, construction and operation processes. By continuously accumulating experience and knowledge in the evaluation and optimization process, designers can gradually establish a complete drainage system design and operation management system, which will help to improve the level and competitiveness of the entire industry.

[0027] See also Figures 1 to 6 , based on the sustainability evaluation value KCP and the sustainability evaluation value KCP optimized by n previous cycles, the analysis and optimization of the line graph are drawn together as follows: If the line chart rises significantly and the trend is steep, and Figure 3 As shown, it reflects that the sustainability of the drainage system is significantly improving, and the sewage treatment capacity should be expanded to cope with the increase in sewage discharge in the future; If the line chart fluctuates greatly and Figure 4 If the system is affected by external factors and becomes unstable, the equipment maintenance should be strengthened. If the line graph reaches a peak at a certain point and then starts to decline, Figure 5 As shown, it reflects that the current optimal state has been reached, and the current optimized design should be maintained; If the line chart hovers at a lower level and Figure 6 As shown, it not only reflects the poor sustainability of the overall drainage system, but also shows that the system has serious performance bottlenecks and defects. It is necessary to increase investment, optimize system design and improve operation management.

[0028] In this embodiment, this unit is based on the drawing comparison of line graphs. Through the fluctuation of lines, it can intuitively reflect the trend of the evaluation value with the change of each parameter, which is convenient for quickly identifying key influencing factors. The evaluation results of different design schemes are displayed in the same coordinate system, which can be easily compared horizontally to evaluate the advantages and disadvantages of each scheme. Moreover, through line graphs, the impact of future parameter changes on the evaluation value can be predicted, providing a reference for the design and optimization of drainage networks. Specifically, this unit can quickly capture the changing trend of system performance by real-time monitoring of the sustainability assessment value KCP value on the linear graph. This instant feedback enables managers to quickly identify the problem and dynamically adjust the management strategy according to the actual situation, thereby ensuring that the system is always in the optimal operating state. Different sustainability assessment value KCP values ​​correspond to different system problems, such as performance bottlenecks, external interference, and internal equipment aging problems. The circular feedback mechanism helps managers accurately locate the root cause of the problem, so that more targeted improvement measures can be formulated to improve the efficiency and effectiveness of problem solving. Through long-term monitoring and analysis of the sustainability assessment value KCP value, managers can more clearly understand the development trend and potential risks of the system, which helps to formulate a more scientific and reasonable long-term plan to ensure that the system can operate continuously and stably in the future to meet the needs of urban development. The feedback loop mechanism prompts managers to optimize resource allocation according to the actual performance of the system. For example, when the sustainability assessment value KCP is low, the investment and maintenance of the system will be increased. When the system performance is close to the optimal, the managers will consider how to maintain this state and explore the possibility of further improvement. This resource optimization configuration helps to improve the efficiency of resource use and the overall performance of the system. The circular feedback mechanism based on the sustainability assessment value KCP value provides a scientific and objective basis for management decisions. Through data analysis and model prediction, managers can more accurately evaluate the impact and effect of different decision-making plans and choose the best plan. At the same time, the transparency of this decision-making process also helps to enhance the public's trust and support for drainage system management. When the system performance reaches a bottleneck or faces new challenges, the feedback loop mechanism will prompt managers to actively seek ways to innovate and upgrade technology. By introducing new technologies, new materials and new design concepts, they can break through the limitations of existing technologies and improve the performance and sustainability of the system. This kind of technological innovation and upgrading not only helps solve current problems, but also lays a solid foundation for the future development of the system. In summary, this circular feedback mechanism has significant beneficial effects in the sustainability assessment of drainage systems. It can improve the operating efficiency of the system, optimize resource allocation, enhance the scientific nature and transparency of decision-making, and promote technological innovation and upgrading.

[0029] For example 2, please refer to Figures 1 to 6 , the calculation formula of rainfall intensity calculation unit is as follows: JQ=ZJL / JL×b; in; ZJL is the total rainfall; JL is rainfall duration; b is the weight factor, which is used to adjust the impact of different rainfall intensities on the system; The calculation formula of the ground permeability calculation unit is as follows: S=(T×SC) / (A×STC×t); T is the amount of permeate water; SC is the seepage path length; A is the permeable area; STC is the head difference; t is the penetration time.

[0030] In this embodiment, by accurately calculating these coefficients, the operation status of the drainage system under different conditions can be more accurately reflected. For example, the rainfall intensity coefficient can take into account the intensity and frequency of rainfall, so as to more accurately evaluate the impact of rainfall on the drainage system. The ground permeability coefficient provides information on the ability of soil and ground materials to allow water to penetrate, which helps to evaluate the effect of rainwater infiltration on reducing the pressure on the drainage system. The evaluation results can provide an important basis for the design and optimization of the drainage system. For example, if it is found that the pipeline cleanliness coefficient in a certain area is low, it means that there are more sediments on the inner wall of the pipeline in this area, and it may be necessary to increase the cleaning frequency and take other maintenance measures. The evaluation results of the sewage concentration coefficient can help determine whether it is necessary to upgrade the sewage treatment facilities to meet higher emission standards or respond to changes in pollutant concentrations. Taking rainfall intensity and ground permeability into consideration, the resources of the drainage system can be more reasonably allocated. For example, drainage capacity can be increased during peak rainfall periods, and rainwater infiltration facilities can be added in areas with good permeability, thereby improving the overall efficiency of the system. The evaluation and optimization of pipeline cleanliness can help reduce blockage and overflow events and maintain the smooth operation of the drainage system. The evaluation and control of sewage concentration coefficients can help reduce pollutant emissions and protect water bodies from pollution. The improvement of ground permeability coefficients can promote the natural infiltration of rainwater and recharge of groundwater, which helps maintain ecological balance and the stability of groundwater levels. The evaluation results can also provide data support for urban planning and policy making. For example, the government can formulate corresponding drainage facility construction and management policies based on the drainage performance evaluation results of different regions to promote the sustainable development of cities. In summary, substituting the calculated coefficients and indicators into the drainage performance evaluation can not only improve the accuracy of the evaluation and the rationality of the system design, but also improve the operating efficiency of the system, enhance the environmental protection effect, and provide strong support for policy making.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An urban drainage network optimization design system, characterized in that: The specific implementation steps are as follows: Step 1: Use the data collection and preprocessing module to collect urban rainfall data, sewage composition and concentration, and basic data of drainage pipes; Step 1-2: Clean and organize the data to form a data set for analysis; Step 2: Using the parameter determination module, determine the intensity of rainfall, the permeability of the ground, the concentration of sewage, and the cleanliness of the pipeline; Step 3: Calculate the drainage efficiency and cost-effectiveness of outputting rainwater and sewage respectively using the comprehensive evaluation and optimization module; Step 3-1: Combine the drainage efficiency and cost-effectiveness of rainwater and sewage, calculate and output the comprehensive evaluation results reflecting the sustainability of the overall drainage system; Step 3-2: Based on the evaluation results and the drawn line graph, analyze and formulate a detailed drainage network optimization design plan; Among them, the comprehensive evaluation and optimization module includes a drainage performance evaluation unit under different conditions of sewage and rainwater, a cost-benefit analysis evaluation unit and an overall performance sustainable comprehensive evaluation unit.

2. The urban drainage network optimization design system according to claim 1, characterized in that: The equipment used in the data collection and preprocessing module includes data acquisition equipment, pipeline diameter measuring instrument, slope measuring instrument, flow meter, and concentration meter; The equipment used by the comprehensive evaluation and optimization module and the parameter determination module include high-performance computers, servers, and data analysis and drawing software.

3. The urban drainage network optimization design system according to claim 2, characterized in that: The parameter determination module includes a rainfall intensity calculation unit, a ground permeability calculation unit, a sewage concentration calculation unit, and a pipeline cleanliness determination unit.

4. The urban drainage network optimization design system according to claim 3 is characterized in that: The calculation formula of the drainage performance evaluation unit under different conditions of sewage and rainwater is as follows: YP=[(L×P×JQ×S) / (L×(1 / Z) 2 ))] 0.5 ; WP=[(L×P×WN×Q) / (L×(1 / Z 2 ))] 0.5 ; in: YP is the stormwater drainage efficiency assessment value, and WP is the sewage drainage efficiency assessment value; L is the length of the pipeline; P is the pipeline slope; JQ is the rainfall intensity coefficient, and JQ reflects the impact of rainfall on drainage efficiency; S is the ground permeability coefficient, which reflects the impact of ground infiltration on rainwater discharge; Z is the pipe diameter; WN is the sewage concentration coefficient, which reflects the sewage composition and concentration level of the discharged sewage; Q is the pipeline cleanliness factor.

5. The urban drainage network optimization design system according to claim 4, characterized in that: The calculation formula of the rainfall intensity calculation unit is as follows: JQ=ZJL / JL×b; in; ZJL is the total rainfall; JL is rainfall duration; b is the weight factor, which is used to adjust the impact of different rainfall intensities on the system; The calculation formula of the ground permeability calculation unit is as follows: S=(T×SC) / (A×STC×t); T is the amount of permeate water; SC is the seepage path length; A is the permeable area; STC is the head difference; t is the penetration time.

6. The urban drainage network optimization design system according to claim 5, characterized in that: The calculation formula of the cost-benefit analysis evaluation unit is as follows: YX=YP / [C+(a×L)+(YXY×NY)+(YXW×NW)]; WX=WP / [C+(a×L)+(WXY×NY)+(WXW×NW)]; in: YX is the stormwater cost-benefit assessment value, and WX is the sewage cost-benefit assessment value; C is the pipeline construction cost; a is the cost coefficient per unit length of pipeline; YXY is the operating cost coefficient of the rainwater system; WXY is the sewage system operating cost coefficient; NY is the annual operating cost; YXW is the maintenance cost coefficient of the rainwater system; WXW is the sewage system maintenance cost coefficient; NW is the annual maintenance cost.

7. The urban drainage network optimization design system according to claim 6, characterized in that: The calculation formula of the overall performance sustainable comprehensive evaluation unit is as follows: KCP=λ×YX×(1+YR / 100)+(1+λ)×WX×(1-(WR / 100)×γ)-[(YNW+WNW) / (YP+WP)]; in: KCP is the sustainability assessment value; λ is the weight factor; γ is the additional environmental benefit coefficient, which is mainly used for the additional environmental benefits generated by wastewater treatment, reuse and treatment; YR is the rainwater treatment efficiency, WR is the sewage treatment efficiency; YNW is the annual maintenance cost of the stormwater drainage network. YNW reflects the maintenance and operating expenses of stormwater management facilities in one year; WNW is the annual maintenance cost of the sewage drainage network. WNW reflects the maintenance and operating expenses of sewage treatment facilities within one year.

8. The urban drainage network optimization design system according to claim 7, characterized in that: Based on the sustainability evaluation value KCP and the sustainability evaluation value KCP optimized in the n-th previous cycle, the analysis and optimization of the line graph drawn together are as follows: If the line graph rises significantly and the trend is steep, it means that the sustainability of the drainage system is improving significantly and the sewage treatment capacity should be expanded to cope with the increase in sewage discharge in the future; If the line graph fluctuates greatly, it means that the system is affected by external factors and becomes unstable, and the equipment maintenance should be strengthened; If the line graph reaches a peak at a certain point and then starts to decline, it means that the current optimal state has been reached and the current optimized design should be maintained; If the line graph hovers at a low level, it reflects the poor sustainability of the overall drainage system and indicates that the system has serious performance bottlenecks and defects. It is necessary to increase investment, optimize system design and improve operational management.

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