Urban drainage network optimization design system

Abstract

The application discloses a kind of urban drainage network optimization design systems, it is related to urban drainage optimization technical field, utilize data collection and pretreatment module, collect basic data, utilize parameter determination module, determine the intensity of rainfall, ground permeability, sewage concentration and the cleanliness of pipeline, utilize comprehensive evaluation optimization module, respectively calculate the drainage efficiency and cost benefit of output rainwater and sewage, combine the drainage efficiency and cost benefit of rainwater and sewage, total calculation and output the comprehensive evaluation result reflecting the sustainability of overall drainage system, and combined with the line graph drawn, detailed drainage network optimization design scheme is analyzed and formulated, the present application introduces the innovative means of fine parameter, comprehensive cost benefit analysis, systematized comprehensive evaluation and intelligent feedback mechanism, provides more scientific, comprehensive and efficient solution for the planning, design, operation and maintenance of urban drainage network.

Description

Technical Field

[0001] The present 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 networks 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 have become difficult to meet the needs of the complex and changing urban environment. 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 and ignore the importance of operating costs and maintenance costs, resulting in poor long-term economic benefits. In turn, 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, which affects 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 background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions, and the specific implementation steps are as follows:

[0006] Step 1: Use the data collection and preprocessing module to collect urban rainfall data, sewage composition and concentration, and basic data on drainage pipes;

[0007] Steps 1-2: Clean and organize the data to form a data set for analysis;

[0008] Step 2: Using the parameter determination module, determine the rainfall intensity, ground permeability, sewage concentration, and pipe cleanliness;

[0009] Step 3: Use the comprehensive evaluation and optimization module to calculate the drainage efficiency and cost-effectiveness of rainwater and sewage output respectively;

[0010] Step 3-1: Combine the drainage efficiency and cost-effectiveness of rainwater and sewage to calculate and output a comprehensive assessment result reflecting the sustainability of the overall drainage system;

[0011] Step 3-2: Based on the assessment results and the drawn line graph, analyze and formulate a detailed drainage network optimization design plan;

[0012] 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.

[0013] Optionally, the equipment used in the data collection and preprocessing module includes data acquisition equipment, a pipe diameter measuring instrument, a slope measuring instrument, a flow meter, and a concentration meter;

[0014] 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;

[0015] 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.

[0016] Optionally, the calculation formula of the drainage performance evaluation unit under different conditions of sewage and rainwater is as follows:

[0017] YP=[(L×P×JQ×S) / (L×(1 / Z2))]0.5;

[0018] WP=[(L×P×WN×Q) / (L×(1 / Z2))]0.5;

[0019] in:

[0020] YP is the rainwater drainage efficiency evaluation value, and WP is the sewage drainage efficiency evaluation value;

[0021] L is the length of the pipeline;

[0022] P is the pipeline slope;

[0023] JQ is the rainfall intensity coefficient, and JQ reflects the impact of rainfall on drainage efficiency;

[0024] S is the ground permeability coefficient, which reflects the impact of ground infiltration on rainwater discharge;

[0025] Z is the pipe diameter;

[0026] WN is the sewage concentration coefficient, which reflects the sewage composition and concentration level of the discharged sewage;

[0027] Q is the pipeline cleanliness factor.

[0028] Optionally, the calculation formula of the rainfall intensity calculation unit is as follows:

[0029] JQ=ZJL / JL×b;

[0030] in;

[0031] ZJL is the total rainfall;

[0032] JL is rainfall duration;

[0033] b is the weight factor, which is used to adjust the impact of different rainfall intensities on the system;

[0034] The calculation formula of the ground permeability calculation unit is as follows:

[0035] S=(T×SC) / (A×STC×t);

[0036] T is the amount of permeate water;

[0037] SC is the seepage path length;

[0038] A is the permeable area;

[0039] STC is the head difference;

[0040] t is the penetration time.

[0041] Optionally, the calculation formula of the cost-benefit analysis evaluation unit is as follows:

[0042] YX=YP / [C+(a×L)+(YXY×NY)+(YXW×NW)];

[0043] WX=WP / [C+(a×L)+(WXY×NY)+(WXW×NW)];

[0044] in:

[0045] YX is the cost-benefit assessment value for rainwater, and WX is the cost-benefit assessment value for sewage;

[0046] C is the pipeline construction cost;

[0047] a is the cost coefficient per unit length of pipeline;

[0048] YXY is the operating cost coefficient of the rainwater system;

[0049] WXY is the sewage system operating cost coefficient;

[0050] NY is the annual operating cost;

[0051] YXW is the maintenance cost coefficient of the rainwater system;

[0052] WXW is the sewage system maintenance cost coefficient;

[0053] NW is the annual maintenance cost.

[0054] Optionally, the calculation formula of the overall performance sustainable comprehensive evaluation unit is as follows:

[0055] KCP=λ×YX×(1+YR / 100)+(1+λ)×WX×(1-(WR / 100)×γ)-[(YNW+WNW) / (YP+WP)];

[0056] in:

[0057] KCP is the sustainability assessment value;

[0058] λ is the weight factor;

[0059] γ is the additional environmental benefit coefficient, which is mainly used to represent the additional environmental benefits generated by wastewater treatment, reuse and disposal;

[0060] YR is the rainwater treatment efficiency, WR is the sewage treatment efficiency;

[0061] 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;

[0062] 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.

[0063] 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 n previous cycles is as follows:

[0064] If the line chart rises significantly and the trend is steep, and Figure 3 As shown, this reflects that the sustainability of the drainage system has been significantly improved, and the sewage treatment capacity should be expanded to cope with the increase in sewage discharge in the future;

[0065] If the line chart fluctuates greatly and Figure 4 As shown, it reflects that the system is affected by external factors and becomes unstable, and the maintenance and care of the equipment should be strengthened;

[0066] If the line graph reaches a peak at a certain point and then starts to decline, and Figure 5 As shown, it reflects that the current optimal state has been reached, and the current optimized design should be maintained;

[0067] If the line chart hovers at a lower level and Figure 6 As shown, this not only reflects the poor sustainability of the overall drainage system, but also indicates that the system has serious performance bottlenecks and defects. It is necessary to increase investment, optimize system design, and improve operation and management.

[0068] Compared with the prior art, the present invention has the following beneficial effects:

[0069] 1. The present invention introduces parameters such as rainfall intensity coefficient JQ, ground permeability coefficient S, sewage concentration coefficient WN, and pipe cleanliness coefficient Q to make drainage efficiency evaluation more refined and scientific. The introduction of these parameters is based on calculations within the drainage performance evaluation unit under different conditions of sewage and rainwater, which can more accurately reflect actual drainage conditions and thus improve design accuracy.

[0070] 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.

[0071] 3. The present invention establishes a comprehensive sustainability 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 into the adjustment of design parameters, forming a closed-loop optimization mechanism to improve design efficiency and system performance.

[0072] 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 realize automatic optimization and adjustment of design parameters. The fluctuations of the lines intuitively reflect the trend of the evaluation value changing with the parameters, thereby improving the adaptability and flexibility of the drainage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1 Flowchart of the method for optimizing the design system of the city's drainage network;

[0074] Figure 2 This is a schematic diagram of the structure of the comprehensive evaluation and optimization module of the present invention;

[0075] Figure 3 This is a line diagram of the present invention Figure 1 ;

[0076] Figure 4 This is a line diagram of the present invention Figure 2 ;

[0077] Figure 5 This is a line diagram of the present invention Figure 3 ;

[0078] Figure 6 This is a line diagram of the present invention Figure 4 . DETAILED DESCRIPTION

[0079] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0080] Regarding this urban drainage network optimization design system, it is different from traditional drainage network design methods. Traditional drainage network design methods often ignore 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, there is a lack of 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 existing technologies by introducing innovative means such as refined parameters, comprehensive cost-benefit analysis, systematic comprehensive evaluation and intelligent feedback mechanism, providing a more scientific, comprehensive and efficient solution for the planning, design, operation and maintenance of urban drainage networks.

[0081] For example 1, please refer to Figures 1 to 6 , this implementation provides an urban drainage network optimization design system, the specific implementation steps are as follows:

[0082] Step 1: Use the data collection and preprocessing module to collect urban rainfall data, sewage composition and concentration, and basic data on drainage pipes;

[0083] Steps 1-2: Clean and organize the data to form a data set for analysis;

[0084] Step 2: Using the parameter determination module, determine the rainfall intensity, ground permeability, sewage concentration, and pipe cleanliness;

[0085] Step 3: Use the comprehensive evaluation and optimization module to calculate the drainage efficiency and cost-effectiveness of rainwater and sewage output respectively;

[0086] Step 3-1: Combine the drainage efficiency and cost-effectiveness of rainwater and sewage to calculate and output a comprehensive assessment result reflecting the sustainability of the overall drainage system;

[0087] Step 3-2: Based on the assessment results and the drawn line graph, analyze and formulate a detailed drainage network optimization design plan;

[0088] 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;

[0089] The equipment used in the data collection and preprocessing module includes data acquisition equipment, pipeline diameter measuring instruments, slope measuring instruments, flow meters, and concentration meters;

[0090] 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;

[0091] 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.

[0092] 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 calculation 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 rainwater drainage efficiency evaluation value, and WP is the sewage drainage efficiency evaluation value. 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 evaluation value, WX is the sewage cost-benefit evaluation value, cost-benefit analysis helps decision makers make reasonable investment decisions under limited budgets, KCP is the sustainability evaluation value, and its comprehensive evaluation results provide direction for the continuous improvement and optimization of the drainage system. The calculation results of KCP and the previous n times of KCP can also affect the feedback to the calculation of YP and WP, ​​YX and WX. After optimization, the three algorithm units of this system more comprehensively consider the characteristics, cost factors and mutual influence of rainwater and sewage drainage systems, providing a more scientific basis for the design and optimization of drainage networks.

[0093] 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:

[0094] YP=[(L×P×JQ×S) / (L×(1 / Z2))]0.5;

[0095] WP=[(L×P×WN×Q) / (L×(1 / Z2))]0.5;

[0096] in:

[0097] YP is the rainwater drainage efficiency evaluation value, and WP is the sewage drainage efficiency evaluation value;

[0098] L is the length of the pipeline;

[0099] P is the pipeline slope;

[0100] JQ is the rainfall intensity coefficient, and JQ reflects the impact of rainfall on drainage efficiency;

[0101] S is the ground permeability coefficient, which reflects the impact of ground infiltration on rainwater discharge;

[0102] Z is the pipe diameter;

[0103] WN is the sewage concentration coefficient, which reflects the sewage composition and concentration level of the discharged sewage;

[0104] Q is the pipeline cleanliness factor.

[0105] In this embodiment, the algorithm unit introduces the rainfall intensity coefficient JQ and the ground permeability coefficient S to accurately simulate rainwater infiltration and accumulation under different rainfall conditions, thereby more accurately evaluating the rainwater drainage efficiency assessment value YP. Furthermore, the introduction of the sewage concentration coefficient WN and the pipe cleanliness coefficient Q allows the sewage drainage efficiency assessment value WP to take into account the actual impact of water quality and pipe status. Compared with traditional methods, this refined assessment reduces assessment errors caused by ignoring key factors and improves the reliability and practicality of the assessment results.

[0106] The evaluation results of this algorithm unit not only provide direct feedback on drainage system performance but also provide a scientific basis for design optimization. For example, in areas with high rainfall intensity, the evaluation results will indicate bottlenecks in the existing drainage system, thereby guiding designers to optimize the system by increasing pipe diameters, adjusting pipe layouts, and adopting more efficient drainage facilities. The drainage efficiency evaluation results of different regions can be used to formulate targeted improvement measures to ensure that the drainage system maintains efficient operation under different conditions.

[0107] By evaluating the drainage efficiency of different areas, this algorithm unit can clearly identify which areas require more investment in drainage facilities and which areas are relatively sufficient. This helps to optimize 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, achieving long-term economic and environmental benefits.

[0108] See also Figures 1 to 6 , the calculation formula of the cost-benefit analysis evaluation unit is as follows:

[0109] YX=YP / [C+(a×L)+(YXY×NY)+(YXW×NW)];

[0110] WX=WP / [C+(a×L)+(WXY×NY)+(WXW×NW)];

[0111] in:

[0112] YX is the cost-benefit assessment value for rainwater, and WX is the cost-benefit assessment value for sewage;

[0113] C is the pipeline construction cost;

[0114] a is the cost coefficient per unit length of pipeline;

[0115] YXY is the operating cost coefficient of the rainwater system;

[0116] WXY is the sewage system operating cost coefficient;

[0117] NY is the annual operating cost;

[0118] YXW is the maintenance cost coefficient of the rainwater system;

[0119] WXW is the sewage system maintenance cost coefficient;

[0120] NW is the annual maintenance cost.

[0121] In this embodiment, first, the cost-benefit analysis evaluation unit not only considers construction costs, but also introduces the rainwater system operating cost coefficient YXY, the sewage system operating cost coefficient WXY, the rainwater system maintenance cost coefficient YXW, and the sewage system maintenance cost coefficient WXW, thereby comprehensively reflecting the full life cycle cost of the drainage system. This helps decision makers more accurately evaluate the economic feasibility of different design options. By considering long-term operating costs and maintenance costs, the cost-benefit analysis evaluation unit avoids short-sighted decisions that focus only on construction costs, ensuring the economic sustainability of the drainage system.

[0122] This unit compares the cost-benefit ratios of different design options, enabling the cost-benefit analysis and evaluation unit to identify the most cost-effective option. This helps reduce the lifecycle cost while ensuring the performance of the drainage system. Based on the cost-benefit analysis, designers can flexibly adjust the design according to actual conditions to achieve cost optimization.

[0123] Finally, by comprehensively considering cost factors, designers can optimize their design to reduce the lifecycle cost of drainage systems. This not only improves economic efficiency but also frees up funds for the construction of other urban infrastructure. In the context of rapid urbanization, low-cost, high-efficiency drainage systems can enhance a city's competitiveness and attract more investment and talent.

[0124] 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 costs of the rainwater system mainly include the electricity consumption of the pumping station, the maintenance of monitoring equipment, and necessary cleanup work. The operating cost coefficient WXY of the sewage system is relatively high, because sewage needs to undergo a series of complex treatment processes, such as physical treatment, biological treatment, and chemical treatment, before it can meet discharge standards and be reused. The operating costs of the sewage system include the operating expenses of the treatment plant, sludge treatment and disposal costs, the maintenance of monitoring equipment, and employee wages.

[0125] The rainwater system maintenance cost coefficient YXW includes regular inspection and maintenance of rainwater pipes, rainwater inlets, pumping station facilities, as well as the cleaning of sediment and prevention of blockages. In addition, rainwater collection and utilization facilities need to be maintained to ensure their normal operation and effectiveness. The sewage system maintenance cost coefficient WXW is usually higher because sewage systems contain more equipment and components and the treatment process is more complex. Maintenance costs include regular inspection and replacement of treatment equipment, cleaning and repair of pipes, and sludge treatment and disposal. Sewage system maintenance also requires highly specialized skills and knowledge to ensure system stability and treatment effectiveness.

[0126] In summary, the operating and maintenance costs of rainwater and sewage differ in many aspects. These differences 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.

[0127] See also Figures 1 to 6 , the calculation formula of the overall performance sustainable comprehensive evaluation unit is as follows:

[0128] KCP=λ×YX×(1+YR / 100)+(1+λ)×WX×(1-(WR / 100)×γ)-[(YNW+WNW) / (YP+WP)];

[0129] in:

[0130] KCP is the sustainability assessment value;

[0131] λ is the weight factor;

[0132] γ is the additional environmental benefit coefficient, which is mainly used to represent the additional environmental benefits generated by wastewater treatment, reuse and disposal;

[0133] YR is the rainwater treatment efficiency, WR is the sewage treatment efficiency;

[0134] 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;

[0135] 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.

[0136] In this embodiment, the overall performance sustainability comprehensive evaluation unit of this algorithm uses the sustainability evaluation value KCP to achieve a comprehensive assessment of drainage system performance. It not only considers the hard indicators of drainage efficiency and cost-effectiveness, but also includes soft indicators such as environmental impact and social acceptance. This multi-dimensional assessment helps to more comprehensively understand the actual performance of the drainage system. During the comprehensive evaluation process, the overall performance sustainability comprehensive evaluation unit can balance the interests of various parties such as the government, enterprises, and residents, ensuring that the drainage system design plan is both economically efficient and takes into account social and environmental benefits.

[0137] Based on the KCP assessment results, designers can precisely adjust various drainage system parameters, including pipe diameter and slope. This precise optimization can maximize drainage system performance and reduce costs. Through continuous iterative evaluation and optimization, drainage system performance can be continuously improved to meet changing urban needs.

[0138] The circular feedback mechanism established by the overall performance sustainable comprehensive evaluation unit forms a closed loop for the design, evaluation and optimization of the drainage system. This closed-loop feedback mechanism can promptly identify and resolve 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.

[0139] 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:

[0140] If the line chart rises significantly and the trend is steep, and Figure 3 As shown, this reflects that the sustainability of the drainage system has been significantly improved, and the sewage treatment capacity should be expanded to cope with the increase in sewage discharge in the future;

[0141] If the line chart fluctuates greatly and Figure 4 As shown, it reflects that the system is affected by external factors and becomes unstable, and the maintenance and care of the equipment should be strengthened;

[0142] If the line graph reaches a peak at a certain point and then starts to decline, and Figure 5 As shown, it reflects that the current optimal state has been reached, and the current optimized design should be maintained;

[0143] If the line chart hovers at a lower level and Figure 6 As shown, this not only reflects the poor sustainability of the overall drainage system, but also indicates that the system has serious performance bottlenecks and defects. It is necessary to increase investment, optimize system design, and improve operation and management.

[0144] In this embodiment, this unit is based on the drawing and comparison of line graphs. Through the fluctuation of the 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 easily make horizontal comparisons and evaluate the advantages and disadvantages of each scheme. Moreover, through the line graph, it is possible to predict the impact of future parameter changes on the evaluation value, providing a reference for the design and optimization of the drainage network.

[0145] Specifically, this unit can quickly capture the changing trends 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 problems and dynamically adjust management strategies according to actual conditions, 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. The circular feedback mechanism helps managers accurately locate the root causes of the problems, so that they can formulate more targeted improvement measures and improve the efficiency and effectiveness of problem solving. Through long-term monitoring and analysis of the sustainability assessment value KCP value, managers can have a clearer understanding of the development trends and potential risks of the system, which helps to formulate more scientific and reasonable long-term plans to ensure that the system can operate continuously and stably in the future to meet the needs of urban development.

[0146] The feedback loop encourages managers to optimize resource allocation based on the actual performance of the system. For example, when the sustainability assessment value (KCP) is low, they will increase investment and maintenance efforts in the system. When the system performance is close to optimal, they will consider how to maintain this state and explore the possibility of further improvement. This optimal resource allocation helps improve resource utilization efficiency and overall system performance.

[0147] The circular feedback mechanism based on the sustainability assessment value (KCP) provides a scientific and objective basis for management decisions. Through data analysis and model prediction, managers can more accurately assess the impact and effectiveness of different decision-making options and select the optimal one. At the same time, the transparency of this decision-making process also helps to enhance public trust and support for drainage system management.

[0148] When system performance reaches a bottleneck or faces new challenges, the feedback loop prompts 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 system performance and sustainability. This technological innovation and upgrade not only helps solve current problems but also lays a solid foundation for the future development of the system.

[0149] 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.

[0150] For example 2, please refer to Figures 1 to 6 , the calculation formula of the rainfall intensity calculation unit is as follows:

[0151] JQ=ZJL / JL×b;

[0152] in;

[0153] ZJL is the total rainfall;

[0154] JL is rainfall duration;

[0155] b is the weight factor, which is used to adjust the impact of different rainfall intensities on the system;

[0156] The calculation formula of the ground permeability calculation unit is as follows:

[0157] S=(T×SC) / (A×STC×t);

[0158] T is the amount of permeate water;

[0159] SC is the seepage path length;

[0160] A is the permeable area;

[0161] STC is the head difference;

[0162] t is the penetration time.

[0163] In this embodiment, by accurately calculating these coefficients, the operating 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, thereby more accurately evaluating 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 is a lot of sediment 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 account can more rationally allocate drainage system resources. 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 assessment and optimization of pipe cleanliness can help reduce blockages and overflows, maintaining the smooth operation of the drainage system. The assessment and control of sewage concentration coefficients can help reduce pollutant emissions and protect water bodies from pollution. Improving the ground permeability coefficient can promote the natural infiltration of rainwater and recharge groundwater, helping to maintain ecological balance and groundwater level stability. The assessment 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 assessment results of different regions to promote the sustainable development of the city.

[0164] 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.

[0165] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the 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 on drainage pipes; Steps 1-2: Clean and organize the data to form a data set for analysis; Step 2: Using the parameter determination module, determine the rainfall intensity, ground permeability, sewage concentration, and pipe cleanliness; Step 3-1: Use the comprehensive evaluation and optimization module to calculate the drainage efficiency and cost-effectiveness of rainwater and sewage output respectively; Step 3-1: Combine the drainage efficiency and cost-effectiveness of rainwater and sewage to calculate and output a comprehensive assessment result reflecting the sustainability of the overall drainage system; Step 3-3: Based on the assessment 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 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 rainwater drainage efficiency evaluation value, and WP is the sewage drainage efficiency evaluation 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; 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; 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 cost-benefit assessment value for rainwater, and WX is the cost-benefit assessment value for sewage; 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 rainwater system maintenance cost coefficient; WXW is the sewage system maintenance cost coefficient; NW is the annual maintenance cost; 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 to represent the additional environmental benefits generated by wastewater treatment, reuse and disposal; 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 in one year; 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 drawn together are as follows: If the line graph shows a significant upward trend and a steep trend, it indicates that the sustainability of the drainage system is significantly improving and that sewage treatment capacity should be expanded to cope with future increases in sewage discharge. 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 begins 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 not only reflects the poor sustainability of the overall drainage system, but also indicates that the system has serious performance bottlenecks and defects. It is necessary to increase investment, optimize system design, and improve operation and management.

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.

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