A water network space optimization method and apparatus

Abstract

The application provides a water network space optimization method and device, wherein, based on each space optimization measure, an initial water network space is optimized to obtain several optimized water network spaces; each optimized water network space is subjected to implementation feasibility evaluation to obtain implementation feasibility evaluation results of each optimized water network space; a space optimization scheme of the initial water network space is determined based on the implementation feasibility evaluation results of each optimized water network space; and based on the space optimization scheme, the initial water network space is optimized to obtain a target water network space. The above method can improve the implementation feasibility and optimization effect of water network space optimization.

Description

Technical Field

[0001] This invention relates to the field of intelligent ecological environment management, and more specifically, to a method and apparatus for optimizing water network space. Background Technology

[0002] In the fields of water conservancy engineering and urban planning, optimizing water network space is a core task for enhancing urban resilience and ensuring ecological security. Existing water network space optimization technologies mostly rely on engineering experience or subjective judgment to select optimization measures, such as river widening and shoreline hardening, lacking a scientific and quantitative evaluation system to support them.

[0003] However, the study found that the aforementioned experience-based optimization process often overlooks key implementation conditions such as land ownership, construction costs, and policy restrictions, equating "experience-based feasibility" with "practical feasibility." Specifically, river rerouting schemes selected based on experience may involve the acquisition of large amounts of collective land or face high demolition costs when implemented in densely built-up areas. Experience-based judgments cannot quantify these hidden obstacles, leading to the scheme being forced to be shelved or significantly adjusted after entering the implementation stage due to infeasibility, resulting in a waste of planning resources.

[0004] Furthermore, experience-driven technical approaches lack a closed-loop mechanism of "assessment-simulation-optimization," making it impossible to use data models to predict the ecological and spatial effects of optimization measures, such as the impact of hydrodynamic changes on water quality and the impact of shoreline adjustments on waterfront spaces. Measures selected solely based on experience may introduce new problems, such as the fragmentation of biological habitats due to indiscriminate river connectivity and the destruction of water bodies' self-purification capacity by hardening shorelines. Moreover, it is difficult to correct these issues through dynamic feedback after implementation, ultimately leading to the failure to effectively achieve the goals of water network optimization. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a method and apparatus for optimizing water network space, so as to improve the feasibility and optimization effect of water network space optimization.

[0006] In a first aspect, embodiments of this application provide a method for optimizing water network space, the method comprising:

[0007] Based on various spatial optimization measures, the initial water network space is spatially optimized to obtain several optimized water network spaces;

[0008] Feasibility assessments were conducted on each optimized water network space to obtain the feasibility assessment results for each optimized water network space.

[0009] Based on the feasibility assessment results of each optimized water network space, the spatial optimization scheme of the initial water network space is determined;

[0010] Based on the aforementioned spatial optimization scheme, the initial water network space is spatially optimized to obtain the target water network space.

[0011] Optionally, the method further includes:

[0012] An ecological security assessment is conducted on the initial water network space and the target water network space to obtain the ecological security assessment results of the initial water network space and the target water network space, respectively.

[0013] The optimization effect of the spatial optimization scheme is evaluated based on the ecological security assessment results of the initial water network space and the ecological security assessment results of the target water network space.

[0014] Optionally, the initial water network space is spatially optimized based on various spatial optimization measures to obtain several optimized water network spaces, including:

[0015] The initial river and canal baseline and the initial river and lake management area line in the initial water network space are identified. Based on the initial river and canal baseline and the initial river and lake management area line, the core indicators of the initial water network space are determined, wherein the core indicators include water surface ratio and water network density.

[0016] The first optimized water network space is obtained by optimizing the initial river baseline and the initial river and lake management scope line in the initial water network space according to the pre-configured water network planning coordination rules.

[0017] Based on the core indicators of the initial water network space, the initial river baseline and the initial river and lake management scope line in the initial water network space are optimized to obtain the second optimized water network space.

[0018] Optionally, the feasibility assessment of each optimized water network space, to obtain the feasibility assessment results for each optimized water network space, includes:

[0019] For each optimized water network space, an influencing factor is assigned based on the surrounding environmental conditions, and an influencing factor weight is assigned to each influencing factor.

[0020] The influence score of each optimized water network space is determined based on the influence factors of each optimized water network space and the influence factor weight of each influence factor.

[0021] The feasibility assessment results for each optimized water network space are determined based on the impact score and the preset score range.

[0022] Optionally, determining the implementation feasibility assessment results for each optimized water network space based on its impact score and a preset score range includes:

[0023] Determine whether the impact score of each optimized water network space is within the preset score range;

[0024] The feasibility assessment results of the target optimized water network space whose impact score is within the preset score range are determined to be feasible for implementation;

[0025] The feasibility assessment results for optimizing water network space whose impact score is not within the preset score range are determined to be not feasible.

[0026] The spatial optimization scheme for the initial water network space is determined based on the feasibility assessment results of each optimized water network space, including:

[0027] The spatial optimization scheme is determined based on the spatial optimization measures obtained for the target water network space.

[0028] Optionally, the ecological security assessment results include water environment constraint zoning, hydrodynamic and water quality conditions, and urban flooding risk; the ecological security assessment of the initial water network space and the target water network space, respectively obtaining the ecological security assessment results of the initial water network space and the target water network space, includes:

[0029] Based on the water environment capacity and water environment pressure of the initial water network space and the target water network space, the water environment constraint zoning of the initial water network space and the water environment constraint zoning of the target water network space are determined.

[0030] A one-dimensional hydrodynamic mathematical model was used to determine the hydrodynamic and water quality conditions of the initial water network space and the target water network space.

[0031] Based on the waterlogging risk factors and risk factor weights of the initial water network space and the target water network space, the waterlogging risk status of the initial water network space and the target water network space are determined.

[0032] Optionally, the evaluation of the optimization effect of the spatial optimization scheme based on the ecological security assessment results of the initial water network space and the ecological security assessment results of the target water network space includes:

[0033] The ecological security assessment results of the initial water network space are compared with the ecological security assessment results of the target water network space to obtain the actual comparison results;

[0034] The optimization effect of the spatial optimization scheme is determined based on the actual comparison results and the expected comparison results.

[0035] Secondly, embodiments of this application provide a water network space optimization device, the device comprising:

[0036] The optimized water network space determination module is used to optimize the initial water network space based on various spatial optimization measures to obtain several optimized water network spaces.

[0037] The implementation feasibility assessment result determination module is used to conduct implementation feasibility assessments on each optimized water network space and obtain the implementation feasibility assessment results for each optimized water network space.

[0038] The spatial optimization scheme determination module is used to determine the spatial optimization scheme of the initial water network space based on the implementation feasibility assessment results of each optimized water network space;

[0039] The target water network space determination module is used to perform spatial optimization on the initial water network space based on the spatial optimization scheme to obtain the target water network space.

[0040] Optionally, the device further includes:

[0041] An ecological security assessment result determination module is used to conduct ecological security assessments on the initial water network space and the target water network space, and obtain the ecological security assessment results of the initial water network space and the ecological security assessment results of the target water network space, respectively.

[0042] The optimization effect evaluation module is used to evaluate the optimization effect of the spatial optimization scheme based on the ecological security assessment results of the initial water network space and the ecological security assessment results of the target water network space.

[0043] Optionally, the initial water network space is spatially optimized based on various spatial optimization measures to obtain several optimized water network spaces, including:

[0044] The initial river and canal baseline and the initial river and lake management area line in the initial water network space are identified. Based on the initial river and canal baseline and the initial river and lake management area line, the core indicators of the initial water network space are determined, wherein the core indicators include water surface ratio and water network density.

[0045] The first optimized water network space is obtained by optimizing the initial river baseline and the initial river and lake management scope line in the initial water network space according to the pre-configured water network planning coordination rules.

[0046] Based on the core indicators of the initial water network space, the initial river baseline and the initial river and lake management scope line in the initial water network space are optimized to obtain the second optimized water network space.

[0047] Optionally, the feasibility assessment of each optimized water network space, to obtain the feasibility assessment results for each optimized water network space, includes:

[0048] For each optimized water network space, an influencing factor is assigned based on the surrounding environmental conditions, and an influencing factor weight is assigned to each influencing factor.

[0049] The influence score of each optimized water network space is determined based on the influence factors of each optimized water network space and the influence factor weight of each influence factor.

[0050] The feasibility assessment results for each optimized water network space are determined based on the impact score and the preset score range.

[0051] Optionally, determining the implementation feasibility assessment results for each optimized water network space based on its impact score and a preset score range includes:

[0052] Determine whether the impact score of each optimized water network space is within the preset score range;

[0053] The feasibility assessment results of the target optimized water network space whose impact score is within the preset score range are determined to be feasible for implementation;

[0054] The feasibility assessment results for optimizing water network space whose impact score is not within the preset score range are determined to be not feasible.

[0055] The spatial optimization scheme for the initial water network space is determined based on the feasibility assessment results of each optimized water network space, including:

[0056] The spatial optimization scheme is determined based on the spatial optimization measures obtained for the target water network space.

[0057] Optionally, the ecological security assessment results include water environment constraint zoning, hydrodynamic and water quality conditions, and urban flooding risk; the ecological security assessment of the initial water network space and the target water network space, respectively obtaining the ecological security assessment results of the initial water network space and the target water network space, includes:

[0058] Based on the water environment capacity and water environment pressure of the initial water network space and the target water network space, the water environment constraint zoning of the initial water network space and the water environment constraint zoning of the target water network space are determined.

[0059] A one-dimensional hydrodynamic mathematical model was used to determine the hydrodynamic and water quality conditions of the initial water network space and the target water network space.

[0060] Based on the waterlogging risk factors and risk factor weights of the initial water network space and the target water network space, the waterlogging risk status of the initial water network space and the target water network space are determined.

[0061] Optionally, the evaluation of the optimization effect of the spatial optimization scheme based on the ecological security assessment results of the initial water network space and the ecological security assessment results of the target water network space includes:

[0062] The ecological security assessment results of the initial water network space are compared with the ecological security assessment results of the target water network space to obtain the actual comparison results;

[0063] The optimization effect of the spatial optimization scheme is determined based on the actual comparison results and the expected comparison results.

[0064] The technical solution provided in this application includes, but is not limited to, the following beneficial effects:

[0065] This application systematically transforms the initial water network space through various spatial optimization measures, generating several optimized water network spaces. This provides diversified candidate solutions for water network optimization, avoiding the limitations of single measures and covering optimization needs from different dimensions. It enhances the comprehensiveness and flexibility of optimization directions, laying the foundation for balancing multiple objectives. Then, a feasibility assessment is conducted on each optimized water network space. By comprehensively considering key factors affecting implementation, the operability of each solution is quantified to identify problems in the solution that are incompatible with actual conditions (such as ownership conflicts, excessive costs), eliminating infeasible solutions or correcting potential risks. This ensures that the solutions advancing to the next stage have a realistic basis for implementation, reducing resource waste and planning delays caused by insufficient preliminary assessment. Finally, based on the feasibility assessment results of each optimized water network space, the final spatial optimization solution is determined from the candidate solutions. This ensures that the solution achieves an optimal match between technical rationality and implementation feasibility, providing a scientific basis for subsequent implementation. Finally, based on the determined spatial optimization plan, the initial water network space is actually optimized. Through the coordinated implementation of engineering measures and planning methods, the target water network space is formed, realizing the systematic transformation of the water network space from the "initial state" to the "optimized state". This ensures the full implementation of optimization goals (such as ecological security, spatial function, and implementation effectiveness) and enhances the comprehensive benefits of the water network space.

[0066] In summary, this application generates diverse candidate water network spatial schemes through spatial optimization measures, covering multiple dimensions of needs such as ecology, space, and implementation, thereby improving the comprehensiveness and flexibility of scheme selection. It quantifies the operability of each scheme through implementation feasibility assessment, identifying and resolving issues that do not match actual conditions in advance, and eliminating infeasible schemes. It dynamically balances feasibility and optimization objectives based on the assessment results to determine the scheme with the optimal match between technical rationality and implementation feasibility. Finally, through the coordinated implementation of engineering and planning methods, it achieves a systematic transformation of the water network space from its initial state to an optimized state, improving the feasibility and effectiveness of water network spatial optimization.

[0067] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0068] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0069] Figure 1 The flowchart of a water network space optimization method provided in Embodiment 1 of the present invention is shown;

[0070] Figure 2 A flowchart of an optimization effect evaluation method provided in Embodiment 1 of the present invention is shown;

[0071] Figure 3 The flowchart of a specific water network space optimization method provided in Embodiment 1 of the present invention is shown;

[0072] Figure 4 A schematic diagram of the spatial range of the water network provided in Embodiment 1 of the present invention is shown;

[0073] Figure 5 A flowchart of a method for determining the implementation feasibility assessment results provided in Embodiment 1 of the present invention is shown;

[0074] Figure 6 The flowchart illustrates a specific method for determining the feasibility assessment results provided in Embodiment 1 of the present invention.

[0075] Figure 7 The flowchart of a method for determining ecological security assessment results provided in Embodiment 1 of the present invention is shown;

[0076] Figure 8 A schematic diagram of a water environment capacity assessment result provided in Embodiment 1 of the present invention is shown;

[0077] Figure 9 A schematic diagram of a water environment pressure assessment result provided in Embodiment 1 of the present invention is shown;

[0078] Figure 10 A schematic diagram of a water environment constraint zoning map provided in Embodiment 1 of the present invention is shown;

[0079] Figure 11 The flowchart of a specific optimization effect evaluation method provided in Embodiment 1 of the present invention is shown;

[0080] Figure 12 A schematic diagram of a water network space optimization device provided in Embodiment 2 of the present invention is shown. Detailed Implementation

[0081] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0082] Example 1

[0083] To facilitate understanding of this application, the following is combined with... Figure 1 The flowchart of the water network space optimization method provided in Embodiment 1 of the present invention will be described in detail for Embodiment 1 of this application.

[0084] See Figure 1 As shown, Figure 1 A flowchart of a water network space optimization method provided in Embodiment 1 of the present invention is shown, wherein the method includes steps S101 to S104:

[0085] S101: Based on various spatial optimization measures, the initial water network space is spatially optimized to obtain several optimized water network spaces.

[0086] Specifically, by implementing various spatial optimization measures on the initial water network space, the water network space is optimized, resulting in multiple optimized water network spaces. The process of spatial optimization of the initial water network space includes three key steps: water network space scope identification, water network planning coordination, and water network space optimization. First, based on factors such as the natural characteristics of the rivers and channels and historical flood conditions, the river and channel baselines and river and lake management boundaries of the initial water network space are identified, and core indicators such as water surface ratio and water network density are determined. Next, the initial river and channel baselines and initial river and lake management boundaries in the initial water network space are optimized according to water network planning coordination rules, resulting in the first optimized water network space. Finally, the initial river and channel baselines and initial river and lake management boundaries are optimized based on the core indicators of the initial water network space, resulting in the second optimized water network space.

[0087] S102: Conduct feasibility assessments for each optimized water network space to obtain the feasibility assessment results for each optimized water network space.

[0088] Specifically, for each optimized water network space, the surrounding environmental conditions are comprehensively considered, and corresponding influencing factors are configured, with each factor assigned a corresponding weight. Based on these influencing factors and their weights, the influence score of each optimized water network space is calculated. Then, according to the preset score range, it is determined whether the influence score of each optimized water network space falls within that range, thereby determining whether each optimized water network space is feasible for implementation, and finally obtaining the implementation feasibility assessment result for each optimized water network space.

[0089] S103: Based on the feasibility assessment results of each optimized water network space, determine the spatial optimization scheme of the initial water network space.

[0090] Specifically, based on the feasibility assessment results of each optimized water network space, target optimized water network spaces with feasible implementation are selected. Then, combining the specific measures adopted by these target optimized water network spaces in the spatial optimization process, a spatial optimization scheme for the initial water network space is determined. This scheme comprehensively considers multiple dimensions such as ecological security, spatial creation, and implementation, aiming to achieve effective optimization of the initial water network space.

[0091] S104: Based on the spatial optimization scheme, the initial water network space is spatially optimized to obtain the target water network space.

[0092] Specifically, based on the determined spatial optimization plan, actual spatial optimization operations are carried out on the initial water network space. This process involves specific optimization measures, such as adding new channels, widening channels, optimizing channel alignment, and upgrading channel grades. These measures adjust and improve the initial water network space. Ultimately, after a series of optimization operations, a target water network space that meets ecological security requirements, has ideal spatial relationships, and is highly operable is formed.

[0093] In an optional implementation, see Figure 2 As shown, Figure 2 The flowchart of an optimization effect evaluation method provided in Embodiment 1 of the present invention is shown, wherein the method further includes steps S201-S202:

[0094] S201: Conduct ecological security assessments on the initial water network space and the target water network space to obtain the ecological security assessment results of the initial water network space and the target water network space, respectively.

[0095] Specifically, the ecological security assessment results include the water environment constraint zoning, hydrodynamic and water quality conditions, and urban flooding risk.

[0096] Water environment constraint zoning assessment: By assessing water environment capacity (such as geomorphological features, water accessibility and other indicators) and water environment pressure (such as the proportion of construction land, resident population density and other indicators), the water system is divided into combinations of low capacity and low pressure areas, high capacity and low pressure areas, low capacity and high pressure areas, and high capacity and high pressure areas, and problem areas of the water network are identified.

[0097] Hydrodynamic water quality simulation assessment: Using a one-dimensional hydrodynamic mathematical model to calculate water flow and water quality transport and diffusion, assessing the impact of water system connectivity and joint regulation of sluice gates on improving the water environment, simulating the water flow process and water quality changes in rivers and canals within the region, and using water quality indicators such as ammonia nitrogen (NH3-N) as examples for simulation calculation.

[0098] Urban flooding risk simulation assessment: The indicator system assessment method is adopted, which comprehensively considers the risk factors (such as ground elevation, runoff coefficient, drainage system, etc.), exposure factors (such as population density, economic conditions, etc.) and vulnerability factors (such as disaster prevention and mitigation capabilities, etc.) to conduct an urban flooding risk assessment of the region and form a zoning of low-risk, medium-risk and high-risk areas.

[0099] S202: Evaluate the optimization effect of the spatial optimization scheme based on the ecological security assessment results of the initial water network space and the ecological security assessment results of the target water network space.

[0100] Specifically, the ecological security assessment results of the initial water network space are compared with those of the target water network space to obtain the actual comparison results. Then, based on the actual comparison results and the expected comparison results, the optimization effect of the spatial optimization scheme is evaluated. By comparing the water environment constraint zoning, hydrodynamic and water quality conditions, and urban flooding risk of the initial and target water network spaces, the actual degree of improvement in ecological security of the target water network space is determined. Based on the optimization goals and the desired ecological security level, the expected comparison results are set, such as the expected optimization of the water environment constraint zoning, improvement of hydrodynamic and water quality, and reduction of urban flooding risk in the target water network space. Based on the degree of matching between the actual and expected comparison results, the spatial optimization scheme is evaluated to determine whether it has achieved the expected optimization effect. If the ecological security assessment results of the target water network space are superior to those of the initial water network space in all aspects and meet the expected comparison results, it indicates that the spatial optimization scheme has a good optimization effect and effectively improves the ecological security level of the water network space.

[0101] In an optional implementation, see Figure 3 As shown, Figure 3The flowchart illustrates a specific water network space optimization method provided in Embodiment 1 of the present invention, wherein the initial water network space is spatially optimized based on various spatial optimization measures to obtain several optimized water network spaces, including steps S301~S303:

[0102] S301: Identify the initial river baseline and the initial river and lake management area line in the initial water network space, and determine the core indicators of the initial water network space based on the initial river baseline and the initial river and lake management area line, wherein the core indicators include water surface ratio and water network density.

[0103] Specifically, the initial river and canal baselines and initial river and lake management boundary lines are identified within the initial water network space. Based on these baselines, core indicators of the initial water network space are determined, including water surface ratio and water network density. The river and canal baselines clearly define the management and protection boundaries of the rivers and canals and their surrounding areas, while the river and lake management boundary lines are the management and protection boundaries of rivers, lakes, and their surrounding areas as defined by relevant laws, regulations, and technical specifications. The river and lake management boundary lines for main and tributary rivers are generally extended 10 meters beyond the baseline, while those for smaller tributaries are extended 5 meters. Through these boundary lines, the water surface ratio (i.e., the proportion of water area to the total area) and water network density (i.e., the ratio of the total length of the water network to the area) of the water network space can be accurately calculated. These two core indicators reflect the basic characteristics and functions of the water network space.

[0104] Furthermore, basic data such as the natural characteristics of the river (e.g., flow direction, velocity, and width), historical flood conditions (e.g., flood inundation area and frequency), ecological protection needs (e.g., distribution of ecologically sensitive areas and protection targets), and relevant laws and regulations (e.g., river management regulations and ecological protection laws) are collected. On-site surveys of the river and its surrounding areas are conducted to verify and supplement the data. Based on the collected data and on-site survey results, professional software (e.g., GIS) or manual drawing tools are used to accurately delineate the river baseline to clarify the management and protection boundaries of the river and its surrounding areas.

[0105] Based on relevant laws, regulations, and technical specifications (such as the standards for delineating river and lake management areas formulated by the water resources department), rules for delineating the management scope lines of rivers and canals of different grades are determined. According to the river and canal grade, the distance by which the water system management scope line extends outward from the river and canal baseline is determined, with a 10m extension for main and tributary rivers and canals, and a 5m extension for minor tributary canals. Using the river and canal baseline as a reference, and according to the determined outward extension distance, the water system management scope line is accurately drawn using professional drawing software or tools, forming the management and protection boundaries of rivers, lakes, and their surrounding areas.

[0106] Data on river baselines and water system management boundaries are integrated into a unified Geographic Information System (GIS) platform. Utilizing the visualization capabilities of GIS software, the river baselines and water system management boundaries are distinguished by different colors or line types, generating an intuitive spatial diagram of the water network to facilitate management and decision-making. See also Figure 4 As shown, Figure 4 This diagram illustrates the spatial scope of the water network provided in Embodiment 1 of the present invention. The diagram shows the planning structure and boundary control of the water network space, achieving organic separation between the water network and urban construction space through multi-layered buffer zones. The core water network space, the "river channels," is located in the center (blue area) and is the main body of the water network system, undertaking functions such as flood control, drainage, and ecology. The "management areas" on both sides (5-10m wide) delineate the direct control boundaries of the river channels (such as the maintenance of water conservancy facilities and ecological protection areas), ensuring the rigid implementation of the water network functions. The "river channels" and "management areas" are demarcated by the river channel baseline. The "riverside green belt" (5-10m wide) is adjacent to the management area and is demarcated by the river and lake management area line. It mainly focuses on green landscape, while also serving as an ecological buffer (purifying runoff and conserving water sources) and providing recreational functions for citizens, enhancing the ecological and landscape value of the water network space. The "building setback area" (6-10m wide) is the outermost green zone, demarcated by a green line and the riverside green belt. It requires buildings to be set back a certain distance from the building boundary line to prevent high-density construction from directly encroaching on the water network space, further enhancing the ecological security and spatial permeability of the water network. The yellow area on the right is the "land boundary line," within which buildings (must be 6-10 meters away from the edge of the riverside green belt) are located. This indicates that urban construction must be carried out within the boundary line and is separated from the water network space by multiple buffer zones (management area, riverside green belt, building setback area), forming a gradient spatial structure of "water network-green space-building." This ensures the normal operation of the water network while reserving an ecological and landscape interface for the urban space.

[0107] S302: The initial river baseline and the initial river and lake management scope line in the initial water network space are optimized according to the pre-configured water network planning coordination rules to obtain the first optimized water network space.

[0108] Specifically, based on pre-configured water network planning coordination rules, the initial river baselines and initial river and lake management boundaries in the initial water network space are optimized to obtain the first optimized water network space. The water network planning coordination rules aim to comprehensively consider the integrity, coordination, safety, and functionality of urban river systems and water conservancy projects. Specific rules include: retaining the planning results of the water conservancy department, such as newly opened rivers for drainage and irrigation or artificial lakes with significant water storage functions; appropriately optimizing the control plan to facilitate development and construction while meeting water conservancy requirements; preserving areas where the existing water system is highly consistent with the water conservancy department's planning and control plans, and where optimization and improvement are difficult; and comprehensively optimizing the water network system while meeting water conservancy and control plan requirements. Based on these rules, the initial river baselines and river and lake management boundaries are adjusted and optimized to obtain the first optimized water network space.

[0109] Furthermore, collect basic data on urban river systems and water conservancy projects, including hydrology, topography, and land use. Integrate river and lake boundary maps from various regions, combining them with relevant water conservancy department plans and special plans for blue line delineation. Communicate and coordinate with the water conservancy department to ensure that river and canal grades, control intensity, and other relevant standards are not lowered. Clarify the urban master plan and detailed plans' requirements for water network space, such as land use layout and development intensity. Based on the collected data and planning requirements, formulate a water network space optimization plan. Taking into account the integrity, coordination, safety, and functionality of the water network, propose specific optimization measures. Implement water network optimization projects according to the optimization plan, including river regulation and water system connectivity. Strengthen the supervision and management of project construction to ensure that project quality meets standards. Conduct an effect evaluation of the optimized water network space to analyze whether it meets the planning objectives. Based on the evaluation results, provide timely feedback and adjust the optimization plan to ensure the optimization effect of the water network space. The pre-configured water network planning coordination rules are shown in the table below:

[0110]

[0111] S303: Based on the core indicators of the initial water network space, the initial river baseline and the initial river and lake management scope line in the initial water network space are optimized to obtain the second optimized water network space.

[0112] Specifically, based on the core indicators of the initial water network space (water surface ratio and water network density), the initial river and canal baselines and the initial river and lake management boundary lines are optimized to obtain the second optimized water network space. Using the water surface ratio and water network density of the initial water network space as the core basis, the shortcomings of the water network space are analyzed, such as a low water surface ratio potentially leading to insufficient water area, and insufficient water network density potentially affecting water system connectivity. To address these issues, corresponding optimization measures are taken, such as widening rivers and canals to increase water area and connecting tributaries to increase water network density, thereby optimizing and adjusting the initial river and canal baselines and river and lake management boundary lines to obtain the second optimized water network space.

[0113] Furthermore, the following analysis and problem identification are conducted: (1) Water surface ratio analysis: Calculate the current water surface ratio of the water network, compare it with the water surface ratio standard required by the plan, and determine the areas where the water area needs to be increased. (2) Water network structure assessment: Analyze the hierarchical structure of the water network and identify whether the distribution of the main canals, tributary canals and branch canals is reasonable. (3) Water network density calculation: Assess whether the water network density meets the regional drainage and ecological needs, and determine the areas where the water network needs to be densified. (4) Connectivity check: Check the connectivity of the water network and find the blockage points and areas where the water flow is not smooth.

[0114] The optimization measures include: (1) Adding new canals: In areas with insufficient water surface area or low water network density, new canals will be planned. The direction, width and depth of the canals will be designed according to the topography and drainage needs to ensure that the new canals are effectively connected with the existing water network and enhance the overall connectivity of the water system. (2) Widening canals: Existing canals with insufficient flood discharge capacity or poor water flow will be widened. The widening size will be determined according to hydraulic calculations to ensure that the canals can meet the needs of flood control and ecology. (3) Optimizing canal alignment: The curvature and direction of canals will be adjusted to reduce unnecessary bends and increase water flow speed. When optimizing the alignment, the surrounding land use and ecological protection should be considered. (4) Upgrading canal levels: Some tributary canals will be upgraded to main canals to enhance their drainage and storage capacity. When upgrading the level, the bank protection and dredging work of the canals should be strengthened at the same time.

[0115] Comprehensive Optimization and Implementation: Multiple measures can be combined, integrating new additions, widening, optimized alignment, and upgrades to address existing problems in the water network. In flood-prone areas, priority should be given to adding and widening waterways to increase drainage capacity; in ecologically sensitive areas, waterway alignment should be optimized to reduce impact on the ecological environment. Alternatively, a phased implementation plan can be developed, clearly defining the optimization tasks and objectives for each stage. Initially, optimization projects at key nodes should be implemented, with the entire water network gradually improved later. During implementation, the optimization effect should be regularly evaluated, and the optimization plan adjusted promptly based on the evaluation results to ensure the expected optimization goals are achieved.

[0116] In an optional implementation, see Figure 5 As shown, Figure 5 The flowchart illustrates a method for determining the implementation feasibility assessment results provided in Embodiment 1 of the present invention. The method includes steps S501-S503, whereby the implementation feasibility assessment of each optimized water network space is performed to obtain the implementation feasibility assessment results for each optimized water network space.

[0117] S501: Configure influencing factors for each optimized water network space based on the surrounding environmental conditions of each optimized water network space, and configure the influencing factor weight for each influencing factor.

[0118] Specifically, the influencing factors cover multiple aspects, including but not limited to: (1) physical spatial environment: such as building density, development intensity, architectural style, etc., which reflect the physical environment around the water network space. (2) ownership and land use nature: involving land ownership (state-owned, collective, land reserve), land use nature and restrictive factors (such as ecological red line, basic farmland), etc., which affect the feasibility and implementation difficulty of water network space optimization. (3) development potential of the plot: including location characteristics (waterfront environment, landscape effect), the role of major infrastructure (railway stations, important roads), urban center system, traffic accessibility and distance from the waterfront, etc., which determine the potential benefits after water network space optimization. (4) economic feasibility of transformation: such as enterprise taxation, enterprise level, industry type, etc., which reflect the economic conditions of the area around the water network space and the economic feasibility of transformation. The influencing factors and their weights are shown in the table below:

[0119]

[0120] S502: Determine the influence score of each optimized water network space based on the influence factors of each optimized water network space and the influence factor weight of each influence factor.

[0121] Specifically, the score of each influencing factor is multiplied by its corresponding weight, and then the weighted scores of all influencing factors are summed to obtain the total influence score of the optimized water network space. This process can be viewed as a weighted summation process, and its calculation formula is: Total influence score = ∑(Influence factor score × Influence factor weight). By using this weighted summation method, the degree of influence of each influencing factor on the feasibility of implementing the water network space is comprehensively considered, thereby obtaining a quantitative indicator that can reflect the ease or difficulty of implementing each optimized water network space.

[0122] S503: Determine the feasibility assessment results for each optimized water network space based on the impact score and preset score range.

[0123] Specifically, one or more score ranges are defined, with each range corresponding to a feasibility level. For example, if the total impact score is in a high range (e.g., above 80 points), the optimized water network space is considered to have high feasibility and can be given priority. If the total impact score is in a medium range (e.g., between 60 and 80 points), it indicates that the optimized water network space may face certain challenges in implementation and requires further analysis and optimization. If the total impact score is in a low range (e.g., below 60 points), it means that the optimized water network space is difficult to implement under current conditions and may require re-evaluation of the optimization plan or adjustment of the impact factors. Through this score range-based evaluation method, the feasibility of each optimized water network space can be clearly classified and judged, thus providing a scientific basis for subsequent spatial optimization plan decisions.

[0124] In practical application, four main categories of influencing factors are first constructed: physical spatial environment (development intensity, building density, building quality), ownership and land use (land ownership, land use, restrictive factors), development potential of the plot (urban center system, distance to rail stations, transportation accessibility, distance to waterfront), and economic feasibility of redevelopment (corporate taxation, enterprise level, industry type). Next, the analytic hierarchy process (AHP) is used to determine the weights of each factor: expert opinions are collected, a judgment matrix is ​​constructed, eigenvectors are calculated, and normalized to obtain the weight vectors. Then, the data for each factor are standardized, and overlay analysis is performed using a GIS platform to generate a preliminary spatial distribution of urban renewal potential. Afterwards, combined with the results of restrictive factor corrections, key areas for urban renewal are identified. Finally, the space required for water network optimization measures is compared with the key renewal areas to dynamically verify the feasibility of implementing water network optimization measures, providing a scientific basis for water network optimization.

[0125] In an optional implementation, see Figure 6 As shown, Figure 6 The flowchart illustrates a specific method for determining the implementation feasibility assessment result provided in Embodiment 1 of the present invention. The method for determining the implementation feasibility assessment result of each optimized water network space based on the influence score of each optimized water network space and a preset score range includes steps S601-S603:

[0126] S601: Determine whether the impact score of each optimized water network space is within the preset score range.

[0127] Specifically, based on the preset score range, check whether the total impact score of each optimized water network space falls within that range. For example, if the preset score range is 60 to 100 points, then for each optimized water network space, check whether its total impact score is greater than or equal to 60 points and less than or equal to 100 points.

[0128] S602: Determine the feasibility assessment results of the target optimized water network space whose impact score is within the preset score range as having feasibility for implementation.

[0129] Specifically, optimized water network spaces with total impact scores within a preset range are selected, and their implementation feasibility assessment results are determined to be feasible. This means that these optimized water network spaces are relatively easy to implement under current conditions and have a high implementation priority. For example, if the total impact score of optimized water network space A is 85 points, which is within the preset range of 60 to 100 points, then optimized water network space A is feasible.

[0130] S603: Determine the feasibility assessment result of the optimized water network space whose impact score is not within the preset score range as not feasible to implement.

[0131] Specifically, optimized water network spaces whose total impact score is outside the preset range are deemed not feasible for implementation. These optimized water network spaces may face significant difficulties and challenges during implementation, requiring further analysis of the reasons or adjustments to the optimization plan. For example, if the total impact score of optimized water network space B is 55 points, which is lower than the preset lower limit of 60 points, then optimized water network space B is not feasible for implementation.

[0132] The spatial optimization scheme for the initial water network space is determined based on the feasibility assessment results of each optimized water network space, including:

[0133] The spatial optimization scheme is determined based on the spatial optimization measures obtained for the target water network space.

[0134] Specifically, this plan is formulated based on spatial optimization measures adopted to optimize the water network space according to feasible objectives. This process focuses on those water network space optimization objectives deemed feasible after assessment, deeply analyzing and refining specific measures to achieve multi-dimensional optimization goals such as ecological security, spatial creation, and implementation. These measures may include optimizing and adjusting river baselines and river and lake management boundaries, improving the water network structure (e.g., widening rivers, adding new rivers, optimizing river alignments), and controlling and improving water area and water network density. By summarizing and integrating these effective spatial optimization measures, a systematic, comprehensive, and practical spatial optimization plan is formed. This plan aims to guide the scientific and rational optimization and transformation of the initial water network space, ensuring that the optimized water network space not only meets ecological security requirements but also achieves ideal spatial relationships, and has high feasibility and implementability in practice.

[0135] In an optional implementation, see Figure 7 As shown, Figure 7 A flowchart of a method for determining ecological security assessment results provided in Embodiment 1 of the present invention is shown. The ecological security assessment results include water environment constraint zoning, hydrodynamic and water quality conditions, and urban flooding risk. The step of conducting ecological security assessments on the initial water network space and the target water network space to obtain the ecological security assessment results for the initial water network space and the target water network space, respectively, includes steps S701-S703:

[0136] S701: Based on the water environment capacity and water environment pressure of the initial water network space and the target water network space, determine the water environment constraint zoning of the initial water network space and the water environment constraint zoning of the target water network space.

[0137] Specifically, the initial water network space: Based on the assessment of water environmental capacity (such as geomorphological features and water accessibility) and water environmental pressure (such as the proportion of built-up land and resident population density), the initial water network space is divided into different water environmental constraint zones, such as combinations of low-capacity and low-pressure zones, high-capacity and low-pressure zones, low-capacity and high-pressure zones, and high-capacity and high-pressure zones, identifying problem areas within the water network. The target water network space: Similarly, based on the assessment of water environmental capacity and pressure, the water environmental constraint zones of the target water network space are determined to reflect the optimized water environmental constraint status.

[0138] Furthermore, two sub-evaluation systems, namely water environment capacity and water environment pressure, are constructed to achieve zonal assessment of water environment constraints in water systems.

[0139] A sub-evaluation system for water environmental capacity was constructed, selecting five indicators: geomorphological features, water accessibility, water surface ratio, water quality targets, and clear water channels. These indicators comprehensively reflect the natural characteristics of water bodies and their impact on environmental capacity. Basic data for each indicator were collected, and data of different dimensions were standardized to ensure comparability. Referring to relevant literature, the Analytic Hierarchy Process (AHP) entropy comprehensive evaluation method was used to determine the weights of each indicator. The specific steps were as follows: Based on expert opinions or relevant research, the importance of each indicator was compared pairwise to construct a judgment matrix. The eigenvectors of the judgment matrix were calculated using the eigenvector method, and a consistency check was performed to ensure the consistency of the judgment matrix. Based on the data of each indicator, the entropy value of each indicator was calculated to reflect the degree of dispersion of the indicator. Combining the subjective weights of AHP and the objective weights of entropy values, the comprehensive weight of each indicator was calculated.

[0140] A water environment stress assessment system was constructed, selecting six indicators: the proportion of construction land, resident population density, GDP per unit area, wastewater discharge intensity, agricultural pollution intensity, and industrial COD emissions. These indicators effectively reflect the stress of human activities on the water environment. Basic data for each indicator were collected and standardized. The AHP entropy comprehensive evaluation method was used to determine the weights of each indicator, following the same steps as above.

[0141] The water environment constraint zoning index system and its weights are shown in the table below:

[0142]

[0143] Water Environment Constraint Zoning Assessment: Data from water environment capacity zoning and pressure zoning are integrated into a GIS platform. The data is standardized and normalized to ensure comparability and overlayability of data with different dimensions. Using the overlay analysis function of GIS, a water environment pressure zoning map is overlaid on the water environment capacity zoning map, achieving precise spatial fusion of the two zoning results. Based on the data distribution characteristics after overlay analysis, four combined zoning zones are defined: low-capacity / low-pressure zone, high-capacity / low-pressure zone, low-capacity / high-pressure zone, and high-capacity / high-pressure zone. A water environment constraint zoning discrimination matrix is ​​output, using different colors or legends to distinguish the four combined zoning zones, visually presenting the dual spatial distribution of water environment capacity and pressure. This matrix can be used to accurately locate areas with water environment problems, providing a decision-making basis for subsequent implementation of differentiated water environment management strategies, such as prioritizing pollution control projects in low-capacity / high-pressure zones and focusing on ecological restoration and protection in high-capacity / low-pressure zones. (See also...) Figure 8 As shown, Figure 8 This diagram illustrates a water environment capacity assessment result provided in Embodiment 1 of the present invention, wherein the dark blue portion represents a high-capacity area and the light blue portion represents a low-capacity area. (See also...) Figure 9 As shown, Figure 9 The diagram shows a water environment pressure assessment result provided in Embodiment 1 of the present invention, wherein the red part represents the high pressure area and the yellow part represents the low pressure area.

[0144] The water environment constraint zoning discrimination matrix is ​​as follows:

[0145] Finally, based on the discrimination results, a water environment constraint zoning map is generated, clearly identifying the scope and characteristics of different zones, thereby identifying problem areas in the water network. (See also...) Figure 10 As shown, Figure 10The diagram illustrates a water environment constraint zoning map provided in Embodiment 1 of the present invention. Dark green represents high-capacity, low-pressure areas; light green represents high-capacity, high-pressure areas; yellow represents low-capacity, low-pressure areas; and red represents low-capacity, high-pressure areas. Through the above steps, the present invention can accurately identify problem areas in the water network, providing a scientific basis for subsequent targeted optimization measures.

[0146] S702: The hydrodynamic and water quality conditions of the initial water network space and the target water network space are determined using a one-dimensional hydrodynamic mathematical model.

[0147] Specifically, a one-dimensional hydrodynamic mathematical model is used to simulate water flow and water quality transport and diffusion processes, assessing the hydrodynamic and water quality conditions of the initial water network space. The model considers the generalized situation of the main inland rivers and canals in the region and the scheduling principles of sluice gate projects. By simulating and calculating changes in water flow velocity and water quality indicators (such as ammonia nitrogen), the hydrodynamic and water quality issues of the initial water network are determined. Target water network space: The same one-dimensional hydrodynamic mathematical model is applied to simulate the optimized target water network space, assessing the improvement in its hydrodynamics and water quality, and analyzing the effects of optimization measures on water flow smoothness and water quality improvement.

[0148] Furthermore, a comprehensive review of the existing water system will be conducted to identify major water supply and drainage channels, ensuring the system's connectivity. Following the principle of separate supply and drainage, water supply and drainage channels will be rationally arranged based on water quality and quantity conditions to avoid mixing of sewage with clean water. The advantages of large flow and good water quality in the main waterways will be utilized as the primary water conveyance channels to guarantee water quality and quantity. Waterways will be dredged to remove silt, widen narrow sections, and improve flow capacity, enhancing the overall connectivity of the water system. By dredging waterways and optimizing the water system structure, hydrodynamics will be enhanced, water flow will be improved, and the natural purification capacity of the water bodies will be promoted. Lakes and wetlands will be constructed according to local conditions to utilize their water storage functions to mitigate peak flows and supplement dry periods, increasing water supply during the dry season and improving the self-purification capacity of the water bodies.

[0149] A one-dimensional hydrodynamic mathematical model was employed to simulate water flow and water quality transport and diffusion processes. The model generalized the main inland waterways within the planning area, incorporated sluice gate projects, and established a preliminary supply and drainage pattern based on scheduling principles. The hydrodynamic conditions before and after water system connectivity were simulated, and the impact of water system connectivity and sluice gate coordination on improving the water environment was assessed. Simulation calculations visually demonstrated the effects of optimization measures on improving hydrodynamics and water quality. Ammonia nitrogen (NH3-N) was selected as a key indicator for water quality simulation. The model was used to simulate and calculate water quality before and after connectivity, quantitatively evaluating the specific effects of optimization measures on water quality improvement.

[0150] Ultimately, through the above measures, a water system pattern will be formed with main rivers as the main body and branch rivers as the auxiliary, connecting lakes and wetlands, ensuring smooth water flow, effectively improving water flow and water quality, and achieving comprehensive improvement of water environment, water ecology and water landscape.

[0151] S703: Based on the waterlogging risk factors and risk factor weights of the initial water network space and the target water network space, determine the waterlogging risk status of the initial water network space and the target water network space.

[0152] Specifically, based on waterlogging risk factors (such as ground elevation, runoff coefficient, and drainage system) and their weights, an indicator system evaluation method is used to assess the waterlogging risk of the initial water network space, forming low, medium, and high-risk zones and identifying areas with higher waterlogging risk. Target water network space: Similarly, based on waterlogging risk factors and their weights, the target water network space is assessed for waterlogging risk to determine the changes in waterlogging risk after optimization and to verify the effectiveness of optimization measures in reducing waterlogging risk.

[0153] Furthermore, a waterlogging risk assessment index system was constructed. Waterlogging disaster risk is constituted by the interaction of the hazard of causative factors, the exposure of the affected area, and its vulnerability. Waterlogging risk factors include: hazard influencing factors: ground elevation, runoff coefficient, drainage system; exposure influencing factors: population density, economic status; vulnerability influencing factors: disaster prevention and mitigation capabilities. Through expert consultation, literature review, or data analysis, the weights of each indicator were determined to reflect their relative impact on waterlogging risk. The urban waterlogging risk assessment index system and its weights are shown in the table below:

[0154]

[0155] Basic data for each indicator were collected and standardized to ensure data comparability and consistency. The processed data were then integrated into a GIS platform, and a weighted summation formula was used to calculate the waterlogging risk value for each region. Based on the risk value, the study area was divided into low-risk, medium-risk, and high-risk zones, and a waterlogging risk zoning map was generated according to the risk type of each region.

[0156] In an optional implementation, see Figure 11 As shown, Figure 11 The flowchart illustrates a specific optimization effect evaluation method provided in Embodiment 1 of the present invention. The evaluation of the optimization effect of the spatial optimization scheme based on the ecological security assessment results of the initial water network space and the ecological security assessment results of the target water network space includes steps S1101-S1102:

[0157] S1101: The ecological security assessment results of the initial water network space are compared with the ecological security assessment results of the target water network space to obtain the actual comparison results.

[0158] Specifically, the content covers the water environment constraint zoning, hydrodynamic and water quality conditions, and urban flooding risk, aiming to comprehensively understand the changes in ecological security of the water network space before and after optimization.

[0159] S1102: Determine the optimization effect of the spatial optimization scheme based on the actual comparison results and the expected comparison results.

[0160] Specifically, the optimization effects include: (1) Significant optimization effect: If the water environment constraints of the target water network space are significantly improved, the hydrodynamic water quality is significantly improved, the risk of waterlogging is effectively reduced, and the results are highly consistent with the expected comparison results, then the optimization scheme is effective. (2) Moderate optimization effect: If the actual comparison results deviate from the expected results, and some indicators do not meet expectations, then further analysis of the reasons is needed, and the optimization scheme may need to be adjusted. (3) Poor optimization effect: If the actual comparison results are significantly different from the expected results and the expected optimization goals are not achieved, then the optimization scheme is poor, and the optimization scheme needs to be re-examined and significantly adjusted.

[0161] In the process of optimizing the water network space, the current water surface ratio (i.e., the ratio of water area to total area) can be calculated through on-site measurements and remote sensing image analysis, and the areas requiring improvement can be identified by comparing with planning standards. Simultaneously, the water network density (i.e., the ratio of total water network length to area) can be calculated to identify areas requiring densification. For backbone rivers (main and tributary rivers), specific alignments are designed on a GIS platform based on topographic and hydrological data to ensure compliance with water conservancy requirements and coordination with urban planning. Management and protection areas are determined according to technical regulations and clearly marked on drawings for rigid control. For tributary rivers, flexible alignments are delineated considering their flexibility, and preliminary plans are made for possible routes. Calculations ensure that the optimized water surface ratio is not lower than the current level and the water network density is not lower than 80% of the current level, thus enabling flexible control. During the implementation of flexible control, the water surface ratio and water network density indicators for each island unit are calculated according to planning objectives and rationally allocated to each area. A dynamic adjustment mechanism is established to regularly evaluate and adjust the control plan based on implementation feedback and monitoring data to ensure that planning objectives are achieved. Through the above steps, the present invention systematically optimizes and manages the water network space, ensuring that the water surface ratio and water network density meet the planning requirements, while taking into account both the rigid management of the main rivers and canals and the flexible management of the tributaries.

[0162] Example 2

[0163] Embodiment 2 of the present invention provides a water network space optimization device, see [link to embodiment]. Figure 12 As shown, Figure 12This diagram illustrates the structure of a water network space optimization device according to Embodiment 2 of the present invention, wherein the device includes:

[0164] The optimized water network space determination module 1201 is used to perform spatial optimization on the initial water network space based on various spatial optimization measures to obtain several optimized water network spaces.

[0165] The implementation feasibility assessment result determination module 1202 is used to conduct implementation feasibility assessments on each optimized water network space and obtain the implementation feasibility assessment results for each optimized water network space.

[0166] The spatial optimization scheme determination module 1203 is used to determine the spatial optimization scheme of the initial water network space based on the implementation feasibility assessment results of each optimized water network space.

[0167] The target water network space determination module 1204 is used to perform spatial optimization on the initial water network space based on the spatial optimization scheme to obtain the target water network space.

[0168] In an optional implementation, the device further includes:

[0169] An ecological security assessment result determination module is used to conduct ecological security assessments on the initial water network space and the target water network space, and obtain the ecological security assessment results of the initial water network space and the ecological security assessment results of the target water network space, respectively.

[0170] The optimization effect evaluation module is used to evaluate the optimization effect of the spatial optimization scheme based on the ecological security assessment results of the initial water network space and the ecological security assessment results of the target water network space.

[0171] In an optional implementation, the initial water network space is spatially optimized based on various spatial optimization measures to obtain several optimized water network spaces, including:

[0172] The initial river and canal baseline and the initial river and lake management area line in the initial water network space are identified. Based on the initial river and canal baseline and the initial river and lake management area line, the core indicators of the initial water network space are determined, wherein the core indicators include water surface ratio and water network density.

[0173] The first optimized water network space is obtained by optimizing the initial river baseline and the initial river and lake management scope line in the initial water network space according to the pre-configured water network planning coordination rules.

[0174] Based on the core indicators of the initial water network space, the initial river baseline and the initial river and lake management scope line in the initial water network space are optimized to obtain the second optimized water network space.

[0175] In an optional implementation scheme, the feasibility assessment of each optimized water network space, and the resulting feasibility assessment results for each optimized water network space, include:

[0176] For each optimized water network space, an influencing factor is assigned based on the surrounding environmental conditions, and an influencing factor weight is assigned to each influencing factor.

[0177] The influence score of each optimized water network space is determined based on the influence factors of each optimized water network space and the influence factor weight of each influence factor.

[0178] The feasibility assessment results for each optimized water network space are determined based on the impact score and the preset score range.

[0179] In an optional implementation, determining the feasibility assessment results for each optimized water network space based on its impact score and a preset score range includes:

[0180] Determine whether the impact score of each optimized water network space is within the preset score range;

[0181] The feasibility assessment results of the target optimized water network space whose impact score is within the preset score range are determined to be feasible for implementation;

[0182] The feasibility assessment results for optimizing water network space whose impact score is not within the preset score range are determined to be not feasible.

[0183] The spatial optimization scheme for the initial water network space is determined based on the feasibility assessment results of each optimized water network space, including:

[0184] The spatial optimization scheme is determined based on the spatial optimization measures obtained for the target water network space.

[0185] In an optional implementation, the ecological security assessment results include water environment constraint zoning, hydrodynamic and water quality conditions, and urban flooding risk; the ecological security assessment of the initial water network space and the target water network space, respectively obtaining the ecological security assessment results of the initial water network space and the target water network space, includes:

[0186] Based on the water environment capacity and water environment pressure of the initial water network space and the target water network space, the water environment constraint zoning of the initial water network space and the water environment constraint zoning of the target water network space are determined.

[0187] A one-dimensional hydrodynamic mathematical model was used to determine the hydrodynamic and water quality conditions of the initial water network space and the target water network space.

[0188] Based on the waterlogging risk factors and risk factor weights of the initial water network space and the target water network space, the waterlogging risk status of the initial water network space and the target water network space are determined.

[0189] In an optional implementation, the evaluation of the optimization effect of the spatial optimization scheme based on the ecological security assessment results of the initial water network space and the ecological security assessment results of the target water network space includes:

[0190] The ecological security assessment results of the initial water network space are compared with the ecological security assessment results of the target water network space to obtain the actual comparison results;

[0191] The optimization effect of the spatial optimization scheme is determined based on the actual comparison results and the expected comparison results.

[0192] The water network space optimization device provided in this embodiment of the invention can be specific hardware on a device or software or firmware installed on the device. The implementation principle and technical effects of the device provided in this embodiment of the invention are the same as those in the foregoing method embodiments. For the sake of brevity, any parts not mentioned in the device embodiments can be referred to the corresponding content in the foregoing method embodiments. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can all be referred to the corresponding processes in the above method embodiments, and will not be repeated here.

[0193] In the embodiments provided by this invention, it should be understood that the disclosed apparatus and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the coupling or direct coupling or communication connection shown or discussed may be through some communication interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0194] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0195] In addition, the functional units in the embodiments provided by the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0196] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "first", "second", "third", etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0197] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. All should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A water network space optimization method, characterized in that, The method comprises: based on each space optimization measure, the initial water network space is optimized to obtain several optimized water network spaces; each optimized water network space is evaluated for implementation feasibility to obtain implementation feasibility evaluation results of each optimized water network space; based on the implementation feasibility evaluation results of each optimized water network space, a space optimization scheme of the initial water network space is determined; based on the space optimization scheme, the initial water network space is optimized to obtain a target water network space; the initial water network space and the target water network space are evaluated for ecological safety to obtain ecological safety evaluation results of the initial water network space and the target water network space respectively; based on the ecological safety evaluation results of the initial water network space and the target water network space, the optimization effect of the space optimization scheme is evaluated; based on each space optimization measure, the initial water network space is optimized to obtain several optimized water network spaces, comprising: the initial river and lake management range line in the initial water network space is identified, and the core index of the initial water network space is determined according to the initial river and lake management range line, wherein the core index includes water surface rate and water network density; the initial river and lake management range line in the initial water network space is optimized according to the preconfigured water network planning coordination rule to obtain a first optimized water network space; the initial river and lake management range line in the initial water network space is optimized according to the core index of the initial water network space to obtain a second optimized water network space; the ecological safety evaluation results include water environment constraint zoning, water dynamic water quality and waterlogging risk; the ecological safety evaluation results of the initial water network space and the target water network space are obtained by evaluating the initial water network space and the target water network space for ecological safety, comprising: the water environment constraint zoning of the initial water network space and the target water network space is determined according to the water environment capacity and the water environment pressure of the initial water network space and the target water network space; one-dimensional water dynamic mathematical model is used to determine the water dynamic water quality of the initial water network space and the target water network space; the waterlogging risk of the initial water network space and the target water network space is determined according to the waterlogging risk factor and the risk factor weight of the initial water network space and the target water network space.

2. The method of claim 1, wherein, the implementation feasibility evaluation of each optimized water network space is performed to obtain the implementation feasibility evaluation results of each optimized water network space, comprising: for the surrounding environment state of each optimized water network space, the influence factor is configured for each optimized water network space, and the influence factor weight is configured for each influence factor; the influence score of each optimized water network space is determined according to the influence factor of each optimized water network space and the influence factor weight of each influence factor; The implementation feasibility evaluation result of each optimized water network space is determined according to the influence score of each optimized water network space and a preset score range.

3. The method of claim 2, wherein, The implementation feasibility evaluation result of each optimized water network space is determined according to the influence score of each optimized water network space and a preset score range, including: determining whether the influence score of each optimized water network space is within the preset score range; determining that the implementation feasibility evaluation result of the target optimized water network space with the influence score within the preset score range is feasible; determining that the implementation feasibility evaluation result of the optimized water network space with the influence score not within the preset score range is not feasible; The space optimization scheme of the initial water network space is determined based on the implementation feasibility evaluation result of each optimized water network space, including: The space optimization scheme is determined according to the space optimization measure of the target optimized water network space.

4. The method of claim 1, wherein, The optimization effect of the space optimization scheme is evaluated based on the ecological safety evaluation result of the initial water network space and the ecological safety evaluation result of the target water network space, including: comparing the ecological safety evaluation result of the initial water network space with the ecological safety evaluation result of the target water network space to obtain an actual comparison result; determining the optimization effect of the space optimization scheme according to the actual comparison result and an expected comparison result.

5. A water network spatial optimization device, characterized in that, The device includes: An optimized water network space determination module is configured to perform space optimization on an initial water network space based on each space optimization measure to obtain a plurality of optimized water network spaces. An implementation feasibility evaluation result determination module is configured to perform implementation feasibility evaluation on each optimized water network space to obtain an implementation feasibility evaluation result of each optimized water network space. A space optimization scheme determination module is configured to determine a space optimization scheme of the initial water network space based on the implementation feasibility evaluation result of each optimized water network space. A target water network space determination module is configured to perform space optimization on the initial water network space based on the space optimization scheme to obtain a target water network space. An ecological safety evaluation result determination module is configured to perform ecological safety evaluation on the initial water network space and the target water network space to obtain an ecological safety evaluation result of the initial water network space and an ecological safety evaluation result of the target water network space, respectively. An optimization effect evaluation module is configured to evaluate the optimization effect of the space optimization scheme based on the ecological safety evaluation result of the initial water network space and the ecological safety evaluation result of the target water network space. The initial river and lake management range line in the initial water network space is optimized according to a preconfigured water network planning coordination rule to obtain a first optimized water network space. ​ ​ According to the core indicators of the initial water network space, the initial river and lake management range lines in the initial water network space are optimized to obtain a second optimized water network space; The ecological safety evaluation results include water environment constraint partition conditions, water dynamic and water quality conditions, and waterlogging risk conditions; the ecological safety evaluation of the initial water network space and the target water network space respectively obtains the ecological safety evaluation results of the initial water network space and the target water network space, which include: According to the water environment capacity and the water environment pressure of the initial water network space and the target water network space, the water environment constraint partition conditions of the initial water network space and the target water network space are determined; A one-dimensional water dynamic mathematical model is used to determine the water dynamic and water quality conditions of the initial water network space and the target water network space; According to the waterlogging risk factors and the risk factor weights of the initial water network space and the target water network space, the waterlogging risk conditions of the initial water network space and the target water network space are determined.

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