Method and device for determining water demand of water supply node

Abstract

The invention provides a method and device for determining the water demand of a water supply node, and relates to the technical field of urban planning, and the method comprises the steps: obtaining land data of land space planning; according to the territorial space planning land data and the stage information corresponding to the territorial space planning land data, determining the water demand of the water supply node; the stage information comprises at least one of a control detailed planning and compiling stage and a planning comprehensive implementation scheme compiling stage. According to the method provided by the embodiment of the invention, the water demand of the water supply node can be determined more accurately.

Description

Technical Field

[0001] The present invention relates to the technical field of urban planning, and in particular to a method and device for determining water demand of a water supply node. Background Art

[0002] The reasonable allocation of water supply node flow is a very critical and important link in the hydraulic simulation of the pipe network. By adopting different calculation methods and combining regional water demand, the node flow of the pipes in the water supply pipe network system can be reasonably determined. This is a key issue related to the scale of pipeline planning and design and the subsequent stability and safety of water supply to surrounding plots. It is also an important factor reflecting the accuracy of the pipe network model and the reliability of the pipe network.

[0003] In the relevant technology, there are many methods for calculating the water demand of water supply nodes, but the errors are large and cannot accurately guide the subsequent actual engineering construction. Summary of the invention

[0004] The present invention provides a method and device for determining the water demand of a water supply node. In the process of determining the water demand of a water supply node, the water demand of the water supply node is determined according to national land space planning land data and stage information corresponding to the national land space planning land data; that is, different methods are used to determine the water demand of the water supply node for national land space planning land data at different stages. On the basis of making full use of the national land space planning land data, the characteristics of the national land space planning land data at each stage are effectively combined, so that the water demand of the water supply node finally determined is more reasonable and scientific.

[0005] The present invention provides a method for determining the water demand of a water supply node, comprising the following steps.

[0006] Obtain land use data for national land space planning; The water demand of the water supply node is determined based on the national land space planning land use data and the stage information corresponding to the national land space planning land use data; the stage information includes at least one of the following: the control detailed planning preparation stage and the planning comprehensive implementation plan preparation stage.

[0007] According to a method for determining water demand of a water supply node provided by the present invention, the water demand of the water supply node is determined according to the national land space planning land data and the stage information corresponding to the national land space planning land data, including: In the case where the stage information corresponding to the land use data of the national land space planning is the stage of preparation of the control detailed planning, the polygonal area corresponding to each water supply node is determined according to the land use data of the national land space planning in the stage of preparation of the control detailed planning, the location information of the planned water supply nodes and the Thiessen polygon algorithm; The water demand of each polygonal area is determined as the water demand of the water supply node corresponding to the polygonal area.

[0008] According to a method for determining water demand of a water supply node provided by the present invention, the water demand of the water supply node is determined according to the national land space planning land data and the stage information corresponding to the national land space planning land data, including: When the stage information corresponding to the land use data of the national land space planning is the stage of preparing the comprehensive implementation plan of the plan, the water demand of each water supply network is determined according to the land use data of the national land space planning at the stage of preparing the comprehensive implementation plan of the plan and the planned water supply network information; According to the water demand of each water supply network, the water demand of the water supply nodes connected to each water supply network is determined.

[0009] According to a method for determining water demand of a water supply node provided by the present invention, the water demand of each water supply network is determined according to the land use data of the national land space planning and the planned water supply network information in the preparation stage of the comprehensive implementation plan of the plan, including: Determine the correspondence between each building in the planned land use data and each water supply network; The water demand of each water supply network is determined according to the corresponding relationship between each building in the planned land use data and each water supply network, and the water demand of each building in the planned land use data.

[0010] According to a method for determining water demand of a water supply node provided by the present invention, the determination of the correspondence between each building in the planned land use data and each water supply network includes: For any building in the planned land use data, the water supply network closest to the building among multiple water supply networks is determined as the water supply network corresponding to the building; Determining the water demand of each water supply network according to the correspondence between each building in the planned land use data and each water supply network, and the water demand of each building in the planned land use data, includes: For any water supply network, the sum of the water demands of multiple buildings corresponding to the water supply network is taken as the water demand of the water supply network.

[0011] According to a method for determining water demand of a water supply node provided by the present invention, the water demand of each water supply network is determined according to the water demand of each water supply network, comprising: For any water supply node, half of the sum of the water demands of all water supply networks connected to it is determined as the water demand of the water supply node.

[0012] The present invention also provides a device for determining the water demand of a water supply node, comprising the following modules: Acquisition module, used to obtain land use data for national land space planning; A determination module is used to determine the water demand of the water supply node based on the national land space planning land use data and the stage information corresponding to the national land space planning land use data; the stage information includes at least one of the following: the control detailed planning preparation stage and the planning comprehensive implementation plan preparation stage.

[0013] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method for determining the water demand of a water supply node as described in any one of the above is implemented.

[0014] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the method for determining the water demand of a water supply node as described in any one of the above is implemented.

[0015] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the method for determining the water demand of a water supply node as described in any one of the above is implemented.

[0016] The method and device for determining the water demand of a water supply node provided by the present invention, during the process of determining the water demand of a water supply node, determine the water demand of a water supply node according to national land space planning land data and stage information corresponding to the national land space planning land data; that is, different methods are used to determine the water demand of a water supply node for national land space planning land data at different stages, and on the basis of making full use of the national land space planning land data, the characteristics of the national land space planning land data at each stage are effectively combined, thereby making the water demand of the water supply node finally determined more reasonable and scientific. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a flow chart of the method for determining the water demand of a water supply node provided by the present invention.

[0019] Figure 2 It is a schematic diagram of the comprehensive implementation plan provided by the present invention.

[0020] Figure 3 This is a schematic diagram of Thiessen polygon division of water supply nodes provided by the present invention.

[0021] Figure 4 It is a flow chart for calculating the water demand of nodes in the control detailed planning stage provided by the present invention.

[0022] Figure 5 It is a calculation logic diagram for determining the shortest water supply path provided by the present invention.

[0023] Figure 6 It is a flow chart for calculating water demand at nodes in the planning comprehensive implementation plan stage provided by the present invention.

[0024] Figure 7 It is a schematic diagram comparing the differences between the water demands of two calculation nodes provided by the present invention.

[0025] Figure 8 It is a schematic diagram of a device for determining water demand of a water supply node provided by the present invention.

[0026] Fig. 9 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Combine the following Figure 1-Figure 9 The present invention describes a method and device for determining water demand at a water supply node.

[0029] In order to facilitate a clearer understanding of the technical solutions of the embodiments of the present application, some technical contents related to the embodiments of the present application are first introduced.

[0030] In the water supply network, establishing a hydraulic model of the network to reasonably simulate and calculate the parameters such as the head, water volume and pipe diameter of the network, pipeline layout and the factory pressure of the water plant is an effective means to promote the efficient and low-carbon operation of the water supply system, and is also an effective tool to promote the scientific management of the water supply network. The reasonable allocation of node flow is a very critical and important link in the hydraulic simulation of the network. By adopting different calculation methods and combining regional water demand, the node flow of the pipeline in the water supply network system is reasonably determined. It is a key issue related to the scale of pipeline planning and design and the subsequent stability and safety of water supply to surrounding plots. It is also an important factor that reflects the accuracy of the network model and the reliability of the network. At present, the existing technical system has established a variety of allocation methods for node flow distribution, but there is a lack of reasonable solutions in terms of the applicability and scientificity of the methods.

[0031] "Optimization Strategy for Node Flow Allocation in Pipeline Network Modeling" discloses the currently commonly used node flow allocation methods, which mainly include the following: (1) Allocate node flow according to relative flow. That is, assume that the water volume of the pipeline network is evenly distributed on the water supply pipeline, and calculate the flow rate per unit water distribution length of the pipeline network based on this. The node flow is calculated based on this flow rate and the proportion of each section of the pipeline to the total pipeline length. (2) Allocate according to the proportion of water use in the block. Usually, according to certain principles, the water supply range is divided into several water supply blocks, and the water use weights of the nodes in the block are set according to the proportion of the block water use to the total water use. When allocating the total water use of the pipeline network, each node is allocated water according to the weight of the block in which it is located. (3) Allocate according to water use mode. Baseline flow allocation is performed according to the actual nodes where water volume occurs in the model, and the total water volume of the day is allocated to different time periods according to the daily water use changes of different types of users. The above three node flow allocation methods have their own advantages and disadvantages. In the actual pipe network modeling work, they are usually used in combination, such as the combination of pipe length allocation + block coefficient allocation, the method of allocating water according to the water use characteristics of the block, etc. The specific node flow allocation method to be adopted also needs to comprehensively consider the accuracy of the hydraulic model, the error acceptance range and the workload, as well as whether the project stage can provide detailed user information for comprehensive evaluation.

[0032] "Calculation of Node Flow in Real-Time Hydraulic Simulation of Urban Water Supply Networks" discloses the use of "water meter upstream" in the water supply network GIS to locate water use nodes in the hydraulic model, use of business charge data to determine the average water use of the nodes, and combination of on-site testing and other methods to determine the water use change curve.

[0033] "A method for inverting water demand at nodes in urban water supply networks containing water consumption information of large users" discloses a method for inverting water demand at nodes in urban water supply networks containing water consumption information of large users. By assimilating the pressure monitoring information, eliminating the faulty monitoring points, and smoothing the data of normal monitoring points, the water demand of the nodes to be allocated is initialized, the network is adjusted, the measured data of the monitoring points are compared, the error value of the adjustment result is calculated, and the sensitivity coefficient matrix of the pressure and flow of the monitoring points in the current state with respect to the water demand of the nodes is calculated. The measured data of water consumption of large users is used to solve the linear equations to obtain the adjustment direction and step size of the water demand of the nodes, and gradually update the water demand of the nodes. This method is based on the monitoring data of existing users, and lacks an effective response method for hydraulic calculations that do not have water consumption data in the planning and design stage. "A method for inverting water demand at nodes in urban water supply networks containing water consumption information of large users" discloses a method for verifying water demand of nodes based on prior information of water demand. First, the prior water demand and its covariance matrix are estimated through the user's remote water meter, water bill and user distribution information; the pipe network pressure and flow monitoring data and their covariance matrix are obtained through the pipe network pressure and flow sensors; the calibration objective function is established and linearized to obtain the node water demand iteration step and update the node water demand. This method is also based on the secondary water leveling calculation and water allocation of users with monitoring data, and cannot make scientific and reasonable allocation for the node flow calculation in the newly built area.

[0034] Among the methods disclosed in "Optimization Strategy for Node Flow Allocation in Pipeline Network Modeling", (1) allocating node flow by ratio flow is only applicable to areas with dense pipeline networks, evenly distributed users and relatively even water consumption. However, in areas with uneven pipeline networks and complex water use conditions, this method is prone to large errors. (2) The method of allocating by block water use ratio is applicable to areas with obvious differences in water use blocks, such as those with obvious industrial and residential areas. It can clearly determine the water use range of large users, but cannot locate the water use of nodes in the area. It is not universal. (3) The method of allocating by water use mode solves the problems of spatial and temporal flow allocation and reduces the errors caused by water allocation. However, it requires that the project for measuring node flow has actual water use process curves or detailed design plans. There is no better solution for node flow allocation in the planning stage. Although the method disclosed in "Calculation of node flow in real-time hydraulic simulation of urban water supply pipeline network" uses modern geographic information spatial analysis tools such as GIS, which helps to scientifically delineate user points, this method is only for cases with actual operation management water meter data and business fee data. It does not propose a solution for water allocation in the planning stage without current statistical data.

[0035] That is to say, in the existing hydraulic model of the water supply network, it is impossible to carry out scientific and reasonable node water consumption allocation. The traditional method of calculating flow rate distribution based on pipe length cannot be applied to urban spaces with uneven development density, which is prone to large errors and cannot guide subsequent actual engineering construction.

[0036] Figure 1 FIG. 1 is one of the flow charts of the method for determining the water demand of a water supply node provided by the present invention, such as Figure 1 As shown, the method includes the following: Step 101: Obtain land use data for national land space planning.

[0037] Specifically, in order to accurately calculate the water demand of the water supply node, the embodiment of the present application first needs to obtain the existing land use data of the national land space planning. That is, in the process of calculating the water demand of the water supply node, the land use layout of the national land space is fully considered, so that the water demand of the water supply node finally calculated can be more accurate and reasonable.

[0038] Step 102: Determine the water demand of the water supply node based on the national land space planning land use data and the stage information corresponding to the national land space planning land use data; the stage information includes at least one of the following: the control detailed planning preparation stage and the planning comprehensive implementation plan preparation stage.

[0039] Specifically, after obtaining the national land space planning land use data, the embodiments of the present application can determine the water demand of the water supply node in different ways based on the stage information corresponding to the national land space planning land use data. Optionally, the stage information corresponding to the land use data of national land space planning includes the stage of preparing the controlling detailed plan and the stage of preparing the comprehensive implementation plan of the plan; among them, the land use data of national land space planning in the stage of preparing the controlling detailed plan only clearly stipulates the land use attributes, land area and building scale of the block plot scale; and the land use data of national land space planning in the stage of preparing the comprehensive implementation plan of the plan also makes clear plans for the building plan layout, facility load demand and external guarantee conditions within the plot, that is, the land use data of national land space planning in the stage of preparing the comprehensive implementation plan of the plan is more detailed and accurate than the land use data of national land space planning in the stage of preparing the controlling detailed plan, so that different methods can be used to determine the water demand of water supply nodes for the land use data of national land space planning at different stages, and on the basis of making full use of the land use data of national land space planning at each stage, it also effectively combines the characteristics of the land use data of national land space planning at each stage, so that the water demand of the water supply node finally determined is more reasonable and scientific, and can accurately guide the subsequent engineering construction.

[0040] Optionally, in the stage of preparing the regulatory detailed plan, the land use nature and its compatibility and other land use function control requirements have been clarified; the land use indicators such as the plot ratio, building height, building density, greening rate of the plot have been proposed, and the land scale, scope and specific control requirements of infrastructure, public service facilities, and public safety facilities, and the control requirements of underground pipelines have been clarified. The characteristic of this planning land use stage is that the land use attributes, land area and building scale of the block plot scale are clearly stipulated.

[0041] Alternatively, if Figure 2 As shown in the figure, during the preparation stage of the comprehensive implementation plan of the plan, it includes construction engineering design requirements, land ownership, planning indicators, urban design requirements, municipal and traffic conditions, land supply methods, construction schedule, etc. Optionally, the comprehensive implementation plan of the plan is a detailed plan, and the preparation types are divided into two types: implementation unit and construction project. The implementation unit type comprehensive implementation plan mainly includes the coordination of construction space and non-construction space, incremental use and stock renewal, resource protection and construction tasks, implementation methods and cost control, etc.; the construction project type comprehensive implementation plan mainly includes the clarification of land ownership, planning indicators, urban design requirements, municipal and traffic conditions, land supply methods and construction schedule, etc. The characteristic of this planning stage is that the plot scale design plan is prepared at the same time, and the requirements for the building plan layout inside the plot, the facility load demand and the external guarantee conditions are clearer.

[0042] The method of the above embodiment, in the process of determining the water demand of the water supply node, determines the water demand of the water supply node according to the national land space planning land data and the stage information corresponding to the national land space planning land data; that is, different methods are used to determine the water demand of the water supply node for the national land space planning land data at different stages. On the basis of making full use of the national land space planning land data, it also effectively combines the characteristics of the national land space planning land data at each stage, thereby making the final determined water demand of the water supply node more reasonable and scientific.

[0043] In one embodiment, determining the water demand of the water supply node according to the national land space planning land use data and the stage information corresponding to the national land space planning land use data includes: When the stage information corresponding to the land use data of the national land space planning is the stage of preparation of the control detailed planning, the polygonal area corresponding to each water supply node is determined according to the land use data of the national land space planning in the stage of preparation of the control detailed planning, the location information of the planned water supply nodes and the Thiessen polygon algorithm; The water demand of each polygonal area is determined as the water demand of the water supply node corresponding to the polygonal area.

[0044] Specifically, the land use data of the national land space planning in the stage of preparing the regulatory detailed plan has clearly stipulated the land use attributes, land area and building scale of the block plot. This application combines the characteristics of the land use data of the national land space planning in this stage and uses the Thiessen polygon algorithm to accurately calculate the water demand of the water supply node. For example, Figure 3 As shown, after obtaining the land use data of the national land space planning and the planned water supply node location information in the stage of preparing the control detailed plan, the polygonal area uniquely corresponding to each water supply node can be determined based on the Thiessen polygon algorithm; then, based on the preset water use standard for construction land, the water demand corresponding to each polygonal area can be calculated, and the water demand of the polygonal area can be used as the water demand of the corresponding water supply node, thereby realizing the accurate and efficient calculation of the water demand of the water supply node in the stage of preparing the control detailed plan.

[0045] Alternatively, Thiessen polygons are a type of partitioning of a spatial plane, characterized in that any position within a polygon is closest to the sample point (water supply node) of the polygon, farthest from the sample point in the adjacent polygon, and each polygon contains and only contains one sample point. Due to the equal-division feature of Thiessen polygons in spatial partitioning, they can be used to solve problems such as the nearest point, the minimum enclosing circle, and many spatial analysis problems, such as adjacency, proximity, and accessibility analysis. The intrinsic mathematical calculation principle of Thiessen polygons is as follows: Suppose there is a set of discrete points ( , )(i=1,2,3,…,k; j=1,2,3,…,k, k is the number of discrete points), if area B is divided into k adjacent polygons by a set of straight line segments, such that: (1) each polygon contains only one discrete point; (2) if any point on area B ( , ) is located at the discrete point ( , ) inside the polygon, the inequality < Always holds true when i≠j; if the point ( , ) is located at the discrete point ( , ) on the common edge of the two polygons, then the equation < The resulting polygon is called Thiessen polygon.

[0046] For example, Figure 4As shown in the figure, when the stage information corresponding to the land use data of national land space planning is the stage of preparation of control detailed planning, the specific process of determining the water demand of water supply nodes is as follows: (1) Create a new planning project on the AutoCAD platform; (2) Loading regulatory detailed planning data (including planned road network); (3) Rationally draw the water supply network and water supply nodes on the control detailed planning road network map and define the node numbers; (4) Preserve water supply planning maps; (5) Vectorized water supply planning network and node data; (6) Calling the control detailed planning land use data on the ArcGIS platform; (7) Using ArcGIS’s Thiessen polygon drawing tool, the land around the water supply node is divided into Thiessen polygons. That is, by integrating AutoCAD and ArcGIS tools, a high degree of intelligence in data analysis and statistics is achieved, which improves the scientificity and convenience of node flow distribution.

[0047] (8) Load the water use standard for construction land, calculate the water demand of the land in ArcGIS platform, summarize the node flow by node number, and obtain the node flow of each node in the water supply network.

[0048] That is, the calculation of water consumption of water supply nodes at the control detailed planning scale in this application is based on the land use planning information at this stage. The water supply nodes are divided into relatively uniform Thiessen polygons, and the divided units are used as the minimum measurement units to count the water demand of the plots. The node flows are summarized by nodes. When the future construction plan within the plot is unknown, the possibility of the plot to draw water from the surrounding water supply pipelines can be retained to the maximum extent, and the scale and water volume can be accurately reserved for the planned pipelines.

[0049] The method of the above embodiment, after obtaining the land use data of the national land space planning and the planned water supply node location information in the stage of preparing the control detailed plan, can determine the polygonal area uniquely corresponding to each water supply node based on the Thiessen polygon algorithm; then, based on the preset water use standard for construction land, the water demand corresponding to each polygonal area can be calculated, and the water demand of the polygonal area can be used as the water demand of the corresponding water supply node, thereby realizing the accurate and efficient calculation of the water demand of the water supply node in the stage of preparing the control detailed plan.

[0050] In one embodiment, determining the water demand of the water supply node according to the national land space planning land use data and the stage information corresponding to the national land space planning land use data includes: When the stage information corresponding to the land use data of the national land space planning is the stage of preparing the comprehensive implementation plan of the plan, the water demand of each water supply network is determined according to the land use data of the national land space planning at the stage of preparing the comprehensive implementation plan of the plan and the planned water supply network information; According to the water demand of each water supply network, the water demand of the water supply nodes connected to each water supply network is determined.

[0051] Specifically, after obtaining the land use data of the land space planning in the preparation stage of the comprehensive implementation plan of the plan, the embodiment of the present application can count the water demand of the plot building into the corresponding water supply network, and then according to the water demand of each water supply network, the water demand of the water supply node connected to each water supply network can be quickly determined, so as to realize the accurate and efficient calculation of the water demand of the water supply node in the preparation stage of the comprehensive implementation plan of the plan. Optionally, the correspondence between the plot building and the water supply network can be determined based on the preset planning results, or can be determined based on other methods, which is not specifically limited in the embodiment of the present application. Optionally, the land use data of the land space planning in the preparation stage of the comprehensive implementation plan of the plan is more clear and detailed for the requirements of the building plan layout, facility load demand and external guarantee conditions within the plot, so that the water demand of the water supply node can be calculated by superimposing and summarizing the water demand of each building. Compared with the water demand calculation in the control detailed planning stage, which is only to the plot unit scale, it makes full use of the land use data of the land space planning in the preparation stage of the comprehensive implementation plan of the plan, so that the water demand of the water supply node calculated in the end is more accurate.

[0052] The method of the above embodiment makes full use of the land use data of the national land space planning in the stage of preparing the comprehensive implementation plan of the plan in the process of determining the water demand of the water supply node. By counting the water demand of the buildings on the plot into the corresponding water supply network, and then according to the water demand of each water supply network, the water demand of the water supply nodes connected to each water supply network can be quickly determined, thereby realizing accurate and efficient calculation of the water demand of the water supply nodes in the stage of preparing the comprehensive implementation plan of the plan, and making the finally calculated water demand of the water supply nodes more accurate.

[0053] In one embodiment, the water demand of each water supply network is determined based on the land use data of the national land space planning and the planned water supply network information in the preparation stage of the comprehensive planning implementation plan, including: Determine the correspondence between each building in the planned land use data and each water supply network; The water demand of each water supply network is determined based on the correspondence between each building in the planned land use data and each water supply network, as well as the water demand of each building in the planned land use data.

[0054] Specifically, in the embodiment of the present application, after determining the correspondence between each building in the planned land data and each water supply network, the water demand of each water supply network can be determined based on the correspondence between each building in the planned land data and each water supply network, as well as the water demand of each building in the planned land data; and then through superposition and aggregation, the water demand of the water supply nodes connected to each water supply network can be quickly determined, so as to achieve accurate and efficient calculation of the water demand of the water supply nodes in the preparation stage of the comprehensive implementation plan of the plan. Optionally, the correspondence between each building in the planned land data and each water supply network can be comprehensively determined based on information such as the geographical information of the planned land, the type of planned land, the importance of the planned land, industrial water or residential water, and the location of the water supply network planning, and no specific restrictions are made in the embodiment of the present application.

[0055] In one embodiment, determining the correspondence between each building in the planned land use data and each water supply network includes: For any building in the planned land use data, the water supply network closest to the building among multiple water supply networks is determined as the water supply network corresponding to the building; According to the correspondence between each building in the planned land use data and each water supply network, as well as the water demand of each building in the planned land use data, the water demand of each water supply network is determined, including: For any water supply network, the sum of the water demands of multiple buildings corresponding to the water supply network is taken as the water demand of the water supply network.

[0056] Specifically, in the embodiment of the present application, for any building in the planned land use data, the water supply network closest to the building among multiple water supply networks is determined as the water supply network corresponding to the building, thereby determining a nearest water supply route for each building in the plot, and also reserving the nearest access conditions for the pipeline inlet and outlet of the plot design plan, thereby effectively reducing the construction cost and construction difficulty, and improving the efficiency of later construction and water supply efficiency. Optionally, the specific process of determining the correspondence between the building in the plot and the water supply network is as follows: Figure 5 Optionally, after determining the correspondence between each building in the planned land use data and each water supply network, the water demand of the building information can be superimposed to obtain the water demand of the water supply network, thereby realizing accurate and rapid calculation of the water demand of the water supply network.

[0057] The method of the above embodiment, for any building in the planned land use data, determines the water supply network closest to the building among multiple water supply networks as the water supply network corresponding to the building, thereby determining a nearest water supply route for each building in the plot, and also reserving the nearest access conditions for the pipeline inlet and outlet of the plot design plan, thereby effectively reducing the construction cost and construction difficulty, and improving the efficiency of later construction and water supply efficiency. In addition, the water demand of the water supply network is obtained by summarizing the water demand of the nearest building information, so that the pipeline scale, pipeline basin and surrounding users are more matched, and the hydraulic calculation results are closer to the subsequent actual situation, realizing accurate and rapid calculation of the water demand of the water supply network.

[0058] In one embodiment, determining the water demand of the water supply nodes connected to each water supply network according to the water demand of each water supply network includes: For any water supply node, half of the sum of the water demands of all water supply networks connected to it is determined as the water demand of the water supply node.

[0059] Specifically, in an embodiment of the present application, after the water demand of the buildings on the plot is counted in the planned water supply network of the road closest to it, and the water demand of all water supply networks is obtained in turn by superimposing the water demand of each building, 0.5 times the water demand of the water supply network is extracted to the water supply nodes at both ends of the water supply network, so as to accurately and quickly determine the water demand of each water supply node.

[0060] For example, Figure 6 As shown in the figure, during the preparation stage of the comprehensive implementation plan, the specific process for determining the water demand of the water supply node is as follows: (1) Create a new planning project on the AutoCAD platform; (2) Load the land use planning data (including the planned road network) at the stage of comprehensive implementation plan; (3) Rationally draw the water supply network and water supply nodes on the planned road network map and define the node numbers; (4) Preserve water supply planning maps; (5) Vectorized water supply planning network and node data; (6) Calling the land use data of the comprehensive planning implementation plan on the ArcGIS platform; (7) Use the self-developed closest distance tracking tool to extract the water supply pipeline corresponding to the planned road closest to the single building (measured by the center point of the building) within the project scope; (8) Establish a mapping relationship between the building number and the corresponding water supply pipeline number of the external road; (9) Load the water use standard for construction land (same as above) to calculate the water demand of the building plot, or use the water demand data of the building provided in the design plan to summarize the flow of the pipe section according to the pipe section number of the water supply pipeline; (10) 1 / 2 times the flow rate of all pipes connected to the water supply node is statistically summarized as the node flow rate of the water supply node, and the node flow rates of all water supply nodes are obtained by analogy.

[0061] It should be noted that this application has greatly improved the intelligence and convenience of hydraulic calculations of water supply models by calling relevant data such as planned land and integrating AutoCAD and ArcGIS software, providing intelligent solutions for hydraulic calculations of water supply models at different stages of project planning, and realizing the scientific and reasonable allocation of node flow of the hydraulic model of the water supply network, thereby reasonably determining the scale and layout of the water supply pipelines, and improving the scientificity and reliability of water supply calculations. Moreover, for the calculation of node water consumption in the comprehensive implementation plan stage, due to the addition of detailed plot information provided by the plot design unit, it is possible to use the shortest distance water supply according to the layout of the building, or directly select the water supply pipeline according to the design plan, and refine the accuracy of the building unit matching water supply pipelines and water supply nodes.

[0062] In the above method, compared with the existing technology of allocating node flow according to pipe length, block or water use pattern, without obtaining the water use structure and pattern within the planned land area, a scientific and reasonable method is adopted to calculate the node water consumption based on the smallest unit information such as planned plots or buildings. It is more universal and solves the problems of extensive water calculation methods, simple assumptions and limited application scenarios in traditional methods, providing effective support for subsequent engineering design and construction.

[0063] For example, the difference between computing node traffic in the control detailed planning preparation stage and the planning comprehensive implementation plan preparation stage is as follows: Figure 7As shown. In the stage of control detailed planning, the planning data only includes the plot information, so the polygon area uniquely corresponding to each water supply node can be determined based on the Thiessen polygon algorithm; then based on the preset water use standard for construction land, the water demand corresponding to each polygon area can be calculated, and the water demand of the polygon area can be used as the water demand of the corresponding water supply node, realizing the accurate and efficient calculation of the water demand of the water supply node in the stage of control detailed planning. The land use data of national land space planning in the preparation stage of comprehensive implementation plan are more clear and detailed about the building layout, facility load demand and external guarantee conditions within the plot, so that the land use data of national land space planning in the preparation stage of comprehensive implementation plan can be fully utilized. For any building in the planning land use data, the water supply network closest to the building in multiple water supply networks is determined as the water supply network corresponding to the building, and the water demand of the water supply network and water supply node is calculated by superimposing and summarizing the water demand of each building, so that the water demand of the water supply node calculated in the end is more accurate. Compared with the water demand calculation in the control detailed planning stage, which is only to the plot unit scale, the water volume prediction in the comprehensive implementation plan stage is accurate to the building unit, and a nearest water supply route is determined for each building in the plot, and the nearest access conditions are reserved for the pipeline inlet and outlet of the plot design plan, which can effectively reduce the construction cost and construction difficulty, improve the efficiency of later construction and water supply efficiency, and obtain the node flow by superimposing the water demand of the nearest building information, so that the pipeline scale, pipeline basin and surrounding users are more matched, and the hydraulic calculation results are closer to the actual situation in the future.

[0064] It should be noted that this application overcomes the limitation of the existing technology that relies on the water use information that has already occurred for modeling. It is a node water volume calculation method that is completely based on the planning scenario. At the same time, it overcomes the problem that the existing technology uses pipe length to allocate water demand, which is only applicable to large-scale node flow calculations and the node flow distribution error is too large. The method of this application can provide systematic, scientific, and targeted guidance for water supply planning work at different planning stages, and promote high-quality development of the water supply industry.

[0065] The following is a description of the device for determining the water demand of a water supply node provided by the present invention. The device for determining the water demand of a water supply node described below and the method for determining the water demand of a water supply node described above can be referred to in correspondence with each other. Figure 8 As shown, including: The acquisition module 810 is used to obtain land use data for national land space planning; Determination module 820 is used to determine the water demand of the water supply node based on the national land space planning land use data and the stage information corresponding to the national land space planning land use data; the stage information includes at least one of the following: the control detailed planning preparation stage and the planning comprehensive implementation plan preparation stage.

[0066] Optionally, the determining module 820 is specifically configured to: When the stage information corresponding to the land use data of the national land space planning is the stage of preparation of the control detailed planning, the polygonal area corresponding to each water supply node is determined according to the land use data of the national land space planning in the stage of preparation of the control detailed planning, the location information of the planned water supply nodes and the Thiessen polygon algorithm; The water demand of each polygonal area is determined as the water demand of the water supply node corresponding to the polygonal area.

[0067] Optionally, the determining module 820 is specifically configured to: When the stage information corresponding to the land use data of the national land space planning is the stage of preparing the comprehensive implementation plan of the plan, the water demand of each water supply network is determined according to the land use data of the national land space planning at the stage of preparing the comprehensive implementation plan of the plan and the planned water supply network information; According to the water demand of each water supply network, the water demand of the water supply nodes connected to each water supply network is determined.

[0068] Optionally, the determining module 820 is specifically configured to: Determine the correspondence between each building in the planned land use data and each water supply network; The water demand of each water supply network is determined based on the correspondence between each building in the planned land use data and each water supply network, as well as the water demand of each building in the planned land use data.

[0069] Optionally, the determining module 820 is specifically configured to: For any building in the planned land use data, the water supply network closest to the building among multiple water supply networks is determined as the water supply network corresponding to the building; According to the correspondence between each building in the planned land use data and each water supply network, as well as the water demand of each building in the planned land use data, the water demand of each water supply network is determined, including: For any water supply network, the sum of the water demands of multiple buildings corresponding to the water supply network is taken as the water demand of the water supply network.

[0070] Optionally, the determining module 820 is specifically configured to: For any water supply node, half of the sum of the water demands of all water supply networks connected to it is determined as the water demand of the water supply node.

[0071] Fig. 9 An example of a physical structure diagram of an electronic device is provided, and the electronic device may include: a processor 910, a communication interface 920, a memory 930, and a communication bus 940, wherein the processor 910, the communication interface 920, and the memory 930 communicate with each other through the communication bus 940. The processor 910 may call the logic instructions in the memory 930 to execute a method for determining the water demand of a water supply node, and the method includes: obtaining land use data for national space planning; determining the water demand of a water supply node according to the land use data for national space planning and the stage information corresponding to the land use data for national space planning; the stage information includes at least one of the following: the stage of preparing a control detailed plan and the stage of preparing a comprehensive implementation plan for the plan.

[0072] In addition, the logic instructions in the above-mentioned memory 930 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0073] On the other hand, the present invention also provides a computer program product, which includes a computer program, and the computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the method for determining the water demand of a water supply node provided by the above methods, and the method includes: obtaining land data for national land space planning; determining the water demand of the water supply node based on the land data for national land space planning and the stage information corresponding to the land data for national land space planning; the stage information includes at least one of the following: the stage of preparing a control detailed plan and the stage of preparing a comprehensive implementation plan for the plan.

[0074] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it is implemented to execute the method for determining the water demand of a water supply node provided by the above-mentioned methods, the method comprising: obtaining land use data for national land space planning; determining the water demand of the water supply node based on the land use data for national land space planning and the stage information corresponding to the land use data for national land space planning; the stage information comprises at least one of the following: the stage of preparing a control detailed plan and the stage of preparing a comprehensive implementation plan for the plan.

[0075] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0076] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for determining water demand at a water supply node, characterized in that: include: Obtain land use data for national land space planning; The water demand of the water supply node is determined based on the national land space planning land use data and the stage information corresponding to the national land space planning land use data; the stage information includes at least one of the following: the control detailed planning preparation stage and the planning comprehensive implementation plan preparation stage.

2. The method for determining the water demand of a water supply node according to claim 1, characterized in that: The determining the water demand of the water supply node according to the national land space planning land use data and the stage information corresponding to the national land space planning land use data includes: In the case where the stage information corresponding to the land use data of the national land space planning is the stage of preparation of the control detailed planning, the polygonal area corresponding to each water supply node is determined according to the land use data of the national land space planning in the stage of preparation of the control detailed planning, the location information of the planned water supply nodes and the Thiessen polygon algorithm; The water demand of each polygonal area is determined as the water demand of the water supply node corresponding to the polygonal area.

3. The method for determining the water demand of a water supply node according to claim 1, characterized in that: The determining the water demand of the water supply node according to the national land space planning land use data and the stage information corresponding to the national land space planning land use data includes: When the stage information corresponding to the land use data of the national land space planning is the stage of preparing the comprehensive implementation plan of the plan, the water demand of each water supply network is determined according to the land use data of the national land space planning at the stage of preparing the comprehensive implementation plan of the plan and the planned water supply network information; According to the water demand of each water supply network, the water demand of the water supply nodes connected to each water supply network is determined.

4. The method for determining the water demand of a water supply node according to claim 3, characterized in that: The water demand of each water supply network is determined based on the land use data of the national land space planning and the planned water supply network information in the preparation stage of the comprehensive implementation plan, including: Determine the correspondence between each building in the planned land use data and each water supply network; The water demand of each water supply network is determined according to the corresponding relationship between each building in the planned land use data and each water supply network, and the water demand of each building in the planned land use data.

5. The method for determining the water demand of a water supply node according to claim 4, characterized in that: Determining the correspondence between each building in the planned land use data and each water supply network includes: For any building in the planned land use data, the water supply network closest to the building among multiple water supply networks is determined as the water supply network corresponding to the building; Determining the water demand of each water supply network according to the correspondence between each building in the planned land use data and each water supply network, and the water demand of each building in the planned land use data, includes: For any water supply network, the sum of the water demands of multiple buildings corresponding to the water supply network is taken as the water demand of the water supply network.

6. The method for determining the water demand of a water supply node according to claim 5, characterized in that: Determining the water demand of each water supply node connected to each water supply network according to the water demand of each water supply network includes: For any water supply node, half of the sum of the water demands of all water supply networks connected to it is determined as the water demand of the water supply node.

7. A device for determining water demand of a water supply node, characterized in that: include: Acquisition module, used to obtain land use data for national land space planning; A determination module is used to determine the water demand of the water supply node based on the national land space planning land use data and the stage information corresponding to the national land space planning land use data; the stage information includes at least one of the following: the control detailed planning preparation stage and the planning comprehensive implementation plan preparation stage.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the method for determining the water demand of a water supply node as described in any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for determining the water demand of a water supply node according to any one of claims 1 to 6 is implemented.

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