A method for monitoring and analyzing siltation in drainage pipe networks

Abstract

The present invention discloses a method for monitoring and analyzing siltation of drainage pipe networks, which relates to the field of siltation monitoring and analysis, including monitoring the vertical exchange flow data from a two-dimensional surface model to a one-dimensional underground pipe network model; rasterizing the positions where the vertical exchange flow is lower than the mean; connecting the grids to form a closed area, and monitoring the water flow exchange in the closed area in the horizontal direction; monitoring whether the direction of the water flow exchange of surface water in the horizontal direction along the closed area is toward the outside, and monitoring whether the direction of the water flow exchange of the underground pipe network in the horizontal direction along the closed area is toward the inside; if both are true, the closed area is judged to be a waterlogged community, and a warning message is issued for on-site investigation. The present invention uses rasterization processing to judge and screen out missed waterlogged community areas, prevent the occurrence of disasters, improve the drainage capacity and waterlogging prevention level of the city, and ensure the safety and convenience of community residents.

Description

Technical Field

[0001] The invention relates to the field of siltation monitoring and analysis, and in particular to a method for monitoring and analyzing siltation in a drainage network. Background Art

[0002] The problem of urban road waterlogging is a complex and multi-dimensional issue, involving urban planning, infrastructure construction, maintenance and management, etc. As the basic unit of the city, the experience and perception of its residents are of great significance for understanding and solving this problem.

[0003] The monitoring system can collect key data such as water level, flow, and water quality in real time, helping to promptly detect problems such as pipe blockage and leakage, and early warning of waterlogging risks. For road damage and waterlogging, the community organizes staff and maintenance personnel to conduct on-site inspections, carefully check the layout of underground pipelines, develop repair plans, and divert rainwater into the municipal main drainage pipeline to solve the waterlogging problem;

[0004] At present, urban monitoring systems are mostly used for monitoring public facilities areas, which is not conducive to monitoring community road waterlogging and drainage network siltation problems. Therefore, the present invention considers a method for monitoring and analyzing drainage network siltation. Summary of the invention

[0005] The present invention provides a method for monitoring and analyzing siltation in a drainage network, which solves the problems of the prior art and comprises the following steps:

[0006] Monitor the vertical exchange flow data from the surface two-dimensional model to the underground one-dimensional pipe network model;

[0007] The locations where the vertical exchange flow is below the mean are rasterized;

[0008] The grids are connected to form a closed area, and the water flow exchange in the closed area in the horizontal direction is monitored;

[0009] The judgment on the water flow exchange in the horizontal direction is as follows:

[0010] Monitoring whether the direction of water flow exchange in the horizontal direction of surface water along the closed area is toward the outside, and monitoring whether the direction of water flow exchange in the horizontal direction of the underground pipe network along the closed area is toward the inside;

[0011] If both are true, the closed area is judged to be a waterlogged community, and a warning message is issued for on-site inspection.

[0012] Furthermore, before the monitoring of the vertical exchange flow data from the surface two-dimensional model to the underground one-dimensional pipe network model, the following steps are also performed:

[0013] Import the one-dimensional urban pipe network model and the two-dimensional surface model respectively;

[0014] The grid divides the two-dimensional surface model into a plurality of surface cells;

[0015] A flow exchange formula is set between adjacent surface cells, and the parameters of the flow exchange formula are set according to the slope differences between the surface cells.

[0016] Furthermore, the grid divides the two-dimensional surface model into a plurality of surface cells, and further includes:

[0017] The vertical projection of the surface cells corresponds to the nodes and pipe segments of the underground pipe network. The pipe segment attribute data and node attribute data are read and processed in batches, and the network relationship between the pipe segments and nodes is automatically established.

[0018] Furthermore, the grid division of the positions where the vertical exchange flow is lower than the average value specifically includes:

[0019] Calculate multiple means for each geographic level and mark the geographic locations below the mean at each level;

[0020] The area marked with geographic location data is divided into grids of different scales according to the corresponding geographic level jurisdiction.

[0021] Furthermore, the connection grids form a closed area, and the water flow exchange in the closed area in the horizontal direction is monitored, specifically including:

[0022] Adjacent grids are connected, and closed areas including non-public facilities areas are selected. Data collection and data monitoring are performed on the two-dimensional surface model and the underground one-dimensional pipe network model inwardly and outwardly in the closed area.

[0023] Furthermore, the data monitoring of the closed area on the two-dimensional surface model includes:

[0024] Compare the expected data of the sensor data covered by the outer edge of the closed area with the sensor data adjacent to the outer edge of the closed area to analyze the water flow exchange data in the horizontal direction, analyze the water flow direction of the remaining flow after the inflow and outflow are offset, and determine whether it is outflow from the outer edge of the closed area to the outside of the closed area;

[0025] If so, continue to determine whether the water flow exchange direction of the underground pipe network is inward in the horizontal direction.

[0026] Furthermore, the data monitoring of the closed area on the two-dimensional surface model also includes:

[0027] Compare the expected data of the sensor data covered by the inner edge of the closed area with the data of the adjacent sensors inwardly toward the inner edge of the closed area to analyze the water flow exchange data in the horizontal direction, analyze the water flow direction of the remaining flow after the inflow and outflow are offset, and determine whether it is flowing out from the inside of the closed area to the inner edge of the closed area;

[0028] If so, continue to determine whether the water flow exchange direction of the underground pipe network is inward in the horizontal direction.

[0029] Furthermore, if so, then continue to determine whether the water flow exchange direction of the underground pipe network in the horizontal direction is inward, specifically including:

[0030] The data of the one-dimensional pipe network model in the underground of the closed area is monitored. The expected data of the sensor data of the nodes and pipe sections covered by the outer edge of the closed area are compared with the sensor data of the nodes and pipe sections adjacent to the outer edge of the closed area to analyze the water flow exchange data in the horizontal direction. First, the vertical flow exchange of the corresponding nodes is calculated, and the nodes are classified into overloaded nodes and non-overloaded nodes. The non-overloaded nodes are selected to calculate the node return flow through the orifice flow formula, and the node return flow data is screened out from the pipe section where the node is located;

[0031] Then, it is calculated whether the water flow direction in the pipe section covered by the outer edge of the closed area is from the outside of the closed area to the outer edge of the closed area;

[0032] If so, the closed area is judged to be a waterlogged community.

[0033] Furthermore, in the step of then calculating whether the direction of water flow in the pipe section covered by the outer edge of the closed area is flowing from the outside of the closed area to the outer edge of the closed area, the method further includes:

[0034] Calculate the overload nodes covered by the closed area, project them upward to the ground, and connect the overload nodes covered by the closed area to form a new closed shape;

[0035] Delete the part of the closed area that exceeds the closed shape.

[0036] Furthermore, the deleting of the portion of the closed area that exceeds the closed shape also includes: analyzing the overload nodes adjacent to the overload nodes covered by the closed area outside the closed area, projecting the continuously adjacent overload nodes that exceed the closed area upward to the ground, connecting all the overload nodes along the outer circle to form a second closed area, adding the portion of the second closed area that exceeds the closed shape to the closed shape, and obtaining the final closed shape as the maximum waterlogging area range of the waterlogged community.

[0037] The present invention provides a method for monitoring and analyzing siltation in drainage pipe networks, which uses raster processing to make multi-layer judgments to screen out missed waterlogged community areas, prevent the occurrence of disasters, improve the city's drainage capacity and waterlogging prevention level, and ensure the safety and convenience of community residents. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of the present invention, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0039] Figure 1 A flow chart of a method for monitoring and analyzing siltation in a drainage network provided by an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0040] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0041] In order to efficiently solve the problem of community waterlogging caused by waterlogging on community roads and siltation in drainage pipe networks, the present invention, based on the monitoring system, reversely searches for areas corresponding to areas where the vertical exchange flow is lower than the monitoring value, and combines historical data to monitor communities where waterlogging may occur. That is, communities within the safety monitoring range may cause waterlogging due to poor drainage from pipe network nodes. At this time, the horizontal water flow exchange in the community is higher than the monitoring threshold, or the monitoring system has a high false alarm rate due to the low-lying terrain within the safety threshold. The present invention considers using block-shaped local divisions of nodes and pipe sections, outlining the division from the boundaries of the community, and judging whether there is waterlogging based on the consistency of the monitoring data generated by the block area, resulting in false alarms that are still within the safety threshold.

[0042] The present invention is conceived as follows:

[0043] Since it is difficult to discharge surface water into underground pipes, the closed area is divided according to the common monitoring data of surface water discharged into underground pipes, and the judgment strategy is implemented as follows: if the direction of water flow exchange in the horizontal direction of the surface water monitored along the closed area is toward the outside, and the direction of water flow exchange in the horizontal direction of the underground pipe network monitored along the closed area is toward the inside, it is determined that the community may be flooded.

[0044] The technical solution of the present invention and how the technical solution of the present invention solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0045] Embodiment 1: This embodiment provides a method for monitoring and analyzing siltation in a drainage network. Figure 1 As shown, the following steps are included:

[0046] Import the one-dimensional urban pipe network model and the two-dimensional surface model respectively, divide the two-dimensional surface model into multiple surface cells by meshing, and the vertical projection of the surface cells corresponds to the nodes and pipe sections of the underground pipe network. The pipe section attribute data and node attribute data are batch read and processed, and the network relationship between the pipe sections and nodes is automatically established. A flow exchange formula is set between adjacent surface cells, and the parameters of the flow exchange formula are set according to the slope difference between the surface cells. Divide the two-dimensional surface model into multiple surface cells by meshing;

[0047] S1, monitoring the vertical exchange flow data from the surface two-dimensional model to the underground one-dimensional pipe network model;

[0048] S2, gridding the locations where the vertical exchange flow is lower than the mean;

[0049] Specifically include:

[0050] Calculate multiple means for each geographic level and mark the geographic locations below the mean at each level;

[0051] The area marked with geographic location data is divided into grids of different scales according to the corresponding geographical level jurisdiction;

[0052] S3, connecting grids to form a closed area, and monitoring the water flow exchange in the closed area in the horizontal direction;

[0053] Specifically include:

[0054] Adjacent grids are connected, and closed areas including non-public facilities areas are selected. Data collection and data monitoring are performed on the two-dimensional surface model and the underground one-dimensional pipe network model inwardly and outwardly in the closed area.

[0055] S31, the water flow exchange in the horizontal direction is judged as follows: the direction of the water flow exchange in the horizontal direction of the surface water monitored along the closed area is outward,

[0056] Among them, the data monitoring of the closed area on the two-dimensional surface model includes:

[0057] Compare the expected data of the sensor data covered by the outer edge of the closed area with the sensor data adjacent to the outer edge of the closed area to analyze the water flow exchange data in the horizontal direction, analyze the water flow direction of the remaining flow after the inflow and outflow are offset, and determine whether it is outflow from the outer edge of the closed area to the outside of the closed area;

[0058] Alternatively, the expected data of the sensor data covered along the inner edge of the closed area is compared with the sensor data adjacent to the inner edge of the closed area to analyze the water flow exchange data in the horizontal direction, analyze the water flow direction of the remaining flow after the inflow and outflow are offset, and determine whether it is flowing out from the inside of the closed area to the inner edge of the closed area;

[0059] S311, if not, terminate the judgment process;

[0060] S312, if yes, continue to determine whether the water flow exchange direction of the underground pipe network in the horizontal direction is inward;

[0061] Specifically include:

[0062] The data of the one-dimensional pipe network model in the underground of the closed area is monitored. The expected data of the sensor data of the nodes and pipe sections covered by the outer edge of the closed area are compared with the sensor data of the nodes and pipe sections adjacent to the outer edge of the closed area to analyze the water flow exchange data in the horizontal direction. First, the vertical flow exchange of the corresponding nodes is calculated, and the nodes are classified into overloaded nodes and non-overloaded nodes. The non-overloaded nodes are selected to calculate the node return flow through the orifice flow formula, and the node return flow data is screened out from the pipe section where the node is located;

[0063] Then, it is calculated whether the water flow direction in the pipe section covered by the outer edge of the closed area is from the outside of the closed area to the outer edge of the closed area;

[0064] S3121. If so, the closed area is determined to be a waterlogged community, and a warning message is issued for on-site inspection.

[0065] S3122, if not, then exit the judgment process;

[0066] It also includes accurately outlining the size of the waterlogged community corresponding to the closed area. The specific steps are as follows: calculate the overload nodes covered by the closed area, project them upward to the ground, and connect the overload nodes covered by the closed area to form a new closed shape; delete the part of the closed area that exceeds the closed shape, analyze the overload nodes adjacent to the overload nodes covered by the closed area outside the closed area, project the overload nodes that are continuously adjacent and exceed the closed area upward to the ground, connect all the overload nodes in the outer circle to form a second closed area, add the part of the second closed area that exceeds the closed shape to the closed shape, and obtain the final closed shape as the maximum waterlogged area range of the waterlogged community.

[0067] In the several embodiments provided by the present invention, it should be understood that the disclosed systems and methods can be implemented in other ways. For example, the system embodiments described above are only illustrative, for example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0068] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0069] In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of hardware plus software functional modules.

[0070] Those skilled in the art will appreciate that the embodiments of the present invention may be provided as methods or systems. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects.

[0071] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0072] The above are only embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

[0073] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The description and examples are to be considered exemplary only, and the true scope and spirit of the present invention is indicated by the claims above.

[0074] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A method for monitoring and analyzing siltation in a drainage network, characterized in that: The steps include: Monitor the vertical exchange flow data from the surface two-dimensional model to the underground one-dimensional pipe network model; The locations where the vertical exchange flow is below the mean are rasterized; The grids are connected to form a closed area, and the water flow exchange in the closed area is monitored in the horizontal direction, including: connecting adjacent grids, selecting a closed area including a non-public facility area, and collecting and monitoring data on the surface two-dimensional model and the underground one-dimensional pipe network model of the closed area inward and outward; wherein, the data monitoring of the closed area on the surface two-dimensional model includes: comparing the expected data of the sensor data covered by the outer edge of the closed area with the sensor data adjacent to the outer edge of the closed area to analyze the water flow exchange data in the horizontal direction, analyzing the water flow direction of the remaining flow after the inflow and outflow are offset, and judging whether it is a closed area. The outer edge of the area flows out to the outside of the closed area; if so, continue to judge whether the water flow exchange direction of the underground pipe network in the horizontal direction is inward; the data monitoring of the closed area on the surface two-dimensional model also includes: comparing the expected data of the sensor data covered by the inner edge of the closed area with the sensor data adjacent to the inner edge of the closed area to analyze the water flow exchange data in the horizontal direction, analyze the water flow direction of the remaining flow after the inflow and outflow are offset, and judge whether it is from the inside of the closed area to the inner edge of the closed area; if so, continue to judge whether the water flow exchange direction of the underground pipe network in the horizontal direction is inward, specifically including: the closed area in the underground Data monitoring of the vascular network model, using the expected data of the node and pipe segment sensor data covered by the outer edge of the closed area to compare with the node and pipe segment sensor data adjacent to the outer edge of the closed area to analyze the water flow exchange data in the horizontal direction, first calculate the vertical flow exchange of the corresponding node, classify the nodes into overloaded nodes and non-overloaded nodes, select the non-overloaded nodes to calculate the node return flow through the orifice flow formula, and filter out the node return flow data from the pipe segment where the node is located; then calculate whether the water flow direction in the pipe segment covered by the outer edge of the closed area is from the outside of the closed area to the outer edge of the closed area. If so, the closed area is judged to be waterlogged community; including: calculating the overload nodes covered by the closed area, projecting upward to the ground, and connecting the overload nodes covered by the closed area to form a new closed shape; deleting the part of the closed area that exceeds the closed shape, and also including: analyzing the overload nodes adjacent to the overload nodes covered by the closed area outside the closed area, projecting the overload nodes that are continuously adjacent and exceed the closed area upward to the ground, connecting all overload nodes along the outer circle to form a second closed area, adding the part of the second closed area that exceeds the closed shape to the closed shape, and obtaining the final closed shape as the maximum waterlogging area range of the waterlogged community; The judgment on the water flow exchange in the horizontal direction is as follows: Monitoring whether the direction of water flow exchange in the horizontal direction of surface water along the closed area is toward the outside, and monitoring whether the direction of water flow exchange in the horizontal direction of the underground pipe network along the closed area is toward the inside; If both are true, the closed area is judged to be a waterlogged community, and a warning message is issued for on-site inspection.

2. A method for monitoring and analyzing sewer network siltation according to claim 1, characterized in that: Before the monitoring of the vertical exchange flow data from the surface two-dimensional model to the underground one-dimensional pipe network model, the method further includes executing: Import the one-dimensional urban pipe network model and the two-dimensional surface model respectively; The grid divides the two-dimensional surface model into a plurality of surface cells; A flow exchange formula is set between adjacent surface cells, and the parameters of the flow exchange formula are set according to the slope differences between the surface cells.

3. A method for monitoring and analyzing siltation in a drainage network according to claim 2, characterized in that: The grid divides the two-dimensional surface model into a plurality of surface cells, and further includes: The vertical projection of the surface cells corresponds to the nodes and pipe segments of the underground pipe network. The pipe segment attribute data and node attribute data are read and processed in batches, and the network relationship between the pipe segments and nodes is automatically established.

4. A method for monitoring and analyzing siltation in a drainage network according to claim 3, characterized in that: The grid division of the positions where the vertical exchange flow is lower than the average specifically includes: Calculate multiple means for each geographic level and mark the geographic locations below the mean at each level; The area marked with geographic location data is divided into grids of different scales according to the corresponding geographic level jurisdiction.

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