Data acquisition device and acquisition method for urban inland inundation drainage pipe network

Abstract

The invention discloses a data acquisition device and method for an urban inland inundation drainage pipe network. The data acquisition device comprises a GPS receiver, a mobile power supply, a Bluetooth transceiving device, a data receiving and transmitting device, a triangular bracket, an ultrasonic range finder, an adjustable telescopic rod and the like. Geographic position coordinates and ground elevation of pipe network ancillary facilities such as an inspection well are collected through the GPS receiver, the depth of the inspection well and the size of a drainage pipe network are collected through the ultrasonic range finder, and collected inspection well data are sent to the data receiving and transmitting device through the Bluetooth receiving and transmitting device. The data receiving and transmitting device transmits acquired inspection well data to the computer through a wireless network, and one-dimensional drainage pipe network topology information data is established through an ArcGIS platform. The drainage pipe network data can be rapidly and efficiently collected, the drainage pipe network model is established according to the collected drainage pipe network data, the drainage capacity of an existing pipe network can be effectively evaluated, the pipe network design is optimized, and the drainage efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of construction, and relates to a data acquisition device and method for an urban drainage pipe network. Background Art

[0002] With the rapid advancement of urbanization, urban waterlogging is becoming more and more frequent. In addition, the drainage pipe networks in most old urban areas of cities were built earlier. Due to the aging of pipes, unreasonable pipe network design and insufficient pipe network capacity, the old drainage pipe networks may not meet the needs of urban development and population growth, and urban waterlogging is serious. In order to provide a reference for the planning and design of urban drainage systems and facilitate urban management departments to understand the operation status of drainage pipe networks, drainage pipe network data is needed as a basis. In addition, in order to evaluate the drainage capacity of existing pipe networks, optimize pipe network design and improve drainage efficiency, drainage pipe network data is also needed to construct a one-dimensional urban drainage pipe network model to simulate the water exchange between pipe networks and surface water. However, the drainage pipe networks in most old urban areas of cities were built earlier. The location, size and connection relationship of the pipes were not fully recorded during the construction of the pipe networks. The data was not updated in time when the pipes were replaced, repaired or added later, and the unreasonable pipe network data storage method led to serious problems such as missing pipe network data, which seriously hindered the development of the above work.

[0003] At present, domestic drainage network data is mainly saved through CAD drawings. This traditional drainage network data storage method has problems such as data cannot be updated in real time, data consistency between different drawings is poor, the spatial topological relationship of the network is ignored and cannot be directly used for model analysis, and it cannot be edited by multiple people. Generally, if you want to analyze the drainage network model, you need to first extract the "node" and "pipeline" data of the network from CAD, and then import the collected node and pipeline data into ArcGIS to create SHP format files of "point features" and "line features". Finally, the spatial topological relationship of the network is constructed and the drainage network data is saved in the GDB database before it can be used for model analysis. However, this method of saving the collected drainage network data in CAD drawings, importing it into the ArcGIS platform, and then importing it into the drainage network model has problems such as data loss and difficulty in creating network topological relationships. Summary of the invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a device and method for collecting drainage pipe network data. The device mainly obtains the coordinate data and ground elevation of the inspection well through GPS positioning, and then uses an ultrasonic rangefinder to measure the size of the drainage pipe and the depth of the inspection well. At the same time, the collected pipe network data is imported into the ArcGIS platform in real time, and a set of process operations of "pipe network data collection, topological relationship checking, error data correction and database establishment" is established, which can effectively improve the efficiency of data collection. The one-dimensional drainage pipe network topology data established by ArcGIS can also be directly imported into the one-dimensional drainage pipe network model, saving the time required for modeling the one-dimensional drainage pipe network model.

[0005] To achieve the above object, the present invention provides the following technical solutions.

[0006] The present invention discloses a data collection device for urban waterlogging drainage network, comprising a GPS receiver (1), a mobile power source (2), a Bluetooth receiving module (3), a data receiving and transmitting system (4), a tripod bracket (5), an ultrasonic rangefinder (6), and an adjustable telescopic rod (7).

[0007] The GPS receiver (1) and the ultrasonic rangefinder (6) are equipped with a Bluetooth receiving module (3). The GPS receiver (1) and the data receiving and transmitting system (4) are connected to a mobile power source (2). The GPS receiver (1), the data receiving and transmitting system (4) and the mobile power source (2) are all fixed to the upper end of a retractable triangular bracket (5). The ultrasonic rangefinder (6) is connected to the lower end of the triangular bracket (5) via an adjustable telescopic rod (7).

[0008] The GPS receiver (1) is used to collect the geographical coordinates and ground elevation of the inspection well and the ancillary facilities of the pipe network, the ultrasonic rangefinder (5) is used to collect the depth of the inspection well and the size of the drainage pipe network, and the collected inspection well data is sent to the data receiving and transmission system (4) through the Bluetooth receiving module (3); the data receiving and transmission system (4) transmits the collected inspection well data to the computer through the wireless network, and establishes one-dimensional drainage pipe network topology information data through the ArcGIS platform.

[0009] The method for collecting data of urban waterlogging drainage pipe network described in the present invention comprises the following steps.

[0010] S1, place the drainage network data acquisition device above the inspection well, and simultaneously start the GPS receiver, ultrasonic rangefinder and data receiving and transmission system. The drainage network data acquisition device collects the coordinates and ground elevation of each inspection well ( x, y, z 1 )、Inspection well depth( h ), pipe shape and pipe size and other information.

[0011] S2, the data receiving and transmission system obtains the coordinates and ground elevation of the acquisition device on the inspection well ( x, y, z 1) and inspection well depth ( h ) and use the wireless network to receive the coordinates of the inspection well and the ground elevation ( x, y, z 1) and inspection well depth ( h ) is transmitted to the computer and based on the coordinates of the inspection well and the ground elevation ( x, y, z 1) and inspection well depth ( h ) Calculate the bottom elevation of the inspection well ( z 2), where the calculation formula for the bottom hole elevation is as shown in formula (1); z 2= z 1- h (1) in: z 2. z 1, h They are the ground elevation of the inspection well, the bottom elevation of the inspection well and the depth of the inspection well respectively.

[0012] S3, the drainage network data acquisition device imports the collected data of each network node into the ArcGIS platform, and adds node attributes to each network node. The node attributes include node number, node coordinates, ground elevation and well bottom elevation.

[0013] S4, establish one-dimensional drainage network topology information data, based on the ArcGIS platform and the network node data collected by the drainage network data acquisition device, add pipes between two adjacent nodes, and add pipe attributes to each pipe, the pipe attributes include pipe serial number, pipe type, pipe shape, pipe size, pipe starting point number and elevation, and pipe end point number and elevation.

[0014] S5, verify whether the one-dimensional drainage network topology information data is correct. Use the rationality check tool of the drainage network model to check the rationality of the one-dimensional drainage network topology information data. First, check whether the network data is missing or repeated, identify whether the node and pipeline attributes are missing, and whether the node and pipeline numbers are repeated; second, check whether the network topology information data is correct, identify whether the pipeline flow direction between two adjacent nodes is correct, and whether the pipeline starting and ending point numbers are incorrect; third, check whether the node and pipeline data conflict, and whether the elevations of the starting and ending points of the pipeline are lower than the bottom elevation of the well.

[0015] S6, correct the error data reported during the rationality check of the one-dimensional drainage network topology information data, and correct the nodes and pipelines with problems in the rationality verification one by one. First, for nodes and pipelines with missing attributes, they need to be re-measured, and after confirming that the data is correct, the node and pipeline attributes are updated on the ArcGIS platform; duplicate nodes and pipelines need to be deleted, and the nodes and pipelines with duplicate numbers need to be changed; second, for incorrect pipeline topology information data, the one-dimensional pipeline topology information data is reconstructed after correction; for incorrect pipeline flow directions, they are deleted according to actual conditions, or the pipelines are connected to the correct starting and ending points; third, for conflicting node and pipeline data, the node or pipeline data is corrected according to the actual pipeline network connection conditions to ensure that the elevation of the starting and ending points of the pipeline cannot be lower than the bottom elevation of the starting and ending points.

[0016] S7, after correction, the drainage network topology information data that has passed the rationality check is saved in the ArcGIS platform database.

[0017] In S3 and S4, the pipeline network is created on the ArcGIS platform according to the pipeline network node and pipeline data collected in S1 and S2. The point integration line function of ArcGIS is used to automatically create pipelines between every two adjacent nodes, and a pipeline attribute table is created based on the collected data (including pipeline sequence number, pipeline type, pipeline shape, pipeline size, pipeline starting point number and elevation, and pipeline ending point number and elevation). Based on the created nodes and pipelines, a one-dimensional drainage network topology information data can be preliminarily established.

[0018] The node and network data created in S5 are complex and large in volume. In order to improve the efficiency of drainage network topology verification, the rationality check tool of the drainage network model is used to verify whether the network topology is correct. Common topology relationship errors are mainly nodes that are independent or not connected to the corresponding pipes, pipes that are independent but not connected to the corresponding nodes, the elevation of the starting point or the end point of the pipe is lower than the elevation of the nodes at both ends, resulting in node and pipe data conflicts, pipe flow errors with negative slopes or node connection errors. The above error problems need to be corrected in S6 according to the actual drainage network connection conditions.

[0019] The present invention skips the method of storing drainage network data in CAD drawings and directly stores the collected "node" and "pipeline" data in SHP format in the GDB database of the ArcGIS platform. This data storage method can provide a unified database platform to store and update multi-dimensional information related to the network. Based on the powerful spatial analysis and visualization capabilities of the ArcGIS platform, it can clearly display the spatial layout of the drainage network and attribute information in consistent data format, display the structure, flow direction and potential defects of the network through an intuitive graphical interface, and can be directly imported into mainstream drainage network models such as SWMM, MIKE URBAN, Info Works and Guiren modeling tools without obstacles.

[0020] In addition, ArcGIS platform can realize data sharing by creating SDE spatial database. As long as multiple sub-computers are connected to the same local area network, an enterprise-level geographic database is created in the ArcGIS toolbox. After multiple sub-computers are connected to the enterprise-level geographic database, multiple devices can collect drainage network data at the same time, and the "node" and "pipeline" data saved as SHP format files can be edited at the same time, which greatly improves the efficiency of data collection and data creation. Among them, the "node" layer needs to create MUID, X, Y, Ground_Level, Invert_Level and Diameter fields, which correspond to the node number, X coordinate, Y coordinate, ground elevation, well bottom elevation and inspection well diameter respectively; the "pipe network" layer needs to create ID, From_node_id, To_node_id, Up_level, Down_level and Diameter fields, which correspond to the pipeline number, starting point number, end point number, upstream bottom elevation, downstream bottom elevation and pipe diameter respectively.

[0021] After collecting multiple node and pipeline data, create nodes in ArcGIS and add attributes such as node number, X coordinate, Y coordinate, ground elevation, well bottom elevation and inspection well diameter. After adding adjacent node data, create pipelines and add pipeline numbers, starting point numbers, end point numbers, upstream bottom elevation, downstream bottom elevation and pipe diameter. Determine the starting point number and end point number of the pipeline by comparing the bottom elevations of adjacent nodes or the actual flow direction of the pipeline. Then use the spatial connection tool in the toolbox in ArcGIS to directly connect the starting point and end point numbers of the pipeline to the corresponding node numbers, and then directly calculate the corresponding well bottom elevation through the field calculator.

[0022] Beneficial effects: The present invention provides a drainage network data acquisition device and a collection method. The network data acquisition device includes a GPS receiver, a mobile power supply, a Bluetooth receiving module, a data receiving and transmission system, a tripod bracket, an ultrasonic rangefinder, and an adjustable telescopic rod. Compared with the prior art, the present invention has the following advantages.

[0023] (1) The present invention has a high degree of structural integration and a simple and convenient data collection operation method, and can collect the required data at one time, which is convenient for carrying and data collection.

[0024] (2) The present invention can realize the drawing of a one-dimensional drainage network plan on the ArcGIS platform while collecting data, and can find incorrect network nodes and pipelines while collecting network data, thereby improving the efficiency of network data collection and ensuring the accuracy of the collected network data.

[0025] (3) The present invention uses a rationality check tool in the drainage network model to verify the one-dimensional drainage network topology information data. Compared with manual verification of the accuracy of the network topology information data, this method has the advantages of fast speed and high accuracy.

[0026] (4) The present invention uses ArcGIS to establish a drainage network topology information database, which can directly import the network information in the database into one-dimensional drainage network models such as MIKE URBAN, greatly improving the modeling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural diagram of the drainage network data acquisition device. In the figure, the markings are: 1-GPS receiver, 2-mobile power supply, 3-Bluetooth receiving module, 4-data receiving and transmission system, 5-triangular bracket, 6-ultrasonic rangefinder, 7-adjustable telescopic rod.

[0028] Figure 2 This is a schematic diagram of the steps and methods for using the drainage network data acquisition device.

[0029] Figure 3 This is the flow chart of drainage network data processing.

[0030] Figure 4 This is the drainage network data detection map of Huangnitou area in Jingdezhen City.

[0031] Figure 5 This is the spatial distribution map of the drainage network in Huangnitou area of ​​Jingdezhen City. DETAILED DESCRIPTION

[0032] The present invention will be further described through the following embodiments with reference to the accompanying drawings.

[0033] like Figure 1 As shown, the drainage network data collection device described in this embodiment includes a GPS receiver 1, a mobile power supply 2, a Bluetooth receiving module 3, a data receiving and transmission system 4, a tripod bracket 5, an ultrasonic rangefinder 6, and an adjustable telescopic rod 7.

[0034] The GPS receiver 1 and the ultrasonic rangefinder 6 have built-in Bluetooth receiving modules 3, the GPS receiver 1 and the data receiving and transmitting system 4 are connected to the mobile power supply 2, and the GPS receiver 1, the data receiving and transmitting system 4 and the mobile power supply 2 are all fixed on the upper end of the retractable triangular bracket 5, and the ultrasonic rangefinder 6 is connected to the lower end of the triangular bracket 5 through an adjustable telescopic rod 7.

[0035] The GPS receiver 1 is used to collect the geographical coordinates and ground elevation data of the inspection well and other ancillary facilities of the pipe network, the ultrasonic rangefinder 6 is used to collect the depth of the inspection well and the size of the drainage pipe network, the data receiving and transmission system 4 is used to receive and transmit the collected data, and the mobile computer is used to store the drainage pipe network topology data. The above-mentioned GPS receiver 1 and ultrasonic rangefinder 6 are both built-in with a Bluetooth receiving module 3. After collecting the coordinates, ground elevation, inspection well depth and pipe network size data, the Bluetooth receiving module 3 transmits the data to the data receiving and transmission system 4. The data receiving and transmission system 4 uploads the collected drainage pipe network data to the mobile computer through the wireless network, and realizes the one-dimensional drainage pipe network data collection and pipe network plan drawing at the same time through the ArcGIS platform.

[0036] The pipe network data collection method based on the system described in this embodiment includes the following steps.

[0037] S1, place the drainage network data acquisition device above the inspection well, and simultaneously start the GPS receiver, ultrasonic rangefinder and data receiving and transmission system. The drainage network data acquisition device collects the coordinates and ground elevation of each inspection well ( x, y, z 1 )、Inspection well depth( h ), pipe shape and pipe size and other information.

[0038] S2, the data receiving and transmission system obtains the coordinates and ground elevation of the acquisition device on the inspection well ( x, y, z 1) and inspection well depth ( h ) and use the wireless network to receive the coordinates of the inspection well and the ground elevation ( x, y, z 1) and inspection well depth ( h ) is transmitted to the computer and based on the coordinates of the inspection well and the ground elevation ( x, y, z 1) and inspection well depth ( h ) Calculate the bottom elevation of the inspection well ( z 2), where the calculation formula for the bottom hole elevation is as shown in formula (1); z 2= z 1- h (1) in: z 2. z 1, hThey are the ground elevation of the inspection well, the bottom elevation of the inspection well and the depth of the inspection well respectively.

[0039] S3, the drainage network data acquisition device imports the collected data of each network node into the ArcGIS platform, and adds node attributes to each network node. The node attributes include node number, node coordinates, ground elevation and well bottom elevation.

[0040] A pipe network is created on the ArcGIS platform according to the pipe network node and pipe data collected in steps S1 and S2. The point integration line function of ArcGIS is used to automatically create a pipe line between every two adjacent nodes, and a pipe attribute table (including pipe serial number, pipe type, pipe shape, pipe size, pipe starting point number and elevation, and pipe ending point number and elevation) is created according to the collected data. One-dimensional drainage pipe network topology information data can be preliminarily established based on the created nodes and pipes.

[0041] S4, establish one-dimensional drainage network topology information data, based on the ArcGIS platform and the network node data collected by the drainage network data acquisition device, add pipes between two adjacent nodes, and add pipe attributes to each pipe, the pipe attributes include pipe serial number, pipe type, pipe shape, pipe size, pipe starting point number and elevation, and pipe end point number and elevation.

[0042] S5, verify whether the one-dimensional drainage network topology information data is correct. Use the rationality check tool of the drainage network model to check the rationality of the one-dimensional drainage network topology information data. First, check whether the network data is missing or repeated, identify whether the node and pipeline attributes are missing, and whether the node and pipeline numbers are repeated; second, check whether the network topology information data is correct, identify whether the pipeline flow direction between two adjacent nodes is correct, and whether the pipeline starting and ending point numbers are incorrect; third, check whether the node and pipeline data conflict, and whether the elevations of the starting and ending points of the pipeline are lower than the bottom elevation of the well.

[0043] Since the created nodes and pipe network data are complicated and large in volume, in order to improve the efficiency of drainage pipe network topology verification, the rationality check tool of the drainage pipe network model is used to verify whether the pipe network topology is correct. Common topology relationship errors are mainly nodes that are independent or not connected to the corresponding pipes, pipes that are independent but not connected to the corresponding nodes, the elevation of the starting point or the end point of the pipe is lower than the elevation of the nodes at both ends, resulting in node and pipe data conflicts, pipe flow errors with negative slopes or node connection errors. The above error problems need to be corrected in S6 according to the actual drainage pipe network connection conditions.

[0044] S6, correct the error data reported during the rationality check of the one-dimensional drainage network topology information data, and correct the nodes and pipelines with problems in the rationality verification one by one. First, for nodes and pipelines with missing attributes, they need to be re-measured, and after confirming that the data is correct, the node and pipeline attributes are updated on the ArcGIS platform; duplicate nodes and pipelines need to be deleted, and the nodes and pipelines with duplicate numbers need to be changed; second, for incorrect pipeline topology information data, the one-dimensional pipeline topology information data is reconstructed after correction; for incorrect pipeline flow directions, they are deleted according to actual conditions, or the pipelines are connected to the correct starting and ending points; third, for conflicting node and pipeline data, the node or pipeline data is corrected according to the actual pipeline network connection conditions to ensure that the elevation of the starting and ending points of the pipeline cannot be lower than the bottom elevation of the starting and ending points.

[0045] S7, after correction, the drainage network topology information data that has passed the rationality check is saved in the ArcGIS platform database.

[0046] Starting point End point Example Select the Huangnitou area of ​​Jingdezhen City, use the drainage network data acquisition device to collect local drainage network data, and after the drainage network topology data is processed correctly (the data processing process is as follows Figure 3 As shown in the figure, a one-dimensional drainage network topology information database was established on the ArcGIS platform.

[0047] The drainage network in Huangnitou District, Jingdezhen City was built earlier, so the drainage network data is missing. With the rapid population growth and the aging of the drainage network, the local drainage network can no longer meet the demand for drainage. Therefore, in order to understand the operation status of the drainage network, it is urgent to collect drainage network data. According to the drainage network data collection device, the drainage network data detection map of Huangnitou District, Jingdezhen City is collected, as shown in the figure below: Figure 4 As shown in the figure, a total of 349 inspection well node data were collected, and a total of 348 pipe segments were collected based on the inspection well node data. The total length of the pipe segments was calculated to be 8185.92 m using the calculation geometric length function in ArcGIS. Combining satellite images and GPS positioning of drainage network data collection devices, a spatial distribution map of the drainage network in Huangnitou area of ​​Jingdezhen City was generated, as shown in the figure below. Figure 5 shown.

Claims

1. A data collection device for urban waterlogging drainage network, characterized in that It comprises a GPS receiver (1), a mobile power source (2), a Bluetooth receiving module (3), a data receiving and transmitting system (4), a tripod bracket (5), an ultrasonic rangefinder (6), and an adjustable telescopic rod (7); The GPS receiver (1) and the ultrasonic rangefinder (6) are equipped with a Bluetooth receiving module (3), the GPS receiver (1) and the data receiving and transmitting system (4) are connected to a mobile power source (2), and the GPS receiver (1), the data receiving and transmitting system (4) and the mobile power source (2) are all fixed to the upper end of a retractable triangular bracket (5), and the ultrasonic rangefinder (6) is connected to the lower end of the triangular bracket (5) via an adjustable telescopic rod (7); The GPS receiver (1) is used to collect the geographical coordinates and ground elevation of the inspection well and the ancillary facilities of the pipe network, the ultrasonic rangefinder (5) is used to collect the depth of the inspection well and the size of the drainage pipe network, and the collected inspection well data is sent to the data receiving and transmission system (4) through the Bluetooth receiving module (3); the data receiving and transmission system (4) transmits the collected inspection well data to the computer through the wireless network, and establishes one-dimensional drainage pipe network topology information data through the ArcGIS platform.

2. The method for collecting data by a data collection device for urban waterlogging drainage network as claimed in claim 1, characterized in that Here are the steps: S1, place the drainage network data acquisition device above the inspection well, and simultaneously start the GPS receiver, ultrasonic rangefinder and data receiving and transmission system. The drainage network data acquisition device collects the coordinates and ground elevation of each inspection well. x, y, z 1 , Inspection well depth h , pipe shape and pipe size and other information; S2, the data receiving and transmission system obtains the coordinates and ground elevation of the acquisition device on the inspection well x, y, z 1 and inspection well depth h , and use the wireless network to receive the coordinates of the inspection well and the ground elevation x, y, z 1 and inspection well depth h Transmitted to the computer, and based on the coordinates of the inspection well and the ground elevation x, y, z 1 and inspection well depth h Calculate the bottom elevation of the inspection well z 2, where the calculation formula for the bottom hole elevation is as shown in formula (1); z 2= z 1- h (1) in: z 2. z 1, h They are the ground elevation of the inspection well, the bottom elevation of the inspection well and the depth of the inspection well; S3, the drainage network data collection device imports the collected data of each network node into the ArcGIS platform, and adds node attributes to each network node, wherein the node attributes include node number, node coordinates, ground elevation and well bottom elevation; S4, establishing one-dimensional drainage network topology information data, based on the ArcGIS platform and the network node data collected by the drainage network data collection device, adding a pipe between two adjacent nodes, and adding pipe attributes to each pipe, wherein the pipe attributes include pipe serial number, pipe type, pipe shape, pipe size, pipe starting point number and elevation, and pipe ending point number and elevation; S5, verify whether the one-dimensional drainage network topology information data is correct. Use the rationality check tool of the drainage network model to check the rationality of the one-dimensional drainage network topology information data. First, check whether the network data is missing or repeated, identify whether the node and pipeline attributes are missing, and whether the node and pipeline numbers are repeated; second, check whether the network topology information data is correct, identify whether the pipeline flow direction between two adjacent nodes is correct, and whether the pipeline starting point and end point numbers are incorrect; third, check whether the node and pipeline data conflict, and whether the elevation of the pipeline starting point and end point is lower than the bottom elevation; S6, correct the error data reported during the rationality check of the one-dimensional drainage network topology information data, and correct the nodes and pipelines with problems in the rationality verification one by one. First, for nodes and pipelines with missing attributes, they need to be re-measured, and after confirming that the data is correct, the node and pipeline attributes are updated on the ArcGIS platform; duplicate nodes and pipelines need to be deleted, and the nodes and pipelines with duplicate numbers need to be changed; second, for incorrect pipeline topology information data, correct it and rebuild the one-dimensional pipeline topology information data; for incorrect pipeline flow direction, delete it according to actual conditions, or connect the pipeline to the correct starting point and end point; third, for conflicting node and pipeline data, correct the node or pipeline data according to the actual pipeline network connection conditions to ensure that the elevation of the starting point and end point of the pipeline cannot be lower than the bottom elevation of the starting point and end point; S7, after correction, the drainage network topology information data that has passed the rationality check is saved in the ArcGIS platform database.

3. The method for collecting data by using a data collection device for urban waterlogging drainage network according to claim 2, characterized in that: The pipeline network is created on the ArcGIS platform according to the pipeline node and pipeline data collected in S1 and S2. The point integration line function of ArcGIS is used to automatically create pipelines between every two adjacent nodes, and a pipeline attribute table is created based on the collected data, including pipeline sequence number, pipeline type, pipeline shape, pipeline size, pipeline starting point number and elevation, and pipeline ending point number and elevation. The one-dimensional drainage pipeline network topology information data is preliminarily established based on the created nodes and pipelines.

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