Instructions for use

Pipe burst analysis is a 3D network analysis function that simulates the phenomenon of pipeline damage or failure exposure. It can be used to find the nearest valve position upstream or downstream of the burst point. According to the pipeline flow direction, it quickly locates the nearest and minimum number of valves that need to be closed upstream. After closing these valves, the burst pipe segment and its upstream are no longer connected, preventing water outflow, thus mitigating disasters and resource waste.

After creating a pipe burst analysis instance, underground mode is automatically enabled. The burst pipe water spray effect requires adjusting the view underground to be visible. When creating pipe burst analysis, it is necessary to import the symbol library for constructing 3D pipeline model data.

Function Entry

• Spatial Analysis tab->Facility Network Analysis group->Network Analysis drop-down button->Pipe Burst Analysis button

Operation Steps

1. Open the 3D network dataset for analysis in the scene.
2. Click the Spatial Analysis tab->Facility Network Analysis group->Network Analysis drop-down button->Pipe Burst Analysis button. A prompt box appears: "This function needs importing the symbol library. Do you want to import the symbol library?" It is recommended to select Yes. After setup, if a prompt appears: The network dataset lacks the burst pipe model field. It is recommended to perform the "Build Pipeline Model" function in the "3D Environment Settings" at the bottom right, and click OK.
3. After setup, the 3D Instance Management and 3D Environment Settings panels pop up on the right side of the software window.
4. In the 3D Environment Settings window, you can set analysis parameters, such as weight field, node/edge ID field, etc., and build pipeline model.
5. Build pipeline model: Click the Build Pipeline Model button to open the "Build Pipeline Model" dialog. Based on the 3D network dataset parameters fields, you can construct relevant fields such as joint model, pipeline model, joint model rotate, and joint model scale, to match the joint node symbols and pipeline symbols in the symbol library.
   • Network Parameter: Select the network dataset and specify the property field in the network dataset as the node ID field, valve identification field, start node ID, and end node ID.
   • Model Symbol: Set the property field to store the model symbol number for interfaces and pipelines. You can directly enter a new property field name to create a new field in the 3D network dataset for storing symbol numbers, or select an existing field.
   • Interface Rotate Model: Select the property field in the 3D network dataset to set the angle for rotating the interface model clockwise around the X/Y/Z axis with the model center point as the rotation center.
   • Interface Model Scale: Select the property field in the 3D network dataset to set the scaling ratio for the interface model along the X/Y/Z axis.
   • After setup, click the OK button to create two custom thematic maps and display them in the current scene.
6. Creating a pipe burst analysis instance will automatically Enable Underground Mode, with a default transparency of 50%. In the 3D Instance Management window, you can set pipe burst analysis parameters, including burst point management, pipe burst settings, etc.
7. Burst point management: Add and modify burst points in the current 3D network data layer, etc.
   • Add by Mouse: Click the Add by Mouse button in the toolbar of the 3D Instance Manager panel, then move the mouse to the scene and left-click to add a burst point. After adding, the water spray effect for pipeline burst appears at the specified location. The burst point is displayed in real-time under the burst point directory. Right-click to end adding.
   • Pipe burst analysis can only analyze one burst point at a time.
   • The context menu for a specific burst point provides remove, rename, and export options.
     • Remove: Remove the burst point from the scene and burst point directory.
     • Rename: Rename the burst point.
     • Export: Export the burst point as a 3D point dataset.
8. Pipe burst settings: Click the Parameters button in the toolbar of the Instance Manager panel to open the Pipe Burst Settings dialog, where you can set pipe burst analysis parameters.
   • Analysis Type: Used to set the type of pipe burst analysis. It supports four analysis types: Find Closest Valve, Find Critical Downstream Nodes, Find Downstream Facility for Burst Point, and Find Downstream Facility Closest to Valve.
     • Find Closest Valve: Find the nearest critical nodes upstream of the burst point.
     • Find Critical Downstream Nodes: Find the nearest critical nodes downstream of the burst point.
     • Find Downstream Facility for Burst Point: Find all arcs and nodes downstream of the burst point.
     • Find Downstream Facility Closest to Valve: Find the nearest upstream critical nodes and the affected downstream arcs and nodes.
       Tip:

       When "Find Critical Downstream Nodes" or "Find Downstream Facility Closest to Valve" is checked, "Find Closest Valve" is automatically checked, as these analysis types require simultaneously finding upstream critical nodes of the burst point.

   • Critical Nodes: From the 3D network point dataset, select the property field that identifies critical nodes and its corresponding field value. For example, setting Name=Valve means points with the value "Valve" in the property field Name are treated as critical nodes.
9. After parameters are set, click the Execute button in the toolbar to perform pipe burst analysis. After the execution is completed, the analysis results (affected pipelines, affected nodes) are displayed under the analyst result directory in the 3D Instance Management panel. Supports operations such as save as dataset, rename, and remove.
   • Save as Dataset: In the context menu of a specific analysis result, select Save as Dataset to open the Save as Dataset dialog. You can choose the data source to store the result data and set the resulting dataset name.