Combined with iServer 3D network analysis service upstream and downstream tracking, it can be used to find the upstream or downstream valve position of the burst point, and quickly find the closest and least number of valves in the upstream to be closed according to the pipeline flow direction indication. After these valves are closed, the burst pipe section is no longer communicated with its upstream, thus preventing the outflow of water, preventing the disaster from aggravating and wasting resources. The burst point can be located anywhere in the arc.

operating steps

1. Data preparation:

   1. Firstly, through iDesktop X desktop, the 2D point and line data sets representing pipe points and pipelines (road routes) are constructed into 3D pipe point and pipeline data according to height attribute, or 3D point and line data sets are possessed by themselves; then 3D network data sets are constructed by both of them (please refer to Supergraph iDesktop X products for specific network data sets), and 3D network models are constructed by making thematic maps and saved as scenes.

   2. publishing a 3D network analysis service from a workspace storing a 3D network dataset through iServer;

   3. At the same time, three-dimensional model data is prepared for UE display, and model tiles of arc segments and nodes of network data are obtained by generating scene tiles, and loaded into UE for display. Note that instantiation is not checked during tile generation.

2. Use analysis function
   1. Fill in the network address: fill in the address analyzed in the 3D network analysis service, such as querying the upstream node, such as:

      1. Upstream: http://localhost:8090/iser/services/networkAnalyst3D-x/rest/facilityanalyst3d/x/traceupresul

      2. Downstream: http://localhost:8090/iser/services/networkAnalyst3D-x/rest/facilityanalyst3d/x/tracedownresul

   2. Select ID: You can select arc ID or node ID, which represents that an object under this type of data has burst. Object ID can be filled in directly or by clicking on the object to obtain the ID for analysis.

      Note that by clicking, the water particle effect will be displayed when performing burst analysis, with gravity effect, because the current position needs to be set to the geographical origin in advance. Geographic origin can be set by coordinate query.

   3. Weight field: Smlength by default.

   4. Select layer: Select the corresponding arc segment, pipe point model tile layer, highlight the object used for analysis results.
   5. After clicking Analyze, the plug-in will send a request to upstream or downstream analysis. After returning the ID of the resulting object, the object will be highlighted in the scene.

1. See the figure below for the results of tube burst analysis