A GIS Based Unsteady Network Model and System Applications for Intelligent Mine Ventilation

Table 3

The algorithm for GIS Based Unsteady Network Model.

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Algorithm 1. Algorithm steps for GIS based unsteady network model

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Step 1: Establish the ventilation network graph, initialize the geospatial and attribute data for laneways and nodes.

Step 2: Generate the topological relation for the ventilation network graph and stored as point-line indexed structure and basic incidence matrix.

Step 3: Sort the laneway branches according to wind drag, and generate the minimum spanning tree based on Dijkstra shortest path algorithm.

Step 4: Search the cotree branches, generate the independent loop and loop matrix.

Step 5: Main iteration based on Runge-Kutta algorithm; see equations (7)–(11).

Step 6: Save the results as time series air volume for each laneway branch based on point-line indexed structure.

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