Use of ventilation network calculations

Ventilation network calculation Before the network calculation, the system also prompts the user to input the network calculation parameters: wind resistance variation coefficient, fan database selection (user fan library, WZ series, FS series, KX series), etc., because the roadway resistance coefficient is not accurately calculated. Formula, the resistance coefficient of the roadway selected by the user is mostly of empirical nature. Therefore, the system allows the user to use the coefficient of wind resistance variation to fully enlarge or reduce the resistance coefficient of the roadway and then perform network calculation. When the coefficient of variation is greater than 1, it is amplified. Zoom out; the fan database selection switch (T-check, F-not selected) allows the user to select a series of fans to participate in the network calculation, the user fan library is the fan library built by the user, and the WZ, FS, KX series fan library is provided for the system. Energy-saving fan library commonly used in domestic mines.

Calculation steps: network generation → cell circle setting → network initial calculation → working condition adjustment → fan optimization → network solution → result. Adjustment calculation: If the user is not satisfied with the calculation result (fan model, fan working condition, lane separation, etc.), the system allows the user to adjust and recalculate. If there is no data or calculation error, the system automatically completes the functions of steps 1 to 7, and the system uses the default method to generate the virtual working condition value of the fan. 4 ventilation drawing to generate a stereo view. After the user enters the node coordinates and the lane associated data, the ventilation system stereogram can be generated. Before the stereogram is generated, the system prompts whether to change the stereogram drawing parameters. When the stereogram is generated for the first time, the drawing parameters should be given, and the drawing file name is checked correctly. In addition to generating the ventilation system stereo view, the system can also generate the ventilation composite plan and the middle plan. Before the plan is generated, the system prompts whether to change the plan drawing parameters. When first generating the floor plan, the drawing parameters should also be given, and check whether the drawing file name is correct (default file) Named the current mine code).

Users can use this function to check if the original data (node ​​coordinates, associated points) is correct. Plane drawing parameters: As with generating a stereogram, the drawing parameters are also required before generating the plan. The main ones are: frame, scale, relative coordinate drawing switch (T-true, F-false), relative coordinate ratio (m/d), Reference point absolute coordinates, drawing file name, legend labeling position, number and location of exploration lines, etc. Mid-section selection of the plan: In addition to the given drawing parameters, the middle section of the drawing is also specified, and the middle section of the drawing is entered in the data entry window of the “floor plan”. When the middle section of the plan is 0, the composite plan is drawn (excluding the “cut middle section”), given the plan In the middle section, the plan of the middle section is generated, and the "cut off middle section" is invalid. The generated stereo view or plan view is displayed in the window, but the edit cannot be edited. If you want to edit and modify, the user can read the generated SCR file in AutoCAD with the command SCRIPT.

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