Method and device for solving mine ventilation network

Abstract

The invention provides a mine ventilation network resolving method and device. The method comprises the steps of simplifying a local wind network meeting a preset condition into a branch in an original ventilation network diagram based on a wind resistance value simplification method to obtain a first ventilation network diagram; based on the first ventilation network diagram, determining a minimum tree taking an exit well or an entrance well as a root node and remaining branches; and determining a calculation result of the original ventilation network diagram based on the depth of the residual branches and a correction algorithm. According to the mine ventilation network resolving method provided by the invention, a complex mine ventilation network diagram is simplified through a wind resistance value simplification method; and then, based on the simplified ventilation network diagram, a minimum tree and remaining branches are generated, and according to the depth of the remaining branches and a correction algorithm, a calculation result of each branch in the original ventilation network diagram is determined. According to the method, the resolving speed can be increased, and meanwhile, the resolving stability and the resolving efficiency can be improved by adopting a more reasonable iterative calculation initial value assigning mode.

Description

technical field [0001] The invention relates to the technical field of mine ventilation, in particular to a method and device for calculating a mine ventilation network. Background technique [0002] Mine ventilation system is an engineering system composed of ventilation network, ventilation power and ventilation control facilities that supply fresh air to various underground operating sites and discharge dirty air. It sends fresh air into the underground for the staff to breathe, dilutes and eliminates the toxic and harmful explosive gases gushed out during mining, etc. Therefore, it has an important impact on mine safety and production, and is the basic project of mines. The calculation of the mine ventilation network can provide reference for the design and modification of the mine ventilation system, and is the basic support of the mine ventilation system. [0003] At present, there are a variety of computer software systems for ventilation network calculation at home ...

AI Technical Summary

Problems solved by technology

This leads to a large number of iterations in the calculation process, and even the divergence of iterative calculations

In addition, the actual mine ventilation network system is complex, and there are various branch relationships such as series connection, parallel connection, and angular connection, which lead to many unknowns and a large number of equations when solving the ventilation network, which also makes the ventilation network solution process complex and requires iterative calculations. Difficult to converge

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