DFS-Based Partition Method of Coalmine Ventilation Safety SubRegion

Abstract

According to functional characteristics of different regions of the ventilation network, the complicated ventilation network can be further divided into non-overlapping and exhaustive safety subregions, which can provide scientific basis on classification guidance for ventilation analysis in a concise point of view. Therefore, it is of great application significance. Specifically, a method is proposed to divide safety subregions of the ventilation network. Then, six different safety subregions are defined, and they are air-inlet subregion, air-outlet subregion, air-consuming subregion, upstream of air-consuming subregion, downstream of air-consuming subregion and bypass subregion. After that, with an air-consuming spot (working face and heading face) as the center, depth-first search (DFS) algorithm is adopted to perform traversal analysis on coalmine ventilation network. Besides, ventilation network partition is achieved in combination with safety subregion partition algorithm. The method proposed here can be used for coalmine safety production analysis and management. Finally, Huangling coalmine is taken as an example to verify the correctness and feasibility of the method proposed.