Study Of Coal Mine Gas Disaster Network Based On Link Prediction Theroy

Gas disaster is a devastating disaster in mine production system. mine production system is mainly composed of underground tunnel system, adding conditions of ventilation and this is a typical gas disaster network. The network of coal mine gas disaster is describing the coal mine gas disasters in a network way and it deepens the understanding of the law of the formation coal mine gas disaster.Based on a large amount of coal mine investigation report on gas accident and previous gas accident researches in this paper, the gas disaster network is constructed by system engineering method. The network of coal mine gas disaster is describing the coal mine gas disasters in a network way and it deepens the understanding of the law of the formation coal mine gas disaster.Through the network topology analysis of coal mine gas disaster network:(1)It shows the phenomenon of the degree's distribution is uneven, so the gas disaster network own a nature of non-degree.(2)It can be known from the density of the network: its overall compactness is relatively low and the structure is more dispersed.(3)Analysis of the centrality of the network: the important nodes of network have a great impact on the network,the internal links closely;Node similarity index shows that large degree nodes are more likely to have high similarity than other nodes; coal mine gas disaster network with BA scale free network has a high degree of similarity. The network of gas disaster in coal mine has a high similarity with the BA scale free network. The new join nodes in the network are more likely to be connected to the nodes with large degree in the law of limited connect. It also shows that high order path has a small influence on the whole network. any two nodes in the coal mine disaster network can go to the other side with a high possibility. and the commute time of two nodes is very short. The communications of local nodes in the coal mine gas disaster network are obvious.The preference connection nature of network is not changed and the connection tendency between the nodes still exists after deleting the important nodes 'sides. While highlighting the importance of direct connection, but also consider the overall impact of the node on the whole network. the importance of nodes in the network embodies in the weight of the node- side. The network is weighted by an example and the accuracy of prediction is improved obviously.