Study on Invulnerability of Material Emergency Transportation System Based on Three-Layer Interdependent Network

The material transportation capacity under emergency conditions is an important guarantee for the country to deal with war, epidemic outbreak, and other crisis situations. Under conditions, some nodes of system may fail work normally, which lead collapse whole system. Based on analyzing characteristics system, this article builds a three-layer interdependent network model uses improved M-L describe failure propagation mechanism node damage in network. Then, attacked randomly, relationship between invulnerability three main indexes flow, average degree, probability interdependence are studied. Afterwards, cascading among subnetworks analyzed compared. This provides theoretical basis building efficient robust