Study on Path Optimization of Emergency Material Transportation with Interval Time

The existing literature on path optimization of emergency material transportation is either indefinite path optimization question of emergency material from the single emergency service point to the single emergency demand point or deterministic path optimization question from the single emergency service point to many emergency demand points. This paper aims to study enclosed path optimization question of indefinite regional time which various road sections spend from the single emergency service point to many emergency demand points, gives the operational method of interval number and the algorithm of the model, and carries on the checking calculation with the example.