The scheduling of relief supplies is an important link in earthquake relief work.How to transport earthquake relief supplies safely

economically

and quickly to the demanding areas is a key problem in scheduling the relief supplies.In this paper

the supply scheduling is considered from aspects of timeliness

safety

and economy.Under the transport capacity

a mathematical model for the earthquake relief supplies is established to minimize the time and the number of depots

and to maximize the safety.Firstly

the original problem constrained by the transport capacity is transformed into an optimizing one without constraints to solve the sets of feasible solutions.Secondly

the best solutions for each feasible set are solved by the fuzzy programming

and then the optimal solution

with the shortest time

the least number of the depots

and the highest safety

is selected by comparing the best solutions.Finally

how to use this method is demonstrated by a simulation example.