Routing For Hazardous Materials Transportation With Time-Varying

As long as the development of economy, the quantity of hazardous materials grow rapidly. Hazardous material is the material with specially physical, chemical and biological character. It is easy to release, inflame, blast and so on in the manufacturing, inventory and transportation. Those releaseing, inflammation, blast will threat the population, environment and property. Today, the logistics management, people sruvival environment and environment protection became the mian issues in the society. Decreasing the cost and improving safty are the two main factors in the hazardous materials transportation. Compared the general transportation, in the hazardous materials transportation, there are tow objecitves should be comsidered. Thus, it becomes a multi-objective transportation problem. Furthermore, the time will effect the cost and risk in the hazardous materials transportation. Thus, the problem became the hazardous materials transportation with time-varying. This problem has a strong society background and expansive application perspective. It can solove the resource shortage, transportaton congestion, protection of human being and zoology environment by the continuous development. Untill now, few research was maken in the risk measurement and routing planning for the hazardous materials transportation with time-varying. In this dissertation, the risk with time-vaying was measured and the routing problems with time-vaying were analyzed, which has important theoretical significance and practical application value.The main contents of this dissertation are as followed:In chapter 1, based on the summary of relative reference, we Fetrospected domestic and foreign researchers on the hazardous materials transportation in the risk measurement and routing planning and the multi-objective shortest path problem. Then, we pointed out the shortcommings in the research on this problem and found some potential areas of the research.In chapter 2, the fundational theory of the time-varying hazardous materials was discussed. It was divided into three parts. The first is the theory of the time-varying network. The differnece between the time-varying network and static network was discussed and the optimal condition to get the shortest path in time-varying was proved.