Research On Optimization Of Road Transportation Path Of Dangerous Goods Based On GIS

In recent years,as China's economic development has accelerated,and dangerous goods are an important part of social development,its road traffic volume also increases every year,but road traffic accidents also occur frequently with the increase in traffic volume.Although we cannot predict the occurrence of dangerous goods transportation accidents,we can prepare in advance to reduce unnecessary risks.Research on the optimization of dangerous goods transportation routes is one of them.Therefore,this paper combines GIS to analyze and study the optimization of dangerous goods transportation routes.The main objectives of the study can be broken down into the following aspects:(1)Sort out the theoretical knowledge of dangerous goods,GIS,modern heuristic algorithms and the transportation risks,influencing factors and accident scope of dangerous goods during road transportation,such as road factors,population distribution,environmental climate and emergency evacuation capabilities.Based on the basic risk assessment,a risk assessment model considering population exposure was established,and a risk assessment model based on GIS was established.(2)Combined with the risk assessment model,a path optimization model for road transportation of dual-target dangerous goods considering population exposure was established.(3)Analyze the advantages and disadvantages of the basic ant colony algorithm.This paper optimizes the state transition probability of the ant colony algorithm,the updating method of pheromone,and the selection of parameters by combining dangerous goods road transportation.Through Matlab programming,the basic ant colony algorithm and the improved ant colony algorithm are used to solve the optimal route problem of road transportation of dangerous goods.The experimental results show that the improved ant colony algorithm has a certain optimization effect compared with the traditional ant colony algorithm.(4)This article uses ArcGIS components and VS 2010 as the development environment to develop the dangerous goods road transportation safety management system.The program code is simple to write but plays many powerful functions,such as:simple map operation,transportation information collection and storage,risk analysis,route optimization,etc.Verification test results show that the system can quickly optimize the transportation path of dangerous goods and distinguish between dangerous and safe areas.Finally,the article is briefly summarized,and the optimization of path optimization model,the combination of ant colony algorithm and other algorithms,system development and system verification test optimization are the main directions of this research.