Research On Risk Assessment And Safety Management Of Highway Special Maintenance Project

As the special maintenance projects of highways are in constant growth, the safety problems during construction stage becomes more and more obvious and the safety emergency ratio is increasing in the project maintenance construction area every year, which influences badly the economic benefit and social effects.The dissertation is focused on decreasing the transportation accidents in the special maintenance work zones of highway and improving the transportation ability and the construction safety. Researching and analyzing the risk assessment and safety management about the highway special maintenance projects and other kinds of constructions and combining the site research, this research about the risk assessment and safety management of highway special maintenance project and the following are mainly included:Firstly, applying many kinds of accidence causes and effect theory, analyze the safety emergency cause and effect theory in the highway special maintenance construction process from several different angles; based on the danger source theory, identify the danger sources during the special maintenance project and then summarize Grade One and Grade Two main danger sources, based on which the five kinds of factors influencing the highway special maintenance construction safety are generalized.Secondly, combining the site watch of the special maintenance project and the export consultation, work out the safety risk assessment index system of the highway special maintenance project according to the building basic principles of risk assessment index system. Meanwhile, comparing with many kinds of safety risk assessment methods, select BP neural network to set up the safety risk assessment model of the highway special maintenance project, which is tested and analyzed to be proved being reliable and effective by the plenty of sample data from the special maintenance project of Luoyang—Sanmenxia—Lingbao section of Lianyungang—Khorgos highway.Thirdly, referring to Near-Miss management theory, set up the safety management system of the highway special maintenance project based on Near-Miss Theory, based on which it is disserted that Near-Miss safety management process is achieved in"Quartet Management"mode of special maintenance project. And as a result, the revised safety management mode of highway special maintenance project is formed.