Study On Classification And Monitoring And Early Warning Technology Of Hazardous Sources For Large.scale Hydropower Project Construction

Due tocomplex geological conditions,difficult constructionsafety technologies,long construction periods,labor.intensive construction processes,frequent high.altitude cross.operations oflarge.scale equipment,and vulnerabilities to natural disasters,high safety risks during constructionand accidents,construction safety receives more attention during the construction of large.scale hydropower projects.It is not difficult to find thatnumerous hazards sources existing and their dynamic changesin the construction process of large.scale hydropower projects are the main reasons for the frequent occurrence of large.scale hydropower project accidents.Therefore,it is of great significance to study how to take measures to effectively identify various types of hazards sources in the construction process of large.scale hydropower projects,strengthen targeted monitoring and control,effectively avoid some safety accidents,and ensure the smooth construction of the project.Firstly,this study identifies the hazard sources for the construction of large.scale hydropower projects and classifies them into three major categories,and then carries out the construction hazards sources monitoring and early warning research,finallyestablishes a hazard sources monitoring platform and is successfully applied in the large.scale hydropower project construction,well received by users.The main research contents are as follows:(1)Taking the system safety engineering as the theoretical basis and taking hazard sources as the pointcut,this paper studies the distribution characteristics of hazard sources in large.scale hydropower construction and discusses the basis,content and methods of the identification of hazard sources in large.scale hydropower construction.Meanwhile,it puts forward using hazards identification technology of data mining on historical accident information with association rules;Based on the study of energy theory and MORT analysis method,the identification method of hazard source is proposed.(2)In combination with the significant characteristics of the hazard source,the paper studies the early warning theory and the function of the early.warning system of the large hydropower project construction as well as the establishing principle,and putsforward the early warning system and process of hazard source.Meanwhile,as an important supplement to the warning system,the process and methods of feedback control and related technologies of emergency treatment are also studied.(3)According to the first kind of hazard warning system of "small sample,poor information" grey characteristics,the method of improving traditional grey model is proposed in three contexts: parametric function transformation,equal dimensional information introduction,and time.varying parameter modeling.Thus time.varying and equi.dimension grey model is established taking into full consideration data smoothness and new information.(4)Through the research on early.warning mechanism of secondary hazard source,making use of multi.indicator early warning model based on pair analysis theory,multi.indicator early warning method of hydropower project construction is put forward,and the difficulties and uncertainties of secondary hazard source on quantitative analysis are solved.The multi.index warning model and safety analysis method are proposed on the basis of the set pair analysis theory.(5)This paper studies the function and structure of the major hazard source monitoring platform of hydropower project construction and puts forward the method of modular development,moreover,develops the major hazard source monitoring platform of hydropower project construction with Delphi visual programming language on Windows platforms.