The Identification And Relationship Analysis Of Safety Risk Factors In Deep Foundation Pit Construction

In recent years,due to the rapid growth of the national economy,the continuous progress of urbanization,and the gradual expansion of the project scale,the domestic urban underground space has been developed and utilized,and has entered the stage of rapid growth.Many underground projects belong to deep foundation pit,such as basement and underground space.The key work of these projects is deep foundation pit construction management.As a comprehensive project,the construction environment of deep foundation pit is extremely complex,such as soft soil environment,which is very easy to cause safety accidents.It is common in soil sliding and slope instability,and even has an improper impact on the surrounding environmental facilities,which will slightly hinder the progress of the construction period,and seriously cause casualties.Therefore,it is an important part of deep foundation pit construction to effectively identify safety risks and take effective control measures.In the process of research,this paper mainly discusses how to effectively control the safety risk of deep foundation pit construction and reduce the occurrence rate of dangerous accidents,which is also an important problem to be solved at present.First of all,this paper focuses on the background,significance and purpose of this study,summarizes the research status of this field at home and abroad,and based on this,takes a series of research designs,and puts forward specific research methods and ideas.Then the basic concepts of deep foundation pit engineering and safety risk are described,and the relevant theories of safety risk management are introduced,which lays a solid theoretical foundation for the following research work.In the third part,the case of TK project is introduced.This paper expounds the concrete progress of the project and the current situation of construction risk,and emphatically analyzes the construction links of deep foundation pit engineering.At the same time,it introduces the current situation of safety risk management of deep foundation pit excavation,and puts forward the method of identifying risk factors,which is mainly divided into two steps:first,exploratory analysis,and second,confirmatory analysis.This paper analyzes the relationship between safety risk factors in the construction of deep foundation pit of TK project,in which the interpretative structural model of research preparation and safety risk factors is analyzed,and the final results are also discussed and analyzed.Based on the analysis of the direct,fundamental and intermediate factors of safety risk,this paper puts forward the effective control strategy and establishes a perfect safety risk prevention and control system.Finally,it summarizes the research items of this paper,puts forward the shortcomings of this study,and looks forward to the future work.In this paper,questionnaire survey and expert interview are used to summarize and sort out the relevant data and information,and identify the relevant risk factors;principal component analysis is used to sort out the various safety risk factors,and summarize the dimensions of safety risk;the method of interpretation structure model is used to analyze the hierarchical relationship between various safety risk factors In order to solve the risk problem effectively,the basic sources,direct causes and intermediate factors are summarized.The combination application of the above methods has certain research value in the field of safety risk prevention and control of the project.Through the research of risk identification and prevention and control of deep foundation pit,it will play a guiding role in practical operation and reduce the risk loss faced.