Study On Human Risk Factors And Intervention Strategy Of High Falling Accidents

Construction industry is an important pillar industry of current economic development,and it is also a major export industry of "The Belt and Road" initiative in China.However,the overall safety production situation of construction in China is not optimistic.Among them,the falling accidents which is the head of the “five major injuries” in project construction is the most prominent,and the accidents are frequent and the losses are serious.Human factor is an important part of the cause of accidents.According to statistics,about more than 80% of the total number of construction safety accidents is caused because of human factors.Therefore,it is of great significance to carry out the research on human factors risk identification and intervention strategies for high altitude crashes to prevent and reduce the occurrence of high altitude crash accidents and improve the safety production level of engineering construction.This article takes the hydropower project construction as the research background,takes the high altitude crash accident as the research object,and determines the human risk intervention strategy as the research goal.HFACS is selected as the human factor risk identification method to identify the human risk of a high altitude accident and construct a human risk structural equation model for high altitude crash accidents.The role of risk factors is explored for each person,and a human risk intervention strategy is proposed based on system simulation.As a result,key intervention strategies are identified.Details are as follows:Firstly,analyze the human risk factors of high altitude accidents,and analyze the human factors risk classification factors based on the human factors analysis and classification system.From the organizational impact,safety supervision,preconditions for unsafe behavior and unsafe behavior,etc.At the four levels,the human factors risk factors for 15 high-fall accidents such as operational violations,skill errors,and emergency rescues were identified,and the meaning of each element was defined.Secondly,considering the applicability of the structural equation model,using organizational influence,safety supervision,preconditions for unsafe behavior,unsafe behavior,etc.as potential variables,and using 15 individuals as observation variables for risk factors,a high-risk accident human risk structure was constructed.Equation model;design questionnaires,obtain basic research data of each element;use AMOS 24.0software to solve the model and hypothesis verification,reveal the path of influence between factors.The results show that there are high correlations among the four latent variables,and the observed variables with higher path coefficients at each level are:resource allocation and management,supervision violation,poor management of the team and operation violation.Finally,the paper proposes the human risk intervention strategy for high altitude crash accidents and builds a dynamic risk model of human risk combination intervention system for high altitude crash accidents.Using Vensim software for simulation,the results show that the combination of four strategies to improve the allocation and management of organizational resources,strengthen education and training,improve the management of the team and control the error behavior of construction workers can significantly reduce the unsafe behavior level of high-fall accidents.