Study On Safety Risk Management Of Highway Tunnel Construction In Mountain Ridge

The development of transportation industry encounters the construction of mountain highway tunnel inevitably,and its safe construction is one of the key problems to ensure the smooth construction of mountain tunnel.In order to discuss the safety risk management of mountain road tunnel construction project,the Delphi method is used to analyze the construction safety risk factor collection of mountain road tunnel and its index system,and establish the safety risk assessment model further.Based on the proposed method,the safety risk is identified based on the proposed research method concluding the cloud model,the entropy weight method and the Pearson correlation analysis method,and the management strategy is put forward.And the principal results are as follows:(1)The establishment of safety risk index system for the construction of mountain highway tunnel.By analyzing the necessity of safety risk management in the construction of mountain road tunnel,this paper discusses a variety of safety risk analysis methods,analyzes the safety risk factor set and its index of mountain highway tunnel construction by Delphi method,and the index system is established.After obtaining the relevant data of Y tunnel,the suitability of the index system is verified by the method of reliability analysis and correlation analysis.(2)The building of cloud model for mountain road tunnel construction safety risk analysis.Based on the theory of cloud and cloud model,the applicability of cloud theory in research objectives is discussed,and after setting up and modeling fuzzy comment by cloud theory,the cloud model of mountainous tunnel construction safety risk assessment is established.(3)The practical application of the cloud model of construction safety risk of mountainous highway tunnel.Combined with the established index system and the indicator data of Y tunnel,the built risk assessment model has been applied practically.The results show that,on the whole,the safety risk of Y tunnel construction is "low risk",and the corresponding safety risk level of every dimension index and sub-dimension index is also recognized.That is the applicability of the cloud model in this field is verified by an example.(4)The putting forward of the management strategy of construction safety risk for Y tunnel.According to the evaluation results,the paper analyzes the construction safety risk management strategy of Y tunnel from the five perspectives of construction workers,equipment materials,construction environment,construction management and construction materials.In this paper,the Delphi method is used to obtain the set of risk factors,the cloud theory is utilized to evaluate the safety risk of tunnel construction,and a kind of evaluation method and management method which is in line with human thinking logic for tunnel construction safety risk management is put forward.The research contents and methods in this paper have a high significance for ensuring the safety of employees and equipment in tunnel construction and the smooth development of construction process.