Research On Construction Safety Management Of Matan~Tumendun Section Of Lanzhou Metro Engineering Line 1

The development of the national economy,the progress of social civilization,and the improvement of people's living standards have accelerated the pace of urban development.How to make rational use of limited space to meet the needs of urban development has become more and more important today.In order to solve this problem,urban subway construction projects have emerged.Because the geological conditions,the surrounding environment and the degree of construction specifications have an impact on the subway engineering system,the subway engineering system is a relatively complex system,and the construction process is a dynamic process,whether it is the foundation pit construction of the subway station,or It is a subway construction,and the construction is difficult.There are many uncertain risk factors.Although people have already realized the dangers of risks,due to the lack of basic engineering data and insufficient experience of construction technicians,they cannot have a full understanding of security risks and an accurate assessment.The evaluation of the safety level of urban subway construction is the first step to achieve the safety management of urban subway construction.To accurately evaluate the safety level of subway construction,it is particularly important to establish an index system that reflects its safety level and establish a feasible evaluation method.This article focuses on the construction safety management of the Matan section ~Tumendun section of the Lanzhou Metro Line 1.First,according to the actual characteristics and construction standards of the subway project,a comprehensive and systematic construction of the Lanzhou Metro Line 1 Matan The construction safety evaluation index system of the Tumendun section,based on the background of the construction project of Matan to Tumendun section of Lanzhou Metro Line 1,the necessity of analyzing its safety level is put forward;combined with the research progress on safety evaluation of subway construction at home and abroad in recent years,and the research The geographical location,hydrogeological conditions and other factors of the urban subway are strictly selected for the main factors that affect the construction safety level of the Matan ~ Tumendun section of the Lanzhou Metro Line 1.and the combined weighting method is used to calculate the comprehensive weight of each influencing factor.Then,the analytic hierarchy process and the entropy weight coefficient method are used,respectively.Determine the subjective and objective weights of the factors that affect construction safety,and then use the minimum information entropy principle to calculate the comprehensive weights of the indicators to find the main and secondary factors that affect the construction safety of the project;Second,the relevant departments involved in the construction of the Matan ~ Tumendun section of the Lanzhou Metro Line 1 were adopted as the survey object.The questionnaire survey methodcollects the main factors affecting the safety level of the subway project and obtains relevant data sources.At the same time,the data is substituted into the established safety level evaluation model for data analysis,and the Lanzhou Metro Line 1 Matan ~ Tumendun area can be obtained.The overall construction safety level of the project.Finally,the segment construction project is constructed according to the model in this paper.As a result of the evaluation of the safety level,it is recommended to formulate practicable improvement measures and improve the safety management plan for the processes or engineering parts with major safety hazards as soon as possible to lay the foundation for ensuring the later stage construction safety and smooth completion of this section.