Study On Construction Safety Risk Management Of Civil Engineering Section 8 Of The Northern Extension Of Line 8 Of X Subway

Subway travel is becoming the main mode of travel for urban residents,and it also provides an important solution to solve urban traffic congestion.However,in recent years,many risk problems,such as underground risks and geological structure risks,cannot be avoided during the construction of new subways.These risks are not pre-judgmented and prevented,and it is easy to cause irreparable economic losses and casualties.Due to the high risk of engineering,technical difficulties,complex surrounding environment and geological conditions,some of the initially established urban rail transit construction units have relatively insufficient management experience,and the implementation of safety production responsibility system is not in place,and the safety management and construction of domestic urban rail transit projects.There is a big gap in speed,and there are many accidents in engineering safety production.Therefore,it is especially important to study the safety risks of subway construction.Based on the above background,this paper identifies and studies the safety risks of the Shi Jing station and the Shi Jing station-Ting Gang station section of the construction section of the 8th section of the north extension of the X subway line 8.According to the risk assessment and management work procedures of the metro project owner,the risk sources are discriminated and the main factors are found.By identifying and classifying,the construction safety risks during the subway construction period are divided into risk events and risk factors,and the risk factors lead to the occurrence of risk events.In this paper,the risk event is the first-level indicator,the risk factor is the second-level index,and the construction safety risk index system and the risk analysis level map are established.Then,the experts compare the importance of the risk events and factors,and use the analytic hierarchy process to measure the risk events.The risk factors are weighted,then the weighted sum of each risk factor is calculated,and the main risks are listed according to the probability of the probability of occurrence.After calculation,the main risks of Shi Jing station are: underground karst risk,address structure risk and soil risk;the risk main of Shi Jing station-Ting Gang station area is:underground karst risk,soil risk and geological structure risk.This paper analyzes and summarizes the main risks and other risks,and draws the risk management measures.For the main risks,the owner should attach great importance to it,and relevant departments and units should also strengthen the pre-judgment and strictly control the construction safety risks.Through the study of actual cases,this paper aims to strengthen the scientific and objective nature of risk identification in the subway construction process,and provide an effective method for risk identification for new subways,in order to reduce the economic loss of construction process,reduce costs and increase profits.Therefore,this article has some research value and significance both in theory and in practice.