RISK ANALYSIS OF TUNNEL SHIELD MACHINE DRIVING-IN AND DRIVING-OUT CONSTRUCTION PROCESS IN TUNNELLING ENGINEERING

Abstract

Based on Zhengzhou Metro M1 line project,the risk analysis method is presented in the paper,which evaluates risk level of working condition using expert investigation method and evaluates weights of the risk factors using analytical hierarchy process.Risk of tunneling machine driving-in and driving-out construction process is analyzed.Risk control measures are put forward based on the results of risk analysis.