REVIEW ON RISK ASSESSMENT METHODS FOR TUNNELLING AND UNDERGROUND PROJECTS

The risk assessment is the core of risk management for the tunnel and underground projects,an important joint between risk identification and risk management and also a foundation of decision analysis.This paper presents a review onthe basic concept of risk assessment on the tunnel and underground projects,the present situation and the development of risk assessment methods as well as the recently most commonly used methods.The paper further discusses the problems to be solved and the future development needs on the risk assessment methods.