Research on Monitoring-Based Risk Management of Deep Excavation Engineering

According to the study on risk identification, risk estimation, risk assessment and risk control of monitoring-based deep excavation engineering, a set of feasible risk management system of deep excavation engineering is built up in this paper. The expert surveys method (including Delphi), fault tree analysis, checklist are used in identifying risk factors in deep excavation engineering. The risk estimation method of deep excavation engineering based on subjective estimation is proposed. This paper has established a monitoring-based risk assessment system on deep excavation engineering, including the standards of risk probability classification and risk loss level, the risk assessment matrix, the risk acceptance criteria and risk levels. The relationship between risk level and monitoring level is set up. The risk control method on risk tracking and risk early warning is put forward.