分析了我国高速铁路施工项目的风险特点和管理现状,指出风险管理中存在主要问题的基础上,对动态风险管理的概念做了界定,提出了动态风险管理流程模型。使风险在施工过程中始终处于可控状态,风险量处于可接受水平之下,为顺利完成工程项目工期、质量、安全、成本目标,提供可靠保障。 Based on the analysis of risk characteristics and management status of high-speed railway construction projects in our country, pointing out the main problems in risk management, this paper defines the concept of dynamic risk management and puts forward the dynamic risk management process model. So that risks are always under control in the construction process. The risk level is under an acceptable level, providing a reliable guarantee for the successful completion of the project duration, quality, safety and cost objectives.