基于多监测及预警要素的地铁工程安全风险量化评估方法

通过对地铁基坑隧道工程各监测项目实测数据及其预警指标、预警数量等多项因素进行挖掘和综合分析，研究建立一种基于多因素权重矩阵分析法的工程安全风险状态量化评估方法，克服当前监测预警多、风险评判定性为主的工程安全风险状态局限性，填补工程安全风险动态及定量化评估的空白，提升工程预警及安全风险状态判别的合理性、及时性和智能化。将该方法应用于某工程中，有效并及时地指导地铁基坑隧道工程施工中安全风险评估与控制、预警响应及处置工作，提高地铁工程的安全风险预控效果及管理水平。

A Quantitative Method Based on Multiple Monitoring Items and Early Warning Factors for Evaluation of Metro Engineering Safety Risks

A new quantitative method for evaluating metro engineering safety risks is presented, which is based on multifactor weight matrix analysis by data mining and comprehensive analysis of the measured data of monitoring items, early-warning indices, number of early-warnings, etc., in metro foundation pit and tunnel engineering. The shortcomings of the existing methods such as the multi-factor discrimination, qualitative analysis and the deviation from the real situations of risks in the project are thus overcome both in theory and in application. This method fills in the gaps in quantitative evaluation of engineering safety risks and improves the rationality, timeliness and intelligence of engineering early warning and identification of safety risks. This method is then applied to a project, which shows that this method can enhance the whole performance efficiently in safety risk assessment and control, early warning response and disposal in pre-control and management of safety risks in metro foundation pit and tunnel engineering.