基于模糊层次分析法的电力基坑气体环境安全风险评估

Safety Risk Assessment of Gas Environment in Power Foundation Pits Based on Fuzzy Analytic Hierarchy Process

基于模糊层次分析法创建电力基坑施工作业前、作业中的风险评估模型,作业后进行风险评估反馈,结合某工程实例进行工程项目作业风险评估,实施结果表明,基坑内的危险气体体积分数是作业风险的主要影响因素,控制基坑内的危险气体体积分数是保障电力基坑内部作业安全的一项关键措施。

Based on the fuzzy analytic hierarchy process(FAHP),a whole-process risk assessment model is created for the activities before and during the construction of power foundation pits,followed by feedbacks of the risk assessment after construction.Operation risk assessment is conducted combined with a project example,with the implementation results show that the volume fraction of dangerous gas in a foundation pit is the predominant influencing factor of operation risks,and controlling the volume fraction of dangerous gas in such a foundation pit is a key measure to ensure the operation safety of power foundation pits.