基于FMCEA的六都寨水库建筑物风险程度分析

Risk analysis of Liuduzhai Reservoir based on FMCEA

采用风险分析技术评价大坝安全风险,是保证水库安全运行和除险加固治理的重要依据。利用FMECA风险分析法并参照加拿大BC水电公司大坝风险分析标准,对湖南省六都寨水库的大坝、溢洪道及引水隧洞加固前后的风险程度进行了分析和探讨。分析认为加固前六都寨水库主要建筑物存在较为严重的风险,指出了建筑物加固的优先排序;通过采取工程加固措施及加强安全监测,可降低建筑物失效发生概率。分析成果对今后水库大坝安全评价及除险加固设计具有一定的借鉴作用。

Risk analysis has been widely applied in hydropower field in developed countries since it can provide basis for fund allocating and decision making of managers.Using FMECA risk analysis and referring the risk analysis standard of Canadian BC Hydropower Corporation,we conducted discussion and risk degree analysis on the dam,spillway and diversion tunnel of Liuduzhai Reservoir in Hunan Province before and after the project reinforcement.The analysis showed the severe risk existed in the main structure of Liuduzhai Reservoir.We pointed out the priority order of the reinforcement work.By taking engineering measures and strengthening safety monitoring,the failure probability of the structures can be effectively reduced.The analysis results provide valuable references for safety evaluation,risk removal and reinforcement design of reservoir projects.