基于分布式多传感器融合技术的帷幕体防渗效果评价  

Anti-seepage Evaluation of Dam Foundation Curtain Based on Distributed Multi-sensor Data Fusion Theory

作　　者：彭鹏[1] 宋汉周[1] 郭张军[2] 徐建光[2] 

机构地区：[1]河海大学地球科学与工程系,南京市210098 [2]陕西电力科学研究院水电技术研究所,西安市710054

出　　处：《勘察科学技术》2009年第6期18-21,共4页Site Investigation Science and Technology

摘　　要：大坝基础的工作性态,很大程度上受控于帷幕体的完好程度和止水效果。帷幕体的防渗性能及其时效,可由传感器采集到的地下水宏观动态反映出来,然而在多个传感器采集的数据中,常常出现各传感器反馈的信息不一致的现象。为消除这种现象,采用分布式多传感器融合方法,并根据有无反馈信息结构,分别进行融合,并将其应用于评价某坝13坝段帷幕体防渗效果,融合后的结果较符合规律。经分析知：2003~2008年间,帷幕体防渗效果呈现了阶段性衰减;其中,2005年和2008年为该坝段帷幕体防渗性能的相对明显衰减时期。建议加强监测,为必要时采取工程措施提供依据。The working state of dam foundation is largely controlled by the perfection degree and waterproof effect of curtain body.The macroscopic regimes of groundwater under dam foundation,which were monitored by sensor could reflect its anti-seepage effect and time-variance,but in the procedure of multi-sensor data fusion,some evaluation indexes were inconsistent.In order to eliminate this phenomenon,distributed multi-sensor data fusion theory was utilized.Two different kinds of methods were used based on feedback and non-feedback structure,the data fusion of multi-sensor was obtained.Analysis of groundwater macroscopic regime under a dam section was carried out by using a decision-making fusion method.As a result,the macroscopic regimes under dam section 13 had the tendency of attenuation with time between 2003 and 2008;the antiseepage performance of the dam foundation curtain was to be weakened locally in 2005 and 2008.It is suggested that the monitoring should be strengthened to provide the basis for adopting engineering measures if necessary.

关 键 词：分布式多传感器数据融合 卡尔曼 坝基地下水宏观动态 防渗耐久性 

分 类 号：TV543[水利工程—水利水电工程]