Anti-seepage evaluation of dam foundation curtain based on Bayes data fusion theory

The macroscopic regimes under dam, which collected by sensor could reflect anti-seepage effect and its time-variance of dam foundation curtain, but in the procedure of multi-sensor data fusion, some evaluation indices were inconsistent. In order to eliminate this phenomenon, Bayes data fusion theory was utilized; the reliability of each sensor must be calculated before establishing the correct relation matrix. The fuzzy reliability of sensor was given by the statistical method. Based on the fuzzy index, 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 increasing with time between 2003 and 2008. The anti-seepage performance of the dam foundation curtain was to be weakened locally.