Application of IVDF model in the forecast of earth-rock dam's monitoring data
Peng Qin · Yangtze River · 2010
Forecast of earth-rock Dam's monitoring data is very important in revealing the deformation law of dam as well as in the protection of its structural safety.Based on fractal theory,this paper take Tongshanyuan earth-rock dam as example and attempts to apply the Improved Variable Dimension Fractal Model(IVDF model) in the deformation forecast of earth-rock dam by small amount of monitoring data.The monitored strain data of concrete cut-off wall of Tongshanyuan earth-rock dam is selected as research object to forecast the wall strain the forecast result are compared with the results of gray model GM(1,1) and BP neural network.The results show that,as IVDF Model makes good use of the self-similarity of fractal theory,thus it has advantages of high forecast precision and noise immunity,suit for the forecast with small amount of monitored data and has a promising application prospect.