Study on Formulation Method of Double Control Index of Concrete Dam Deformation Considering Flood Control Risk
In view of empirical for the failure probability value of the dam monitoring index based on the typical small probability method and the problem that the current deformation monitoring index does not consider the deformation change rate,the dam deformation failure risk is combined with the dam flood control risk(upstream inflow and flood dis-charge capacity),and the failure probability is taken as the design flood control risk.The typical small probability meth-od is used to formulate the deformation monitoring index of the key measuring points.Based on the water level of the de-sign flood routing reservoir and its corresponding deformation component change rate,the diformation rate monitoring in-dex is determined.A method for formulating the dual monitoring index of deformation and deformation rate of concrete dam is proposed considering flood control risk.Taking a high arch dam in service as an example,the double monitoring indexes of measured deformation and deformation rate of typical measuring points are proposed.The measured deforma-tion data and its rate of change are less than the proposed deformation monitoring index and deformation rate monitoring index,showing that the current deformation state of the dam is safe and controllable.
concrete damdeformationdouble control indexflood regulation calculationsmall probability method
万方数据
维普
