Research On Local Weather Classification During The Flood Discharge In Dam Area

The flood discharge atomization is not only affected by hydraulic condition and operation mode,but also closely related to local weather conditions in dam area.I have done a lot of work on the local weather during the flood discharge period of dam area.It is summarized as the following three parts.The first part,I studied on the numerical simulation of the rain and fog process,and on mechanism of development of the fog and rain process.The numerical simulation of the area around Lishui river Wucha bridge reach used WRF numerical weather prediction model.Combining simulation results with meteorological observation data,I preliminary analyzed the formation,maintenance and dissipation mechanism of rain and fog process.In the second part,I established the numerical calculation model of local meteorological field in dam area.The numerical simulation of the local meteorological field during the discharge period of the hydropower station used WRF numerical weather prediction model.I obtained the distribution and size of weather elements such as temperature and relative humidity during flood discharge in dam area.In the third part,I established the local weather classification model during the flood discharge of dam area.And determined the parameters of important weather factors affecting the atomization of flood discharge in the local meteorological field.I usd Apriori algorithm to mining the frequent itemsets of association rules,and analysed the correlation of local weather elements,then I established a weather classification model.Based on the examples of Ertan hydropower station and Jinping primary hydropower station,I analysed the local meteorological field's impacts on the discharge atomization in dam area under the conditions of different weather types.