Excess Storage-Excess Infiltration Model In The Ancient Country In The Small Watershed Flood Forecasting Research And Analysis

Short of flood disasters in general,the rain intensity is bigger,it not only restricts the economy development,also threatening human life and property safety at any time,often in a short time bring great loss to the property of the people,so the study of flood forecasting of human life and development is very important.Belongs to ShanQiu District ancient county in Shanxi Province,the flood disasters,so the study of the basin flood forecasting plays an important role in the region of the flood control and disaster mitigation.Distributed hydrological model is an important means of flood forecast,is also the focus and direction of the current hydrological subject in the research,in this paper,by constructing suitable for ancient county small watershed flood storage full-super runoff yield model,the model is based on full-super seepage flow produce storage mode,the unit line and root calculation method based on the theory of mas Beijing to build the model of small watershed as the carrier of the ancient county flood events in simulation,through the simulation validation of simulation results and the experience model of comparing the simulation results can be found that xu full-super precision is higher than the experience model of seepage flow model to simulate the production of simulation precision,xu full-super infiltration runoff model can undertake flood forecasting in the basin,and provide guidance to the basin of the flood control and disaster mitigation.The main results of this study are as follows:(1)based on the comprehensive collection at home and abroad about the history of literature system and in-depth comparison and analysis,the method of flood forecast at home and abroad,and often use optimization evaluation method,collecting the ancient county hydrological geological data in the selected storage full-super seepage flow model as the research main production methods.(2)this paper collected the "seven basic hydrological station upstream rainfall and evaporation data of precipitation station,as well as the" station in the historical events and processing of these materials,all the rainfall and evaporation data interpolation into time data for 1 hour.In this article by geographic information system data,and with the help of ARCGIS software to sort out the ancient county small watershed land use and soil data,DEM data through the collected data.(3)using the above data model input,select 10 sessions of flood parameters of rate and analysis of seven games as the flood rate regularly,3 times floods as JianYanQi,through the model can be found that the result of the simulation precision is high,the 10 flood has eight games to serie b above flood level,so the built model can be in the area of flood forecast,and later to the region to play an important role in guiding the flood control and disaster mitigation.