Analysis Of Flood Accommodate Capacity And Flood-proof Countermeasure Study Of The Dawenhe Main Watercourse

The flood problem is a significant a complex phenomenon in nature. And the watercourse discharge flood ability is directly related to safety an economy of a project as well as benefit of people's lives and property. Dawenhe is the biggest tributary of Yellow River downstream; it is one of the main Flood control and waterlogged elimination river channel along the river area. In recent years,as human activity intensifies and rapid development of economy. The flood disaster is more and more frequent and the harm is increasing. So the paper research has the significant social and economic significance.Based on the investigation of the geographical and historical data such as the hydrology and flood disaster of dawenhe area.This paper figured the flood disaster situation, and mastered some other analysis informations. On this basis, it determined the hydrological tool- xin'anjiang model with three runoff components,and combined with the actual situation of dawenhe area, it improved the model from the runoff mechaniam to make it more suitable for the area. Then used the improvement model, it calculated the maximum peak flow from linwen station to daicunba station, the maximum peak flow stood in 1/20, 1/50 and 1/100. Compared the peak flow between designed flood channel, it got that the river section from linwen station to zhuanshe dam meeted the flood discharged ability, and the section from zhuanshe dam to daicunba station did not.This paper also analyzes the influence factors based on the analysis of the current situation and existing problems of the area, and put forward the corresponding flood control measures. It offered a proposal for future research according to the difficulties and the deficiencies in the process of research .