Analysis On Scour And Silting Evolution And Its Influencing Factors In The Inner Mongolia Reach Of The Yellow River

In recent years, the Yellow River Inner Mongolia paragraph flow violent wandering riverbed, migration swing, heavy siltation atrophy. Therefore, to study the relationship between the river bed scouring and silting evolution and its influencing factors becomes more urgent. In this paper, based on the riverbed evolution and river dynamics, by statistical analysis, the software processing, correlation analysis as the basic method, Analysis of the Yellow River Inner Mongolia section of4hydrological stations discharge water level, river section and a great amount of data, Study on variation rules of the Yellow River Inner Mongolia section of transverse and longitudinal channel morphology changes, the same flow characteristics of different flow and riverbed evolution of water level and relevant factors, the main knowledge as follows:1. The results section method showed:45years in Shizuishan section on the whole in balance, only a tiny erosion. Continuous migration to the right swing, obviously deposition on the left bank; Bayangaole section showed a slight accumulation. The river bed aggradation and erosion occur alternately, cross the river and had no obvious change, but the local dramatic erosion; Sanhuhekou section to the narrow deep direction development. The river bed variation, continuous migration to the left swing, showing curved river, lateral accretion of convex concave bank erosion; The last section is at Toudaoguai river erosion state, swing transfer obvious:continuous to both sides of the migration, or switch back and forth, river in dynamic sedimentation equilibrium.2. The inner Mongolia section of the Yellow River flood affected erosion from upstream flooding, flood water level fluctuations rather than up and down, the whole state was slightly silt. Water flow nicely with the law reveals the Inner Mongolia section of the Yellow River has a "flood, erosion, siltation small water" features.3. The Yellow River Inner Mongolia River main channel area and average width generally decreases. Once a large area of relatively stable River Delta has evolved into a small bar, reduce the number of River Delta, generally aggradation and channel shrinking trend.4. The Yellow River in Inner Mongolia over the water area of the main channel A, with the previous year over the water area of the main channel A1-1, flow Q1, there is a strong correlation between the other time factort in the establishment of linear regression model is used to simulate and predict changes in the study area, the main channel of water area, thus revealing riverbed sedimentation characteristics.