Model Test of the Riverbed Deformation for the Flood Control Project of Chengde Reaches of Luanhe River

Abstract

The flow field variation and the riverbed deformation of Chengde reaches of Luanhe river before and after the construction of the embankment and dam engineering were studied by the river model test. The results showed that the dike layout was reasonable, the designed erosion control measures can resist the local scour, and the dam reduced the scouring. So the maximum erosion depth near the left and right dike was decreased by 3.0m and the average depth reduction was 0.9m. Under the dam project conditions, the deep scour pit at the dike toe with the maximum scouring depth of 4.0 - 5.0m was shaped. Such erosion control measures as the fuseplugspillway form is suggested to reduce the erosion significantly.