Based on four years of spatially synchronous topographic data the Oujiang Estuary from 2002 to 2019, variations and physical mechanisms estuarine evolution driven by natural conditions human activities since beginning this century were analyzed. The results show that has changed dramatically in past 20 years. From net sediment erosion estuary was 163.44 million m3, average bed elevation river-d...

This paper analyzes the influence on diversion capacity of Yellow River sluices factors such as water level change in irrigation areas lower River, scouring river channels and siltation channels. It is suggested that main reason for decrease different inflow levels obvious same discharge due to continuous At end this paper, targeted countermeasures suggestions are put forward solve problem decl...

The bedrock used for underground construction has obvious traces of hydrodynamic scouring damage, and the mechanical properties especially are severely damaged under a groundwater environment. On this basis, considering excavated various saturations, uniaxial compression test diorite is carried out. Meanwhile, scanning electron microscopy (SEM), energy spectroscopy (EDS) X-ray diffraction (XRD)...

Because of the problem local scour caused by change flow structure water-resistance column bridge pier, theoretical analysis, and indoor water tank test were used to study effect installing a new anti-scouring device in front pier on reduction effect; influence main design parameters such as height protective device, angle distance from was selected, optimal parameter combination selected. The ...