Study on sedimentation characteristics in labyrinth emitter

Study on the controlled water levels of Three Gorges Reservoir in September with considering the impact of sediment deposition;

Impact on sediment deposition and shoals change in Chongqing Reach of the impounding water ahead of the schedule of the Three Gorges Reservoir;

Numerical model for effects of outlet shapes of approach channels on sediment deposition;

Analysis on influence of flow velocity-flow regime and sedimentation on operation of underground hydropower station of Three Gorges Project;

Study on water-sediment optimum allocation in upstream basin and comprehensive measures of sediment control in Guanting reservoirⅠ:Reservoir sedimentation and general plan of water and sediment control;

Research on sedimentation analysis based on GIS technique;

Study on sediment siltation for extension project of Weifang harbor;

By using wind,wave,tidal current,sediment numerical models based on the up-todata hydrology,sediment data of field observation and remote sensing data,sediment siltation in the deep channel is computed.

Based on a large quantity of meassured data,the pattern of sediment siltation is studied and the feasibility of building offshore deep water terminals in Tianjin Harbor is discussed as well.

One dimensional flow and sediment mathematics model of river unsteady flow is used to study the change rule of the sediment depth at the gate of the water diversion canal of the Yangtze River to Han River water transfer project in different water sediment conditions;the influences of different roughness coefficients on the sediment accumulation depth are also analyzed.

According to the design requirements of water diversion for sediment control of the Yangtze River to Han River Water Transfer Project, the sediment accumulation conditions in the water diversion canal with or without sedimentation basin are researched on the basis of basic hydrology sediment and engineering data by one-dimensional constant flow heterogeneous sand mathematical model.

Combining experimental data with site investigation results, this paper expounds the influence of layout of harbor basin′s axis on deposition thickness and total sediment accumulation in backflow area, analyzes the reasons of the influences, and puts forward suggestions on determination of reasonable axis of inland excavated-in basin.

Based on the results of sectional hydrologic survey and measurements,the properties of the sediment load,sediment concentration in the seawater and the flow rate of seawater in the sea area are analyzed and ascertained and the causes of siltation in the downstream port area from the ship lock are analyzed in greater depth.

With intensive development of its surrounding areas, water quality has been critically affected by siltation and bottom mud.

A one-dimensional unsteady numerical model is developed to simulate the movement of flow and sediment in a regular approach channel and to analyze the influence of some factors on siltation.